id	sid	tid	token	lemma	pos
19395	1	1	Illustration	illustration	NN
19395	1	2	:	:	:
19395	1	3	Fig	Fig	NNP
19395	1	4	.	.	.
19395	2	1	1	1	LS
19395	2	2	.	.	.
19395	3	1	The	the	DT
19395	3	2	Constellation	Constellation	NNP
19395	3	3	of	of	IN
19395	3	4	Orion	Orion	NNP
19395	3	5	(	(	-LRB-
19395	3	6	Hubble	Hubble	NNP
19395	3	7	)	)	-RRB-
19395	3	8	.	.	.
19395	4	1	Photographed	photograph	VBN
19395	4	2	with	with	IN
19395	4	3	a	a	DT
19395	4	4	small	small	JJ
19395	4	5	camera	camera	NN
19395	4	6	lens	lens	NN
19395	4	7	of	of	IN
19395	4	8	1	1	CD
19395	4	9	inch	inch	NN
19395	4	10	aperture	aperture	JJ
19395	4	11	and	and	CC
19395	4	12	5	5	CD
19395	4	13	inches	inch	NNS
19395	4	14	focal	focal	JJ
19395	4	15	length	length	NN
19395	4	16	.	.	.
19395	5	1	The	the	DT
19395	5	2	three	three	CD
19395	5	3	bright	bright	JJ
19395	5	4	stars	star	NNS
19395	5	5	in	in	IN
19395	5	6	the	the	DT
19395	5	7	centre	centre	NN
19395	5	8	of	of	IN
19395	5	9	the	the	DT
19395	5	10	picture	picture	NN
19395	5	11	form	form	VBP
19395	5	12	the	the	DT
19395	5	13	belt	belt	NN
19395	5	14	of	of	IN
19395	5	15	Orion	Orion	NNP
19395	5	16	.	.	.
19395	6	1	Just	just	RB
19395	6	2	below	below	RB
19395	6	3	,	,	,
19395	6	4	in	in	IN
19395	6	5	the	the	DT
19395	6	6	sword	sword	NN
19395	6	7	handle	handle	NN
19395	6	8	,	,	,
19395	6	9	is	be	VBZ
19395	6	10	an	an	DT
19395	6	11	irregular	irregular	JJ
19395	6	12	white	white	JJ
19395	6	13	patch	patch	NN
19395	6	14	about	about	RB
19395	6	15	one	one	CD
19395	6	16	-	-	HYPH
19395	6	17	eighth	eighth	JJ
19395	6	18	of	of	IN
19395	6	19	an	an	DT
19395	6	20	inch	inch	NN
19395	6	21	in	in	IN
19395	6	22	diameter	diameter	NN
19395	6	23	.	.	.
19395	7	1	This	this	DT
19395	7	2	is	be	VBZ
19395	7	3	a	a	DT
19395	7	4	small	small	JJ
19395	7	5	-	-	HYPH
19395	7	6	scale	scale	NN
19395	7	7	image	image	NN
19395	7	8	of	of	IN
19395	7	9	the	the	DT
19395	7	10	great	great	JJ
19395	7	11	nebula	nebula	NN
19395	7	12	in	in	IN
19395	7	13	Orion	Orion	NNP
19395	7	14	,	,	,
19395	7	15	shown	show	VBN
19395	7	16	on	on	IN
19395	7	17	a	a	DT
19395	7	18	larger	large	JJR
19395	7	19	scale	scale	NN
19395	7	20	in	in	IN
19395	7	21	Fig	Fig	NNP
19395	7	22	.	.	.
19395	8	1	2	2	LS
19395	8	2	.	.	.
19395	8	3	]	]	-RRB-
19395	9	1	THE	the	DT
19395	9	2	NEW	new	JJ
19395	9	3	HEAVENS	heaven	NNS
19395	9	4	BY	by	IN
19395	9	5	GEORGE	GEORGE	NNP
19395	9	6	ELLERY	ELLERY	NNP
19395	9	7	HALE	HALE	NNP
19395	9	8	DIRECTOR	DIRECTOR	NNP
19395	9	9	OF	of	IN
19395	9	10	THE	the	DT
19395	9	11	MOUNT	MOUNT	NNP
19395	9	12	WILSON	WILSON	NNP
19395	9	13	OBSERVATORY	OBSERVATORY	NNP
19395	9	14	OF	of	IN
19395	9	15	THE	the	DT
19395	9	16	CARNEGIE	CARNEGIE	NNP
19395	9	17	INSTITUTION	institution	NN
19395	9	18	OF	of	IN
19395	9	19	WASHINGTON	WASHINGTON	NNP
19395	9	20	WITH	with	IN
19395	9	21	NUMEROUS	NUMEROUS	NNP
19395	9	22	ILLUSTRATIONS	illustrations	JJ
19395	9	23	NEW	NEW	NNP
19395	9	24	YORK	YORK	NNP
19395	9	25	CHARLES	CHARLES	NNP
19395	9	26	SCRIBNER	SCRIBNER	NNP
19395	9	27	'S	's	POS
19395	9	28	SONS	son	NNS
19395	9	29	1922	1922	CD
19395	9	30	TO	to	IN
19395	9	31	MY	MY	NNP
19395	9	32	WIFE	wife	NN
19395	9	33	PREFACE	preface	VB
19395	9	34	Fourteen	fourteen	CD
19395	9	35	years	year	NNS
19395	9	36	ago	ago	RB
19395	9	37	,	,	,
19395	9	38	in	in	IN
19395	9	39	a	a	DT
19395	9	40	book	book	NN
19395	9	41	entitled	entitle	VBN
19395	9	42	"	"	``
19395	9	43	The	the	DT
19395	9	44	Study	Study	NNP
19395	9	45	of	of	IN
19395	9	46	Stellar	Stellar	NNP
19395	9	47	Evolution	Evolution	NNP
19395	9	48	"	"	''
19395	9	49	(	(	-LRB-
19395	9	50	University	University	NNP
19395	9	51	of	of	IN
19395	9	52	Chicago	Chicago	NNP
19395	9	53	Press	Press	NNP
19395	9	54	,	,	,
19395	9	55	1908	1908	CD
19395	9	56	)	)	-RRB-
19395	9	57	,	,	,
19395	9	58	I	-PRON-	PRP
19395	9	59	attempted	attempt	VBD
19395	9	60	to	to	TO
19395	9	61	give	give	VB
19395	9	62	in	in	IN
19395	9	63	untechnical	untechnical	JJ
19395	9	64	language	language	NN
19395	9	65	an	an	DT
19395	9	66	account	account	NN
19395	9	67	of	of	IN
19395	9	68	some	some	DT
19395	9	69	modern	modern	JJ
19395	9	70	methods	method	NNS
19395	9	71	of	of	IN
19395	9	72	astrophysical	astrophysical	JJ
19395	9	73	research	research	NN
19395	9	74	.	.	.
19395	10	1	This	this	DT
19395	10	2	book	book	NN
19395	10	3	is	be	VBZ
19395	10	4	now	now	RB
19395	10	5	out	out	IN
19395	10	6	of	of	IN
19395	10	7	print	print	NN
19395	10	8	,	,	,
19395	10	9	and	and	CC
19395	10	10	the	the	DT
19395	10	11	rapid	rapid	JJ
19395	10	12	progress	progress	NN
19395	10	13	of	of	IN
19395	10	14	science	science	NN
19395	10	15	has	have	VBZ
19395	10	16	left	leave	VBN
19395	10	17	it	-PRON-	PRP
19395	10	18	completely	completely	RB
19395	10	19	out	out	IN
19395	10	20	of	of	IN
19395	10	21	date	date	NN
19395	10	22	.	.	.
19395	11	1	As	as	IN
19395	11	2	I	-PRON-	PRP
19395	11	3	have	have	VBP
19395	11	4	found	find	VBN
19395	11	5	no	no	DT
19395	11	6	opportunity	opportunity	NN
19395	11	7	to	to	TO
19395	11	8	prepare	prepare	VB
19395	11	9	a	a	DT
19395	11	10	new	new	JJ
19395	11	11	edition	edition	NN
19395	11	12	,	,	,
19395	11	13	or	or	CC
19395	11	14	to	to	TO
19395	11	15	write	write	VB
19395	11	16	another	another	DT
19395	11	17	book	book	NN
19395	11	18	of	of	IN
19395	11	19	similar	similar	JJ
19395	11	20	purpose	purpose	NN
19395	11	21	,	,	,
19395	11	22	I	-PRON-	PRP
19395	11	23	have	have	VBP
19395	11	24	adopted	adopt	VBN
19395	11	25	the	the	DT
19395	11	26	simpler	simple	JJR
19395	11	27	expedient	expedient	NN
19395	11	28	of	of	IN
19395	11	29	contributing	contribute	VBG
19395	11	30	occasional	occasional	JJ
19395	11	31	articles	article	NNS
19395	11	32	on	on	IN
19395	11	33	recent	recent	JJ
19395	11	34	developments	development	NNS
19395	11	35	to	to	IN
19395	11	36	_	_	NNP
19395	11	37	Scribner	Scribner	NNP
19395	11	38	's	's	POS
19395	11	39	Magazine	Magazine	NNP
19395	11	40	_	_	NNP
19395	11	41	,	,	,
19395	11	42	three	three	CD
19395	11	43	of	of	IN
19395	11	44	which	which	WDT
19395	11	45	are	be	VBP
19395	11	46	included	include	VBN
19395	11	47	in	in	IN
19395	11	48	the	the	DT
19395	11	49	present	present	JJ
19395	11	50	volume	volume	NN
19395	11	51	.	.	.
19395	12	1	I	-PRON-	PRP
19395	12	2	am	be	VBP
19395	12	3	chiefly	chiefly	RB
19395	12	4	indebted	indebted	JJ
19395	12	5	,	,	,
19395	12	6	for	for	IN
19395	12	7	the	the	DT
19395	12	8	illustrations	illustration	NNS
19395	12	9	,	,	,
19395	12	10	to	to	IN
19395	12	11	the	the	DT
19395	12	12	Mount	Mount	NNP
19395	12	13	Wilson	Wilson	NNP
19395	12	14	Observatory	Observatory	NNP
19395	12	15	and	and	CC
19395	12	16	the	the	DT
19395	12	17	present	present	JJ
19395	12	18	and	and	CC
19395	12	19	former	former	JJ
19395	12	20	members	member	NNS
19395	12	21	of	of	IN
19395	12	22	its	-PRON-	PRP$
19395	12	23	staff	staff	NN
19395	12	24	whose	whose	WP$
19395	12	25	names	name	NNS
19395	12	26	appear	appear	VBP
19395	12	27	in	in	IN
19395	12	28	the	the	DT
19395	12	29	captions	caption	NNS
19395	12	30	.	.	.
19395	13	1	Special	special	JJ
19395	13	2	thanks	thank	NNS
19395	13	3	are	be	VBP
19395	13	4	due	due	JJ
19395	13	5	to	to	IN
19395	13	6	Mr.	Mr.	NNP
19395	13	7	Ferdinand	Ferdinand	NNP
19395	13	8	Ellerman	Ellerman	NNP
19395	13	9	,	,	,
19395	13	10	who	who	WP
19395	13	11	made	make	VBD
19395	13	12	all	all	DT
19395	13	13	of	of	IN
19395	13	14	the	the	DT
19395	13	15	photographs	photograph	NNS
19395	13	16	of	of	IN
19395	13	17	the	the	DT
19395	13	18	observatory	observatory	JJ
19395	13	19	buildings	building	NNS
19395	13	20	and	and	CC
19395	13	21	instruments	instrument	NNS
19395	13	22	,	,	,
19395	13	23	and	and	CC
19395	13	24	prepared	prepare	VBD
19395	13	25	all	all	DT
19395	13	26	material	material	NN
19395	13	27	for	for	IN
19395	13	28	reproduction	reproduction	NN
19395	13	29	.	.	.
19395	14	1	The	the	DT
19395	14	2	cut	cut	NN
19395	14	3	of	of	IN
19395	14	4	the	the	DT
19395	14	5	original	original	JJ
19395	14	6	Cavendish	cavendish	JJ
19395	14	7	apparatus	apparatus	NN
19395	14	8	is	be	VBZ
19395	14	9	copied	copy	VBN
19395	14	10	from	from	IN
19395	14	11	the	the	DT
19395	14	12	_	_	NNP
19395	14	13	Philosophical	Philosophical	NNP
19395	14	14	Transactions	Transactions	NNPS
19395	14	15	for	for	IN
19395	14	16	1798	1798	CD
19395	14	17	_	_	NNP
19395	14	18	with	with	IN
19395	14	19	the	the	DT
19395	14	20	kind	kind	JJ
19395	14	21	permission	permission	NN
19395	14	22	of	of	IN
19395	14	23	the	the	DT
19395	14	24	Royal	Royal	NNP
19395	14	25	Society	Society	NNP
19395	14	26	,	,	,
19395	14	27	and	and	CC
19395	14	28	I	-PRON-	PRP
19395	14	29	am	be	VBP
19395	14	30	also	also	RB
19395	14	31	indebted	indebted	JJ
19395	14	32	to	to	IN
19395	14	33	the	the	DT
19395	14	34	Royal	Royal	NNP
19395	14	35	Society	Society	NNP
19395	14	36	and	and	CC
19395	14	37	to	to	IN
19395	14	38	Professor	Professor	NNP
19395	14	39	Fowler	Fowler	NNP
19395	14	40	and	and	CC
19395	14	41	Father	Father	NNP
19395	14	42	Cortie	Cortie	NNP
19395	14	43	for	for	IN
19395	14	44	the	the	DT
19395	14	45	privilege	privilege	NN
19395	14	46	of	of	IN
19395	14	47	reproducing	reproduce	VBG
19395	14	48	from	from	IN
19395	14	49	the	the	DT
19395	14	50	_	_	NNP
19395	14	51	Proceedings	Proceedings	NNPS
19395	14	52	_	_	NNP
19395	14	53	two	two	CD
19395	14	54	illustrations	illustration	NNS
19395	14	55	of	of	IN
19395	14	56	their	-PRON-	PRP$
19395	14	57	spectroscopic	spectroscopic	JJ
19395	14	58	results	result	NNS
19395	14	59	.	.	.
19395	15	1	G.	G.	NNP
19395	15	2	E.	E.	NNP
19395	15	3	H.	H.	NNP
19395	15	4	January	January	NNP
19395	15	5	,	,	,
19395	15	6	1922	1922	CD
19395	15	7	.	.	.
19395	16	1	CONTENTS	content	NNS
19395	16	2	CHAPTER	CHAPTER	NNP
19395	16	3	I.	i.	NN
19395	17	1	THE	the	DT
19395	17	2	NEW	NEW	NNP
19395	17	3	HEAVENS	HEAVENS	NNP
19395	17	4	II	II	NNP
19395	17	5	.	.	.
19395	18	1	GIANT	GIANT	NNP
19395	18	2	STARS	STARS	NNP
19395	18	3	III	III	NNP
19395	18	4	.	.	.
19395	19	1	COSMIC	cosmic	VB
19395	19	2	CRUCIBLES	crucible	NNS
19395	19	3	ILLUSTRATIONS	illustration	NNS
19395	19	4	FIG	fig	NN
19395	19	5	.	.	.
19395	20	1	1	1	LS
19395	20	2	.	.	.
19395	21	1	The	the	DT
19395	21	2	Constellation	Constellation	NNP
19395	21	3	of	of	IN
19395	21	4	Orion	Orion	NNP
19395	21	5	(	(	-LRB-
19395	21	6	Hubble	Hubble	NNP
19395	21	7	)	)	-RRB-
19395	21	8	2	2	CD
19395	21	9	.	.	.
19395	22	1	The	the	DT
19395	22	2	Great	Great	NNP
19395	22	3	Nebula	Nebula	NNP
19395	22	4	in	in	IN
19395	22	5	Orion	Orion	NNP
19395	22	6	(	(	-LRB-
19395	22	7	Pease	Pease	NNP
19395	22	8	)	)	-RRB-
19395	22	9	3	3	CD
19395	22	10	.	.	.
19395	23	1	Model	model	NN
19395	23	2	by	by	IN
19395	23	3	Ellerman	Ellerman	NNP
19395	23	4	of	of	IN
19395	23	5	summit	summit	NN
19395	23	6	of	of	IN
19395	23	7	Mount	Mount	NNP
19395	23	8	Wilson	Wilson	NNP
19395	23	9	,	,	,
19395	23	10	showing	show	VBG
19395	23	11	the	the	DT
19395	23	12	observatory	observatory	JJ
19395	23	13	buildings	building	NNS
19395	23	14	among	among	IN
19395	23	15	the	the	DT
19395	23	16	trees	tree	NNS
19395	23	17	and	and	CC
19395	23	18	bushes	bush	NNS
19395	23	19	4	4	CD
19395	23	20	.	.	.
19395	24	1	The	the	DT
19395	24	2	100-inch	100-inch	CD
19395	24	3	Hooker	Hooker	NNP
19395	24	4	telescope	telescope	NN
19395	24	5	5	5	CD
19395	24	6	.	.	.
19395	25	1	Erecting	erect	VBG
19395	25	2	the	the	DT
19395	25	3	polar	polar	JJ
19395	25	4	axis	axis	NN
19395	25	5	of	of	IN
19395	25	6	the	the	DT
19395	25	7	100-inch	100-inch	CD
19395	25	8	telescope	telescope	NN
19395	25	9	6	6	CD
19395	25	10	.	.	.
19395	26	1	Lowest	low	JJS
19395	26	2	section	section	NN
19395	26	3	of	of	IN
19395	26	4	tube	tube	NN
19395	26	5	of	of	IN
19395	26	6	100-inch	100-inch	CD
19395	26	7	telescope	telescope	NN
19395	26	8	,	,	,
19395	26	9	ready	ready	JJ
19395	26	10	to	to	TO
19395	26	11	leave	leave	VB
19395	26	12	Pasadena	Pasadena	NNP
19395	26	13	for	for	IN
19395	26	14	Mount	Mount	NNP
19395	26	15	Wilson	Wilson	NNP
19395	26	16	7	7	CD
19395	26	17	.	.	.
19395	27	1	Section	section	NN
19395	27	2	of	of	IN
19395	27	3	a	a	DT
19395	27	4	steel	steel	NN
19395	27	5	girder	girder	NN
19395	27	6	for	for	IN
19395	27	7	dome	dome	NN
19395	27	8	covering	cover	VBG
19395	27	9	the	the	DT
19395	27	10	100-inch	100-inch	CD
19395	27	11	telescope	telescope	NN
19395	27	12	,	,	,
19395	27	13	on	on	IN
19395	27	14	its	-PRON-	PRP$
19395	27	15	way	way	NN
19395	27	16	up	up	IN
19395	27	17	Mount	Mount	NNP
19395	27	18	Wilson	Wilson	NNP
19395	27	19	8	8	CD
19395	27	20	.	.	.
19395	28	1	Erecting	erect	VBG
19395	28	2	the	the	DT
19395	28	3	steel	steel	NN
19395	28	4	building	building	NN
19395	28	5	and	and	CC
19395	28	6	revolving	revolving	JJ
19395	28	7	dome	dome	NN
19395	28	8	that	that	WDT
19395	28	9	cover	cover	VBP
19395	28	10	the	the	DT
19395	28	11	Hooker	Hooker	NNP
19395	28	12	telescope	telescope	NN
19395	28	13	9	9	CD
19395	28	14	.	.	.
19395	29	1	Building	build	VBG
19395	29	2	and	and	CC
19395	29	3	revolving	revolving	JJ
19395	29	4	dome	dome	NN
19395	29	5	,	,	,
19395	29	6	100	100	CD
19395	29	7	feet	foot	NNS
19395	29	8	in	in	IN
19395	29	9	diameter	diameter	NN
19395	29	10	,	,	,
19395	29	11	covering	cover	VBG
19395	29	12	the	the	DT
19395	29	13	100-inch	100-inch	CD
19395	29	14	Hooker	Hooker	NNP
19395	29	15	telescope	telescope	NN
19395	29	16	10	10	CD
19395	29	17	.	.	.
19395	30	1	One	one	CD
19395	30	2	-	-	HYPH
19395	30	3	hundred	hundred	CD
19395	30	4	-	-	HYPH
19395	30	5	inch	inch	NN
19395	30	6	mirror	mirror	NN
19395	30	7	,	,	,
19395	30	8	just	just	RB
19395	30	9	silvered	silver	VBN
19395	30	10	,	,	,
19395	30	11	rising	rise	VBG
19395	30	12	out	out	IN
19395	30	13	of	of	IN
19395	30	14	the	the	DT
19395	30	15	silvering	silvering	NN
19395	30	16	-	-	HYPH
19395	30	17	room	room	NN
19395	30	18	in	in	IN
19395	30	19	pier	pier	NN
19395	30	20	before	before	IN
19395	30	21	attachment	attachment	NN
19395	30	22	to	to	TO
19395	30	23	lower	low	JJR
19395	30	24	end	end	NN
19395	30	25	of	of	IN
19395	30	26	telescope	telescope	NN
19395	30	27	tube	tube	NN
19395	30	28	.	.	.
19395	31	1	(	(	-LRB-
19395	31	2	Seen	see	VBN
19395	31	3	above	above	RB
19395	31	4	)	)	-RRB-
19395	31	5	11	11	CD
19395	31	6	.	.	.
19395	32	1	The	the	DT
19395	32	2	driving	drive	VBG
19395	32	3	-	-	HYPH
19395	32	4	clock	clock	NN
19395	32	5	and	and	CC
19395	32	6	worm	worm	NN
19395	32	7	-	-	HYPH
19395	32	8	gear	gear	NN
19395	32	9	that	that	WDT
19395	32	10	cause	cause	VBP
19395	32	11	the	the	DT
19395	32	12	100-inch	100-inch	CD
19395	32	13	Hooker	Hooker	NNP
19395	32	14	telescope	telescope	NN
19395	32	15	to	to	TO
19395	32	16	follow	follow	VB
19395	32	17	the	the	DT
19395	32	18	stars	star	NNS
19395	32	19	12	12	CD
19395	32	20	.	.	.
19395	33	1	Large	large	JJ
19395	33	2	irregular	irregular	JJ
19395	33	3	nebula	nebula	NN
19395	33	4	and	and	CC
19395	33	5	star	star	NN
19395	33	6	cluster	cluster	NN
19395	33	7	in	in	IN
19395	33	8	Sagittarius	Sagittarius	NNP
19395	33	9	(	(	-LRB-
19395	33	10	Duncan	Duncan	NNP
19395	33	11	)	)	-RRB-
19395	33	12	13	13	CD
19395	33	13	.	.	.
19395	34	1	Faint	faint	JJ
19395	34	2	spiral	spiral	JJ
19395	34	3	nebula	nebula	NN
19395	34	4	in	in	IN
19395	34	5	the	the	DT
19395	34	6	constellation	constellation	NN
19395	34	7	of	of	IN
19395	34	8	the	the	DT
19395	34	9	Hunting	Hunting	NNP
19395	34	10	Dogs	Dogs	NNP
19395	34	11	(	(	-LRB-
19395	34	12	Pease	pease	NN
19395	34	13	)	)	-RRB-
19395	34	14	14	14	CD
19395	34	15	.	.	.
19395	35	1	Spiral	spiral	JJ
19395	35	2	nebula	nebula	NN
19395	35	3	in	in	IN
19395	35	4	Andromeda	Andromeda	NNP
19395	35	5	,	,	,
19395	35	6	seen	see	VBN
19395	35	7	edge	edge	NN
19395	35	8	on	on	IN
19395	35	9	(	(	-LRB-
19395	35	10	Ritchey	Ritchey	NNP
19395	35	11	)	)	-RRB-
19395	35	12	15	15	CD
19395	35	13	.	.	.
19395	36	1	Photograph	Photograph	NNP
19395	36	2	of	of	IN
19395	36	3	the	the	DT
19395	36	4	moon	moon	NN
19395	36	5	made	make	VBN
19395	36	6	on	on	IN
19395	36	7	September	September	NNP
19395	36	8	15	15	CD
19395	36	9	,	,	,
19395	36	10	1919	1919	CD
19395	36	11	,	,	,
19395	36	12	with	with	IN
19395	36	13	the	the	DT
19395	36	14	100-inch	100-inch	CD
19395	36	15	Hooker	Hooker	NNP
19395	36	16	telescope	telescope	NN
19395	36	17	(	(	-LRB-
19395	36	18	Pease	pease	NN
19395	36	19	)	)	-RRB-
19395	36	20	16	16	CD
19395	36	21	.	.	.
19395	37	1	Photograph	Photograph	NNP
19395	37	2	of	of	IN
19395	37	3	the	the	DT
19395	37	4	moon	moon	NN
19395	37	5	made	make	VBN
19395	37	6	on	on	IN
19395	37	7	September	September	NNP
19395	37	8	15	15	CD
19395	37	9	,	,	,
19395	37	10	1919	1919	CD
19395	37	11	,	,	,
19395	37	12	with	with	IN
19395	37	13	the	the	DT
19395	37	14	100-inch	100-inch	CD
19395	37	15	Hooker	Hooker	NNP
19395	37	16	telescope	telescope	NN
19395	37	17	(	(	-LRB-
19395	37	18	Pease	pease	NN
19395	37	19	)	)	-RRB-
19395	37	20	17	17	CD
19395	37	21	.	.	.
19395	38	1	Hubble	Hubble	NNP
19395	38	2	's	's	POS
19395	38	3	Variable	Variable	NNP
19395	38	4	Nebula	Nebula	NNP
19395	38	5	.	.	.
19395	39	1	One	one	CD
19395	39	2	of	of	IN
19395	39	3	the	the	DT
19395	39	4	few	few	JJ
19395	39	5	nebulæ	nebulæ	NNS
19395	39	6	known	know	VBN
19395	39	7	to	to	TO
19395	39	8	vary	vary	VB
19395	39	9	in	in	IN
19395	39	10	brightness	brightness	NN
19395	39	11	and	and	CC
19395	39	12	form	form	VB
19395	39	13	18	18	CD
19395	39	14	.	.	.
19395	40	1	Ring	re	VBG
19395	40	2	Nebula	Nebula	NNP
19395	40	3	in	in	IN
19395	40	4	Lyra	Lyra	NNP
19395	40	5	,	,	,
19395	40	6	photographed	photograph	VBN
19395	40	7	with	with	IN
19395	40	8	the	the	DT
19395	40	9	60-inch	60-inch	CD
19395	40	10	(	(	-LRB-
19395	40	11	Ritchey	Ritchey	NNP
19395	40	12	)	)	-RRB-
19395	40	13	and	and	CC
19395	40	14	100-inch	100-inch	CD
19395	40	15	(	(	-LRB-
19395	40	16	Duncan	Duncan	NNP
19395	40	17	)	)	-RRB-
19395	40	18	telescopes	telescope	VBZ
19395	40	19	19	19	CD
19395	40	20	.	.	.
19395	41	1	Gaseous	gaseous	JJ
19395	41	2	prominence	prominence	NN
19395	41	3	at	at	IN
19395	41	4	the	the	DT
19395	41	5	sun	sun	NN
19395	41	6	's	's	POS
19395	41	7	limb	limb	NN
19395	41	8	,	,	,
19395	41	9	140,000	140,000	CD
19395	41	10	miles	mile	NNS
19395	41	11	high	high	JJ
19395	41	12	(	(	-LRB-
19395	41	13	Ellerman	Ellerman	NNP
19395	41	14	)	)	-RRB-
19395	41	15	20	20	CD
19395	41	16	.	.	.
19395	42	1	The	the	DT
19395	42	2	sun	sun	NN
19395	42	3	,	,	,
19395	42	4	865,000	865,000	CD
19395	42	5	miles	mile	NNS
19395	42	6	in	in	IN
19395	42	7	diameter	diameter	NN
19395	42	8	,	,	,
19395	42	9	from	from	IN
19395	42	10	a	a	DT
19395	42	11	direct	direct	JJ
19395	42	12	photograph	photograph	NN
19395	42	13	showing	show	VBG
19395	42	14	many	many	JJ
19395	42	15	sun	sun	NN
19395	42	16	-	-	HYPH
19395	42	17	spots	spot	NNS
19395	42	18	(	(	-LRB-
19395	42	19	Whitney	Whitney	NNP
19395	42	20	)	)	-RRB-
19395	42	21	21	21	CD
19395	42	22	.	.	.
19395	43	1	Great	great	JJ
19395	43	2	sun	sun	NN
19395	43	3	-	-	HYPH
19395	43	4	spot	spot	NN
19395	43	5	group	group	NN
19395	43	6	,	,	,
19395	43	7	August	August	NNP
19395	43	8	8	8	CD
19395	43	9	,	,	,
19395	43	10	1917	1917	CD
19395	43	11	(	(	-LRB-
19395	43	12	Whitney	Whitney	NNP
19395	43	13	)	)	-RRB-
19395	43	14	22	22	CD
19395	43	15	.	.	.
19395	44	1	Photograph	Photograph	NNP
19395	44	2	of	of	IN
19395	44	3	the	the	DT
19395	44	4	hydrogen	hydrogen	NN
19395	44	5	atmosphere	atmosphere	NN
19395	44	6	of	of	IN
19395	44	7	the	the	DT
19395	44	8	sun	sun	NN
19395	44	9	(	(	-LRB-
19395	44	10	Ellerman	Ellerman	NNP
19395	44	11	)	)	-RRB-
19395	44	12	23	23	CD
19395	44	13	.	.	.
19395	45	1	Diagram	Diagram	NNP
19395	45	2	showing	show	VBG
19395	45	3	outline	outline	NN
19395	45	4	of	of	IN
19395	45	5	the	the	DT
19395	45	6	100-inch	100-inch	CD
19395	45	7	Hooker	Hooker	NNP
19395	45	8	telescope	telescope	NN
19395	45	9	,	,	,
19395	45	10	and	and	CC
19395	45	11	path	path	NN
19395	45	12	of	of	IN
19395	45	13	the	the	DT
19395	45	14	two	two	CD
19395	45	15	pencils	pencil	NNS
19395	45	16	of	of	IN
19395	45	17	light	light	NN
19395	45	18	from	from	IN
19395	45	19	a	a	DT
19395	45	20	star	star	NN
19395	45	21	when	when	WRB
19395	45	22	under	under	IN
19395	45	23	observation	observation	NN
19395	45	24	with	with	IN
19395	45	25	the	the	DT
19395	45	26	20-foot	20-foot	CD
19395	45	27	Michelson	Michelson	NNP
19395	45	28	interferometer	interferometer	NN
19395	45	29	24	24	CD
19395	45	30	.	.	.
19395	46	1	Twenty	twenty	CD
19395	46	2	-	-	HYPH
19395	46	3	foot	foot	NN
19395	46	4	Michelson	Michelson	NNP
19395	46	5	interferometer	interferometer	NN
19395	46	6	for	for	IN
19395	46	7	measuring	measure	VBG
19395	46	8	star	star	NN
19395	46	9	diameters	diameter	NNS
19395	46	10	,	,	,
19395	46	11	attached	attach	VBN
19395	46	12	to	to	IN
19395	46	13	upper	upper	JJ
19395	46	14	end	end	NN
19395	46	15	of	of	IN
19395	46	16	the	the	DT
19395	46	17	skeleton	skeleton	NN
19395	46	18	tube	tube	NN
19395	46	19	of	of	IN
19395	46	20	the	the	DT
19395	46	21	100-inch	100-inch	CD
19395	46	22	Hooker	Hooker	NNP
19395	46	23	telescope	telescope	NN
19395	46	24	25	25	CD
19395	46	25	.	.	.
19395	47	1	The	the	DT
19395	47	2	giant	giant	NN
19395	47	3	Betelgeuse	Betelgeuse	NNP
19395	47	4	(	(	-LRB-
19395	47	5	within	within	IN
19395	47	6	the	the	DT
19395	47	7	circle	circle	NN
19395	47	8	)	)	-RRB-
19395	47	9	,	,	,
19395	47	10	familiar	familiar	JJ
19395	47	11	as	as	IN
19395	47	12	the	the	DT
19395	47	13	conspicuous	conspicuous	JJ
19395	47	14	red	red	JJ
19395	47	15	star	star	NN
19395	47	16	in	in	IN
19395	47	17	the	the	DT
19395	47	18	right	right	JJ
19395	47	19	shoulder	shoulder	NN
19395	47	20	of	of	IN
19395	47	21	Orion	Orion	NNP
19395	47	22	(	(	-LRB-
19395	47	23	Hubble	Hubble	NNP
19395	47	24	)	)	-RRB-
19395	47	25	26	26	CD
19395	47	26	.	.	.
19395	48	1	Arcturus	Arcturus	NNP
19395	48	2	(	(	-LRB-
19395	48	3	within	within	IN
19395	48	4	the	the	DT
19395	48	5	white	white	NNP
19395	48	6	circle	circle	NNP
19395	48	7	)	)	-RRB-
19395	48	8	,	,	,
19395	48	9	known	know	VBN
19395	48	10	to	to	IN
19395	48	11	the	the	DT
19395	48	12	Arabs	Arabs	NNPS
19395	48	13	as	as	IN
19395	48	14	the	the	DT
19395	48	15	"	"	``
19395	48	16	Lance	Lance	NNP
19395	48	17	Bearer	Bearer	NNP
19395	48	18	,	,	,
19395	48	19	"	"	''
19395	48	20	and	and	CC
19395	48	21	to	to	IN
19395	48	22	the	the	DT
19395	48	23	Chinese	Chinese	NNPS
19395	48	24	as	as	IN
19395	48	25	the	the	DT
19395	48	26	"	"	``
19395	48	27	Great	Great	NNP
19395	48	28	Horn	Horn	NNP
19395	48	29	"	"	''
19395	48	30	or	or	CC
19395	48	31	the	the	DT
19395	48	32	"	"	``
19395	48	33	Palace	Palace	NNP
19395	48	34	of	of	IN
19395	48	35	the	the	DT
19395	48	36	Emperors	Emperors	NNPS
19395	48	37	"	"	''
19395	48	38	(	(	-LRB-
19395	48	39	Hubble	Hubble	NNP
19395	48	40	)	)	-RRB-
19395	48	41	27	27	CD
19395	48	42	.	.	.
19395	49	1	The	the	DT
19395	49	2	giant	giant	JJ
19395	49	3	star	star	NN
19395	49	4	Antares	Antares	NNPS
19395	49	5	(	(	-LRB-
19395	49	6	within	within	IN
19395	49	7	the	the	DT
19395	49	8	white	white	NNP
19395	49	9	circle	circle	NNP
19395	49	10	)	)	-RRB-
19395	49	11	,	,	,
19395	49	12	notable	notable	JJ
19395	49	13	for	for	IN
19395	49	14	its	-PRON-	PRP$
19395	49	15	red	red	JJ
19395	49	16	color	color	NN
19395	49	17	in	in	IN
19395	49	18	the	the	DT
19395	49	19	constellation	constellation	NN
19395	49	20	Scorpio	Scorpio	NNP
19395	49	21	,	,	,
19395	49	22	and	and	CC
19395	49	23	named	name	VBN
19395	49	24	by	by	IN
19395	49	25	the	the	DT
19395	49	26	Greeks	Greeks	NNPS
19395	49	27	"	"	``
19395	49	28	A	A	NNP
19395	49	29	Rival	rival	NN
19395	49	30	of	of	IN
19395	49	31	Mars	Mars	NNP
19395	49	32	"	"	''
19395	49	33	(	(	-LRB-
19395	49	34	Hubble	Hubble	NNP
19395	49	35	)	)	-RRB-
19395	49	36	28	28	CD
19395	49	37	.	.	.
19395	50	1	Diameters	diameter	NNS
19395	50	2	of	of	IN
19395	50	3	the	the	DT
19395	50	4	Sun	Sun	NNP
19395	50	5	,	,	,
19395	50	6	Arcturus	Arcturus	NNP
19395	50	7	,	,	,
19395	50	8	Betelgeuse	Betelgeuse	NNP
19395	50	9	,	,	,
19395	50	10	and	and	CC
19395	50	11	Antares	Antares	NNPS
19395	50	12	compared	compare	VBN
19395	50	13	with	with	IN
19395	50	14	the	the	DT
19395	50	15	orbit	orbit	NN
19395	50	16	of	of	IN
19395	50	17	Mars	Mars	NNP
19395	50	18	29	29	CD
19395	50	19	.	.	.
19395	51	1	Aldebaran	Aldebaran	NNP
19395	51	2	,	,	,
19395	51	3	the	the	DT
19395	51	4	"	"	``
19395	51	5	leader	leader	NN
19395	51	6	"	"	''
19395	51	7	(	(	-LRB-
19395	51	8	of	of	IN
19395	51	9	the	the	DT
19395	51	10	Pleiades	Pleiades	NNP
19395	51	11	)	)	-RRB-
19395	51	12	,	,	,
19395	51	13	was	be	VBD
19395	51	14	also	also	RB
19395	51	15	known	know	VBN
19395	51	16	to	to	IN
19395	51	17	the	the	DT
19395	51	18	Arabs	Arabs	NNPS
19395	51	19	as	as	IN
19395	51	20	"	"	``
19395	51	21	The	the	DT
19395	51	22	Eye	Eye	NNP
19395	51	23	of	of	IN
19395	51	24	the	the	DT
19395	51	25	Bull	Bull	NNP
19395	51	26	,	,	,
19395	51	27	"	"	''
19395	51	28	"	"	``
19395	51	29	The	the	DT
19395	51	30	Heart	heart	NN
19395	51	31	of	of	IN
19395	51	32	the	the	DT
19395	51	33	Bull	Bull	NNP
19395	51	34	,	,	,
19395	51	35	"	"	''
19395	51	36	and	and	CC
19395	51	37	"	"	``
19395	51	38	The	the	DT
19395	51	39	Great	Great	NNP
19395	51	40	Camel	Camel	NNP
19395	51	41	"	"	''
19395	51	42	(	(	-LRB-
19395	51	43	Hubble	Hubble	NNP
19395	51	44	)	)	-RRB-
19395	51	45	30	30	CD
19395	51	46	.	.	.
19395	52	1	Solar	solar	JJ
19395	52	2	prominences	prominence	NNS
19395	52	3	,	,	,
19395	52	4	photographed	photograph	VBN
19395	52	5	with	with	IN
19395	52	6	the	the	DT
19395	52	7	spectroheliograph	spectroheliograph	NN
19395	52	8	without	without	IN
19395	52	9	an	an	DT
19395	52	10	eclipse	eclipse	NN
19395	52	11	(	(	-LRB-
19395	52	12	Ellerman	Ellerman	NNP
19395	52	13	)	)	-RRB-
19395	52	14	31	31	CD
19395	52	15	.	.	.
19395	53	1	The	the	DT
19395	53	2	150-foot	150-foot	CD
19395	53	3	tower	tower	NN
19395	53	4	telescope	telescope	NN
19395	53	5	of	of	IN
19395	53	6	the	the	DT
19395	53	7	Mount	Mount	NNP
19395	53	8	Wilson	Wilson	NNP
19395	53	9	Observatory	Observatory	NNP
19395	53	10	32	32	CD
19395	53	11	.	.	.
19395	54	1	Pasadena	Pasadena	NNP
19395	54	2	Laboratory	Laboratory	NNP
19395	54	3	of	of	IN
19395	54	4	the	the	DT
19395	54	5	Mount	Mount	NNP
19395	54	6	Wilson	Wilson	NNP
19395	54	7	Observatory	Observatory	NNP
19395	54	8	33	33	CD
19395	54	9	.	.	.
19395	55	1	Sun	Sun	NNP
19395	55	2	-	-	HYPH
19395	55	3	spot	spot	NN
19395	55	4	vortex	vortex	NNS
19395	55	5	in	in	IN
19395	55	6	the	the	DT
19395	55	7	upper	upper	JJ
19395	55	8	hydrogen	hydrogen	NN
19395	55	9	atmosphere	atmosphere	NN
19395	55	10	(	(	-LRB-
19395	55	11	Benioff	Benioff	NNP
19395	55	12	)	)	-RRB-
19395	55	13	34	34	CD
19395	55	14	.	.	.
19395	56	1	Splitting	splitting	NN
19395	56	2	of	of	IN
19395	56	3	spectrum	spectrum	NN
19395	56	4	lines	line	NNS
19395	56	5	by	by	IN
19395	56	6	a	a	DT
19395	56	7	magnetic	magnetic	JJ
19395	56	8	field	field	NN
19395	56	9	(	(	-LRB-
19395	56	10	Bacock	bacock	NN
19395	56	11	)	)	-RRB-
19395	56	12	35	35	CD
19395	56	13	.	.	.
19395	57	1	Electric	electric	JJ
19395	57	2	furnace	furnace	NN
19395	57	3	in	in	IN
19395	57	4	the	the	DT
19395	57	5	Pasadena	Pasadena	NNP
19395	57	6	Laboratory	Laboratory	NNP
19395	57	7	of	of	IN
19395	57	8	the	the	DT
19395	57	9	Mount	Mount	NNP
19395	57	10	Wilson	Wilson	NNP
19395	57	11	Observatory	Observatory	NNP
19395	57	12	36	36	CD
19395	57	13	.	.	.
19395	58	1	Titanium	titanium	NN
19395	58	2	oxide	oxide	NN
19395	58	3	in	in	IN
19395	58	4	red	red	JJ
19395	58	5	stars	star	NNS
19395	58	6	37	37	CD
19395	58	7	.	.	.
19395	59	1	Titanium	titanium	NN
19395	59	2	oxide	oxide	NN
19395	59	3	in	in	IN
19395	59	4	sun	sun	NN
19395	59	5	-	-	HYPH
19395	59	6	spots	spot	VBZ
19395	59	7	38	38	CD
19395	59	8	.	.	.
19395	60	1	The	the	DT
19395	60	2	Cavendish	cavendish	JJ
19395	60	3	experiment	experiment	NN
19395	60	4	39	39	CD
19395	60	5	.	.	.
19395	61	1	The	the	DT
19395	61	2	Trifid	Trifid	NNP
19395	61	3	Nebula	Nebula	NNP
19395	61	4	in	in	IN
19395	61	5	Sagittarius	Sagittarius	NNP
19395	61	6	(	(	-LRB-
19395	61	7	Ritchey	Ritchey	NNP
19395	61	8	)	)	-RRB-
19395	61	9	40	40	CD
19395	61	10	.	.	.
19395	62	1	Spiral	spiral	JJ
19395	62	2	nebula	nebula	NN
19395	62	3	in	in	IN
19395	62	4	Ursa	Ursa	NNP
19395	62	5	Major	Major	NNP
19395	62	6	(	(	-LRB-
19395	62	7	Ritchey	Ritchey	NNP
19395	62	8	)	)	-RRB-
19395	62	9	41	41	CD
19395	62	10	.	.	.
19395	63	1	Mount	Mount	NNP
19395	63	2	San	San	NNP
19395	63	3	Antonio	Antonio	NNP
19395	63	4	as	as	IN
19395	63	5	seen	see	VBN
19395	63	6	from	from	IN
19395	63	7	Mount	Mount	NNP
19395	63	8	Wilson	Wilson	NNP
19395	63	9	CHAPTER	CHAPTER	NNP
19395	63	10	I	-PRON-	PRP
19395	63	11	THE	the	DT
19395	63	12	NEW	NEW	NNP
19395	63	13	HEAVENS	heaven	NNS
19395	63	14	Go	go	VBP
19395	63	15	out	out	RP
19395	63	16	under	under	IN
19395	63	17	the	the	DT
19395	63	18	open	open	JJ
19395	63	19	sky	sky	NN
19395	63	20	,	,	,
19395	63	21	on	on	IN
19395	63	22	a	a	DT
19395	63	23	clear	clear	JJ
19395	63	24	and	and	CC
19395	63	25	moon	moon	NN
19395	63	26	-	-	HYPH
19395	63	27	less	less	JJR
19395	63	28	night	night	NN
19395	63	29	,	,	,
19395	63	30	and	and	CC
19395	63	31	try	try	VB
19395	63	32	to	to	TO
19395	63	33	count	count	VB
19395	63	34	the	the	DT
19395	63	35	stars	star	NNS
19395	63	36	.	.	.
19395	64	1	If	if	IN
19395	64	2	your	-PRON-	PRP$
19395	64	3	station	station	NN
19395	64	4	lies	lie	VBZ
19395	64	5	well	well	RB
19395	64	6	beyond	beyond	IN
19395	64	7	the	the	DT
19395	64	8	glare	glare	NN
19395	64	9	of	of	IN
19395	64	10	cities	city	NNS
19395	64	11	,	,	,
19395	64	12	which	which	WDT
19395	64	13	is	be	VBZ
19395	64	14	often	often	RB
19395	64	15	strong	strong	JJ
19395	64	16	enough	enough	RB
19395	64	17	to	to	TO
19395	64	18	conceal	conceal	VB
19395	64	19	all	all	DT
19395	64	20	but	but	IN
19395	64	21	the	the	DT
19395	64	22	brighter	bright	JJR
19395	64	23	objects	object	NNS
19395	64	24	,	,	,
19395	64	25	you	-PRON-	PRP
19395	64	26	will	will	MD
19395	64	27	find	find	VB
19395	64	28	the	the	DT
19395	64	29	task	task	NN
19395	64	30	a	a	DT
19395	64	31	difficult	difficult	JJ
19395	64	32	one	one	NN
19395	64	33	.	.	.
19395	65	1	Ranging	range	VBG
19395	65	2	through	through	IN
19395	65	3	the	the	DT
19395	65	4	six	six	CD
19395	65	5	magnitudes	magnitude	NNS
19395	65	6	of	of	IN
19395	65	7	the	the	DT
19395	65	8	Greek	greek	JJ
19395	65	9	astronomers	astronomer	NNS
19395	65	10	,	,	,
19395	65	11	from	from	IN
19395	65	12	the	the	DT
19395	65	13	brilliant	brilliant	JJ
19395	65	14	Sirius	Sirius	NNP
19395	65	15	to	to	IN
19395	65	16	the	the	DT
19395	65	17	faintest	faint	JJS
19395	65	18	perceptible	perceptible	JJ
19395	65	19	points	point	NNS
19395	65	20	of	of	IN
19395	65	21	light	light	NN
19395	65	22	,	,	,
19395	65	23	the	the	DT
19395	65	24	stars	star	NNS
19395	65	25	are	be	VBP
19395	65	26	scattered	scatter	VBN
19395	65	27	in	in	IN
19395	65	28	great	great	JJ
19395	65	29	profusion	profusion	NN
19395	65	30	over	over	IN
19395	65	31	the	the	DT
19395	65	32	celestial	celestial	JJ
19395	65	33	vault	vault	NN
19395	65	34	.	.	.
19395	66	1	Their	-PRON-	PRP$
19395	66	2	number	number	NN
19395	66	3	seems	seem	VBZ
19395	66	4	limitless	limitless	JJ
19395	66	5	,	,	,
19395	66	6	yet	yet	CC
19395	66	7	actual	actual	JJ
19395	66	8	count	count	NN
19395	66	9	will	will	MD
19395	66	10	show	show	VB
19395	66	11	that	that	IN
19395	66	12	the	the	DT
19395	66	13	eye	eye	NN
19395	66	14	has	have	VBZ
19395	66	15	been	be	VBN
19395	66	16	deceived	deceive	VBN
19395	66	17	.	.	.
19395	67	1	In	in	IN
19395	67	2	a	a	DT
19395	67	3	survey	survey	NN
19395	67	4	of	of	IN
19395	67	5	the	the	DT
19395	67	6	entire	entire	JJ
19395	67	7	heavens	heaven	NNS
19395	67	8	,	,	,
19395	67	9	from	from	IN
19395	67	10	pole	pole	NN
19395	67	11	to	to	IN
19395	67	12	pole	pole	NN
19395	67	13	,	,	,
19395	67	14	it	-PRON-	PRP
19395	67	15	would	would	MD
19395	67	16	not	not	RB
19395	67	17	be	be	VB
19395	67	18	possible	possible	JJ
19395	67	19	to	to	TO
19395	67	20	detect	detect	VB
19395	67	21	more	more	JJR
19395	67	22	than	than	IN
19395	67	23	from	from	IN
19395	67	24	six	six	CD
19395	67	25	to	to	TO
19395	67	26	seven	seven	CD
19395	67	27	thousand	thousand	CD
19395	67	28	stars	star	NNS
19395	67	29	with	with	IN
19395	67	30	the	the	DT
19395	67	31	naked	naked	JJ
19395	67	32	eye	eye	NN
19395	67	33	.	.	.
19395	68	1	From	from	IN
19395	68	2	a	a	DT
19395	68	3	single	single	JJ
19395	68	4	viewpoint	viewpoint	NN
19395	68	5	,	,	,
19395	68	6	even	even	RB
19395	68	7	with	with	IN
19395	68	8	the	the	DT
19395	68	9	keenest	keen	JJS
19395	68	10	vision	vision	NN
19395	68	11	,	,	,
19395	68	12	only	only	RB
19395	68	13	two	two	CD
19395	68	14	or	or	CC
19395	68	15	three	three	CD
19395	68	16	thousand	thousand	CD
19395	68	17	can	can	MD
19395	68	18	be	be	VB
19395	68	19	seen	see	VBN
19395	68	20	.	.	.
19395	69	1	So	so	RB
19395	69	2	many	many	JJ
19395	69	3	of	of	IN
19395	69	4	these	these	DT
19395	69	5	are	be	VBP
19395	69	6	at	at	IN
19395	69	7	the	the	DT
19395	69	8	limit	limit	NN
19395	69	9	of	of	IN
19395	69	10	visibility	visibility	NN
19395	69	11	that	that	IN
19395	69	12	Ptolemy	Ptolemy	NNP
19395	69	13	's	's	POS
19395	69	14	"	"	``
19395	69	15	Almagest	Almagest	NNP
19395	69	16	,	,	,
19395	69	17	"	"	''
19395	69	18	a	a	DT
19395	69	19	catalogue	catalogue	NN
19395	69	20	of	of	IN
19395	69	21	all	all	PDT
19395	69	22	the	the	DT
19395	69	23	stars	star	NNS
19395	69	24	whose	whose	WP$
19395	69	25	places	place	NNS
19395	69	26	were	be	VBD
19395	69	27	measured	measure	VBN
19395	69	28	with	with	IN
19395	69	29	the	the	DT
19395	69	30	simple	simple	JJ
19395	69	31	instruments	instrument	NNS
19395	69	32	of	of	IN
19395	69	33	the	the	DT
19395	69	34	Greek	greek	JJ
19395	69	35	astronomers	astronomer	NNS
19395	69	36	,	,	,
19395	69	37	contains	contain	VBZ
19395	69	38	only	only	RB
19395	69	39	1,022	1,022	CD
19395	69	40	stars	star	NNS
19395	69	41	.	.	.
19395	70	1	Back	back	RB
19395	70	2	of	of	IN
19395	70	3	Ptolemy	Ptolemy	NNP
19395	70	4	,	,	,
19395	70	5	through	through	IN
19395	70	6	the	the	DT
19395	70	7	speculations	speculation	NNS
19395	70	8	of	of	IN
19395	70	9	the	the	DT
19395	70	10	Greek	greek	JJ
19395	70	11	philosophers	philosopher	NNS
19395	70	12	,	,	,
19395	70	13	the	the	DT
19395	70	14	mysteries	mystery	NNS
19395	70	15	of	of	IN
19395	70	16	the	the	DT
19395	70	17	Egyptian	egyptian	JJ
19395	70	18	sun	sun	NN
19395	70	19	-	-	HYPH
19395	70	20	god	god	NNP
19395	70	21	,	,	,
19395	70	22	and	and	CC
19395	70	23	the	the	DT
19395	70	24	observations	observation	NNS
19395	70	25	of	of	IN
19395	70	26	the	the	DT
19395	70	27	ancient	ancient	JJ
19395	70	28	Chaldeans	Chaldeans	NNPS
19395	70	29	,	,	,
19395	70	30	the	the	DT
19395	70	31	rich	rich	JJ
19395	70	32	and	and	CC
19395	70	33	varied	varied	JJ
19395	70	34	traditions	tradition	NNS
19395	70	35	of	of	IN
19395	70	36	astronomy	astronomy	NN
19395	70	37	stretch	stretch	NN
19395	70	38	far	far	RB
19395	70	39	away	away	RB
19395	70	40	into	into	IN
19395	70	41	a	a	DT
19395	70	42	shadowy	shadowy	JJ
19395	70	43	past	past	NN
19395	70	44	.	.	.
19395	71	1	All	all	DT
19395	71	2	peoples	people	NNS
19395	71	3	,	,	,
19395	71	4	in	in	IN
19395	71	5	the	the	DT
19395	71	6	first	first	JJ
19395	71	7	stirrings	stirring	NNS
19395	71	8	of	of	IN
19395	71	9	their	-PRON-	PRP$
19395	71	10	intellectual	intellectual	JJ
19395	71	11	youth	youth	NN
19395	71	12	,	,	,
19395	71	13	drawn	draw	VBN
19395	71	14	by	by	IN
19395	71	15	the	the	DT
19395	71	16	nightly	nightly	JJ
19395	71	17	splendor	splendor	NN
19395	71	18	of	of	IN
19395	71	19	the	the	DT
19395	71	20	skies	sky	NNS
19395	71	21	and	and	CC
19395	71	22	the	the	DT
19395	71	23	ceaseless	ceaseless	NN
19395	71	24	motions	motion	NNS
19395	71	25	of	of	IN
19395	71	26	the	the	DT
19395	71	27	planets	planet	NNS
19395	71	28	,	,	,
19395	71	29	have	have	VBP
19395	71	30	set	set	VBN
19395	71	31	up	up	RP
19395	71	32	some	some	DT
19395	71	33	system	system	NN
19395	71	34	of	of	IN
19395	71	35	the	the	DT
19395	71	36	heavens	heavens	NNPS
19395	71	37	,	,	,
19395	71	38	in	in	IN
19395	71	39	which	which	WDT
19395	71	40	the	the	DT
19395	71	41	sense	sense	NN
19395	71	42	of	of	IN
19395	71	43	wonder	wonder	NN
19395	71	44	and	and	CC
19395	71	45	the	the	DT
19395	71	46	desire	desire	NN
19395	71	47	for	for	IN
19395	71	48	knowledge	knowledge	NN
19395	71	49	were	be	VBD
19395	71	50	no	no	RB
19395	71	51	less	less	RBR
19395	71	52	concerned	concerned	JJ
19395	71	53	than	than	IN
19395	71	54	the	the	DT
19395	71	55	practical	practical	JJ
19395	71	56	necessities	necessity	NNS
19395	71	57	of	of	IN
19395	71	58	life	life	NN
19395	71	59	.	.	.
19395	72	1	The	the	DT
19395	72	2	measurement	measurement	NN
19395	72	3	of	of	IN
19395	72	4	time	time	NN
19395	72	5	and	and	CC
19395	72	6	the	the	DT
19395	72	7	needs	need	NNS
19395	72	8	of	of	IN
19395	72	9	navigation	navigation	NN
19395	72	10	have	have	VBP
19395	72	11	always	always	RB
19395	72	12	stimulated	stimulate	VBN
19395	72	13	astronomical	astronomical	JJ
19395	72	14	research	research	NN
19395	72	15	,	,	,
19395	72	16	but	but	CC
19395	72	17	the	the	DT
19395	72	18	intellectual	intellectual	JJ
19395	72	19	demand	demand	NN
19395	72	20	has	have	VBZ
19395	72	21	been	be	VBN
19395	72	22	keen	keen	JJ
19395	72	23	from	from	IN
19395	72	24	the	the	DT
19395	72	25	first	first	JJ
19395	72	26	.	.	.
19395	73	1	Hipparchus	Hipparchus	NNP
19395	73	2	and	and	CC
19395	73	3	the	the	DT
19395	73	4	Greek	greek	JJ
19395	73	5	astronomers	astronomer	NNS
19395	73	6	of	of	IN
19395	73	7	the	the	DT
19395	73	8	Alexandrian	alexandrian	JJ
19395	73	9	school	school	NN
19395	73	10	,	,	,
19395	73	11	shaking	shake	VBG
19395	73	12	off	off	RP
19395	73	13	the	the	DT
19395	73	14	vagaries	vagary	NNS
19395	73	15	of	of	IN
19395	73	16	magic	magic	NN
19395	73	17	and	and	CC
19395	73	18	divination	divination	NN
19395	73	19	,	,	,
19395	73	20	placed	place	VBD
19395	73	21	astronomy	astronomy	NN
19395	73	22	on	on	IN
19395	73	23	a	a	DT
19395	73	24	scientific	scientific	JJ
19395	73	25	basis	basis	NN
19395	73	26	,	,	,
19395	73	27	though	though	IN
19395	73	28	the	the	DT
19395	73	29	reaction	reaction	NN
19395	73	30	of	of	IN
19395	73	31	the	the	DT
19395	73	32	Middle	Middle	NNP
19395	73	33	Ages	Ages	NNPS
19395	73	34	caused	cause	VBD
19395	73	35	even	even	RB
19395	73	36	such	such	PDT
19395	73	37	a	a	DT
19395	73	38	great	great	JJ
19395	73	39	astronomer	astronomer	NN
19395	73	40	as	as	IN
19395	73	41	Tycho	Tycho	NNP
19395	73	42	Brahe	Brahe	NNP
19395	73	43	himself	-PRON-	PRP
19395	73	44	to	to	TO
19395	73	45	revert	revert	VB
19395	73	46	for	for	IN
19395	73	47	a	a	DT
19395	73	48	time	time	NN
19395	73	49	to	to	IN
19395	73	50	the	the	DT
19395	73	51	practice	practice	NN
19395	73	52	of	of	IN
19395	73	53	astrology	astrology	NN
19395	73	54	.	.	.
19395	74	1	EARLY	EARLY	NNS
19395	74	2	INSTRUMENTS	INSTRUMENTS	NNP
19395	74	3	The	the	DT
19395	74	4	transparent	transparent	JJ
19395	74	5	sky	sky	NN
19395	74	6	of	of	IN
19395	74	7	Egypt	Egypt	NNP
19395	74	8	,	,	,
19395	74	9	rarely	rarely	RB
19395	74	10	obscured	obscure	VBN
19395	74	11	by	by	IN
19395	74	12	clouds	cloud	NNS
19395	74	13	,	,	,
19395	74	14	greatly	greatly	RB
19395	74	15	favored	favor	VBD
19395	74	16	Ptolemy	Ptolemy	NNP
19395	74	17	's	's	POS
19395	74	18	observations	observation	NNS
19395	74	19	.	.	.
19395	75	1	Here	here	RB
19395	75	2	was	be	VBD
19395	75	3	prepared	prepare	VBN
19395	75	4	his	-PRON-	PRP$
19395	75	5	great	great	JJ
19395	75	6	star	star	NN
19395	75	7	catalogue	catalogue	NN
19395	75	8	,	,	,
19395	75	9	based	base	VBN
19395	75	10	upon	upon	IN
19395	75	11	the	the	DT
19395	75	12	earlier	early	JJR
19395	75	13	observations	observation	NNS
19395	75	14	of	of	IN
19395	75	15	Hipparchus	Hipparchus	NNP
19395	75	16	,	,	,
19395	75	17	and	and	CC
19395	75	18	destined	destine	VBN
19395	75	19	to	to	TO
19395	75	20	remain	remain	VB
19395	75	21	alone	alone	JJ
19395	75	22	in	in	IN
19395	75	23	its	-PRON-	PRP$
19395	75	24	field	field	NN
19395	75	25	for	for	IN
19395	75	26	more	more	JJR
19395	75	27	than	than	IN
19395	75	28	twelve	twelve	CD
19395	75	29	centuries	century	NNS
19395	75	30	,	,	,
19395	75	31	until	until	IN
19395	75	32	Ulugh	Ulugh	NNP
19395	75	33	Bey	Bey	NNP
19395	75	34	,	,	,
19395	75	35	Prince	Prince	NNP
19395	75	36	of	of	IN
19395	75	37	Samarcand	Samarcand	NNP
19395	75	38	,	,	,
19395	75	39	repeated	repeat	VBD
19395	75	40	the	the	DT
19395	75	41	work	work	NN
19395	75	42	of	of	IN
19395	75	43	his	-PRON-	PRP$
19395	75	44	Greek	greek	JJ
19395	75	45	predecessor	predecessor	NN
19395	75	46	.	.	.
19395	76	1	Throughout	throughout	IN
19395	76	2	this	this	DT
19395	76	3	period	period	NN
19395	76	4	the	the	DT
19395	76	5	stars	star	NNS
19395	76	6	were	be	VBD
19395	76	7	looked	look	VBN
19395	76	8	upon	upon	IN
19395	76	9	mainly	mainly	RB
19395	76	10	as	as	IN
19395	76	11	points	point	NNS
19395	76	12	of	of	IN
19395	76	13	reference	reference	NN
19395	76	14	for	for	IN
19395	76	15	the	the	DT
19395	76	16	observation	observation	NN
19395	76	17	of	of	IN
19395	76	18	planetary	planetary	NN
19395	76	19	motions	motion	NNS
19395	76	20	,	,	,
19395	76	21	and	and	CC
19395	76	22	the	the	DT
19395	76	23	instruments	instrument	NNS
19395	76	24	of	of	IN
19395	76	25	observation	observation	NN
19395	76	26	underwent	undergo	VBD
19395	76	27	little	little	JJ
19395	76	28	change	change	NN
19395	76	29	.	.	.
19395	77	1	The	the	DT
19395	77	2	astrolabe	astrolabe	NN
19395	77	3	,	,	,
19395	77	4	which	which	WDT
19395	77	5	consists	consist	VBZ
19395	77	6	of	of	IN
19395	77	7	a	a	DT
19395	77	8	circle	circle	NN
19395	77	9	divided	divide	VBN
19395	77	10	into	into	IN
19395	77	11	degrees	degree	NNS
19395	77	12	,	,	,
19395	77	13	with	with	IN
19395	77	14	a	a	DT
19395	77	15	rotating	rotate	VBG
19395	77	16	diametral	diametral	JJ
19395	77	17	arm	arm	NN
19395	77	18	for	for	IN
19395	77	19	sighting	sight	VBG
19395	77	20	purposes	purpose	NNS
19395	77	21	,	,	,
19395	77	22	embodies	embody	VBZ
19395	77	23	their	-PRON-	PRP$
19395	77	24	essential	essential	JJ
19395	77	25	principle	principle	NN
19395	77	26	.	.	.
19395	78	1	In	in	IN
19395	78	2	its	-PRON-	PRP$
19395	78	3	simple	simple	JJ
19395	78	4	form	form	NN
19395	78	5	,	,	,
19395	78	6	the	the	DT
19395	78	7	astrolabe	astrolabe	NN
19395	78	8	was	be	VBD
19395	78	9	suspended	suspend	VBN
19395	78	10	in	in	IN
19395	78	11	a	a	DT
19395	78	12	vertical	vertical	JJ
19395	78	13	plane	plane	NN
19395	78	14	,	,	,
19395	78	15	and	and	CC
19395	78	16	the	the	DT
19395	78	17	stars	star	NNS
19395	78	18	were	be	VBD
19395	78	19	observed	observe	VBN
19395	78	20	by	by	IN
19395	78	21	bringing	bring	VBG
19395	78	22	the	the	DT
19395	78	23	sights	sight	NNS
19395	78	24	on	on	IN
19395	78	25	the	the	DT
19395	78	26	movable	movable	JJ
19395	78	27	diameter	diameter	NN
19395	78	28	to	to	TO
19395	78	29	bear	bear	VB
19395	78	30	upon	upon	IN
19395	78	31	them	-PRON-	PRP
19395	78	32	.	.	.
19395	79	1	Their	-PRON-	PRP$
19395	79	2	altitude	altitude	NN
19395	79	3	was	be	VBD
19395	79	4	then	then	RB
19395	79	5	read	read	VBN
19395	79	6	off	off	RP
19395	79	7	on	on	IN
19395	79	8	the	the	DT
19395	79	9	circle	circle	NN
19395	79	10	.	.	.
19395	80	1	Ultimately	ultimately	RB
19395	80	2	,	,	,
19395	80	3	the	the	DT
19395	80	4	circle	circle	NN
19395	80	5	of	of	IN
19395	80	6	the	the	DT
19395	80	7	astrolabe	astrolabe	NNP
19395	80	8	,	,	,
19395	80	9	mounted	mount	VBN
19395	80	10	with	with	IN
19395	80	11	one	one	CD
19395	80	12	of	of	IN
19395	80	13	its	-PRON-	PRP$
19395	80	14	diameters	diameter	NNS
19395	80	15	parallel	parallel	JJ
19395	80	16	to	to	IN
19395	80	17	the	the	DT
19395	80	18	earth	earth	NN
19395	80	19	's	's	POS
19395	80	20	axis	axis	NN
19395	80	21	,	,	,
19395	80	22	became	become	VBD
19395	80	23	the	the	DT
19395	80	24	armillary	armillary	JJ
19395	80	25	sphere	sphere	NN
19395	80	26	,	,	,
19395	80	27	the	the	DT
19395	80	28	precursor	precursor	NN
19395	80	29	of	of	IN
19395	80	30	our	-PRON-	PRP$
19395	80	31	modern	modern	JJ
19395	80	32	equatorial	equatorial	JJ
19395	80	33	telescope	telescope	NN
19395	80	34	.	.	.
19395	81	1	Great	great	JJ
19395	81	2	stone	stone	NN
19395	81	3	quadrants	quadrant	NNS
19395	81	4	fixed	fix	VBN
19395	81	5	in	in	IN
19395	81	6	the	the	DT
19395	81	7	meridian	meridian	NN
19395	81	8	were	be	VBD
19395	81	9	also	also	RB
19395	81	10	employed	employ	VBN
19395	81	11	from	from	IN
19395	81	12	very	very	RB
19395	81	13	early	early	JJ
19395	81	14	times	time	NNS
19395	81	15	.	.	.
19395	82	1	Out	out	IN
19395	82	2	of	of	IN
19395	82	3	such	such	JJ
19395	82	4	furnishings	furnishing	NNS
19395	82	5	,	,	,
19395	82	6	little	little	JJ
19395	82	7	modified	modify	VBN
19395	82	8	by	by	IN
19395	82	9	the	the	DT
19395	82	10	lapse	lapse	NN
19395	82	11	of	of	IN
19395	82	12	centuries	century	NNS
19395	82	13	,	,	,
19395	82	14	was	be	VBD
19395	82	15	provided	provide	VBN
19395	82	16	the	the	DT
19395	82	17	elaborate	elaborate	JJ
19395	82	18	instrumental	instrumental	JJ
19395	82	19	equipment	equipment	NN
19395	82	20	of	of	IN
19395	82	21	Uranibourg	Uranibourg	NNP
19395	82	22	,	,	,
19395	82	23	the	the	DT
19395	82	24	great	great	JJ
19395	82	25	observatory	observatory	NN
19395	82	26	built	build	VBN
19395	82	27	by	by	IN
19395	82	28	Tycho	Tycho	NNP
19395	82	29	Brahe	Brahe	NNP
19395	82	30	on	on	IN
19395	82	31	the	the	DT
19395	82	32	Danish	danish	JJ
19395	82	33	island	island	NN
19395	82	34	of	of	IN
19395	82	35	Huen	Huen	NNP
19395	82	36	in	in	IN
19395	82	37	1576	1576	CD
19395	82	38	.	.	.
19395	83	1	In	in	IN
19395	83	2	this	this	DT
19395	83	3	"	"	``
19395	83	4	City	City	NNP
19395	83	5	of	of	IN
19395	83	6	the	the	DT
19395	83	7	Heavens	Heavens	NNPS
19395	83	8	,	,	,
19395	83	9	"	"	''
19395	83	10	still	still	RB
19395	83	11	dependent	dependent	JJ
19395	83	12	solely	solely	RB
19395	83	13	upon	upon	IN
19395	83	14	the	the	DT
19395	83	15	unaided	unaided	JJ
19395	83	16	eye	eye	NN
19395	83	17	as	as	IN
19395	83	18	a	a	DT
19395	83	19	collector	collector	NN
19395	83	20	of	of	IN
19395	83	21	starlight	starlight	NN
19395	83	22	,	,	,
19395	83	23	Tycho	Tycho	NNP
19395	83	24	made	make	VBD
19395	83	25	those	those	DT
19395	83	26	invaluable	invaluable	JJ
19395	83	27	observations	observation	NNS
19395	83	28	that	that	WDT
19395	83	29	enabled	enable	VBD
19395	83	30	Kepler	Kepler	NNP
19395	83	31	to	to	TO
19395	83	32	deduce	deduce	VB
19395	83	33	the	the	DT
19395	83	34	true	true	JJ
19395	83	35	laws	law	NNS
19395	83	36	of	of	IN
19395	83	37	planetary	planetary	JJ
19395	83	38	motion	motion	NN
19395	83	39	.	.	.
19395	84	1	But	but	CC
19395	84	2	after	after	IN
19395	84	3	all	all	PDT
19395	84	4	these	these	DT
19395	84	5	centuries	century	NNS
19395	84	6	the	the	DT
19395	84	7	sidereal	sidereal	JJ
19395	84	8	world	world	NN
19395	84	9	embraced	embrace	VBD
19395	84	10	no	no	DT
19395	84	11	objects	object	NNS
19395	84	12	,	,	,
19395	84	13	barring	bar	VBG
19395	84	14	an	an	DT
19395	84	15	occasional	occasional	JJ
19395	84	16	comet	comet	NN
19395	84	17	or	or	CC
19395	84	18	temporary	temporary	JJ
19395	84	19	star	star	NN
19395	84	20	,	,	,
19395	84	21	that	that	WDT
19395	84	22	lay	lie	VBD
19395	84	23	beyond	beyond	IN
19395	84	24	the	the	DT
19395	84	25	vision	vision	NN
19395	84	26	of	of	IN
19395	84	27	the	the	DT
19395	84	28	earliest	early	JJS
19395	84	29	astronomers	astronomer	NNS
19395	84	30	.	.	.
19395	85	1	The	the	DT
19395	85	2	conceptions	conception	NNS
19395	85	3	of	of	IN
19395	85	4	the	the	DT
19395	85	5	stellar	stellar	JJ
19395	85	6	universe	universe	NN
19395	85	7	,	,	,
19395	85	8	except	except	IN
19395	85	9	those	those	DT
19395	85	10	that	that	WDT
19395	85	11	ignored	ignore	VBD
19395	85	12	the	the	DT
19395	85	13	solid	solid	JJ
19395	85	14	ground	ground	NN
19395	85	15	of	of	IN
19395	85	16	observation	observation	NN
19395	85	17	,	,	,
19395	85	18	were	be	VBD
19395	85	19	limited	limit	VBN
19395	85	20	by	by	IN
19395	85	21	the	the	DT
19395	85	22	small	small	JJ
19395	85	23	aperture	aperture	NN
19395	85	24	of	of	IN
19395	85	25	the	the	DT
19395	85	26	human	human	JJ
19395	85	27	eye	eye	NN
19395	85	28	.	.	.
19395	86	1	But	but	CC
19395	86	2	the	the	DT
19395	86	3	dawn	dawn	NN
19395	86	4	of	of	IN
19395	86	5	another	another	DT
19395	86	6	age	age	NN
19395	86	7	was	be	VBD
19395	86	8	at	at	IN
19395	86	9	hand	hand	NN
19395	86	10	.	.	.
19395	87	1	[	[	-LRB-
19395	87	2	Illustration	illustration	NN
19395	87	3	:	:	:
19395	87	4	Fig	Fig	NNP
19395	87	5	.	.	.
19395	88	1	2	2	LS
19395	88	2	.	.	.
19395	89	1	The	the	DT
19395	89	2	Great	Great	NNP
19395	89	3	Nebula	Nebula	NNP
19395	89	4	in	in	IN
19395	89	5	Orion	Orion	NNP
19395	89	6	(	(	-LRB-
19395	89	7	Pease	Pease	NNP
19395	89	8	)	)	-RRB-
19395	89	9	.	.	.
19395	90	1	Photographed	photograph	VBN
19395	90	2	with	with	IN
19395	90	3	the	the	DT
19395	90	4	100-inch	100-inch	CD
19395	90	5	telescope	telescope	NN
19395	90	6	.	.	.
19395	91	1	This	this	DT
19395	91	2	short	short	JJ
19395	91	3	-	-	HYPH
19395	91	4	exposure	exposure	NN
19395	91	5	photograph	photograph	NN
19395	91	6	shows	show	VBZ
19395	91	7	only	only	RB
19395	91	8	the	the	DT
19395	91	9	bright	bright	JJ
19395	91	10	central	central	JJ
19395	91	11	part	part	NN
19395	91	12	of	of	IN
19395	91	13	the	the	DT
19395	91	14	nebula	nebula	NN
19395	91	15	.	.	.
19395	92	1	A	a	DT
19395	92	2	longer	long	JJR
19395	92	3	exposure	exposure	NN
19395	92	4	reveals	reveal	VBZ
19395	92	5	a	a	DT
19395	92	6	vast	vast	JJ
19395	92	7	outlying	outlying	JJ
19395	92	8	region	region	NN
19395	92	9	.	.	.
19395	92	10	]	]	-RRB-
19395	93	1	The	the	DT
19395	93	2	dominance	dominance	NN
19395	93	3	of	of	IN
19395	93	4	the	the	DT
19395	93	5	sun	sun	NN
19395	93	6	as	as	IN
19395	93	7	the	the	DT
19395	93	8	central	central	JJ
19395	93	9	body	body	NN
19395	93	10	of	of	IN
19395	93	11	the	the	DT
19395	93	12	solar	solar	JJ
19395	93	13	system	system	NN
19395	93	14	,	,	,
19395	93	15	recognized	recognize	VBN
19395	93	16	by	by	IN
19395	93	17	Aristarchus	Aristarchus	NNP
19395	93	18	of	of	IN
19395	93	19	Samos	Samos	NNP
19395	93	20	nearly	nearly	RB
19395	93	21	three	three	CD
19395	93	22	centuries	century	NNS
19395	93	23	before	before	IN
19395	93	24	the	the	DT
19395	93	25	Christian	christian	JJ
19395	93	26	era	era	NN
19395	93	27	,	,	,
19395	93	28	but	but	CC
19395	93	29	subsequently	subsequently	RB
19395	93	30	denied	deny	VBN
19395	93	31	under	under	IN
19395	93	32	the	the	DT
19395	93	33	authority	authority	NN
19395	93	34	of	of	IN
19395	93	35	Ptolemy	Ptolemy	NNP
19395	93	36	and	and	CC
19395	93	37	the	the	DT
19395	93	38	teachings	teaching	NNS
19395	93	39	of	of	IN
19395	93	40	the	the	DT
19395	93	41	Church	Church	NNP
19395	93	42	,	,	,
19395	93	43	was	be	VBD
19395	93	44	reaffirmed	reaffirm	VBN
19395	93	45	by	by	IN
19395	93	46	the	the	DT
19395	93	47	Polish	polish	JJ
19395	93	48	monk	monk	NN
19395	93	49	Copernicus	Copernicus	NNP
19395	93	50	in	in	IN
19395	93	51	1543	1543	CD
19395	93	52	.	.	.
19395	94	1	Kepler	Kepler	NNP
19395	94	2	's	's	POS
19395	94	3	laws	law	NNS
19395	94	4	of	of	IN
19395	94	5	the	the	DT
19395	94	6	motions	motion	NNS
19395	94	7	of	of	IN
19395	94	8	the	the	DT
19395	94	9	planets	planet	NNS
19395	94	10	,	,	,
19395	94	11	showing	show	VBG
19395	94	12	them	-PRON-	PRP
19395	94	13	to	to	TO
19395	94	14	revolve	revolve	VB
19395	94	15	in	in	IN
19395	94	16	ellipses	ellipsis	NNS
19395	94	17	instead	instead	RB
19395	94	18	of	of	IN
19395	94	19	circles	circle	NNS
19395	94	20	,	,	,
19395	94	21	removed	remove	VBD
19395	94	22	the	the	DT
19395	94	23	last	last	JJ
19395	94	24	defect	defect	NN
19395	94	25	of	of	IN
19395	94	26	the	the	DT
19395	94	27	Copernican	copernican	JJ
19395	94	28	system	system	NN
19395	94	29	,	,	,
19395	94	30	and	and	CC
19395	94	31	left	leave	VBD
19395	94	32	no	no	DT
19395	94	33	room	room	NN
19395	94	34	for	for	IN
19395	94	35	its	-PRON-	PRP$
19395	94	36	rejection	rejection	NN
19395	94	37	.	.	.
19395	95	1	But	but	CC
19395	95	2	both	both	CC
19395	95	3	the	the	DT
19395	95	4	world	world	NN
19395	95	5	and	and	CC
19395	95	6	the	the	DT
19395	95	7	Church	Church	NNP
19395	95	8	clung	clung	NN
19395	95	9	to	to	IN
19395	95	10	tradition	tradition	NN
19395	95	11	,	,	,
19395	95	12	and	and	CC
19395	95	13	some	some	DT
19395	95	14	visible	visible	JJ
19395	95	15	demonstration	demonstration	NN
19395	95	16	was	be	VBD
19395	95	17	urgently	urgently	RB
19395	95	18	needed	need	VBN
19395	95	19	.	.	.
19395	96	1	This	this	DT
19395	96	2	was	be	VBD
19395	96	3	supplied	supply	VBN
19395	96	4	by	by	IN
19395	96	5	Galileo	Galileo	NNP
19395	96	6	through	through	IN
19395	96	7	his	-PRON-	PRP$
19395	96	8	invention	invention	NN
19395	96	9	of	of	IN
19395	96	10	the	the	DT
19395	96	11	telescope	telescope	NN
19395	96	12	.	.	.
19395	97	1	[	[	-LRB-
19395	97	2	Illustration	illustration	NN
19395	97	3	:	:	:
19395	97	4	Fig	Fig	NNP
19395	97	5	.	.	.
19395	98	1	3	3	LS
19395	98	2	.	.	.
19395	99	1	Model	model	NN
19395	99	2	by	by	IN
19395	99	3	Ellerman	Ellerman	NNP
19395	99	4	of	of	IN
19395	99	5	summit	summit	NN
19395	99	6	of	of	IN
19395	99	7	Mount	Mount	NNP
19395	99	8	Wilson	Wilson	NNP
19395	99	9	,	,	,
19395	99	10	showing	show	VBG
19395	99	11	the	the	DT
19395	99	12	observatory	observatory	JJ
19395	99	13	buildings	building	NNS
19395	99	14	among	among	IN
19395	99	15	the	the	DT
19395	99	16	trees	tree	NNS
19395	99	17	and	and	CC
19395	99	18	bushes	bush	NNS
19395	99	19	.	.	.
19395	100	1	The	the	DT
19395	100	2	60-foot	60-foot	CD
19395	100	3	tower	tower	NN
19395	100	4	on	on	IN
19395	100	5	the	the	DT
19395	100	6	extreme	extreme	JJ
19395	100	7	left	left	NN
19395	100	8	,	,	,
19395	100	9	which	which	WDT
19395	100	10	is	be	VBZ
19395	100	11	at	at	IN
19395	100	12	the	the	DT
19395	100	13	edge	edge	NN
19395	100	14	of	of	IN
19395	100	15	a	a	DT
19395	100	16	precipitous	precipitous	JJ
19395	100	17	cañon	cañon	NN
19395	100	18	1,500	1,500	CD
19395	100	19	feet	foot	NNS
19395	100	20	deep	deep	JJ
19395	100	21	,	,	,
19395	100	22	is	be	VBZ
19395	100	23	the	the	DT
19395	100	24	vertical	vertical	JJ
19395	100	25	telescope	telescope	NN
19395	100	26	of	of	IN
19395	100	27	the	the	DT
19395	100	28	Smithsonian	Smithsonian	NNP
19395	100	29	Astrophysical	Astrophysical	NNP
19395	100	30	Observatory	Observatory	NNP
19395	100	31	.	.	.
19395	101	1	Above	above	IN
19395	101	2	it	-PRON-	PRP
19395	101	3	are	be	VBP
19395	101	4	the	the	DT
19395	101	5	"	"	``
19395	101	6	Monastery	Monastery	NNP
19395	101	7	"	"	''
19395	101	8	and	and	CC
19395	101	9	other	other	JJ
19395	101	10	buildings	building	NNS
19395	101	11	used	use	VBN
19395	101	12	as	as	IN
19395	101	13	quarters	quarter	NNS
19395	101	14	by	by	IN
19395	101	15	the	the	DT
19395	101	16	astronomers	astronomer	NNS
19395	101	17	of	of	IN
19395	101	18	the	the	DT
19395	101	19	Mount	Mount	NNP
19395	101	20	Wilson	Wilson	NNP
19395	101	21	Observatory	Observatory	NNP
19395	101	22	while	while	IN
19395	101	23	at	at	IN
19395	101	24	work	work	NN
19395	101	25	on	on	IN
19395	101	26	the	the	DT
19395	101	27	mountain	mountain	NN
19395	101	28	.	.	.
19395	102	1	(	(	-LRB-
19395	102	2	The	the	DT
19395	102	3	offices	office	NNS
19395	102	4	,	,	,
19395	102	5	computing	compute	VBG
19395	102	6	-	-	HYPH
19395	102	7	rooms	room	NNS
19395	102	8	,	,	,
19395	102	9	laboratories	laboratory	NNS
19395	102	10	,	,	,
19395	102	11	and	and	CC
19395	102	12	shops	shop	NNS
19395	102	13	are	be	VBP
19395	102	14	in	in	IN
19395	102	15	Pasadena	Pasadena	NNP
19395	102	16	.	.	.
19395	102	17	)	)	-RRB-
19395	103	1	Following	follow	VBG
19395	103	2	the	the	DT
19395	103	3	ridge	ridge	NN
19395	103	4	,	,	,
19395	103	5	we	-PRON-	PRP
19395	103	6	come	come	VBP
19395	103	7	successively	successively	RB
19395	103	8	to	to	IN
19395	103	9	the	the	DT
19395	103	10	dome	dome	NN
19395	103	11	of	of	IN
19395	103	12	the	the	DT
19395	103	13	10-inch	10-inch	CD
19395	103	14	photographic	photographic	JJ
19395	103	15	telescope	telescope	NN
19395	103	16	,	,	,
19395	103	17	the	the	DT
19395	103	18	power	power	NN
19395	103	19	-	-	HYPH
19395	103	20	house	house	NN
19395	103	21	,	,	,
19395	103	22	laboratory	laboratory	NN
19395	103	23	,	,	,
19395	103	24	Snow	Snow	NNP
19395	103	25	horizontal	horizontal	JJ
19395	103	26	telescope	telescope	NN
19395	103	27	,	,	,
19395	103	28	60-foot	60-foot	CD
19395	103	29	-	-	HYPH
19395	103	30	tower	tower	NN
19395	103	31	telescope	telescope	NN
19395	103	32	,	,	,
19395	103	33	and	and	CC
19395	103	34	150-foot	150-foot	CD
19395	103	35	-	-	HYPH
19395	103	36	tower	tower	NN
19395	103	37	telescope	telescope	NN
19395	103	38	,	,	,
19395	103	39	these	these	DT
19395	103	40	last	last	JJ
19395	103	41	three	three	CD
19395	103	42	used	use	VBN
19395	103	43	for	for	IN
19395	103	44	the	the	DT
19395	103	45	study	study	NN
19395	103	46	of	of	IN
19395	103	47	the	the	DT
19395	103	48	sun	sun	NN
19395	103	49	.	.	.
19395	104	1	The	the	DT
19395	104	2	dome	dome	NN
19395	104	3	of	of	IN
19395	104	4	the	the	DT
19395	104	5	60-inch	60-inch	CD
19395	104	6	reflecting	reflect	VBG
19395	104	7	telescope	telescope	NN
19395	104	8	is	be	VBZ
19395	104	9	just	just	RB
19395	104	10	below	below	IN
19395	104	11	the	the	DT
19395	104	12	150-foot	150-foot	CD
19395	104	13	tower	tower	NN
19395	104	14	,	,	,
19395	104	15	while	while	IN
19395	104	16	that	that	DT
19395	104	17	of	of	IN
19395	104	18	the	the	DT
19395	104	19	100-inch	100-inch	CD
19395	104	20	telescope	telescope	NN
19395	104	21	is	be	VBZ
19395	104	22	farther	farth	JJR
19395	104	23	to	to	IN
19395	104	24	the	the	DT
19395	104	25	right	right	NN
19395	104	26	.	.	.
19395	105	1	The	the	DT
19395	105	2	altitude	altitude	NN
19395	105	3	of	of	IN
19395	105	4	Mount	Mount	NNP
19395	105	5	Wilson	Wilson	NNP
19395	105	6	is	be	VBZ
19395	105	7	about	about	RB
19395	105	8	5,900	5,900	CD
19395	105	9	feet	foot	NNS
19395	105	10	.	.	.
19395	105	11	]	]	-RRB-
19395	106	1	The	the	DT
19395	106	2	crystalline	crystalline	JJ
19395	106	3	lens	lens	NN
19395	106	4	of	of	IN
19395	106	5	the	the	DT
19395	106	6	human	human	JJ
19395	106	7	eye	eye	NN
19395	106	8	,	,	,
19395	106	9	limited	limit	VBN
19395	106	10	by	by	IN
19395	106	11	the	the	DT
19395	106	12	iris	iris	NN
19395	106	13	to	to	IN
19395	106	14	a	a	DT
19395	106	15	maximum	maximum	JJ
19395	106	16	opening	opening	NN
19395	106	17	about	about	RB
19395	106	18	one	one	CD
19395	106	19	-	-	HYPH
19395	106	20	quarter	quarter	NN
19395	106	21	of	of	IN
19395	106	22	an	an	DT
19395	106	23	inch	inch	NN
19395	106	24	in	in	IN
19395	106	25	diameter	diameter	NN
19395	106	26	,	,	,
19395	106	27	was	be	VBD
19395	106	28	the	the	DT
19395	106	29	only	only	JJ
19395	106	30	collector	collector	NN
19395	106	31	of	of	IN
19395	106	32	starlight	starlight	NN
19395	106	33	available	available	JJ
19395	106	34	to	to	IN
19395	106	35	the	the	DT
19395	106	36	Greek	greek	JJ
19395	106	37	and	and	CC
19395	106	38	Arabian	arabian	JJ
19395	106	39	astronomers	astronomer	NNS
19395	106	40	.	.	.
19395	107	1	Galileo	Galileo	NNP
19395	107	2	's	's	POS
19395	107	3	telescope	telescope	NN
19395	107	4	,	,	,
19395	107	5	which	which	WDT
19395	107	6	in	in	IN
19395	107	7	1610	1610	CD
19395	107	8	suddenly	suddenly	RB
19395	107	9	pushed	push	VBD
19395	107	10	out	out	RP
19395	107	11	the	the	DT
19395	107	12	boundaries	boundary	NNS
19395	107	13	of	of	IN
19395	107	14	the	the	DT
19395	107	15	known	known	JJ
19395	107	16	stellar	stellar	JJ
19395	107	17	universe	universe	NN
19395	107	18	and	and	CC
19395	107	19	brought	bring	VBD
19395	107	20	many	many	JJ
19395	107	21	thousands	thousand	NNS
19395	107	22	of	of	IN
19395	107	23	stars	star	NNS
19395	107	24	into	into	IN
19395	107	25	range	range	NN
19395	107	26	,	,	,
19395	107	27	had	have	VBD
19395	107	28	a	a	DT
19395	107	29	lens	lens	NN
19395	107	30	about	about	RB
19395	107	31	2	2	CD
19395	107	32	-	-	SYM
19395	107	33	1/4	1/4	CD
19395	107	34	inches	inch	NNS
19395	107	35	in	in	IN
19395	107	36	diameter	diameter	NN
19395	107	37	.	.	.
19395	108	1	The	the	DT
19395	108	2	area	area	NN
19395	108	3	of	of	IN
19395	108	4	this	this	DT
19395	108	5	lens	lens	NN
19395	108	6	,	,	,
19395	108	7	proportional	proportional	JJ
19395	108	8	to	to	IN
19395	108	9	the	the	DT
19395	108	10	square	square	NN
19395	108	11	of	of	IN
19395	108	12	its	-PRON-	PRP$
19395	108	13	diameter	diameter	NN
19395	108	14	,	,	,
19395	108	15	was	be	VBD
19395	108	16	about	about	RB
19395	108	17	eighty	eighty	CD
19395	108	18	-	-	HYPH
19395	108	19	one	one	CD
19395	108	20	times	time	NNS
19395	108	21	that	that	DT
19395	108	22	of	of	IN
19395	108	23	the	the	DT
19395	108	24	pupil	pupil	NN
19395	108	25	of	of	IN
19395	108	26	the	the	DT
19395	108	27	eye	eye	NN
19395	108	28	.	.	.
19395	109	1	This	this	DT
19395	109	2	great	great	JJ
19395	109	3	increase	increase	NN
19395	109	4	in	in	IN
19395	109	5	the	the	DT
19395	109	6	amount	amount	NN
19395	109	7	of	of	IN
19395	109	8	light	light	NN
19395	109	9	collected	collect	VBN
19395	109	10	should	should	MD
19395	109	11	bring	bring	VB
19395	109	12	to	to	TO
19395	109	13	view	view	VB
19395	109	14	stars	star	VBZ
19395	109	15	down	down	RP
19395	109	16	to	to	IN
19395	109	17	magnitude	magnitude	NN
19395	109	18	10.5	10.5	CD
19395	109	19	,	,	,
19395	109	20	of	of	IN
19395	109	21	which	which	WDT
19395	109	22	nearly	nearly	RB
19395	109	23	half	half	PDT
19395	109	24	a	a	DT
19395	109	25	million	million	CD
19395	109	26	are	be	VBP
19395	109	27	known	know	VBN
19395	109	28	to	to	TO
19395	109	29	exist	exist	VB
19395	109	30	.	.	.
19395	110	1	It	-PRON-	PRP
19395	110	2	is	be	VBZ
19395	110	3	not	not	RB
19395	110	4	too	too	RB
19395	110	5	much	much	JJ
19395	110	6	to	to	TO
19395	110	7	say	say	VB
19395	110	8	that	that	IN
19395	110	9	Galileo	Galileo	NNP
19395	110	10	's	's	POS
19395	110	11	telescope	telescope	NN
19395	110	12	revolutionized	revolutionize	VBD
19395	110	13	human	human	JJ
19395	110	14	thought	thought	NN
19395	110	15	.	.	.
19395	111	1	Turned	turn	VBN
19395	111	2	to	to	IN
19395	111	3	the	the	DT
19395	111	4	moon	moon	NN
19395	111	5	,	,	,
19395	111	6	it	-PRON-	PRP
19395	111	7	revealed	reveal	VBD
19395	111	8	mountains	mountain	NNS
19395	111	9	,	,	,
19395	111	10	plains	plain	NNS
19395	111	11	,	,	,
19395	111	12	and	and	CC
19395	111	13	valleys	valley	NNS
19395	111	14	,	,	,
19395	111	15	while	while	IN
19395	111	16	the	the	DT
19395	111	17	sun	sun	NN
19395	111	18	,	,	,
19395	111	19	previously	previously	RB
19395	111	20	supposed	suppose	VBN
19395	111	21	immaculate	immaculate	JJ
19395	111	22	in	in	IN
19395	111	23	its	-PRON-	PRP$
19395	111	24	perfection	perfection	NN
19395	111	25	,	,	,
19395	111	26	was	be	VBD
19395	111	27	seen	see	VBN
19395	111	28	to	to	TO
19395	111	29	be	be	VB
19395	111	30	blemished	blemish	VBN
19395	111	31	with	with	IN
19395	111	32	dark	dark	JJ
19395	111	33	spots	spot	NNS
19395	111	34	changing	change	VBG
19395	111	35	from	from	IN
19395	111	36	day	day	NN
19395	111	37	to	to	IN
19395	111	38	day	day	NN
19395	111	39	.	.	.
19395	112	1	Jupiter	Jupiter	NNP
19395	112	2	,	,	,
19395	112	3	shown	show	VBN
19395	112	4	to	to	TO
19395	112	5	be	be	VB
19395	112	6	accompanied	accompany	VBN
19395	112	7	by	by	IN
19395	112	8	four	four	CD
19395	112	9	encircling	encircling	NN
19395	112	10	satellites	satellite	NNS
19395	112	11	,	,	,
19395	112	12	afforded	afford	VBD
19395	112	13	a	a	DT
19395	112	14	picture	picture	NN
19395	112	15	in	in	IN
19395	112	16	miniature	miniature	NN
19395	112	17	of	of	IN
19395	112	18	the	the	DT
19395	112	19	solar	solar	JJ
19395	112	20	system	system	NN
19395	112	21	,	,	,
19395	112	22	and	and	CC
19395	112	23	strongly	strongly	RB
19395	112	24	supported	support	VBD
19395	112	25	the	the	DT
19395	112	26	Copernican	copernican	JJ
19395	112	27	view	view	NN
19395	112	28	of	of	IN
19395	112	29	its	-PRON-	PRP$
19395	112	30	organization	organization	NN
19395	112	31	,	,	,
19395	112	32	which	which	WDT
19395	112	33	was	be	VBD
19395	112	34	conclusively	conclusively	RB
19395	112	35	demonstrated	demonstrate	VBN
19395	112	36	by	by	IN
19395	112	37	Galileo	Galileo	NNP
19395	112	38	's	's	POS
19395	112	39	discovery	discovery	NN
19395	112	40	of	of	IN
19395	112	41	the	the	DT
19395	112	42	changing	change	VBG
19395	112	43	phases	phase	NNS
19395	112	44	of	of	IN
19395	112	45	Venus	Venus	NNP
19395	112	46	and	and	CC
19395	112	47	the	the	DT
19395	112	48	variation	variation	NN
19395	112	49	of	of	IN
19395	112	50	its	-PRON-	PRP$
19395	112	51	apparent	apparent	JJ
19395	112	52	diameter	diameter	NN
19395	112	53	during	during	IN
19395	112	54	its	-PRON-	PRP$
19395	112	55	revolution	revolution	NN
19395	112	56	about	about	IN
19395	112	57	the	the	DT
19395	112	58	sun	sun	NN
19395	112	59	.	.	.
19395	113	1	Galileo	Galileo	NNP
19395	113	2	's	's	POS
19395	113	3	proof	proof	NN
19395	113	4	of	of	IN
19395	113	5	the	the	DT
19395	113	6	Copernican	copernican	JJ
19395	113	7	theory	theory	NN
19395	113	8	marked	mark	VBD
19395	113	9	the	the	DT
19395	113	10	downfall	downfall	NN
19395	113	11	of	of	IN
19395	113	12	mediævalism	mediævalism	NN
19395	113	13	and	and	CC
19395	113	14	established	establish	VBD
19395	113	15	astronomy	astronomy	NN
19395	113	16	on	on	IN
19395	113	17	a	a	DT
19395	113	18	firm	firm	JJ
19395	113	19	foundation	foundation	NN
19395	113	20	.	.	.
19395	114	1	But	but	CC
19395	114	2	while	while	IN
19395	114	3	his	-PRON-	PRP$
19395	114	4	telescope	telescope	NN
19395	114	5	multiplied	multiply	VBD
19395	114	6	a	a	DT
19395	114	7	hundredfold	hundredfold	NN
19395	114	8	the	the	DT
19395	114	9	number	number	NN
19395	114	10	of	of	IN
19395	114	11	visible	visible	JJ
19395	114	12	stars	star	NNS
19395	114	13	,	,	,
19395	114	14	more	more	JJR
19395	114	15	than	than	IN
19395	114	16	a	a	DT
19395	114	17	century	century	NN
19395	114	18	elapsed	elapse	VBN
19395	114	19	before	before	IN
19395	114	20	the	the	DT
19395	114	21	true	true	JJ
19395	114	22	possibilities	possibility	NNS
19395	114	23	of	of	IN
19395	114	24	sidereal	sidereal	JJ
19395	114	25	astronomy	astronomy	NN
19395	114	26	were	be	VBD
19395	114	27	perceived	perceive	VBN
19395	114	28	.	.	.
19395	115	1	[	[	-LRB-
19395	115	2	Illustration	illustration	NN
19395	115	3	:	:	:
19395	115	4	Fig	Fig	NNP
19395	115	5	.	.	.
19395	116	1	4	4	LS
19395	116	2	.	.	.
19395	117	1	The	the	DT
19395	117	2	100-inch	100-inch	CD
19395	117	3	Hooker	Hooker	NNP
19395	117	4	telescope	telescope	NN
19395	117	5	.	.	.
19395	117	6	]	]	-RRB-
19395	118	1	STRUCTURE	STRUCTURE	NNP
19395	118	2	OF	of	IN
19395	118	3	THE	the	DT
19395	118	4	UNIVERSE	UNIVERSE	NNP
19395	118	5	Sir	Sir	NNP
19395	118	6	William	William	NNP
19395	118	7	Herschel	Herschel	NNP
19395	118	8	was	be	VBD
19395	118	9	the	the	DT
19395	118	10	first	first	JJ
19395	118	11	astronomer	astronomer	NN
19395	118	12	to	to	TO
19395	118	13	make	make	VB
19395	118	14	a	a	DT
19395	118	15	serious	serious	JJ
19395	118	16	attack	attack	NN
19395	118	17	upon	upon	IN
19395	118	18	the	the	DT
19395	118	19	problem	problem	NN
19395	118	20	of	of	IN
19395	118	21	the	the	DT
19395	118	22	structure	structure	NN
19395	118	23	of	of	IN
19395	118	24	the	the	DT
19395	118	25	stellar	stellar	JJ
19395	118	26	universe	universe	NN
19395	118	27	.	.	.
19395	119	1	In	in	IN
19395	119	2	his	-PRON-	PRP$
19395	119	3	first	first	JJ
19395	119	4	memoir	memoir	NN
19395	119	5	on	on	IN
19395	119	6	the	the	DT
19395	119	7	"	"	``
19395	119	8	Construction	Construction	NNP
19395	119	9	of	of	IN
19395	119	10	the	the	DT
19395	119	11	Heavens	Heavens	NNPS
19395	119	12	,	,	,
19395	119	13	"	"	''
19395	119	14	read	read	VBN
19395	119	15	before	before	IN
19395	119	16	the	the	DT
19395	119	17	Royal	Royal	NNP
19395	119	18	Society	Society	NNP
19395	119	19	in	in	IN
19395	119	20	1784	1784	CD
19395	119	21	,	,	,
19395	119	22	he	-PRON-	PRP
19395	119	23	wrote	write	VBD
19395	119	24	as	as	IN
19395	119	25	follows	follow	VBZ
19395	119	26	:	:	:
19395	119	27	"	"	``
19395	119	28	Hitherto	Hitherto	NNP
19395	119	29	the	the	DT
19395	119	30	sidereal	sidereal	JJ
19395	119	31	heavens	heavens	NNPS
19395	119	32	have	have	VBP
19395	119	33	,	,	,
19395	119	34	not	not	RB
19395	119	35	inadequately	inadequately	RB
19395	119	36	for	for	IN
19395	119	37	the	the	DT
19395	119	38	purpose	purpose	NN
19395	119	39	designed	design	VBN
19395	119	40	,	,	,
19395	119	41	been	be	VBN
19395	119	42	represented	represent	VBN
19395	119	43	by	by	IN
19395	119	44	the	the	DT
19395	119	45	concave	concave	NNP
19395	119	46	surface	surface	NN
19395	119	47	of	of	IN
19395	119	48	a	a	DT
19395	119	49	sphere	sphere	NN
19395	119	50	in	in	IN
19395	119	51	the	the	DT
19395	119	52	centre	centre	NN
19395	119	53	of	of	IN
19395	119	54	which	which	WDT
19395	119	55	the	the	DT
19395	119	56	eye	eye	NN
19395	119	57	of	of	IN
19395	119	58	an	an	DT
19395	119	59	observer	observer	NN
19395	119	60	might	may	MD
19395	119	61	be	be	VB
19395	119	62	supposed	suppose	VBN
19395	119	63	to	to	TO
19395	119	64	be	be	VB
19395	119	65	placed	place	VBN
19395	119	66	....	....	.
19395	120	1	In	in	IN
19395	120	2	future	future	NN
19395	120	3	we	-PRON-	PRP
19395	120	4	shall	shall	MD
19395	120	5	look	look	VB
19395	120	6	upon	upon	IN
19395	120	7	those	those	DT
19395	120	8	regions	region	NNS
19395	120	9	into	into	IN
19395	120	10	which	which	WDT
19395	120	11	we	-PRON-	PRP
19395	120	12	may	may	MD
19395	120	13	now	now	RB
19395	120	14	penetrate	penetrate	VB
19395	120	15	by	by	IN
19395	120	16	means	mean	NNS
19395	120	17	of	of	IN
19395	120	18	such	such	JJ
19395	120	19	large	large	JJ
19395	120	20	telescopes	telescope	NNS
19395	120	21	,	,	,
19395	120	22	as	as	IN
19395	120	23	a	a	DT
19395	120	24	naturalist	naturalist	NN
19395	120	25	regards	regard	VBZ
19395	120	26	a	a	DT
19395	120	27	rich	rich	JJ
19395	120	28	extent	extent	NN
19395	120	29	of	of	IN
19395	120	30	ground	ground	NN
19395	120	31	or	or	CC
19395	120	32	chain	chain	NN
19395	120	33	of	of	IN
19395	120	34	mountains	mountain	NNS
19395	120	35	containing	contain	VBG
19395	120	36	strata	strata	NN
19395	120	37	variously	variously	RB
19395	120	38	inclined	incline	VBN
19395	120	39	and	and	CC
19395	120	40	directed	direct	VBD
19395	120	41	as	as	RB
19395	120	42	well	well	RB
19395	120	43	as	as	IN
19395	120	44	consisting	consist	VBG
19395	120	45	of	of	IN
19395	120	46	very	very	RB
19395	120	47	different	different	JJ
19395	120	48	materials	material	NNS
19395	120	49	.	.	.
19395	120	50	"	"	''
19395	121	1	On	on	IN
19395	121	2	turning	turn	VBG
19395	121	3	his	-PRON-	PRP$
19395	121	4	18-inch	18-inch	CD
19395	121	5	reflecting	reflect	VBG
19395	121	6	telescope	telescope	NN
19395	121	7	to	to	IN
19395	121	8	a	a	DT
19395	121	9	part	part	NN
19395	121	10	of	of	IN
19395	121	11	the	the	DT
19395	121	12	Milky	Milky	NNP
19395	121	13	Way	Way	NNP
19395	121	14	in	in	IN
19395	121	15	Orion	Orion	NNP
19395	121	16	,	,	,
19395	121	17	he	-PRON-	PRP
19395	121	18	found	find	VBD
19395	121	19	its	-PRON-	PRP$
19395	121	20	whitish	whitish	JJ
19395	121	21	appearance	appearance	NN
19395	121	22	to	to	TO
19395	121	23	be	be	VB
19395	121	24	completely	completely	RB
19395	121	25	resolved	resolve	VBN
19395	121	26	into	into	IN
19395	121	27	small	small	JJ
19395	121	28	stars	star	NNS
19395	121	29	,	,	,
19395	121	30	not	not	RB
19395	121	31	separately	separately	RB
19395	121	32	seen	see	VBN
19395	121	33	with	with	IN
19395	121	34	his	-PRON-	PRP$
19395	121	35	former	former	JJ
19395	121	36	telescopes	telescope	NNS
19395	121	37	.	.	.
19395	122	1	"	"	``
19395	122	2	The	the	DT
19395	122	3	glorious	glorious	JJ
19395	122	4	multitude	multitude	NN
19395	122	5	of	of	IN
19395	122	6	stars	star	NNS
19395	122	7	of	of	IN
19395	122	8	all	all	DT
19395	122	9	possible	possible	JJ
19395	122	10	sizes	size	NNS
19395	122	11	that	that	WDT
19395	122	12	presented	present	VBD
19395	122	13	themselves	-PRON-	PRP
19395	122	14	here	here	RB
19395	122	15	to	to	IN
19395	122	16	my	-PRON-	PRP$
19395	122	17	view	view	NN
19395	122	18	are	be	VBP
19395	122	19	truly	truly	RB
19395	122	20	astonishing	astonishing	JJ
19395	122	21	;	;	:
19395	122	22	but	but	CC
19395	122	23	as	as	IN
19395	122	24	the	the	DT
19395	122	25	dazzling	dazzling	JJ
19395	122	26	brightness	brightness	NN
19395	122	27	of	of	IN
19395	122	28	glittering	glitter	VBG
19395	122	29	stars	star	NNS
19395	122	30	may	may	MD
19395	122	31	easily	easily	RB
19395	122	32	mislead	mislead	VB
19395	122	33	us	-PRON-	PRP
19395	122	34	so	so	RB
19395	122	35	far	far	RB
19395	122	36	as	as	IN
19395	122	37	to	to	TO
19395	122	38	estimate	estimate	VB
19395	122	39	their	-PRON-	PRP$
19395	122	40	number	number	NN
19395	122	41	greater	great	JJR
19395	122	42	than	than	IN
19395	122	43	it	-PRON-	PRP
19395	122	44	really	really	RB
19395	122	45	is	be	VBZ
19395	122	46	,	,	,
19395	122	47	I	-PRON-	PRP
19395	122	48	endeavored	endeavor	VBD
19395	122	49	to	to	TO
19395	122	50	ascertain	ascertain	VB
19395	122	51	this	this	DT
19395	122	52	point	point	NN
19395	122	53	by	by	IN
19395	122	54	counting	count	VBG
19395	122	55	many	many	JJ
19395	122	56	fields	field	NNS
19395	122	57	,	,	,
19395	122	58	and	and	CC
19395	122	59	computing	compute	VBG
19395	122	60	from	from	IN
19395	122	61	a	a	DT
19395	122	62	mean	mean	NN
19395	122	63	of	of	IN
19395	122	64	them	-PRON-	PRP
19395	122	65	,	,	,
19395	122	66	what	what	WDT
19395	122	67	a	a	DT
19395	122	68	certain	certain	JJ
19395	122	69	given	give	VBN
19395	122	70	portion	portion	NN
19395	122	71	of	of	IN
19395	122	72	the	the	DT
19395	122	73	Milky	Milky	NNP
19395	122	74	Way	Way	NNP
19395	122	75	might	may	MD
19395	122	76	contain	contain	VB
19395	122	77	.	.	.
19395	122	78	"	"	''
19395	123	1	By	by	IN
19395	123	2	this	this	DT
19395	123	3	means	mean	VBZ
19395	123	4	,	,	,
19395	123	5	applied	apply	VBD
19395	123	6	not	not	RB
19395	123	7	only	only	RB
19395	123	8	to	to	IN
19395	123	9	the	the	DT
19395	123	10	Milky	Milky	NNP
19395	123	11	Way	Way	NNP
19395	123	12	but	but	CC
19395	123	13	to	to	IN
19395	123	14	all	all	DT
19395	123	15	parts	part	NNS
19395	123	16	of	of	IN
19395	123	17	the	the	DT
19395	123	18	heavens	heavens	NNPS
19395	123	19	,	,	,
19395	123	20	Herschel	Herschel	NNP
19395	123	21	determined	determine	VBD
19395	123	22	the	the	DT
19395	123	23	approximate	approximate	JJ
19395	123	24	number	number	NN
19395	123	25	and	and	CC
19395	123	26	distribution	distribution	NN
19395	123	27	of	of	IN
19395	123	28	all	all	PDT
19395	123	29	the	the	DT
19395	123	30	stars	star	NNS
19395	123	31	within	within	IN
19395	123	32	reach	reach	NN
19395	123	33	of	of	IN
19395	123	34	his	-PRON-	PRP$
19395	123	35	instrument	instrument	NN
19395	123	36	.	.	.
19395	124	1	By	by	IN
19395	124	2	comparing	compare	VBG
19395	124	3	many	many	JJ
19395	124	4	hundred	hundred	CD
19395	124	5	gauges	gauge	NNS
19395	124	6	or	or	CC
19395	124	7	counts	count	NNS
19395	124	8	of	of	IN
19395	124	9	stars	star	NNS
19395	124	10	visible	visible	JJ
19395	124	11	in	in	IN
19395	124	12	a	a	DT
19395	124	13	field	field	NN
19395	124	14	of	of	IN
19395	124	15	about	about	RB
19395	124	16	one	one	CD
19395	124	17	-	-	HYPH
19395	124	18	quarter	quarter	NN
19395	124	19	of	of	IN
19395	124	20	the	the	DT
19395	124	21	area	area	NN
19395	124	22	of	of	IN
19395	124	23	the	the	DT
19395	124	24	moon	moon	NN
19395	124	25	,	,	,
19395	124	26	Herschel	Herschel	NNP
19395	124	27	found	find	VBD
19395	124	28	that	that	IN
19395	124	29	the	the	DT
19395	124	30	average	average	JJ
19395	124	31	number	number	NN
19395	124	32	of	of	IN
19395	124	33	stars	star	NNS
19395	124	34	increased	increase	VBN
19395	124	35	toward	toward	IN
19395	124	36	the	the	DT
19395	124	37	great	great	JJ
19395	124	38	circle	circle	NN
19395	124	39	which	which	WDT
19395	124	40	most	most	RBS
19395	124	41	nearly	nearly	RB
19395	124	42	conforms	conform	VBZ
19395	124	43	with	with	IN
19395	124	44	the	the	DT
19395	124	45	course	course	NN
19395	124	46	of	of	IN
19395	124	47	the	the	DT
19395	124	48	Milky	Milky	NNP
19395	124	49	Way	Way	NNP
19395	124	50	.	.	.
19395	125	1	Ninety	ninety	CD
19395	125	2	degrees	degree	NNS
19395	125	3	from	from	IN
19395	125	4	this	this	DT
19395	125	5	plane	plane	NN
19395	125	6	,	,	,
19395	125	7	at	at	IN
19395	125	8	the	the	DT
19395	125	9	pole	pole	NN
19395	125	10	of	of	IN
19395	125	11	the	the	DT
19395	125	12	Milky	Milky	NNP
19395	125	13	Way	Way	NNP
19395	125	14	,	,	,
19395	125	15	only	only	RB
19395	125	16	four	four	CD
19395	125	17	stars	star	NNS
19395	125	18	,	,	,
19395	125	19	on	on	IN
19395	125	20	the	the	DT
19395	125	21	average	average	NN
19395	125	22	,	,	,
19395	125	23	were	be	VBD
19395	125	24	seen	see	VBN
19395	125	25	in	in	IN
19395	125	26	the	the	DT
19395	125	27	field	field	NN
19395	125	28	of	of	IN
19395	125	29	the	the	DT
19395	125	30	telescope	telescope	NN
19395	125	31	.	.	.
19395	126	1	In	in	IN
19395	126	2	approaching	approach	VBG
19395	126	3	the	the	DT
19395	126	4	Milky	Milky	NNP
19395	126	5	Way	Way	NNP
19395	126	6	this	this	DT
19395	126	7	number	number	NN
19395	126	8	increased	increase	VBD
19395	126	9	slowly	slowly	RB
19395	126	10	at	at	IN
19395	126	11	first	first	RB
19395	126	12	,	,	,
19395	126	13	and	and	CC
19395	126	14	then	then	RB
19395	126	15	more	more	RBR
19395	126	16	and	and	CC
19395	126	17	more	more	RBR
19395	126	18	rapidly	rapidly	RB
19395	126	19	,	,	,
19395	126	20	until	until	IN
19395	126	21	it	-PRON-	PRP
19395	126	22	rose	rise	VBD
19395	126	23	to	to	IN
19395	126	24	an	an	DT
19395	126	25	average	average	NN
19395	126	26	of	of	IN
19395	126	27	122	122	CD
19395	126	28	stars	star	NNS
19395	126	29	per	per	IN
19395	126	30	field	field	NN
19395	126	31	.	.	.
19395	127	1	[	[	-LRB-
19395	127	2	Illustration	illustration	NN
19395	127	3	:	:	:
19395	127	4	Fig	Fig	NNP
19395	127	5	.	.	.
19395	128	1	5	5	CD
19395	128	2	.	.	.
19395	129	1	Erecting	erect	VBG
19395	129	2	the	the	DT
19395	129	3	polar	polar	JJ
19395	129	4	axis	axis	NN
19395	129	5	of	of	IN
19395	129	6	the	the	DT
19395	129	7	100-inch	100-inch	CD
19395	129	8	telescope	telescope	NN
19395	129	9	.	.	.
19395	129	10	]	]	-RRB-
19395	130	1	These	these	DT
19395	130	2	observations	observation	NNS
19395	130	3	were	be	VBD
19395	130	4	made	make	VBN
19395	130	5	in	in	IN
19395	130	6	the	the	DT
19395	130	7	northern	northern	JJ
19395	130	8	hemisphere	hemisphere	NN
19395	130	9	,	,	,
19395	130	10	and	and	CC
19395	130	11	subsequently	subsequently	RB
19395	130	12	Sir	Sir	NNP
19395	130	13	John	John	NNP
19395	130	14	Herschel	Herschel	NNP
19395	130	15	,	,	,
19395	130	16	using	use	VBG
19395	130	17	his	-PRON-	PRP$
19395	130	18	father	father	NN
19395	130	19	's	's	POS
19395	130	20	telescope	telescope	NN
19395	130	21	at	at	IN
19395	130	22	the	the	DT
19395	130	23	Cape	Cape	NNP
19395	130	24	of	of	IN
19395	130	25	Good	Good	NNP
19395	130	26	Hope	Hope	NNP
19395	130	27	,	,	,
19395	130	28	found	find	VBD
19395	130	29	an	an	DT
19395	130	30	almost	almost	RB
19395	130	31	exactly	exactly	RB
19395	130	32	similar	similar	JJ
19395	130	33	increase	increase	NN
19395	130	34	of	of	IN
19395	130	35	apparent	apparent	JJ
19395	130	36	star	star	NN
19395	130	37	density	density	NN
19395	130	38	for	for	IN
19395	130	39	the	the	DT
19395	130	40	southern	southern	JJ
19395	130	41	hemisphere	hemisphere	NN
19395	130	42	.	.	.
19395	131	1	According	accord	VBG
19395	131	2	to	to	IN
19395	131	3	his	-PRON-	PRP$
19395	131	4	estimates	estimate	NNS
19395	131	5	,	,	,
19395	131	6	the	the	DT
19395	131	7	total	total	JJ
19395	131	8	number	number	NN
19395	131	9	of	of	IN
19395	131	10	stars	star	NNS
19395	131	11	in	in	IN
19395	131	12	both	both	DT
19395	131	13	hemispheres	hemisphere	NNS
19395	131	14	that	that	WDT
19395	131	15	could	could	MD
19395	131	16	be	be	VB
19395	131	17	seen	see	VBN
19395	131	18	distinctly	distinctly	RB
19395	131	19	enough	enough	JJ
19395	131	20	to	to	TO
19395	131	21	be	be	VB
19395	131	22	counted	count	VBN
19395	131	23	in	in	IN
19395	131	24	this	this	DT
19395	131	25	telescope	telescope	NN
19395	131	26	would	would	MD
19395	131	27	probably	probably	RB
19395	131	28	be	be	VB
19395	131	29	about	about	RB
19395	131	30	five	five	CD
19395	131	31	and	and	CC
19395	131	32	one	one	CD
19395	131	33	-	-	HYPH
19395	131	34	half	half	NN
19395	131	35	millions	million	NNS
19395	131	36	.	.	.
19395	132	1	The	the	DT
19395	132	2	Herschels	Herschels	NNPS
19395	132	3	concluded	conclude	VBD
19395	132	4	that	that	IN
19395	132	5	"	"	``
19395	132	6	the	the	DT
19395	132	7	stars	star	NNS
19395	132	8	of	of	IN
19395	132	9	our	-PRON-	PRP$
19395	132	10	firmament	firmament	NN
19395	132	11	,	,	,
19395	132	12	instead	instead	RB
19395	132	13	of	of	IN
19395	132	14	being	be	VBG
19395	132	15	scattered	scatter	VBN
19395	132	16	in	in	IN
19395	132	17	all	all	DT
19395	132	18	directions	direction	NNS
19395	132	19	indifferently	indifferently	RB
19395	132	20	through	through	IN
19395	132	21	space	space	NN
19395	132	22	,	,	,
19395	132	23	form	form	VB
19395	132	24	a	a	DT
19395	132	25	stratum	stratum	NN
19395	132	26	of	of	IN
19395	132	27	which	which	WDT
19395	132	28	the	the	DT
19395	132	29	thickness	thickness	NN
19395	132	30	is	be	VBZ
19395	132	31	small	small	JJ
19395	132	32	,	,	,
19395	132	33	in	in	IN
19395	132	34	comparison	comparison	NN
19395	132	35	with	with	IN
19395	132	36	its	-PRON-	PRP$
19395	132	37	length	length	NN
19395	132	38	and	and	CC
19395	132	39	breadth	breadth	NN
19395	132	40	;	;	,
19395	132	41	and	and	CC
19395	132	42	in	in	IN
19395	132	43	which	which	WDT
19395	132	44	the	the	DT
19395	132	45	earth	earth	NN
19395	132	46	occupies	occupy	VBZ
19395	132	47	a	a	DT
19395	132	48	place	place	NN
19395	132	49	somewhere	somewhere	RB
19395	132	50	about	about	IN
19395	132	51	the	the	DT
19395	132	52	middle	middle	NN
19395	132	53	of	of	IN
19395	132	54	its	-PRON-	PRP$
19395	132	55	thickness	thickness	NN
19395	132	56	,	,	,
19395	132	57	between	between	IN
19395	132	58	the	the	DT
19395	132	59	point	point	NN
19395	132	60	where	where	WRB
19395	132	61	it	-PRON-	PRP
19395	132	62	subdivides	subdivide	VBZ
19395	132	63	into	into	IN
19395	132	64	two	two	CD
19395	132	65	principal	principal	JJ
19395	132	66	laminæ	laminæ	NN
19395	132	67	inclined	incline	VBN
19395	132	68	at	at	IN
19395	132	69	a	a	DT
19395	132	70	small	small	JJ
19395	132	71	angle	angle	NN
19395	132	72	to	to	IN
19395	132	73	each	each	DT
19395	132	74	other	other	JJ
19395	132	75	.	.	.
19395	132	76	"	"	''
19395	133	1	This	this	DT
19395	133	2	view	view	NN
19395	133	3	does	do	VBZ
19395	133	4	not	not	RB
19395	133	5	differ	differ	VB
19395	133	6	essentially	essentially	RB
19395	133	7	from	from	IN
19395	133	8	our	-PRON-	PRP$
19395	133	9	modern	modern	JJ
19395	133	10	conception	conception	NN
19395	133	11	of	of	IN
19395	133	12	the	the	DT
19395	133	13	form	form	NN
19395	133	14	of	of	IN
19395	133	15	the	the	DT
19395	133	16	Galaxy	Galaxy	NNP
19395	133	17	;	;	:
19395	133	18	but	but	CC
19395	133	19	as	as	IN
19395	133	20	the	the	DT
19395	133	21	Herschels	Herschels	NNPS
19395	133	22	were	be	VBD
19395	133	23	unable	unable	JJ
19395	133	24	to	to	TO
19395	133	25	see	see	VB
19395	133	26	stars	star	NNS
19395	133	27	fainter	fainter	NN
19395	133	28	than	than	IN
19395	133	29	the	the	DT
19395	133	30	fifteenth	fifteenth	JJ
19395	133	31	magnitude	magnitude	NN
19395	133	32	,	,	,
19395	133	33	it	-PRON-	PRP
19395	133	34	is	be	VBZ
19395	133	35	evident	evident	JJ
19395	133	36	that	that	IN
19395	133	37	their	-PRON-	PRP$
19395	133	38	conclusions	conclusion	NNS
19395	133	39	apply	apply	VBP
19395	133	40	only	only	RB
19395	133	41	to	to	IN
19395	133	42	a	a	DT
19395	133	43	restricted	restricted	JJ
19395	133	44	region	region	NN
19395	133	45	surrounding	surround	VBG
19395	133	46	the	the	DT
19395	133	47	solar	solar	JJ
19395	133	48	system	system	NN
19395	133	49	,	,	,
19395	133	50	in	in	IN
19395	133	51	the	the	DT
19395	133	52	midst	midst	NN
19395	133	53	of	of	IN
19395	133	54	the	the	DT
19395	133	55	enormously	enormously	RB
19395	133	56	extended	extended	JJ
19395	133	57	sidereal	sidereal	JJ
19395	133	58	universe	universe	NN
19395	133	59	which	which	WDT
19395	133	60	modern	modern	JJ
19395	133	61	instruments	instrument	NNS
19395	133	62	have	have	VBP
19395	133	63	brought	bring	VBN
19395	133	64	within	within	IN
19395	133	65	our	-PRON-	PRP$
19395	133	66	range	range	NN
19395	133	67	.	.	.
19395	134	1	MODERN	MODERN	NNS
19395	134	2	METHODS	methods	JJ
19395	134	3	The	the	DT
19395	134	4	remarkable	remarkable	JJ
19395	134	5	progress	progress	NN
19395	134	6	of	of	IN
19395	134	7	modern	modern	JJ
19395	134	8	astronomy	astronomy	NN
19395	134	9	is	be	VBZ
19395	134	10	mainly	mainly	RB
19395	134	11	due	due	JJ
19395	134	12	to	to	IN
19395	134	13	two	two	CD
19395	134	14	great	great	JJ
19395	134	15	instrumental	instrumental	JJ
19395	134	16	advances	advance	NNS
19395	134	17	:	:	:
19395	134	18	the	the	DT
19395	134	19	rise	rise	NN
19395	134	20	and	and	CC
19395	134	21	development	development	NN
19395	134	22	of	of	IN
19395	134	23	the	the	DT
19395	134	24	photographic	photographic	JJ
19395	134	25	telescope	telescope	NN
19395	134	26	,	,	,
19395	134	27	and	and	CC
19395	134	28	the	the	DT
19395	134	29	application	application	NN
19395	134	30	of	of	IN
19395	134	31	the	the	DT
19395	134	32	spectroscope	spectroscope	NN
19395	134	33	to	to	IN
19395	134	34	the	the	DT
19395	134	35	study	study	NN
19395	134	36	of	of	IN
19395	134	37	celestial	celestial	JJ
19395	134	38	objects	object	NNS
19395	134	39	.	.	.
19395	135	1	These	these	DT
19395	135	2	new	new	JJ
19395	135	3	and	and	CC
19395	135	4	powerful	powerful	JJ
19395	135	5	instruments	instrument	NNS
19395	135	6	,	,	,
19395	135	7	supplemented	supplement	VBN
19395	135	8	by	by	IN
19395	135	9	many	many	JJ
19395	135	10	accessories	accessory	NNS
19395	135	11	which	which	WDT
19395	135	12	have	have	VBP
19395	135	13	completely	completely	RB
19395	135	14	revolutionized	revolutionize	VBN
19395	135	15	observatory	observatory	JJ
19395	135	16	equipment	equipment	NN
19395	135	17	,	,	,
19395	135	18	have	have	VBP
19395	135	19	not	not	RB
19395	135	20	only	only	RB
19395	135	21	revealed	reveal	VBN
19395	135	22	a	a	DT
19395	135	23	vastly	vastly	RB
19395	135	24	greater	great	JJR
19395	135	25	number	number	NN
19395	135	26	of	of	IN
19395	135	27	stars	star	NNS
19395	135	28	and	and	CC
19395	135	29	nebulæ	nebulæ	NN
19395	135	30	:	:	:
19395	135	31	they	-PRON-	PRP
19395	135	32	have	have	VBP
19395	135	33	also	also	RB
19395	135	34	rendered	render	VBN
19395	135	35	feasible	feasible	JJ
19395	135	36	observations	observation	NNS
19395	135	37	of	of	IN
19395	135	38	a	a	DT
19395	135	39	type	type	NN
19395	135	40	formerly	formerly	RB
19395	135	41	regarded	regard	VBN
19395	135	42	as	as	IN
19395	135	43	impossible	impossible	JJ
19395	135	44	.	.	.
19395	136	1	The	the	DT
19395	136	2	chemical	chemical	NN
19395	136	3	analysis	analysis	NN
19395	136	4	of	of	IN
19395	136	5	a	a	DT
19395	136	6	faint	faint	JJ
19395	136	7	star	star	NN
19395	136	8	is	be	VBZ
19395	136	9	now	now	RB
19395	136	10	so	so	RB
19395	136	11	easy	easy	JJ
19395	136	12	that	that	IN
19395	136	13	it	-PRON-	PRP
19395	136	14	can	can	MD
19395	136	15	be	be	VB
19395	136	16	accomplished	accomplish	VBN
19395	136	17	in	in	IN
19395	136	18	a	a	DT
19395	136	19	very	very	RB
19395	136	20	short	short	JJ
19395	136	21	time	time	NN
19395	136	22	--	--	:
19395	136	23	as	as	RB
19395	136	24	quickly	quickly	RB
19395	136	25	,	,	,
19395	136	26	in	in	IN
19395	136	27	fact	fact	NN
19395	136	28	,	,	,
19395	136	29	as	as	IN
19395	136	30	an	an	DT
19395	136	31	equally	equally	RB
19395	136	32	complex	complex	JJ
19395	136	33	substance	substance	NN
19395	136	34	can	can	MD
19395	136	35	be	be	VB
19395	136	36	analyzed	analyze	VBN
19395	136	37	in	in	IN
19395	136	38	the	the	DT
19395	136	39	laboratory	laboratory	NN
19395	136	40	.	.	.
19395	137	1	The	the	DT
19395	137	2	spectroscope	spectroscope	NN
19395	137	3	also	also	RB
19395	137	4	measures	measure	VBZ
19395	137	5	a	a	DT
19395	137	6	star	star	NN
19395	137	7	's	's	POS
19395	137	8	velocity	velocity	NN
19395	137	9	,	,	,
19395	137	10	the	the	DT
19395	137	11	pressure	pressure	NN
19395	137	12	at	at	IN
19395	137	13	different	different	JJ
19395	137	14	levels	level	NNS
19395	137	15	in	in	IN
19395	137	16	its	-PRON-	PRP$
19395	137	17	atmosphere	atmosphere	NN
19395	137	18	,	,	,
19395	137	19	its	-PRON-	PRP$
19395	137	20	approximate	approximate	JJ
19395	137	21	temperature	temperature	NN
19395	137	22	,	,	,
19395	137	23	and	and	CC
19395	137	24	now	now	RB
19395	137	25	,	,	,
19395	137	26	by	by	IN
19395	137	27	a	a	DT
19395	137	28	new	new	JJ
19395	137	29	and	and	CC
19395	137	30	ingenious	ingenious	JJ
19395	137	31	method	method	NN
19395	137	32	,	,	,
19395	137	33	its	-PRON-	PRP$
19395	137	34	distance	distance	NN
19395	137	35	from	from	IN
19395	137	36	the	the	DT
19395	137	37	earth	earth	NN
19395	137	38	.	.	.
19395	138	1	It	-PRON-	PRP
19395	138	2	determines	determine	VBZ
19395	138	3	the	the	DT
19395	138	4	velocity	velocity	NN
19395	138	5	of	of	IN
19395	138	6	rotation	rotation	NN
19395	138	7	of	of	IN
19395	138	8	the	the	DT
19395	138	9	sun	sun	NN
19395	138	10	and	and	CC
19395	138	11	of	of	IN
19395	138	12	nebulæ	nebulæ	NN
19395	138	13	,	,	,
19395	138	14	the	the	DT
19395	138	15	existence	existence	NN
19395	138	16	and	and	CC
19395	138	17	periods	period	NNS
19395	138	18	of	of	IN
19395	138	19	orbital	orbital	JJ
19395	138	20	revolution	revolution	NN
19395	138	21	of	of	IN
19395	138	22	binary	binary	JJ
19395	138	23	stars	star	NNS
19395	138	24	too	too	RB
19395	138	25	close	close	JJ
19395	138	26	to	to	TO
19395	138	27	be	be	VB
19395	138	28	separated	separate	VBN
19395	138	29	by	by	IN
19395	138	30	any	any	DT
19395	138	31	telescope	telescope	NN
19395	138	32	,	,	,
19395	138	33	the	the	DT
19395	138	34	presence	presence	NN
19395	138	35	of	of	IN
19395	138	36	magnetic	magnetic	JJ
19395	138	37	fields	field	NNS
19395	138	38	in	in	IN
19395	138	39	sunspots	sunspot	NNS
19395	138	40	,	,	,
19395	138	41	and	and	CC
19395	138	42	the	the	DT
19395	138	43	fact	fact	NN
19395	138	44	that	that	IN
19395	138	45	the	the	DT
19395	138	46	entire	entire	JJ
19395	138	47	sun	sun	NN
19395	138	48	,	,	,
19395	138	49	like	like	IN
19395	138	50	the	the	DT
19395	138	51	earth	earth	NN
19395	138	52	,	,	,
19395	138	53	is	be	VBZ
19395	138	54	a	a	DT
19395	138	55	magnet	magnet	NN
19395	138	56	.	.	.
19395	139	1	[	[	-LRB-
19395	139	2	Illustration	illustration	NN
19395	139	3	:	:	:
19395	139	4	Fig	Fig	NNP
19395	139	5	.	.	.
19395	140	1	6	6	CD
19395	140	2	.	.	.
19395	141	1	Lowest	low	JJS
19395	141	2	section	section	NN
19395	141	3	of	of	IN
19395	141	4	tube	tube	NN
19395	141	5	of	of	IN
19395	141	6	100-inch	100-inch	CD
19395	141	7	telescope	telescope	NN
19395	141	8	,	,	,
19395	141	9	ready	ready	JJ
19395	141	10	to	to	TO
19395	141	11	leave	leave	VB
19395	141	12	Pasadena	Pasadena	NNP
19395	141	13	for	for	IN
19395	141	14	Mount	Mount	NNP
19395	141	15	Wilson	Wilson	NNP
19395	141	16	.	.	.
19395	141	17	]	]	-RRB-
19395	142	1	Such	such	JJ
19395	142	2	new	new	JJ
19395	142	3	possibilities	possibility	NNS
19395	142	4	,	,	,
19395	142	5	with	with	IN
19395	142	6	many	many	JJ
19395	142	7	others	other	NNS
19395	142	8	resulting	result	VBG
19395	142	9	from	from	IN
19395	142	10	the	the	DT
19395	142	11	application	application	NN
19395	142	12	of	of	IN
19395	142	13	physical	physical	JJ
19395	142	14	methods	method	NNS
19395	142	15	of	of	IN
19395	142	16	the	the	DT
19395	142	17	most	most	RBS
19395	142	18	diverse	diverse	JJ
19395	142	19	character	character	NN
19395	142	20	,	,	,
19395	142	21	have	have	VBP
19395	142	22	greatly	greatly	RB
19395	142	23	enlarged	enlarge	VBN
19395	142	24	the	the	DT
19395	142	25	astronomer	astronomer	NN
19395	142	26	's	's	POS
19395	142	27	outlook	outlook	NN
19395	142	28	.	.	.
19395	143	1	He	-PRON-	PRP
19395	143	2	may	may	MD
19395	143	3	now	now	RB
19395	143	4	attack	attack	VB
19395	143	5	two	two	CD
19395	143	6	great	great	JJ
19395	143	7	problems	problem	NNS
19395	143	8	:	:	:
19395	143	9	(	(	-LRB-
19395	143	10	1	1	LS
19395	143	11	)	)	-RRB-
19395	143	12	The	the	DT
19395	143	13	structure	structure	NN
19395	143	14	of	of	IN
19395	143	15	the	the	DT
19395	143	16	universe	universe	NN
19395	143	17	and	and	CC
19395	143	18	the	the	DT
19395	143	19	motions	motion	NNS
19395	143	20	of	of	IN
19395	143	21	its	-PRON-	PRP$
19395	143	22	constituent	constituent	NN
19395	143	23	bodies	body	NNS
19395	143	24	,	,	,
19395	143	25	and	and	CC
19395	143	26	(	(	-LRB-
19395	143	27	2	2	LS
19395	143	28	)	)	-RRB-
19395	143	29	the	the	DT
19395	143	30	evolution	evolution	NN
19395	143	31	of	of	IN
19395	143	32	the	the	DT
19395	143	33	stars	star	NNS
19395	143	34	:	:	:
19395	143	35	their	-PRON-	PRP$
19395	143	36	nature	nature	NN
19395	143	37	,	,	,
19395	143	38	origin	origin	NN
19395	143	39	,	,	,
19395	143	40	growth	growth	NN
19395	143	41	,	,	,
19395	143	42	and	and	CC
19395	143	43	decline	decline	NN
19395	143	44	.	.	.
19395	144	1	These	these	DT
19395	144	2	two	two	CD
19395	144	3	problems	problem	NNS
19395	144	4	are	be	VBP
19395	144	5	intimately	intimately	RB
19395	144	6	related	relate	VBN
19395	144	7	and	and	CC
19395	144	8	must	must	MD
19395	144	9	be	be	VB
19395	144	10	studied	study	VBN
19395	144	11	as	as	IN
19395	144	12	one	one	CD
19395	144	13	.	.	.
19395	145	1	[	[	-LRB-
19395	145	2	*	*	NFP
19395	145	3	]	]	-RRB-
19395	145	4	[	[	-LRB-
19395	145	5	Footnote	footnote	NN
19395	145	6	*	*	NFP
19395	145	7	:	:	:
19395	145	8	A	a	DT
19395	145	9	third	third	JJ
19395	145	10	great	great	JJ
19395	145	11	problem	problem	NN
19395	145	12	open	open	JJ
19395	145	13	to	to	IN
19395	145	14	the	the	DT
19395	145	15	astronomer	astronomer	NN
19395	145	16	,	,	,
19395	145	17	the	the	DT
19395	145	18	study	study	NN
19395	145	19	of	of	IN
19395	145	20	the	the	DT
19395	145	21	constitution	constitution	NN
19395	145	22	of	of	IN
19395	145	23	matter	matter	NN
19395	145	24	,	,	,
19395	145	25	is	be	VBZ
19395	145	26	described	describe	VBN
19395	145	27	in	in	IN
19395	145	28	Chapter	Chapter	NNP
19395	145	29	III	III	NNP
19395	145	30	.	.	.
19395	145	31	]	]	-RRB-
19395	146	1	If	if	IN
19395	146	2	space	space	NN
19395	146	3	permitted	permit	VBD
19395	146	4	,	,	,
19395	146	5	it	-PRON-	PRP
19395	146	6	would	would	MD
19395	146	7	be	be	VB
19395	146	8	interesting	interesting	JJ
19395	146	9	to	to	TO
19395	146	10	survey	survey	VB
19395	146	11	the	the	DT
19395	146	12	progress	progress	NN
19395	146	13	already	already	RB
19395	146	14	accomplished	accomplish	VBN
19395	146	15	by	by	IN
19395	146	16	modern	modern	JJ
19395	146	17	methods	method	NNS
19395	146	18	of	of	IN
19395	146	19	astronomical	astronomical	JJ
19395	146	20	research	research	NN
19395	146	21	.	.	.
19395	147	1	Hundreds	hundred	NNS
19395	147	2	of	of	IN
19395	147	3	millions	million	NNS
19395	147	4	of	of	IN
19395	147	5	stars	star	NNS
19395	147	6	have	have	VBP
19395	147	7	been	be	VBN
19395	147	8	photographed	photograph	VBN
19395	147	9	,	,	,
19395	147	10	and	and	CC
19395	147	11	the	the	DT
19395	147	12	boundaries	boundary	NNS
19395	147	13	of	of	IN
19395	147	14	the	the	DT
19395	147	15	stellar	stellar	JJ
19395	147	16	universe	universe	NN
19395	147	17	have	have	VBP
19395	147	18	been	be	VBN
19395	147	19	pushed	push	VBN
19395	147	20	far	far	RB
19395	147	21	into	into	IN
19395	147	22	space	space	NN
19395	147	23	,	,	,
19395	147	24	but	but	CC
19395	147	25	have	have	VBP
19395	147	26	not	not	RB
19395	147	27	been	be	VBN
19395	147	28	attained	attain	VBN
19395	147	29	.	.	.
19395	148	1	Globular	globular	JJ
19395	148	2	star	star	NN
19395	148	3	clusters	cluster	NNS
19395	148	4	,	,	,
19395	148	5	containing	contain	VBG
19395	148	6	tens	ten	NNS
19395	148	7	of	of	IN
19395	148	8	thousands	thousand	NNS
19395	148	9	of	of	IN
19395	148	10	stars	star	NNS
19395	148	11	,	,	,
19395	148	12	are	be	VBP
19395	148	13	on	on	IN
19395	148	14	so	so	RB
19395	148	15	great	great	JJ
19395	148	16	a	a	DT
19395	148	17	scale	scale	NN
19395	148	18	(	(	-LRB-
19395	148	19	according	accord	VBG
19395	148	20	to	to	IN
19395	148	21	Shapley	Shapley	NNP
19395	148	22	)	)	-RRB-
19395	148	23	that	that	DT
19395	148	24	light	light	NN
19395	148	25	,	,	,
19395	148	26	travelling	travel	VBG
19395	148	27	at	at	IN
19395	148	28	the	the	DT
19395	148	29	rate	rate	NN
19395	148	30	of	of	IN
19395	148	31	186,000	186,000	CD
19395	148	32	miles	mile	NNS
19395	148	33	per	per	IN
19395	148	34	second	second	NN
19395	148	35	,	,	,
19395	148	36	may	may	MD
19395	148	37	take	take	VB
19395	148	38	500	500	CD
19395	148	39	years	year	NNS
19395	148	40	to	to	TO
19395	148	41	cross	cross	VB
19395	148	42	one	one	CD
19395	148	43	of	of	IN
19395	148	44	them	-PRON-	PRP
19395	148	45	,	,	,
19395	148	46	while	while	IN
19395	148	47	the	the	DT
19395	148	48	most	most	RBS
19395	148	49	distant	distant	JJ
19395	148	50	of	of	IN
19395	148	51	these	these	DT
19395	148	52	objects	object	NNS
19395	148	53	may	may	MD
19395	148	54	be	be	VB
19395	148	55	more	more	JJR
19395	148	56	than	than	IN
19395	148	57	200,000	200,000	CD
19395	148	58	light	light	NN
19395	148	59	-	-	HYPH
19395	148	60	years	year	NNS
19395	148	61	from	from	IN
19395	148	62	the	the	DT
19395	148	63	earth	earth	NN
19395	148	64	.	.	.
19395	149	1	The	the	DT
19395	149	2	spiral	spiral	JJ
19395	149	3	nebulæ	nebulæ	NN
19395	149	4	,	,	,
19395	149	5	more	more	JJR
19395	149	6	than	than	IN
19395	149	7	a	a	DT
19395	149	8	million	million	CD
19395	149	9	in	in	IN
19395	149	10	number	number	NN
19395	149	11	,	,	,
19395	149	12	are	be	VBP
19395	149	13	vast	vast	JJ
19395	149	14	whirling	whirl	VBG
19395	149	15	masses	masse	NNS
19395	149	16	in	in	IN
19395	149	17	process	process	NN
19395	149	18	of	of	IN
19395	149	19	development	development	NN
19395	149	20	,	,	,
19395	149	21	but	but	CC
19395	149	22	we	-PRON-	PRP
19395	149	23	are	be	VBP
19395	149	24	not	not	RB
19395	149	25	yet	yet	RB
19395	149	26	certain	certain	JJ
19395	149	27	whether	whether	IN
19395	149	28	they	-PRON-	PRP
19395	149	29	should	should	MD
19395	149	30	be	be	VB
19395	149	31	regarded	regard	VBN
19395	149	32	as	as	IN
19395	149	33	"	"	``
19395	149	34	island	island	NN
19395	149	35	universes	universe	NNS
19395	149	36	"	"	''
19395	149	37	or	or	CC
19395	149	38	as	as	RB
19395	149	39	subordinate	subordinate	JJ
19395	149	40	to	to	IN
19395	149	41	the	the	DT
19395	149	42	stellar	stellar	JJ
19395	149	43	system	system	NN
19395	149	44	which	which	WDT
19395	149	45	includes	include	VBZ
19395	149	46	our	-PRON-	PRP$
19395	149	47	minute	minute	NN
19395	149	48	group	group	NN
19395	149	49	of	of	IN
19395	149	50	sun	sun	NNP
19395	149	51	and	and	CC
19395	149	52	planets	planet	NNS
19395	149	53	,	,	,
19395	149	54	the	the	DT
19395	149	55	great	great	JJ
19395	149	56	star	star	NN
19395	149	57	clouds	cloud	NNS
19395	149	58	of	of	IN
19395	149	59	the	the	DT
19395	149	60	Milky	Milky	NNP
19395	149	61	Way	Way	NNP
19395	149	62	,	,	,
19395	149	63	and	and	CC
19395	149	64	the	the	DT
19395	149	65	distant	distant	JJ
19395	149	66	globular	globular	JJ
19395	149	67	star	star	NN
19395	149	68	clusters	cluster	NNS
19395	149	69	.	.	.
19395	150	1	[	[	-LRB-
19395	150	2	Illustration	illustration	NN
19395	150	3	:	:	:
19395	150	4	Fig	Fig	NNP
19395	150	5	.	.	.
19395	151	1	7	7	LS
19395	151	2	.	.	.
19395	152	1	Section	section	NN
19395	152	2	of	of	IN
19395	152	3	a	a	DT
19395	152	4	steel	steel	NN
19395	152	5	girder	girder	NN
19395	152	6	for	for	IN
19395	152	7	dome	dome	NN
19395	152	8	covering	cover	VBG
19395	152	9	the	the	DT
19395	152	10	100-inch	100-inch	CD
19395	152	11	telescope	telescope	NN
19395	152	12	,	,	,
19395	152	13	on	on	IN
19395	152	14	its	-PRON-	PRP$
19395	152	15	way	way	NN
19395	152	16	up	up	IN
19395	152	17	Mount	Mount	NNP
19395	152	18	Wilson	Wilson	NNP
19395	152	19	.	.	.
19395	152	20	]	]	-RRB-
19395	153	1	These	these	DT
19395	153	2	few	few	JJ
19395	153	3	particulars	particular	NNS
19395	153	4	may	may	MD
19395	153	5	give	give	VB
19395	153	6	a	a	DT
19395	153	7	slight	slight	JJ
19395	153	8	conception	conception	NN
19395	153	9	of	of	IN
19395	153	10	the	the	DT
19395	153	11	scale	scale	NN
19395	153	12	of	of	IN
19395	153	13	the	the	DT
19395	153	14	known	know	VBN
19395	153	15	universe	universe	NN
19395	153	16	,	,	,
19395	153	17	but	but	CC
19395	153	18	a	a	DT
19395	153	19	word	word	NN
19395	153	20	must	must	MD
19395	153	21	be	be	VB
19395	153	22	added	add	VBN
19395	153	23	regarding	regard	VBG
19395	153	24	some	some	DT
19395	153	25	of	of	IN
19395	153	26	its	-PRON-	PRP$
19395	153	27	most	most	RBS
19395	153	28	striking	striking	JJ
19395	153	29	phenomena	phenomenon	NNS
19395	153	30	.	.	.
19395	154	1	The	the	DT
19395	154	2	great	great	JJ
19395	154	3	majority	majority	NN
19395	154	4	of	of	IN
19395	154	5	the	the	DT
19395	154	6	stars	star	NNS
19395	154	7	whose	whose	WP$
19395	154	8	motions	motion	NNS
19395	154	9	have	have	VBP
19395	154	10	been	be	VBN
19395	154	11	determined	determine	VBN
19395	154	12	belong	belong	RB
19395	154	13	to	to	IN
19395	154	14	one	one	CD
19395	154	15	or	or	CC
19395	154	16	the	the	DT
19395	154	17	other	other	JJ
19395	154	18	of	of	IN
19395	154	19	two	two	CD
19395	154	20	great	great	JJ
19395	154	21	star	star	NN
19395	154	22	streams	stream	NNS
19395	154	23	,	,	,
19395	154	24	but	but	CC
19395	154	25	the	the	DT
19395	154	26	part	part	NN
19395	154	27	played	play	VBN
19395	154	28	by	by	IN
19395	154	29	these	these	DT
19395	154	30	streams	stream	NNS
19395	154	31	in	in	IN
19395	154	32	the	the	DT
19395	154	33	sidereal	sidereal	JJ
19395	154	34	system	system	NN
19395	154	35	as	as	IN
19395	154	36	a	a	DT
19395	154	37	whole	whole	NN
19395	154	38	is	be	VBZ
19395	154	39	still	still	RB
19395	154	40	obscure	obscure	JJ
19395	154	41	.	.	.
19395	155	1	The	the	DT
19395	155	2	stars	star	NNS
19395	155	3	have	have	VBP
19395	155	4	been	be	VBN
19395	155	5	grouped	group	VBN
19395	155	6	in	in	IN
19395	155	7	classes	class	NNS
19395	155	8	,	,	,
19395	155	9	presumably	presumably	RB
19395	155	10	in	in	IN
19395	155	11	the	the	DT
19395	155	12	order	order	NN
19395	155	13	of	of	IN
19395	155	14	their	-PRON-	PRP$
19395	155	15	evolutional	evolutional	JJ
19395	155	16	development	development	NN
19395	155	17	,	,	,
19395	155	18	as	as	IN
19395	155	19	they	-PRON-	PRP
19395	155	20	pass	pass	VBP
19395	155	21	from	from	IN
19395	155	22	the	the	DT
19395	155	23	early	early	JJ
19395	155	24	state	state	NN
19395	155	25	of	of	IN
19395	155	26	gaseous	gaseous	JJ
19395	155	27	masses	masse	NNS
19395	155	28	,	,	,
19395	155	29	of	of	IN
19395	155	30	low	low	JJ
19395	155	31	density	density	NN
19395	155	32	,	,	,
19395	155	33	through	through	IN
19395	155	34	the	the	DT
19395	155	35	successive	successive	JJ
19395	155	36	stages	stage	NNS
19395	155	37	resulting	result	VBG
19395	155	38	from	from	IN
19395	155	39	loss	loss	NN
19395	155	40	of	of	IN
19395	155	41	heat	heat	NN
19395	155	42	by	by	IN
19395	155	43	radiation	radiation	NN
19395	155	44	and	and	CC
19395	155	45	increased	increase	VBN
19395	155	46	density	density	NN
19395	155	47	due	due	IN
19395	155	48	to	to	IN
19395	155	49	shrinkage	shrinkage	NN
19395	155	50	.	.	.
19395	156	1	Strangely	strangely	RB
19395	156	2	enough	enough	RB
19395	156	3	,	,	,
19395	156	4	their	-PRON-	PRP$
19395	156	5	velocities	velocity	NNS
19395	156	6	in	in	IN
19395	156	7	space	space	NN
19395	156	8	show	show	VBP
19395	156	9	a	a	DT
19395	156	10	corresponding	corresponding	JJ
19395	156	11	change	change	NN
19395	156	12	,	,	,
19395	156	13	increasing	increase	VBG
19395	156	14	as	as	IN
19395	156	15	they	-PRON-	PRP
19395	156	16	grow	grow	VBP
19395	156	17	older	old	JJR
19395	156	18	or	or	CC
19395	156	19	perhaps	perhaps	RB
19395	156	20	depending	depend	VBG
19395	156	21	upon	upon	IN
19395	156	22	their	-PRON-	PRP$
19395	156	23	mass	mass	NN
19395	156	24	.	.	.
19395	157	1	It	-PRON-	PRP
19395	157	2	is	be	VBZ
19395	157	3	impossible	impossible	JJ
19395	157	4	within	within	IN
19395	157	5	these	these	DT
19395	157	6	limits	limit	NNS
19395	157	7	to	to	TO
19395	157	8	do	do	VB
19395	157	9	more	more	JJR
19395	157	10	than	than	IN
19395	157	11	to	to	TO
19395	157	12	give	give	VB
19395	157	13	some	some	DT
19395	157	14	indication	indication	NN
19395	157	15	of	of	IN
19395	157	16	the	the	DT
19395	157	17	scope	scope	NN
19395	157	18	of	of	IN
19395	157	19	the	the	DT
19395	157	20	new	new	JJ
19395	157	21	astronomy	astronomy	NN
19395	157	22	.	.	.
19395	158	1	Enough	Enough	NNP
19395	158	2	has	have	VBZ
19395	158	3	been	be	VBN
19395	158	4	said	say	VBN
19395	158	5	,	,	,
19395	158	6	however	however	RB
19395	158	7	,	,	,
19395	158	8	to	to	TO
19395	158	9	assist	assist	VB
19395	158	10	in	in	IN
19395	158	11	appreciating	appreciate	VBG
19395	158	12	the	the	DT
19395	158	13	increased	increase	VBN
19395	158	14	opportunity	opportunity	NN
19395	158	15	for	for	IN
19395	158	16	investigation	investigation	NN
19395	158	17	,	,	,
19395	158	18	and	and	CC
19395	158	19	the	the	DT
19395	158	20	nature	nature	NN
19395	158	21	of	of	IN
19395	158	22	the	the	DT
19395	158	23	heavy	heavy	JJ
19395	158	24	demands	demand	NNS
19395	158	25	made	make	VBN
19395	158	26	upon	upon	IN
19395	158	27	the	the	DT
19395	158	28	modern	modern	JJ
19395	158	29	observatory	observatory	NN
19395	158	30	.	.	.
19395	159	1	But	but	CC
19395	159	2	before	before	IN
19395	159	3	passing	pass	VBG
19395	159	4	on	on	RP
19395	159	5	to	to	TO
19395	159	6	describe	describe	VB
19395	159	7	one	one	CD
19395	159	8	of	of	IN
19395	159	9	the	the	DT
19395	159	10	latest	late	JJS
19395	159	11	additions	addition	NNS
19395	159	12	to	to	IN
19395	159	13	the	the	DT
19395	159	14	astronomer	astronomer	NN
19395	159	15	's	's	POS
19395	159	16	instrumental	instrumental	JJ
19395	159	17	equipment	equipment	NN
19395	159	18	,	,	,
19395	159	19	a	a	DT
19395	159	20	word	word	NN
19395	159	21	should	should	MD
19395	159	22	be	be	VB
19395	159	23	added	add	VBN
19395	159	24	regarding	regard	VBG
19395	159	25	the	the	DT
19395	159	26	chief	chief	JJ
19395	159	27	classes	class	NNS
19395	159	28	of	of	IN
19395	159	29	telescopes	telescope	NNS
19395	159	30	.	.	.
19395	160	1	REFRACTORS	REFRACTORS	NNP
19395	160	2	AND	and	CC
19395	160	3	REFLECTORS	REFLECTORS	NNP
19395	160	4	Astronomical	astronomical	JJ
19395	160	5	telescopes	telescope	NNS
19395	160	6	are	be	VBP
19395	160	7	of	of	IN
19395	160	8	two	two	CD
19395	160	9	types	type	NNS
19395	160	10	:	:	:
19395	160	11	refractors	refractor	NNS
19395	160	12	and	and	CC
19395	160	13	reflectors	reflector	NNS
19395	160	14	.	.	.
19395	161	1	A	a	DT
19395	161	2	refracting	refracting	NN
19395	161	3	telescope	telescope	NN
19395	161	4	consists	consist	VBZ
19395	161	5	of	of	IN
19395	161	6	an	an	DT
19395	161	7	object	object	JJ
19395	161	8	-	-	HYPH
19395	161	9	glass	glass	NN
19395	161	10	composed	compose	VBN
19395	161	11	of	of	IN
19395	161	12	two	two	CD
19395	161	13	or	or	CC
19395	161	14	more	more	JJR
19395	161	15	lenses	lense	NNS
19395	161	16	,	,	,
19395	161	17	mounted	mount	VBN
19395	161	18	at	at	IN
19395	161	19	the	the	DT
19395	161	20	upper	upper	JJ
19395	161	21	end	end	NN
19395	161	22	of	of	IN
19395	161	23	a	a	DT
19395	161	24	tube	tube	NN
19395	161	25	,	,	,
19395	161	26	which	which	WDT
19395	161	27	is	be	VBZ
19395	161	28	pointed	point	VBN
19395	161	29	at	at	IN
19395	161	30	the	the	DT
19395	161	31	celestial	celestial	JJ
19395	161	32	object	object	NN
19395	161	33	.	.	.
19395	162	1	The	the	DT
19395	162	2	light	light	NN
19395	162	3	,	,	,
19395	162	4	after	after	IN
19395	162	5	passing	pass	VBG
19395	162	6	through	through	IN
19395	162	7	the	the	DT
19395	162	8	lenses	lense	NNS
19395	162	9	,	,	,
19395	162	10	is	be	VBZ
19395	162	11	brought	bring	VBN
19395	162	12	to	to	IN
19395	162	13	a	a	DT
19395	162	14	focus	focus	NN
19395	162	15	at	at	IN
19395	162	16	the	the	DT
19395	162	17	lower	low	JJR
19395	162	18	end	end	NN
19395	162	19	of	of	IN
19395	162	20	the	the	DT
19395	162	21	tube	tube	NN
19395	162	22	,	,	,
19395	162	23	where	where	WRB
19395	162	24	the	the	DT
19395	162	25	image	image	NN
19395	162	26	is	be	VBZ
19395	162	27	examined	examine	VBN
19395	162	28	visually	visually	RB
19395	162	29	with	with	IN
19395	162	30	an	an	DT
19395	162	31	eyepiece	eyepiece	NN
19395	162	32	,	,	,
19395	162	33	or	or	CC
19395	162	34	photographed	photograph	VBN
19395	162	35	upon	upon	IN
19395	162	36	a	a	DT
19395	162	37	sensitive	sensitive	JJ
19395	162	38	plate	plate	NN
19395	162	39	.	.	.
19395	163	1	The	the	DT
19395	163	2	largest	large	JJS
19395	163	3	instruments	instrument	NNS
19395	163	4	of	of	IN
19395	163	5	this	this	DT
19395	163	6	type	type	NN
19395	163	7	are	be	VBP
19395	163	8	the	the	DT
19395	163	9	36-inch	36-inch	CD
19395	163	10	Lick	Lick	NNP
19395	163	11	telescope	telescope	NN
19395	163	12	and	and	CC
19395	163	13	the	the	DT
19395	163	14	40-inch	40-inch	CD
19395	163	15	refractor	refractor	NN
19395	163	16	of	of	IN
19395	163	17	the	the	DT
19395	163	18	Yerkes	Yerkes	NNPS
19395	163	19	Observatory	Observatory	NNP
19395	163	20	.	.	.
19395	164	1	[	[	-LRB-
19395	164	2	Illustration	illustration	NN
19395	164	3	:	:	:
19395	164	4	Fig	Fig	NNP
19395	164	5	.	.	.
19395	165	1	8	8	LS
19395	165	2	.	.	.
19395	166	1	Erecting	erect	VBG
19395	166	2	the	the	DT
19395	166	3	steel	steel	NN
19395	166	4	building	building	NN
19395	166	5	and	and	CC
19395	166	6	revolving	revolving	JJ
19395	166	7	dome	dome	NN
19395	166	8	that	that	WDT
19395	166	9	cover	cover	VBP
19395	166	10	the	the	DT
19395	166	11	Hooker	Hooker	NNP
19395	166	12	telescope	telescope	NN
19395	166	13	.	.	.
19395	166	14	]	]	-RRB-
19395	167	1	Reflecting	reflect	VBG
19395	167	2	telescopes	telescope	NNS
19395	167	3	,	,	,
19395	167	4	which	which	WDT
19395	167	5	are	be	VBP
19395	167	6	particularly	particularly	RB
19395	167	7	adapted	adapt	VBN
19395	167	8	for	for	IN
19395	167	9	photographic	photographic	JJ
19395	167	10	work	work	NN
19395	167	11	,	,	,
19395	167	12	though	though	IN
19395	167	13	also	also	RB
19395	167	14	excellent	excellent	JJ
19395	167	15	for	for	IN
19395	167	16	visual	visual	JJ
19395	167	17	observations	observation	NNS
19395	167	18	,	,	,
19395	167	19	are	be	VBP
19395	167	20	very	very	RB
19395	167	21	differently	differently	RB
19395	167	22	constructed	construct	VBN
19395	167	23	.	.	.
19395	168	1	No	no	DT
19395	168	2	lens	lens	NN
19395	168	3	is	be	VBZ
19395	168	4	used	use	VBN
19395	168	5	.	.	.
19395	169	1	The	the	DT
19395	169	2	telescope	telescope	NN
19395	169	3	tube	tube	NN
19395	169	4	is	be	VBZ
19395	169	5	usually	usually	RB
19395	169	6	built	build	VBN
19395	169	7	in	in	IN
19395	169	8	skeleton	skeleton	NNP
19395	169	9	form	form	NN
19395	169	10	,	,	,
19395	169	11	open	open	JJ
19395	169	12	at	at	IN
19395	169	13	its	-PRON-	PRP$
19395	169	14	upper	upper	JJ
19395	169	15	end	end	NN
19395	169	16	,	,	,
19395	169	17	and	and	CC
19395	169	18	with	with	IN
19395	169	19	a	a	DT
19395	169	20	large	large	JJ
19395	169	21	concave	concave	NNP
19395	169	22	mirror	mirror	NN
19395	169	23	supported	support	VBN
19395	169	24	at	at	IN
19395	169	25	its	-PRON-	PRP$
19395	169	26	base	base	NN
19395	169	27	.	.	.
19395	170	1	This	this	DT
19395	170	2	mirror	mirror	NN
19395	170	3	serves	serve	VBZ
19395	170	4	in	in	IN
19395	170	5	place	place	NN
19395	170	6	of	of	IN
19395	170	7	a	a	DT
19395	170	8	lens	lens	NN
19395	170	9	.	.	.
19395	171	1	Its	-PRON-	PRP$
19395	171	2	upper	upper	JJ
19395	171	3	surface	surface	NN
19395	171	4	is	be	VBZ
19395	171	5	paraboloidal	paraboloidal	NN
19395	171	6	in	in	IN
19395	171	7	shape	shape	NN
19395	171	8	,	,	,
19395	171	9	as	as	IN
19395	171	10	a	a	DT
19395	171	11	spherical	spherical	JJ
19395	171	12	surface	surface	NN
19395	171	13	will	will	MD
19395	171	14	not	not	RB
19395	171	15	unite	unite	VB
19395	171	16	in	in	IN
19395	171	17	a	a	DT
19395	171	18	sharp	sharp	JJ
19395	171	19	focus	focus	NN
19395	171	20	the	the	DT
19395	171	21	rays	ray	NNS
19395	171	22	coming	come	VBG
19395	171	23	from	from	IN
19395	171	24	a	a	DT
19395	171	25	distant	distant	JJ
19395	171	26	object	object	NN
19395	171	27	.	.	.
19395	172	1	The	the	DT
19395	172	2	light	light	NN
19395	172	3	passes	pass	VBZ
19395	172	4	through	through	IN
19395	172	5	no	no	DT
19395	172	6	glass	glass	NN
19395	172	7	--	--	:
19395	172	8	a	a	DT
19395	172	9	great	great	JJ
19395	172	10	advantage	advantage	NN
19395	172	11	,	,	,
19395	172	12	especially	especially	RB
19395	172	13	for	for	IN
19395	172	14	photography	photography	NN
19395	172	15	,	,	,
19395	172	16	as	as	IN
19395	172	17	the	the	DT
19395	172	18	absorption	absorption	NN
19395	172	19	in	in	IN
19395	172	20	lenses	lense	NNS
19395	172	21	cuts	cut	VBZ
19395	172	22	out	out	RP
19395	172	23	much	much	JJ
19395	172	24	of	of	IN
19395	172	25	the	the	DT
19395	172	26	blue	blue	JJ
19395	172	27	and	and	CC
19395	172	28	violet	violet	NN
19395	172	29	light	light	NN
19395	172	30	,	,	,
19395	172	31	to	to	TO
19395	172	32	which	which	WDT
19395	172	33	photographic	photographic	JJ
19395	172	34	plates	plate	NNS
19395	172	35	are	be	VBP
19395	172	36	most	most	RBS
19395	172	37	sensitive	sensitive	JJ
19395	172	38	.	.	.
19395	173	1	The	the	DT
19395	173	2	reflection	reflection	NN
19395	173	3	occurs	occur	VBZ
19395	173	4	on	on	IN
19395	173	5	the	the	DT
19395	173	6	_	_	NNP
19395	173	7	upper	upper	JJ
19395	173	8	_	_	NNP
19395	173	9	surface	surface	NN
19395	173	10	of	of	IN
19395	173	11	the	the	DT
19395	173	12	mirror	mirror	NN
19395	173	13	,	,	,
19395	173	14	which	which	WDT
19395	173	15	is	be	VBZ
19395	173	16	covered	cover	VBN
19395	173	17	with	with	IN
19395	173	18	a	a	DT
19395	173	19	coat	coat	NN
19395	173	20	of	of	IN
19395	173	21	pure	pure	JJ
19395	173	22	silver	silver	NN
19395	173	23	,	,	,
19395	173	24	renewed	renew	VBD
19395	173	25	several	several	JJ
19395	173	26	times	time	NNS
19395	173	27	a	a	DT
19395	173	28	year	year	NN
19395	173	29	and	and	CC
19395	173	30	always	always	RB
19395	173	31	kept	keep	VBD
19395	173	32	highly	highly	RB
19395	173	33	burnished	burnish	VBN
19395	173	34	.	.	.
19395	174	1	Silvered	silver	VBN
19395	174	2	glass	glass	NN
19395	174	3	is	be	VBZ
19395	174	4	better	well	JJR
19395	174	5	than	than	IN
19395	174	6	metals	metal	NNS
19395	174	7	or	or	CC
19395	174	8	other	other	JJ
19395	174	9	substances	substance	NNS
19395	174	10	for	for	IN
19395	174	11	telescope	telescope	NN
19395	174	12	mirrors	mirror	NNS
19395	174	13	,	,	,
19395	174	14	chiefly	chiefly	RB
19395	174	15	because	because	IN
19395	174	16	of	of	IN
19395	174	17	the	the	DT
19395	174	18	perfection	perfection	NN
19395	174	19	with	with	IN
19395	174	20	which	which	WDT
19395	174	21	glass	glass	NN
19395	174	22	can	can	MD
19395	174	23	be	be	VB
19395	174	24	ground	grind	VBN
19395	174	25	and	and	CC
19395	174	26	polished	polish	VBN
19395	174	27	,	,	,
19395	174	28	and	and	CC
19395	174	29	the	the	DT
19395	174	30	ease	ease	NN
19395	174	31	of	of	IN
19395	174	32	renewing	renew	VBG
19395	174	33	its	-PRON-	PRP$
19395	174	34	silvered	silvered	JJ
19395	174	35	surface	surface	NN
19395	174	36	when	when	WRB
19395	174	37	tarnished	tarnish	VBN
19395	174	38	.	.	.
19395	175	1	The	the	DT
19395	175	2	great	great	JJ
19395	175	3	reflectors	reflector	NNS
19395	175	4	of	of	IN
19395	175	5	Herschel	Herschel	NNP
19395	175	6	and	and	CC
19395	175	7	Lord	Lord	NNP
19395	175	8	Rosse	Rosse	NNP
19395	175	9	,	,	,
19395	175	10	which	which	WDT
19395	175	11	were	be	VBD
19395	175	12	provided	provide	VBN
19395	175	13	with	with	IN
19395	175	14	mirrors	mirror	NNS
19395	175	15	of	of	IN
19395	175	16	speculum	speculum	NN
19395	175	17	metal	metal	NN
19395	175	18	,	,	,
19395	175	19	were	be	VBD
19395	175	20	far	far	RB
19395	175	21	inferior	inferior	JJ
19395	175	22	to	to	IN
19395	175	23	much	much	RB
19395	175	24	smaller	small	JJR
19395	175	25	telescopes	telescope	NNS
19395	175	26	of	of	IN
19395	175	27	the	the	DT
19395	175	28	present	present	JJ
19395	175	29	day	day	NN
19395	175	30	.	.	.
19395	176	1	With	with	IN
19395	176	2	these	these	DT
19395	176	3	instruments	instrument	NNS
19395	176	4	the	the	DT
19395	176	5	star	star	NN
19395	176	6	images	image	NNS
19395	176	7	were	be	VBD
19395	176	8	watched	watch	VBN
19395	176	9	as	as	IN
19395	176	10	they	-PRON-	PRP
19395	176	11	were	be	VBD
19395	176	12	carried	carry	VBN
19395	176	13	through	through	IN
19395	176	14	the	the	DT
19395	176	15	field	field	NN
19395	176	16	of	of	IN
19395	176	17	view	view	NN
19395	176	18	by	by	IN
19395	176	19	the	the	DT
19395	176	20	earth	earth	NN
19395	176	21	's	's	POS
19395	176	22	rotation	rotation	NN
19395	176	23	,	,	,
19395	176	24	or	or	CC
19395	176	25	kept	keep	VBD
19395	176	26	roughly	roughly	RB
19395	176	27	in	in	IN
19395	176	28	place	place	NN
19395	176	29	by	by	IN
19395	176	30	moving	move	VBG
19395	176	31	the	the	DT
19395	176	32	telescope	telescope	NN
19395	176	33	with	with	IN
19395	176	34	ropes	rope	NNS
19395	176	35	or	or	CC
19395	176	36	chains	chain	NNS
19395	176	37	.	.	.
19395	177	1	Photographic	photographic	JJ
19395	177	2	plates	plate	NNS
19395	177	3	,	,	,
19395	177	4	which	which	WDT
19395	177	5	reveal	reveal	VBP
19395	177	6	invisible	invisible	JJ
19395	177	7	stars	star	NNS
19395	177	8	and	and	CC
19395	177	9	nebulæ	nebulæ	NN
19395	177	10	when	when	WRB
19395	177	11	exposed	expose	VBN
19395	177	12	for	for	IN
19395	177	13	hours	hour	NNS
19395	177	14	in	in	IN
19395	177	15	modern	modern	JJ
19395	177	16	instruments	instrument	NNS
19395	177	17	,	,	,
19395	177	18	were	be	VBD
19395	177	19	not	not	RB
19395	177	20	then	then	RB
19395	177	21	available	available	JJ
19395	177	22	.	.	.
19395	178	1	In	in	IN
19395	178	2	any	any	DT
19395	178	3	case	case	NN
19395	178	4	they	-PRON-	PRP
19395	178	5	could	could	MD
19395	178	6	not	not	RB
19395	178	7	have	have	VB
19395	178	8	been	be	VBN
19395	178	9	used	use	VBN
19395	178	10	,	,	,
19395	178	11	in	in	IN
19395	178	12	the	the	DT
19395	178	13	absence	absence	NN
19395	178	14	of	of	IN
19395	178	15	the	the	DT
19395	178	16	perfect	perfect	JJ
19395	178	17	mechanism	mechanism	NN
19395	178	18	required	require	VBN
19395	178	19	to	to	TO
19395	178	20	keep	keep	VB
19395	178	21	the	the	DT
19395	178	22	star	star	NN
19395	178	23	images	image	NNS
19395	178	24	accurately	accurately	RB
19395	178	25	fixed	fix	VBN
19395	178	26	in	in	IN
19395	178	27	place	place	NN
19395	178	28	upon	upon	IN
19395	178	29	the	the	DT
19395	178	30	sensitive	sensitive	JJ
19395	178	31	film	film	NN
19395	178	32	.	.	.
19395	179	1	[	[	-LRB-
19395	179	2	Illustration	illustration	NN
19395	179	3	:	:	:
19395	179	4	Fig	Fig	NNP
19395	179	5	.	.	.
19395	180	1	9	9	CD
19395	180	2	.	.	.
19395	181	1	Building	build	VBG
19395	181	2	and	and	CC
19395	181	3	revolving	revolving	JJ
19395	181	4	dome	dome	NN
19395	181	5	,	,	,
19395	181	6	100	100	CD
19395	181	7	feet	foot	NNS
19395	181	8	in	in	IN
19395	181	9	diameter	diameter	NN
19395	181	10	,	,	,
19395	181	11	covering	cover	VBG
19395	181	12	the	the	DT
19395	181	13	100-inch	100-inch	CD
19395	181	14	Hooker	Hooker	NNP
19395	181	15	telescope	telescope	NN
19395	181	16	.	.	.
19395	182	1	Photographed	photograph	VBN
19395	182	2	from	from	IN
19395	182	3	the	the	DT
19395	182	4	summit	summit	NN
19395	182	5	of	of	IN
19395	182	6	the	the	DT
19395	182	7	150-foot	150-foot	CD
19395	182	8	-	-	HYPH
19395	182	9	tower	tower	NN
19395	182	10	telescope	telescope	NN
19395	182	11	.	.	.
19395	182	12	]	]	-RRB-
19395	183	1	It	-PRON-	PRP
19395	183	2	would	would	MD
19395	183	3	be	be	VB
19395	183	4	interesting	interesting	JJ
19395	183	5	to	to	TO
19395	183	6	trace	trace	VB
19395	183	7	the	the	DT
19395	183	8	long	long	JJ
19395	183	9	contest	contest	NN
19395	183	10	for	for	IN
19395	183	11	supremacy	supremacy	NN
19395	183	12	between	between	IN
19395	183	13	refracting	refract	VBG
19395	183	14	and	and	CC
19395	183	15	reflecting	reflect	VBG
19395	183	16	telescopes	telescope	NNS
19395	183	17	,	,	,
19395	183	18	each	each	DT
19395	183	19	of	of	IN
19395	183	20	which	which	WDT
19395	183	21	,	,	,
19395	183	22	at	at	IN
19395	183	23	certain	certain	JJ
19395	183	24	stages	stage	NNS
19395	183	25	in	in	IN
19395	183	26	its	-PRON-	PRP$
19395	183	27	development	development	NN
19395	183	28	,	,	,
19395	183	29	appeared	appear	VBD
19395	183	30	to	to	TO
19395	183	31	be	be	VB
19395	183	32	unrivalled	unrivalled	JJ
19395	183	33	.	.	.
19395	184	1	In	in	IN
19395	184	2	modern	modern	JJ
19395	184	3	observatories	observatory	NNS
19395	184	4	both	both	DT
19395	184	5	types	type	NNS
19395	184	6	are	be	VBP
19395	184	7	used	use	VBN
19395	184	8	,	,	,
19395	184	9	each	each	DT
19395	184	10	for	for	IN
19395	184	11	the	the	DT
19395	184	12	purpose	purpose	NN
19395	184	13	for	for	IN
19395	184	14	which	which	WDT
19395	184	15	it	-PRON-	PRP
19395	184	16	is	be	VBZ
19395	184	17	best	well	RBS
19395	184	18	adapted	adapt	VBN
19395	184	19	.	.	.
19395	185	1	For	for	IN
19395	185	2	the	the	DT
19395	185	3	photography	photography	NN
19395	185	4	of	of	IN
19395	185	5	nebulæ	nebulæ	NN
19395	185	6	and	and	CC
19395	185	7	the	the	DT
19395	185	8	study	study	NN
19395	185	9	of	of	IN
19395	185	10	the	the	DT
19395	185	11	fainter	fainter	NN
19395	185	12	stars	star	NNS
19395	185	13	,	,	,
19395	185	14	the	the	DT
19395	185	15	reflector	reflector	NN
19395	185	16	has	have	VBZ
19395	185	17	special	special	JJ
19395	185	18	advantages	advantage	NNS
19395	185	19	,	,	,
19395	185	20	illustrated	illustrate	VBN
19395	185	21	by	by	IN
19395	185	22	the	the	DT
19395	185	23	work	work	NN
19395	185	24	of	of	IN
19395	185	25	such	such	JJ
19395	185	26	instruments	instrument	NNS
19395	185	27	as	as	IN
19395	185	28	the	the	DT
19395	185	29	Crossley	Crossley	NNP
19395	185	30	and	and	CC
19395	185	31	Mills	Mills	NNP
19395	185	32	reflectors	reflector	NNS
19395	185	33	of	of	IN
19395	185	34	the	the	DT
19395	185	35	Lick	Lick	NNP
19395	185	36	Observatory	Observatory	NNP
19395	185	37	;	;	:
19395	185	38	the	the	DT
19395	185	39	great	great	JJ
19395	185	40	72-inch	72-inch	CD
19395	185	41	reflector	reflector	NN
19395	185	42	,	,	,
19395	185	43	recently	recently	RB
19395	185	44	brought	bring	VBD
19395	185	45	into	into	IN
19395	185	46	effective	effective	JJ
19395	185	47	service	service	NN
19395	185	48	at	at	IN
19395	185	49	the	the	DT
19395	185	50	Dominion	Dominion	NNP
19395	185	51	Observatory	Observatory	NNP
19395	185	52	in	in	IN
19395	185	53	Canada	Canada	NNP
19395	185	54	;	;	:
19395	185	55	and	and	CC
19395	185	56	the	the	DT
19395	185	57	60-inch	60-inch	CD
19395	185	58	and	and	CC
19395	185	59	100-inch	100-inch	CD
19395	185	60	reflectors	reflector	NNS
19395	185	61	of	of	IN
19395	185	62	the	the	DT
19395	185	63	Mount	Mount	NNP
19395	185	64	Wilson	Wilson	NNP
19395	185	65	Observatory	Observatory	NNP
19395	185	66	.	.	.
19395	186	1	The	the	DT
19395	186	2	unaided	unaided	JJ
19395	186	3	eye	eye	NN
19395	186	4	,	,	,
19395	186	5	with	with	IN
19395	186	6	an	an	DT
19395	186	7	available	available	JJ
19395	186	8	area	area	NN
19395	186	9	of	of	IN
19395	186	10	one	one	CD
19395	186	11	-	-	HYPH
19395	186	12	twentieth	twentieth	NN
19395	186	13	of	of	IN
19395	186	14	a	a	DT
19395	186	15	square	square	JJ
19395	186	16	inch	inch	NN
19395	186	17	,	,	,
19395	186	18	permits	permit	VBZ
19395	186	19	us	-PRON-	PRP
19395	186	20	to	to	TO
19395	186	21	see	see	VB
19395	186	22	stars	star	NNS
19395	186	23	of	of	IN
19395	186	24	the	the	DT
19395	186	25	sixth	sixth	JJ
19395	186	26	magnitude	magnitude	NN
19395	186	27	.	.	.
19395	187	1	Herschel	Herschel	NNP
19395	187	2	's	's	POS
19395	187	3	18-inch	18-inch	CD
19395	187	4	reflector	reflector	NN
19395	187	5	,	,	,
19395	187	6	with	with	IN
19395	187	7	an	an	DT
19395	187	8	area	area	NN
19395	187	9	5,000	5,000	CD
19395	187	10	times	time	NNS
19395	187	11	as	as	RB
19395	187	12	great	great	JJ
19395	187	13	,	,	,
19395	187	14	rendered	render	VBN
19395	187	15	visible	visible	JJ
19395	187	16	stars	star	NNS
19395	187	17	of	of	IN
19395	187	18	the	the	DT
19395	187	19	fifteenth	fifteenth	JJ
19395	187	20	magnitude	magnitude	NN
19395	187	21	.	.	.
19395	188	1	The	the	DT
19395	188	2	60-inch	60-inch	CD
19395	188	3	reflector	reflector	NN
19395	188	4	,	,	,
19395	188	5	with	with	IN
19395	188	6	an	an	DT
19395	188	7	area	area	NN
19395	188	8	57,600	57,600	CD
19395	188	9	times	time	NNS
19395	188	10	that	that	DT
19395	188	11	of	of	IN
19395	188	12	the	the	DT
19395	188	13	eye	eye	NN
19395	188	14	,	,	,
19395	188	15	reveals	reveal	VBZ
19395	188	16	stars	star	NNS
19395	188	17	of	of	IN
19395	188	18	the	the	DT
19395	188	19	eighteenth	eighteenth	JJ
19395	188	20	magnitude	magnitude	NN
19395	188	21	,	,	,
19395	188	22	while	while	IN
19395	188	23	to	to	TO
19395	188	24	reach	reach	VB
19395	188	25	stars	star	NNS
19395	188	26	of	of	IN
19395	188	27	about	about	RB
19395	188	28	the	the	DT
19395	188	29	twentieth	twentieth	JJ
19395	188	30	magnitude	magnitude	NN
19395	188	31	,	,	,
19395	188	32	photographic	photographic	JJ
19395	188	33	exposures	exposure	NNS
19395	188	34	of	of	IN
19395	188	35	four	four	CD
19395	188	36	or	or	CC
19395	188	37	five	five	CD
19395	188	38	hours	hour	NNS
19395	188	39	suffice	suffice	VBP
19395	188	40	with	with	IN
19395	188	41	this	this	DT
19395	188	42	instrument	instrument	NN
19395	188	43	.	.	.
19395	189	1	Every	every	DT
19395	189	2	gain	gain	NN
19395	189	3	of	of	IN
19395	189	4	a	a	DT
19395	189	5	magnitude	magnitude	NN
19395	189	6	means	mean	VBZ
19395	189	7	a	a	DT
19395	189	8	great	great	JJ
19395	189	9	gain	gain	NN
19395	189	10	in	in	IN
19395	189	11	the	the	DT
19395	189	12	number	number	NN
19395	189	13	of	of	IN
19395	189	14	stars	star	NNS
19395	189	15	rendered	render	VBN
19395	189	16	visible	visible	JJ
19395	189	17	.	.	.
19395	190	1	Stars	star	NNS
19395	190	2	of	of	IN
19395	190	3	the	the	DT
19395	190	4	second	second	JJ
19395	190	5	magnitude	magnitude	NN
19395	190	6	are	be	VBP
19395	190	7	3.4	3.4	CD
19395	190	8	times	time	NNS
19395	190	9	as	as	RB
19395	190	10	numerous	numerous	JJ
19395	190	11	as	as	IN
19395	190	12	those	those	DT
19395	190	13	of	of	IN
19395	190	14	the	the	DT
19395	190	15	first	first	JJ
19395	190	16	,	,	,
19395	190	17	those	those	DT
19395	190	18	of	of	IN
19395	190	19	the	the	DT
19395	190	20	eighth	eighth	JJ
19395	190	21	magnitude	magnitude	NN
19395	190	22	are	be	VBP
19395	190	23	three	three	CD
19395	190	24	times	time	NNS
19395	190	25	as	as	RB
19395	190	26	numerous	numerous	JJ
19395	190	27	as	as	IN
19395	190	28	those	those	DT
19395	190	29	of	of	IN
19395	190	30	the	the	DT
19395	190	31	seventh	seventh	JJ
19395	190	32	,	,	,
19395	190	33	while	while	IN
19395	190	34	the	the	DT
19395	190	35	sixteenth	sixteenth	JJ
19395	190	36	magnitude	magnitude	NN
19395	190	37	stars	star	NNS
19395	190	38	are	be	VBP
19395	190	39	only	only	RB
19395	190	40	1.7	1.7	CD
19395	190	41	as	as	RB
19395	190	42	numerous	numerous	JJ
19395	190	43	as	as	IN
19395	190	44	those	those	DT
19395	190	45	of	of	IN
19395	190	46	the	the	DT
19395	190	47	fifteenth	fifteenth	JJ
19395	190	48	magnitude	magnitude	NN
19395	190	49	.	.	.
19395	191	1	This	this	DT
19395	191	2	steadily	steadily	RB
19395	191	3	decreasing	decrease	VBG
19395	191	4	ratio	ratio	NN
19395	191	5	is	be	VBZ
19395	191	6	probably	probably	RB
19395	191	7	due	due	IN
19395	191	8	to	to	IN
19395	191	9	an	an	DT
19395	191	10	actual	actual	JJ
19395	191	11	thinning	thinning	NN
19395	191	12	out	out	IN
19395	191	13	of	of	IN
19395	191	14	the	the	DT
19395	191	15	stars	star	NNS
19395	191	16	toward	toward	IN
19395	191	17	the	the	DT
19395	191	18	boundaries	boundary	NNS
19395	191	19	of	of	IN
19395	191	20	the	the	DT
19395	191	21	stellar	stellar	JJ
19395	191	22	universe	universe	NN
19395	191	23	,	,	,
19395	191	24	as	as	IN
19395	191	25	the	the	DT
19395	191	26	most	most	RBS
19395	191	27	exhaustive	exhaustive	JJ
19395	191	28	tests	test	NNS
19395	191	29	have	have	VBP
19395	191	30	failed	fail	VBN
19395	191	31	to	to	TO
19395	191	32	give	give	VB
19395	191	33	any	any	DT
19395	191	34	evidence	evidence	NN
19395	191	35	of	of	IN
19395	191	36	absorption	absorption	NN
19395	191	37	of	of	IN
19395	191	38	light	light	NN
19395	191	39	in	in	IN
19395	191	40	its	-PRON-	PRP$
19395	191	41	passage	passage	NN
19395	191	42	through	through	IN
19395	191	43	space	space	NN
19395	191	44	.	.	.
19395	192	1	But	but	CC
19395	192	2	in	in	IN
19395	192	3	spite	spite	NN
19395	192	4	of	of	IN
19395	192	5	this	this	DT
19395	192	6	decrease	decrease	NN
19395	192	7	,	,	,
19395	192	8	the	the	DT
19395	192	9	gain	gain	NN
19395	192	10	of	of	IN
19395	192	11	a	a	DT
19395	192	12	single	single	JJ
19395	192	13	additional	additional	JJ
19395	192	14	magnitude	magnitude	NN
19395	192	15	may	may	MD
19395	192	16	mean	mean	VB
19395	192	17	the	the	DT
19395	192	18	addition	addition	NN
19395	192	19	of	of	IN
19395	192	20	many	many	JJ
19395	192	21	millions	million	NNS
19395	192	22	of	of	IN
19395	192	23	stars	star	NNS
19395	192	24	to	to	IN
19395	192	25	the	the	DT
19395	192	26	total	total	NN
19395	192	27	of	of	IN
19395	192	28	those	those	DT
19395	192	29	already	already	RB
19395	192	30	shown	show	VBN
19395	192	31	by	by	IN
19395	192	32	the	the	DT
19395	192	33	60-inch	60-inch	CD
19395	192	34	reflector	reflector	NN
19395	192	35	.	.	.
19395	193	1	Here	here	RB
19395	193	2	is	be	VBZ
19395	193	3	one	one	CD
19395	193	4	of	of	IN
19395	193	5	the	the	DT
19395	193	6	chief	chief	JJ
19395	193	7	sources	source	NNS
19395	193	8	of	of	IN
19395	193	9	interest	interest	NN
19395	193	10	in	in	IN
19395	193	11	the	the	DT
19395	193	12	possibilities	possibility	NNS
19395	193	13	of	of	IN
19395	193	14	a	a	DT
19395	193	15	100-inch	100-inch	CD
19395	193	16	reflecting	reflect	VBG
19395	193	17	telescope	telescope	NN
19395	193	18	.	.	.
19395	194	1	100-INCH	100-inch	CD
19395	194	2	TELESCOPE	telescope	NN
19395	194	3	[	[	-LRB-
19395	194	4	Illustration	illustration	NN
19395	194	5	:	:	:
19395	194	6	Fig	Fig	NNP
19395	194	7	.	.	.
19395	195	1	10	10	CD
19395	195	2	.	.	.
19395	196	1	One	one	CD
19395	196	2	-	-	HYPH
19395	196	3	hundred	hundred	CD
19395	196	4	-	-	HYPH
19395	196	5	inch	inch	NN
19395	196	6	mirror	mirror	NN
19395	196	7	,	,	,
19395	196	8	just	just	RB
19395	196	9	silvered	silver	VBN
19395	196	10	,	,	,
19395	196	11	rising	rise	VBG
19395	196	12	out	out	IN
19395	196	13	of	of	IN
19395	196	14	the	the	DT
19395	196	15	silvering	silvering	NN
19395	196	16	-	-	HYPH
19395	196	17	room	room	NN
19395	196	18	in	in	IN
19395	196	19	pier	pier	NN
19395	196	20	before	before	IN
19395	196	21	attachment	attachment	NN
19395	196	22	to	to	TO
19395	196	23	lower	low	JJR
19395	196	24	end	end	NN
19395	196	25	of	of	IN
19395	196	26	telescope	telescope	NN
19395	196	27	tube	tube	NN
19395	196	28	.	.	.
19395	197	1	(	(	-LRB-
19395	197	2	Seen	see	VBN
19395	197	3	above	above	RB
19395	197	4	.	.	.
19395	197	5	)	)	-RRB-
19395	197	6	]	]	-RRB-
19395	198	1	In	in	IN
19395	198	2	1906	1906	CD
19395	198	3	the	the	DT
19395	198	4	late	late	JJ
19395	198	5	John	John	NNP
19395	198	6	D.	D.	NNP
19395	198	7	Hooker	Hooker	NNP
19395	198	8	,	,	,
19395	198	9	of	of	IN
19395	198	10	Los	Los	NNP
19395	198	11	Angeles	Angeles	NNP
19395	198	12	,	,	,
19395	198	13	gave	give	VBD
19395	198	14	the	the	DT
19395	198	15	Carnegie	Carnegie	NNP
19395	198	16	Institution	Institution	NNP
19395	198	17	of	of	IN
19395	198	18	Washington	Washington	NNP
19395	198	19	a	a	DT
19395	198	20	sum	sum	NN
19395	198	21	sufficient	sufficient	JJ
19395	198	22	to	to	TO
19395	198	23	construct	construct	VB
19395	198	24	a	a	DT
19395	198	25	telescope	telescope	NN
19395	198	26	mirror	mirror	NN
19395	198	27	100	100	CD
19395	198	28	inches	inch	NNS
19395	198	29	in	in	IN
19395	198	30	diameter	diameter	NN
19395	198	31	,	,	,
19395	198	32	and	and	CC
19395	198	33	thus	thus	RB
19395	198	34	large	large	JJ
19395	198	35	enough	enough	RB
19395	198	36	to	to	TO
19395	198	37	collect	collect	VB
19395	198	38	160,000	160,000	CD
19395	198	39	times	time	NNS
19395	198	40	the	the	DT
19395	198	41	light	light	NN
19395	198	42	received	receive	VBN
19395	198	43	by	by	IN
19395	198	44	the	the	DT
19395	198	45	eye	eye	NN
19395	198	46	.	.	.
19395	199	1	(	(	-LRB-
19395	199	2	Fig	fig	NN
19395	199	3	.	.	.
19395	200	1	10	10	CD
19395	200	2	.	.	.
19395	200	3	)	)	-RRB-
19395	201	1	The	the	DT
19395	201	2	casting	casting	NN
19395	201	3	and	and	CC
19395	201	4	annealing	annealing	NN
19395	201	5	of	of	IN
19395	201	6	a	a	DT
19395	201	7	suitable	suitable	JJ
19395	201	8	glass	glass	NN
19395	201	9	disk	disk	NN
19395	201	10	,	,	,
19395	201	11	101	101	CD
19395	201	12	inches	inch	NNS
19395	201	13	in	in	IN
19395	201	14	diameter	diameter	NN
19395	201	15	and	and	CC
19395	201	16	13	13	CD
19395	201	17	inches	inch	NNS
19395	201	18	thick	thick	JJ
19395	201	19	,	,	,
19395	201	20	weighing	weigh	VBG
19395	201	21	four	four	CD
19395	201	22	and	and	CC
19395	201	23	one	one	CD
19395	201	24	-	-	HYPH
19395	201	25	half	half	NN
19395	201	26	tons	ton	NNS
19395	201	27	,	,	,
19395	201	28	was	be	VBD
19395	201	29	a	a	DT
19395	201	30	most	most	RBS
19395	201	31	difficult	difficult	JJ
19395	201	32	operation	operation	NN
19395	201	33	,	,	,
19395	201	34	finally	finally	RB
19395	201	35	accomplished	accomplish	VBN
19395	201	36	by	by	IN
19395	201	37	a	a	DT
19395	201	38	great	great	JJ
19395	201	39	French	french	JJ
19395	201	40	glass	glass	NN
19395	201	41	company	company	NN
19395	201	42	at	at	IN
19395	201	43	their	-PRON-	PRP$
19395	201	44	factory	factory	NN
19395	201	45	in	in	IN
19395	201	46	the	the	DT
19395	201	47	Forest	Forest	NNP
19395	201	48	of	of	IN
19395	201	49	St.	St.	NNP
19395	201	50	Gobain	Gobain	NNP
19395	201	51	.	.	.
19395	202	1	A	a	DT
19395	202	2	special	special	JJ
19395	202	3	optical	optical	JJ
19395	202	4	laboratory	laboratory	NN
19395	202	5	was	be	VBD
19395	202	6	erected	erect	VBN
19395	202	7	at	at	IN
19395	202	8	the	the	DT
19395	202	9	Pasadena	Pasadena	NNP
19395	202	10	headquarters	headquarters	NN
19395	202	11	of	of	IN
19395	202	12	the	the	DT
19395	202	13	Mount	Mount	NNP
19395	202	14	Wilson	Wilson	NNP
19395	202	15	Observatory	Observatory	NNP
19395	202	16	,	,	,
19395	202	17	and	and	CC
19395	202	18	here	here	RB
19395	202	19	the	the	DT
19395	202	20	long	long	JJ
19395	202	21	task	task	NN
19395	202	22	of	of	IN
19395	202	23	grinding	grind	VBG
19395	202	24	,	,	,
19395	202	25	figuring	figuring	NN
19395	202	26	,	,	,
19395	202	27	and	and	CC
19395	202	28	testing	test	VBG
19395	202	29	the	the	DT
19395	202	30	mirror	mirror	NN
19395	202	31	was	be	VBD
19395	202	32	successfully	successfully	RB
19395	202	33	carried	carry	VBN
19395	202	34	out	out	RP
19395	202	35	by	by	IN
19395	202	36	the	the	DT
19395	202	37	observatory	observatory	NN
19395	202	38	opticians	optician	NNS
19395	202	39	.	.	.
19395	203	1	This	this	DT
19395	203	2	operation	operation	NN
19395	203	3	,	,	,
19395	203	4	which	which	WDT
19395	203	5	is	be	VBZ
19395	203	6	one	one	CD
19395	203	7	of	of	IN
19395	203	8	great	great	JJ
19395	203	9	delicacy	delicacy	NN
19395	203	10	,	,	,
19395	203	11	required	require	VBN
19395	203	12	years	year	NNS
19395	203	13	for	for	IN
19395	203	14	its	-PRON-	PRP$
19395	203	15	completion	completion	NN
19395	203	16	.	.	.
19395	204	1	Meanwhile	meanwhile	RB
19395	204	2	the	the	DT
19395	204	3	building	building	NN
19395	204	4	,	,	,
19395	204	5	dome	dome	NN
19395	204	6	,	,	,
19395	204	7	and	and	CC
19395	204	8	mounting	mount	VBG
19395	204	9	for	for	IN
19395	204	10	the	the	DT
19395	204	11	telescope	telescope	NN
19395	204	12	were	be	VBD
19395	204	13	designed	design	VBN
19395	204	14	by	by	IN
19395	204	15	members	member	NNS
19395	204	16	of	of	IN
19395	204	17	the	the	DT
19395	204	18	observatory	observatory	JJ
19395	204	19	staff	staff	NN
19395	204	20	,	,	,
19395	204	21	and	and	CC
19395	204	22	the	the	DT
19395	204	23	working	work	VBG
19395	204	24	drawings	drawing	NNS
19395	204	25	were	be	VBD
19395	204	26	prepared	prepare	VBN
19395	204	27	.	.	.
19395	205	1	An	an	DT
19395	205	2	opportune	opportune	JJ
19395	205	3	addition	addition	NN
19395	205	4	by	by	IN
19395	205	5	Mr.	Mr.	NNP
19395	205	6	Carnegie	Carnegie	NNP
19395	205	7	to	to	IN
19395	205	8	the	the	DT
19395	205	9	endowment	endowment	NN
19395	205	10	of	of	IN
19395	205	11	the	the	DT
19395	205	12	Carnegie	Carnegie	NNP
19395	205	13	Institution	Institution	NNP
19395	205	14	of	of	IN
19395	205	15	Washington	Washington	NNP
19395	205	16	,	,	,
19395	205	17	of	of	IN
19395	205	18	which	which	WDT
19395	205	19	the	the	DT
19395	205	20	observatory	observatory	NN
19395	205	21	is	be	VBZ
19395	205	22	a	a	DT
19395	205	23	branch	branch	NN
19395	205	24	,	,	,
19395	205	25	permitted	permit	VBD
19395	205	26	the	the	DT
19395	205	27	necessary	necessary	JJ
19395	205	28	appropriations	appropriation	NNS
19395	205	29	to	to	TO
19395	205	30	be	be	VB
19395	205	31	made	make	VBN
19395	205	32	for	for	IN
19395	205	33	the	the	DT
19395	205	34	completion	completion	NN
19395	205	35	and	and	CC
19395	205	36	erection	erection	NN
19395	205	37	of	of	IN
19395	205	38	the	the	DT
19395	205	39	telescope	telescope	NN
19395	205	40	.	.	.
19395	206	1	Though	though	IN
19395	206	2	delayed	delay	VBN
19395	206	3	by	by	IN
19395	206	4	the	the	DT
19395	206	5	war	war	NN
19395	206	6	,	,	,
19395	206	7	during	during	IN
19395	206	8	which	which	WDT
19395	206	9	the	the	DT
19395	206	10	mechanical	mechanical	JJ
19395	206	11	and	and	CC
19395	206	12	optical	optical	JJ
19395	206	13	facilities	facility	NNS
19395	206	14	of	of	IN
19395	206	15	the	the	DT
19395	206	16	observatory	observatory	JJ
19395	206	17	shops	shop	NNS
19395	206	18	were	be	VBD
19395	206	19	utilized	utilize	VBN
19395	206	20	for	for	IN
19395	206	21	military	military	NN
19395	206	22	and	and	CC
19395	206	23	naval	naval	JJ
19395	206	24	purposes	purpose	NNS
19395	206	25	,	,	,
19395	206	26	the	the	DT
19395	206	27	telescope	telescope	NN
19395	206	28	is	be	VBZ
19395	206	29	now	now	RB
19395	206	30	in	in	IN
19395	206	31	regular	regular	JJ
19395	206	32	use	use	NN
19395	206	33	on	on	IN
19395	206	34	Mount	Mount	NNP
19395	206	35	Wilson	Wilson	NNP
19395	206	36	.	.	.
19395	207	1	The	the	DT
19395	207	2	instrument	instrument	NN
19395	207	3	is	be	VBZ
19395	207	4	mounted	mount	VBN
19395	207	5	on	on	IN
19395	207	6	a	a	DT
19395	207	7	massive	massive	JJ
19395	207	8	pier	pier	NN
19395	207	9	of	of	IN
19395	207	10	reinforced	reinforce	VBN
19395	207	11	concrete	concrete	NN
19395	207	12	,	,	,
19395	207	13	33	33	CD
19395	207	14	feet	foot	NNS
19395	207	15	high	high	JJ
19395	207	16	and	and	CC
19395	207	17	52	52	CD
19395	207	18	feet	foot	NNS
19395	207	19	in	in	IN
19395	207	20	diameter	diameter	NN
19395	207	21	at	at	IN
19395	207	22	the	the	DT
19395	207	23	top	top	NN
19395	207	24	.	.	.
19395	208	1	A	a	DT
19395	208	2	solid	solid	JJ
19395	208	3	wall	wall	NN
19395	208	4	extends	extend	VBZ
19395	208	5	south	south	RB
19395	208	6	from	from	IN
19395	208	7	this	this	DT
19395	208	8	pier	pier	NN
19395	208	9	a	a	DT
19395	208	10	distance	distance	NN
19395	208	11	of	of	IN
19395	208	12	50	50	CD
19395	208	13	feet	foot	NNS
19395	208	14	,	,	,
19395	208	15	on	on	IN
19395	208	16	the	the	DT
19395	208	17	west	west	JJ
19395	208	18	side	side	NN
19395	208	19	of	of	IN
19395	208	20	which	which	WDT
19395	208	21	a	a	DT
19395	208	22	very	very	RB
19395	208	23	powerful	powerful	JJ
19395	208	24	spectrograph	spectrograph	NN
19395	208	25	,	,	,
19395	208	26	for	for	IN
19395	208	27	photographing	photograph	VBG
19395	208	28	the	the	DT
19395	208	29	spectra	spectra	NN
19395	208	30	of	of	IN
19395	208	31	the	the	DT
19395	208	32	brightest	bright	JJS
19395	208	33	stars	star	NNS
19395	208	34	,	,	,
19395	208	35	will	will	MD
19395	208	36	be	be	VB
19395	208	37	mounted	mount	VBN
19395	208	38	.	.	.
19395	209	1	Within	within	IN
19395	209	2	the	the	DT
19395	209	3	pier	pier	NN
19395	209	4	are	be	VBP
19395	209	5	a	a	DT
19395	209	6	photographic	photographic	JJ
19395	209	7	dark	dark	JJ
19395	209	8	room	room	NN
19395	209	9	,	,	,
19395	209	10	a	a	DT
19395	209	11	room	room	NN
19395	209	12	for	for	IN
19395	209	13	silvering	silver	VBG
19395	209	14	the	the	DT
19395	209	15	large	large	JJ
19395	209	16	mirror	mirror	NN
19395	209	17	(	(	-LRB-
19395	209	18	which	which	WDT
19395	209	19	can	can	MD
19395	209	20	be	be	VB
19395	209	21	lowered	lower	VBN
19395	209	22	into	into	IN
19395	209	23	the	the	DT
19395	209	24	pier	pier	NN
19395	209	25	)	)	-RRB-
19395	209	26	,	,	,
19395	209	27	and	and	CC
19395	209	28	the	the	DT
19395	209	29	clock	clock	NN
19395	209	30	-	-	HYPH
19395	209	31	room	room	NN
19395	209	32	,	,	,
19395	209	33	where	where	WRB
19395	209	34	stands	stand	VBZ
19395	209	35	the	the	DT
19395	209	36	powerful	powerful	JJ
19395	209	37	driving	driving	NN
19395	209	38	-	-	HYPH
19395	209	39	clock	clock	NN
19395	209	40	,	,	,
19395	209	41	with	with	IN
19395	209	42	which	which	WDT
19395	209	43	the	the	DT
19395	209	44	telescope	telescope	NN
19395	209	45	is	be	VBZ
19395	209	46	caused	cause	VBN
19395	209	47	to	to	TO
19395	209	48	follow	follow	VB
19395	209	49	the	the	DT
19395	209	50	apparent	apparent	JJ
19395	209	51	motion	motion	NN
19395	209	52	of	of	IN
19395	209	53	the	the	DT
19395	209	54	stars	star	NNS
19395	209	55	.	.	.
19395	210	1	(	(	-LRB-
19395	210	2	Fig	fig	NN
19395	210	3	.	.	.
19395	211	1	11	11	CD
19395	211	2	.	.	.
19395	211	3	)	)	-RRB-
19395	212	1	[	[	-LRB-
19395	212	2	Illustration	illustration	NN
19395	212	3	:	:	:
19395	212	4	Fig	Fig	NNP
19395	212	5	.	.	.
19395	213	1	11	11	CD
19395	213	2	.	.	.
19395	214	1	The	the	DT
19395	214	2	driving	drive	VBG
19395	214	3	-	-	HYPH
19395	214	4	clock	clock	NN
19395	214	5	and	and	CC
19395	214	6	worm	worm	NN
19395	214	7	-	-	HYPH
19395	214	8	gear	gear	NN
19395	214	9	that	that	WDT
19395	214	10	cause	cause	VBP
19395	214	11	the	the	DT
19395	214	12	100-inch	100-inch	CD
19395	214	13	Hooker	Hooker	NNP
19395	214	14	telescope	telescope	NN
19395	214	15	to	to	TO
19395	214	16	follow	follow	VB
19395	214	17	the	the	DT
19395	214	18	stars	star	NNS
19395	214	19	.	.	.
19395	214	20	]	]	-RRB-
19395	215	1	The	the	DT
19395	215	2	telescope	telescope	NN
19395	215	3	mounting	mount	VBG
19395	215	4	is	be	VBZ
19395	215	5	of	of	IN
19395	215	6	the	the	DT
19395	215	7	English	English	NNP
19395	215	8	type	type	NN
19395	215	9	,	,	,
19395	215	10	in	in	IN
19395	215	11	which	which	WDT
19395	215	12	the	the	DT
19395	215	13	telescope	telescope	NN
19395	215	14	tube	tube	NN
19395	215	15	is	be	VBZ
19395	215	16	supported	support	VBN
19395	215	17	by	by	IN
19395	215	18	the	the	DT
19395	215	19	declination	declination	NN
19395	215	20	trunnions	trunnion	NNS
19395	215	21	between	between	IN
19395	215	22	the	the	DT
19395	215	23	arms	arm	NNS
19395	215	24	of	of	IN
19395	215	25	the	the	DT
19395	215	26	polar	polar	JJ
19395	215	27	axis	axi	NNS
19395	215	28	,	,	,
19395	215	29	built	build	VBN
19395	215	30	in	in	IN
19395	215	31	the	the	DT
19395	215	32	form	form	NN
19395	215	33	of	of	IN
19395	215	34	a	a	DT
19395	215	35	rectangular	rectangular	JJ
19395	215	36	yoke	yoke	NN
19395	215	37	carried	carry	VBN
19395	215	38	by	by	IN
19395	215	39	bearings	bearing	NNS
19395	215	40	on	on	IN
19395	215	41	massive	massive	JJ
19395	215	42	pedestals	pedestal	NNS
19395	215	43	to	to	IN
19395	215	44	the	the	DT
19395	215	45	north	north	NN
19395	215	46	and	and	CC
19395	215	47	south	south	NN
19395	215	48	.	.	.
19395	216	1	These	these	DT
19395	216	2	bearings	bearing	NNS
19395	216	3	must	must	MD
19395	216	4	be	be	VB
19395	216	5	aligned	align	VBN
19395	216	6	exactly	exactly	RB
19395	216	7	parallel	parallel	JJ
19395	216	8	to	to	IN
19395	216	9	the	the	DT
19395	216	10	axis	axi	NNS
19395	216	11	of	of	IN
19395	216	12	the	the	DT
19395	216	13	earth	earth	NN
19395	216	14	,	,	,
19395	216	15	and	and	CC
19395	216	16	must	must	MD
19395	216	17	support	support	VB
19395	216	18	the	the	DT
19395	216	19	polar	polar	JJ
19395	216	20	axis	axi	NNS
19395	216	21	so	so	RB
19395	216	22	freely	freely	RB
19395	216	23	that	that	IN
19395	216	24	it	-PRON-	PRP
19395	216	25	can	can	MD
19395	216	26	be	be	VB
19395	216	27	rotated	rotate	VBN
19395	216	28	with	with	IN
19395	216	29	perfect	perfect	JJ
19395	216	30	precision	precision	NN
19395	216	31	by	by	IN
19395	216	32	the	the	DT
19395	216	33	driving	driving	NN
19395	216	34	-	-	HYPH
19395	216	35	clock	clock	NN
19395	216	36	,	,	,
19395	216	37	which	which	WDT
19395	216	38	turns	turn	VBZ
19395	216	39	a	a	DT
19395	216	40	worm	worm	NN
19395	216	41	-	-	HYPH
19395	216	42	wheel	wheel	NN
19395	216	43	17	17	CD
19395	216	44	feet	foot	NNS
19395	216	45	in	in	IN
19395	216	46	diameter	diameter	NN
19395	216	47	,	,	,
19395	216	48	clamped	clamp	VBN
19395	216	49	to	to	IN
19395	216	50	the	the	DT
19395	216	51	lower	low	JJR
19395	216	52	end	end	NN
19395	216	53	of	of	IN
19395	216	54	the	the	DT
19395	216	55	axis	axi	NNS
19395	216	56	.	.	.
19395	217	1	As	as	IN
19395	217	2	this	this	DT
19395	217	3	motion	motion	NN
19395	217	4	must	must	MD
19395	217	5	be	be	VB
19395	217	6	sufficiently	sufficiently	RB
19395	217	7	uniform	uniform	JJ
19395	217	8	to	to	TO
19395	217	9	counteract	counteract	VB
19395	217	10	exactly	exactly	RB
19395	217	11	the	the	DT
19395	217	12	rotation	rotation	NN
19395	217	13	of	of	IN
19395	217	14	the	the	DT
19395	217	15	earth	earth	NN
19395	217	16	on	on	IN
19395	217	17	its	-PRON-	PRP$
19395	217	18	axis	axis	NN
19395	217	19	,	,	,
19395	217	20	and	and	CC
19395	217	21	thus	thus	RB
19395	217	22	to	to	TO
19395	217	23	maintain	maintain	VB
19395	217	24	the	the	DT
19395	217	25	star	star	NN
19395	217	26	images	image	NNS
19395	217	27	accurately	accurately	RB
19395	217	28	in	in	IN
19395	217	29	position	position	NN
19395	217	30	in	in	IN
19395	217	31	the	the	DT
19395	217	32	field	field	NN
19395	217	33	of	of	IN
19395	217	34	view	view	NN
19395	217	35	,	,	,
19395	217	36	the	the	DT
19395	217	37	greatest	great	JJS
19395	217	38	care	care	NN
19395	217	39	had	have	VBD
19395	217	40	to	to	TO
19395	217	41	be	be	VB
19395	217	42	taken	take	VBN
19395	217	43	in	in	IN
19395	217	44	the	the	DT
19395	217	45	construction	construction	NN
19395	217	46	of	of	IN
19395	217	47	the	the	DT
19395	217	48	driving	driving	NN
19395	217	49	-	-	HYPH
19395	217	50	clock	clock	NN
19395	217	51	and	and	CC
19395	217	52	in	in	IN
19395	217	53	the	the	DT
19395	217	54	spacing	spacing	NN
19395	217	55	and	and	CC
19395	217	56	cutting	cutting	NN
19395	217	57	of	of	IN
19395	217	58	the	the	DT
19395	217	59	teeth	tooth	NNS
19395	217	60	in	in	IN
19395	217	61	the	the	DT
19395	217	62	large	large	JJ
19395	217	63	worm	worm	NN
19395	217	64	-	-	HYPH
19395	217	65	wheel	wheel	NN
19395	217	66	.	.	.
19395	218	1	Here	here	RB
19395	218	2	,	,	,
19395	218	3	as	as	IN
19395	218	4	in	in	IN
19395	218	5	the	the	DT
19395	218	6	case	case	NN
19395	218	7	of	of	IN
19395	218	8	all	all	DT
19395	218	9	of	of	IN
19395	218	10	the	the	DT
19395	218	11	more	more	RBR
19395	218	12	refined	refined	JJ
19395	218	13	parts	part	NNS
19395	218	14	of	of	IN
19395	218	15	the	the	DT
19395	218	16	instrument	instrument	NN
19395	218	17	,	,	,
19395	218	18	the	the	DT
19395	218	19	work	work	NN
19395	218	20	was	be	VBD
19395	218	21	done	do	VBN
19395	218	22	by	by	IN
19395	218	23	skilled	skilled	JJ
19395	218	24	machinists	machinist	NNS
19395	218	25	in	in	IN
19395	218	26	the	the	DT
19395	218	27	observatory	observatory	JJ
19395	218	28	shops	shop	NNS
19395	218	29	in	in	IN
19395	218	30	Pasadena	Pasadena	NNP
19395	218	31	or	or	CC
19395	218	32	on	on	IN
19395	218	33	Mount	Mount	NNP
19395	218	34	Wilson	Wilson	NNP
19395	218	35	after	after	IN
19395	218	36	the	the	DT
19395	218	37	assembling	assembling	NN
19395	218	38	of	of	IN
19395	218	39	the	the	DT
19395	218	40	telescope	telescope	NN
19395	218	41	.	.	.
19395	219	1	The	the	DT
19395	219	2	massive	massive	JJ
19395	219	3	sections	section	NNS
19395	219	4	of	of	IN
19395	219	5	the	the	DT
19395	219	6	instrument	instrument	NN
19395	219	7	,	,	,
19395	219	8	some	some	DT
19395	219	9	of	of	IN
19395	219	10	which	which	WDT
19395	219	11	weigh	weigh	VBP
19395	219	12	as	as	RB
19395	219	13	much	much	RB
19395	219	14	as	as	IN
19395	219	15	ten	ten	CD
19395	219	16	tons	ton	NNS
19395	219	17	each	each	DT
19395	219	18	,	,	,
19395	219	19	were	be	VBD
19395	219	20	constructed	construct	VBN
19395	219	21	at	at	IN
19395	219	22	Quincy	Quincy	NNP
19395	219	23	,	,	,
19395	219	24	Mass.	Massachusetts	NNP
19395	219	25	,	,	,
19395	219	26	where	where	WRB
19395	219	27	machinery	machinery	NN
19395	219	28	sufficiently	sufficiently	RB
19395	219	29	large	large	JJ
19395	219	30	to	to	TO
19395	219	31	build	build	VB
19395	219	32	battleships	battleship	NNS
19395	219	33	was	be	VBD
19395	219	34	available	available	JJ
19395	219	35	.	.	.
19395	220	1	They	-PRON-	PRP
19395	220	2	were	be	VBD
19395	220	3	then	then	RB
19395	220	4	shipped	ship	VBN
19395	220	5	to	to	IN
19395	220	6	California	California	NNP
19395	220	7	,	,	,
19395	220	8	and	and	CC
19395	220	9	transported	transport	VBD
19395	220	10	to	to	IN
19395	220	11	the	the	DT
19395	220	12	summit	summit	NN
19395	220	13	of	of	IN
19395	220	14	Mount	Mount	NNP
19395	220	15	Wilson	Wilson	NNP
19395	220	16	over	over	IN
19395	220	17	a	a	DT
19395	220	18	road	road	NN
19395	220	19	built	build	VBN
19395	220	20	for	for	IN
19395	220	21	this	this	DT
19395	220	22	purpose	purpose	NN
19395	220	23	by	by	IN
19395	220	24	the	the	DT
19395	220	25	construction	construction	NN
19395	220	26	division	division	NN
19395	220	27	of	of	IN
19395	220	28	the	the	DT
19395	220	29	observatory	observatory	NN
19395	220	30	,	,	,
19395	220	31	which	which	WDT
19395	220	32	also	also	RB
19395	220	33	built	build	VBD
19395	220	34	the	the	DT
19395	220	35	pier	pier	NN
19395	220	36	on	on	IN
19395	220	37	which	which	WDT
19395	220	38	the	the	DT
19395	220	39	telescope	telescope	NN
19395	220	40	stands	stand	VBZ
19395	220	41	,	,	,
19395	220	42	and	and	CC
19395	220	43	erected	erect	VBD
19395	220	44	the	the	DT
19395	220	45	steel	steel	NN
19395	220	46	building	building	NN
19395	220	47	and	and	CC
19395	220	48	dome	dome	NN
19395	220	49	that	that	WDT
19395	220	50	cover	cover	VBP
19395	220	51	it	-PRON-	PRP
19395	220	52	.	.	.
19395	221	1	[	[	-LRB-
19395	221	2	Illustration	illustration	NN
19395	221	3	:	:	:
19395	221	4	Fig	Fig	NNP
19395	221	5	.	.	.
19395	222	1	12	12	CD
19395	222	2	.	.	.
19395	223	1	Large	large	JJ
19395	223	2	irregular	irregular	JJ
19395	223	3	nebula	nebula	NN
19395	223	4	and	and	CC
19395	223	5	star	star	NN
19395	223	6	cluster	cluster	NN
19395	223	7	in	in	IN
19395	223	8	Sagittarius	Sagittarius	NNP
19395	223	9	(	(	-LRB-
19395	223	10	Duncan	Duncan	NNP
19395	223	11	)	)	-RRB-
19395	223	12	.	.	.
19395	224	1	Photographed	photograph	VBN
19395	224	2	with	with	IN
19395	224	3	the	the	DT
19395	224	4	60-inch	60-inch	CD
19395	224	5	telescope	telescope	NN
19395	224	6	.	.	.
19395	224	7	]	]	-RRB-
19395	225	1	[	[	-LRB-
19395	225	2	Illustration	illustration	NN
19395	225	3	:	:	:
19395	225	4	Fig	Fig	NNP
19395	225	5	.	.	.
19395	226	1	13	13	CD
19395	226	2	.	.	.
19395	227	1	Faint	faint	JJ
19395	227	2	spiral	spiral	JJ
19395	227	3	nebula	nebula	NN
19395	227	4	in	in	IN
19395	227	5	the	the	DT
19395	227	6	constellation	constellation	NN
19395	227	7	of	of	IN
19395	227	8	the	the	DT
19395	227	9	Hunting	Hunting	NNP
19395	227	10	Dogs	Dogs	NNP
19395	227	11	(	(	-LRB-
19395	227	12	Pease	Pease	NNP
19395	227	13	)	)	-RRB-
19395	227	14	.	.	.
19395	228	1	Photographed	photograph	VBN
19395	228	2	with	with	IN
19395	228	3	the	the	DT
19395	228	4	60-inch	60-inch	CD
19395	228	5	telescope	telescope	NN
19395	228	6	.	.	.
19395	228	7	]	]	-RRB-
19395	229	1	The	the	DT
19395	229	2	parts	part	NNS
19395	229	3	of	of	IN
19395	229	4	the	the	DT
19395	229	5	telescope	telescope	NN
19395	229	6	which	which	WDT
19395	229	7	are	be	VBP
19395	229	8	moved	move	VBN
19395	229	9	by	by	IN
19395	229	10	the	the	DT
19395	229	11	driving	driving	NN
19395	229	12	-	-	HYPH
19395	229	13	clock	clock	NN
19395	229	14	weigh	weigh	NN
19395	229	15	about	about	RB
19395	229	16	100	100	CD
19395	229	17	tons	ton	NNS
19395	229	18	,	,	,
19395	229	19	and	and	CC
19395	229	20	it	-PRON-	PRP
19395	229	21	was	be	VBD
19395	229	22	necessary	necessary	JJ
19395	229	23	to	to	TO
19395	229	24	provide	provide	VB
19395	229	25	means	mean	NNS
19395	229	26	of	of	IN
19395	229	27	reducing	reduce	VBG
19395	229	28	the	the	DT
19395	229	29	great	great	JJ
19395	229	30	friction	friction	NN
19395	229	31	on	on	IN
19395	229	32	the	the	DT
19395	229	33	bearings	bearing	NNS
19395	229	34	of	of	IN
19395	229	35	the	the	DT
19395	229	36	polar	polar	JJ
19395	229	37	axis	axis	NN
19395	229	38	.	.	.
19395	230	1	To	to	TO
19395	230	2	accomplish	accomplish	VB
19395	230	3	this	this	DT
19395	230	4	,	,	,
19395	230	5	large	large	JJ
19395	230	6	hollow	hollow	JJ
19395	230	7	steel	steel	NN
19395	230	8	cylinders	cylinder	NNS
19395	230	9	,	,	,
19395	230	10	floating	float	VBG
19395	230	11	in	in	IN
19395	230	12	mercury	mercury	NN
19395	230	13	held	hold	VBN
19395	230	14	in	in	IN
19395	230	15	cast	cast	NN
19395	230	16	-	-	HYPH
19395	230	17	iron	iron	NN
19395	230	18	tanks	tank	NNS
19395	230	19	,	,	,
19395	230	20	were	be	VBD
19395	230	21	provided	provide	VBN
19395	230	22	at	at	IN
19395	230	23	the	the	DT
19395	230	24	upper	upper	JJ
19395	230	25	and	and	CC
19395	230	26	lower	lower	JJ
19395	230	27	ends	end	NNS
19395	230	28	of	of	IN
19395	230	29	the	the	DT
19395	230	30	polar	polar	JJ
19395	230	31	axis	axis	NN
19395	230	32	.	.	.
19395	231	1	Almost	almost	RB
19395	231	2	the	the	DT
19395	231	3	entire	entire	JJ
19395	231	4	weight	weight	NN
19395	231	5	of	of	IN
19395	231	6	the	the	DT
19395	231	7	instrument	instrument	NN
19395	231	8	is	be	VBZ
19395	231	9	thus	thus	RB
19395	231	10	floated	float	VBN
19395	231	11	in	in	IN
19395	231	12	mercury	mercury	NN
19395	231	13	,	,	,
19395	231	14	and	and	CC
19395	231	15	in	in	IN
19395	231	16	this	this	DT
19395	231	17	way	way	NN
19395	231	18	the	the	DT
19395	231	19	friction	friction	NN
19395	231	20	is	be	VBZ
19395	231	21	so	so	RB
19395	231	22	greatly	greatly	RB
19395	231	23	reduced	reduce	VBN
19395	231	24	that	that	IN
19395	231	25	the	the	DT
19395	231	26	driving	drive	VBG
19395	231	27	-	-	HYPH
19395	231	28	clock	clock	NN
19395	231	29	moves	move	VBZ
19395	231	30	the	the	DT
19395	231	31	instrument	instrument	NN
19395	231	32	with	with	IN
19395	231	33	perfect	perfect	JJ
19395	231	34	ease	ease	NN
19395	231	35	and	and	CC
19395	231	36	smoothness	smoothness	JJ
19395	231	37	.	.	.
19395	232	1	The	the	DT
19395	232	2	100-inch	100-inch	CD
19395	232	3	mirror	mirror	NN
19395	232	4	rests	rest	NNS
19395	232	5	at	at	IN
19395	232	6	the	the	DT
19395	232	7	bottom	bottom	NN
19395	232	8	of	of	IN
19395	232	9	the	the	DT
19395	232	10	telescope	telescope	NN
19395	232	11	tube	tube	NN
19395	232	12	on	on	IN
19395	232	13	a	a	DT
19395	232	14	special	special	JJ
19395	232	15	support	support	NN
19395	232	16	system	system	NN
19395	232	17	,	,	,
19395	232	18	so	so	RB
19395	232	19	designed	design	VBN
19395	232	20	as	as	IN
19395	232	21	to	to	TO
19395	232	22	prevent	prevent	VB
19395	232	23	any	any	DT
19395	232	24	bending	bending	NN
19395	232	25	of	of	IN
19395	232	26	the	the	DT
19395	232	27	glass	glass	NN
19395	232	28	under	under	IN
19395	232	29	its	-PRON-	PRP$
19395	232	30	own	own	JJ
19395	232	31	weight	weight	NN
19395	232	32	.	.	.
19395	233	1	Electric	electric	JJ
19395	233	2	motors	motor	NNS
19395	233	3	,	,	,
19395	233	4	forty	forty	CD
19395	233	5	in	in	IN
19395	233	6	number	number	NN
19395	233	7	,	,	,
19395	233	8	are	be	VBP
19395	233	9	provided	provide	VBN
19395	233	10	to	to	TO
19395	233	11	move	move	VB
19395	233	12	the	the	DT
19395	233	13	telescope	telescope	NN
19395	233	14	rapidly	rapidly	RB
19395	233	15	or	or	CC
19395	233	16	slowly	slowly	RB
19395	233	17	in	in	IN
19395	233	18	right	right	JJ
19395	233	19	ascension	ascension	NN
19395	233	20	(	(	-LRB-
19395	233	21	east	east	NNP
19395	233	22	or	or	CC
19395	233	23	west	west	NNP
19395	233	24	)	)	-RRB-
19395	233	25	and	and	CC
19395	233	26	in	in	IN
19395	233	27	declination	declination	NN
19395	233	28	(	(	-LRB-
19395	233	29	north	north	NN
19395	233	30	or	or	CC
19395	233	31	south	south	NN
19395	233	32	)	)	-RRB-
19395	233	33	,	,	,
19395	233	34	for	for	IN
19395	233	35	focussing	focusse	VBG
19395	233	36	the	the	DT
19395	233	37	mirrors	mirror	NNS
19395	233	38	,	,	,
19395	233	39	and	and	CC
19395	233	40	for	for	IN
19395	233	41	many	many	JJ
19395	233	42	other	other	JJ
19395	233	43	purposes	purpose	NNS
19395	233	44	.	.	.
19395	234	1	They	-PRON-	PRP
19395	234	2	are	be	VBP
19395	234	3	also	also	RB
19395	234	4	used	use	VBN
19395	234	5	for	for	IN
19395	234	6	rotating	rotate	VBG
19395	234	7	the	the	DT
19395	234	8	dome	dome	NN
19395	234	9	,	,	,
19395	234	10	100	100	CD
19395	234	11	feet	foot	NNS
19395	234	12	in	in	IN
19395	234	13	diameter	diameter	NN
19395	234	14	,	,	,
19395	234	15	under	under	IN
19395	234	16	which	which	WDT
19395	234	17	the	the	DT
19395	234	18	telescope	telescope	NN
19395	234	19	is	be	VBZ
19395	234	20	mounted	mount	VBN
19395	234	21	,	,	,
19395	234	22	and	and	CC
19395	234	23	for	for	IN
19395	234	24	opening	open	VBG
19395	234	25	the	the	DT
19395	234	26	shutter	shutter	NN
19395	234	27	,	,	,
19395	234	28	20	20	CD
19395	234	29	feet	foot	NNS
19395	234	30	wide	wide	JJ
19395	234	31	,	,	,
19395	234	32	through	through	IN
19395	234	33	which	which	WDT
19395	234	34	the	the	DT
19395	234	35	observations	observation	NNS
19395	234	36	are	be	VBP
19395	234	37	made	make	VBN
19395	234	38	.	.	.
19395	235	1	A	a	DT
19395	235	2	telescope	telescope	NN
19395	235	3	of	of	IN
19395	235	4	this	this	DT
19395	235	5	kind	kind	NN
19395	235	6	can	can	MD
19395	235	7	be	be	VB
19395	235	8	used	use	VBN
19395	235	9	in	in	IN
19395	235	10	several	several	JJ
19395	235	11	different	different	JJ
19395	235	12	ways	way	NNS
19395	235	13	.	.	.
19395	236	1	The	the	DT
19395	236	2	100-inch	100-inch	CD
19395	236	3	mirror	mirror	NN
19395	236	4	has	have	VBZ
19395	236	5	a	a	DT
19395	236	6	focal	focal	JJ
19395	236	7	length	length	NN
19395	236	8	of	of	IN
19395	236	9	about	about	RB
19395	236	10	42	42	CD
19395	236	11	feet	foot	NNS
19395	236	12	,	,	,
19395	236	13	and	and	CC
19395	236	14	in	in	IN
19395	236	15	one	one	CD
19395	236	16	of	of	IN
19395	236	17	the	the	DT
19395	236	18	arrangements	arrangement	NNS
19395	236	19	of	of	IN
19395	236	20	the	the	DT
19395	236	21	instrument	instrument	NN
19395	236	22	,	,	,
19395	236	23	the	the	DT
19395	236	24	photographic	photographic	JJ
19395	236	25	plate	plate	NN
19395	236	26	is	be	VBZ
19395	236	27	mounted	mount	VBN
19395	236	28	at	at	IN
19395	236	29	the	the	DT
19395	236	30	centre	centre	NN
19395	236	31	of	of	IN
19395	236	32	the	the	DT
19395	236	33	telescope	telescope	NN
19395	236	34	tube	tube	NN
19395	236	35	near	near	IN
19395	236	36	its	-PRON-	PRP$
19395	236	37	upper	upper	JJ
19395	236	38	end	end	NN
19395	236	39	,	,	,
19395	236	40	where	where	WRB
19395	236	41	it	-PRON-	PRP
19395	236	42	receives	receive	VBZ
19395	236	43	directly	directly	RB
19395	236	44	the	the	DT
19395	236	45	image	image	NN
19395	236	46	formed	form	VBN
19395	236	47	by	by	IN
19395	236	48	the	the	DT
19395	236	49	large	large	JJ
19395	236	50	mirror	mirror	NN
19395	236	51	.	.	.
19395	237	1	In	in	IN
19395	237	2	another	another	DT
19395	237	3	arrangement	arrangement	NN
19395	237	4	,	,	,
19395	237	5	a	a	DT
19395	237	6	silvered	silver	VBN
19395	237	7	glass	glass	NN
19395	237	8	mirror	mirror	NN
19395	237	9	,	,	,
19395	237	10	with	with	IN
19395	237	11	plane	plane	NN
19395	237	12	surface	surface	NN
19395	237	13	,	,	,
19395	237	14	is	be	VBZ
19395	237	15	supported	support	VBN
19395	237	16	near	near	IN
19395	237	17	the	the	DT
19395	237	18	upper	upper	JJ
19395	237	19	end	end	NN
19395	237	20	of	of	IN
19395	237	21	the	the	DT
19395	237	22	tube	tube	NN
19395	237	23	at	at	IN
19395	237	24	an	an	DT
19395	237	25	angle	angle	NN
19395	237	26	of	of	IN
19395	237	27	45	45	CD
19395	237	28	°	°	NNS
19395	237	29	,	,	,
19395	237	30	so	so	IN
19395	237	31	as	as	IN
19395	237	32	to	to	TO
19395	237	33	form	form	VB
19395	237	34	the	the	DT
19395	237	35	image	image	NN
19395	237	36	at	at	IN
19395	237	37	the	the	DT
19395	237	38	side	side	NN
19395	237	39	of	of	IN
19395	237	40	the	the	DT
19395	237	41	tube	tube	NN
19395	237	42	,	,	,
19395	237	43	where	where	WRB
19395	237	44	the	the	DT
19395	237	45	photographic	photographic	JJ
19395	237	46	plate	plate	NN
19395	237	47	can	can	MD
19395	237	48	be	be	VB
19395	237	49	placed	place	VBN
19395	237	50	.	.	.
19395	238	1	In	in	IN
19395	238	2	this	this	DT
19395	238	3	case	case	NN
19395	238	4	,	,	,
19395	238	5	the	the	DT
19395	238	6	observer	observer	NN
19395	238	7	stands	stand	VBZ
19395	238	8	on	on	IN
19395	238	9	a	a	DT
19395	238	10	platform	platform	NN
19395	238	11	,	,	,
19395	238	12	which	which	WDT
19395	238	13	is	be	VBZ
19395	238	14	moved	move	VBN
19395	238	15	up	up	RB
19395	238	16	and	and	CC
19395	238	17	down	down	RB
19395	238	18	by	by	IN
19395	238	19	electric	electric	JJ
19395	238	20	motors	motor	NNS
19395	238	21	in	in	IN
19395	238	22	front	front	NN
19395	238	23	of	of	IN
19395	238	24	the	the	DT
19395	238	25	opening	opening	NN
19395	238	26	in	in	IN
19395	238	27	the	the	DT
19395	238	28	dome	dome	NN
19395	238	29	through	through	IN
19395	238	30	which	which	WDT
19395	238	31	the	the	DT
19395	238	32	observations	observation	NNS
19395	238	33	are	be	VBP
19395	238	34	made	make	VBN
19395	238	35	.	.	.
19395	239	1	[	[	-LRB-
19395	239	2	Illustration	illustration	NN
19395	239	3	:	:	:
19395	239	4	Fig	Fig	NNP
19395	239	5	.	.	.
19395	240	1	14	14	CD
19395	240	2	.	.	.
19395	241	1	Spiral	spiral	JJ
19395	241	2	nebula	nebula	NN
19395	241	3	in	in	IN
19395	241	4	Andromeda	Andromeda	NNP
19395	241	5	,	,	,
19395	241	6	seen	see	VBN
19395	241	7	edge	edge	NN
19395	241	8	on	on	IN
19395	241	9	(	(	-LRB-
19395	241	10	Ritchey	Ritchey	NNP
19395	241	11	)	)	-RRB-
19395	241	12	.	.	.
19395	242	1	Photographed	photograph	VBN
19395	242	2	with	with	IN
19395	242	3	the	the	DT
19395	242	4	60-inch	60-inch	CD
19395	242	5	telescope	telescope	NN
19395	242	6	.	.	.
19395	242	7	]	]	-RRB-
19395	243	1	Other	other	JJ
19395	243	2	arrangements	arrangement	NNS
19395	243	3	of	of	IN
19395	243	4	the	the	DT
19395	243	5	telescope	telescope	NN
19395	243	6	,	,	,
19395	243	7	for	for	IN
19395	243	8	which	which	WDT
19395	243	9	auxiliary	auxiliary	JJ
19395	243	10	convex	convex	NNP
19395	243	11	mirrors	mirror	NNS
19395	243	12	carried	carry	VBN
19395	243	13	near	near	IN
19395	243	14	the	the	DT
19395	243	15	upper	upper	JJ
19395	243	16	end	end	NN
19395	243	17	of	of	IN
19395	243	18	the	the	DT
19395	243	19	tube	tube	NN
19395	243	20	are	be	VBP
19395	243	21	required	require	VBN
19395	243	22	,	,	,
19395	243	23	permit	permit	VB
19395	243	24	the	the	DT
19395	243	25	image	image	NN
19395	243	26	to	to	TO
19395	243	27	be	be	VB
19395	243	28	photographed	photograph	VBN
19395	243	29	at	at	IN
19395	243	30	the	the	DT
19395	243	31	side	side	NN
19395	243	32	of	of	IN
19395	243	33	the	the	DT
19395	243	34	tube	tube	NN
19395	243	35	near	near	IN
19395	243	36	its	-PRON-	PRP$
19395	243	37	lower	low	JJR
19395	243	38	end	end	NN
19395	243	39	,	,	,
19395	243	40	either	either	CC
19395	243	41	with	with	IN
19395	243	42	or	or	CC
19395	243	43	without	without	IN
19395	243	44	a	a	DT
19395	243	45	spectrograph	spectrograph	NN
19395	243	46	;	;	:
19395	243	47	or	or	CC
19395	243	48	with	with	IN
19395	243	49	a	a	DT
19395	243	50	very	very	RB
19395	243	51	powerful	powerful	JJ
19395	243	52	spectrograph	spectrograph	NN
19395	243	53	mounted	mount	VBD
19395	243	54	within	within	IN
19395	243	55	a	a	DT
19395	243	56	constant	constant	JJ
19395	243	57	-	-	HYPH
19395	243	58	temperature	temperature	NN
19395	243	59	chamber	chamber	NN
19395	243	60	south	south	RB
19395	243	61	of	of	IN
19395	243	62	the	the	DT
19395	243	63	telescope	telescope	NN
19395	243	64	pier	pier	NN
19395	243	65	.	.	.
19395	244	1	In	in	IN
19395	244	2	this	this	DT
19395	244	3	last	last	JJ
19395	244	4	case	case	NN
19395	244	5	,	,	,
19395	244	6	the	the	DT
19395	244	7	light	light	NN
19395	244	8	of	of	IN
19395	244	9	a	a	DT
19395	244	10	star	star	NN
19395	244	11	is	be	VBZ
19395	244	12	so	so	RB
19395	244	13	reflected	reflect	VBN
19395	244	14	by	by	IN
19395	244	15	auxiliary	auxiliary	JJ
19395	244	16	mirrors	mirror	NNS
19395	244	17	that	that	IN
19395	244	18	it	-PRON-	PRP
19395	244	19	passes	pass	VBZ
19395	244	20	down	down	RP
19395	244	21	through	through	IN
19395	244	22	a	a	DT
19395	244	23	hole	hole	NN
19395	244	24	in	in	IN
19395	244	25	the	the	DT
19395	244	26	south	south	JJ
19395	244	27	end	end	NN
19395	244	28	of	of	IN
19395	244	29	the	the	DT
19395	244	30	polar	polar	JJ
19395	244	31	axis	axi	NNS
19395	244	32	and	and	CC
19395	244	33	brings	bring	VBZ
19395	244	34	the	the	DT
19395	244	35	star	star	NN
19395	244	36	to	to	IN
19395	244	37	a	a	DT
19395	244	38	focus	focus	NN
19395	244	39	on	on	IN
19395	244	40	the	the	DT
19395	244	41	slit	slit	NN
19395	244	42	of	of	IN
19395	244	43	the	the	DT
19395	244	44	fixed	fix	VBN
19395	244	45	spectrograph	spectrograph	NNP
19395	244	46	.	.	.
19395	245	1	ATMOSPHERIC	atmospheric	RB
19395	245	2	LIMITATIONS	limitations	JJ
19395	245	3	The	the	DT
19395	245	4	huge	huge	JJ
19395	245	5	dimensions	dimension	NNS
19395	245	6	of	of	IN
19395	245	7	such	such	PDT
19395	245	8	a	a	DT
19395	245	9	powerful	powerful	JJ
19395	245	10	engine	engine	NN
19395	245	11	of	of	IN
19395	245	12	research	research	NN
19395	245	13	as	as	IN
19395	245	14	the	the	DT
19395	245	15	Hooker	Hooker	NNP
19395	245	16	telescope	telescope	NN
19395	245	17	are	be	VBP
19395	245	18	not	not	RB
19395	245	19	in	in	IN
19395	245	20	themselves	-PRON-	PRP
19395	245	21	a	a	DT
19395	245	22	source	source	NN
19395	245	23	of	of	IN
19395	245	24	satisfaction	satisfaction	NN
19395	245	25	to	to	IN
19395	245	26	the	the	DT
19395	245	27	astronomer	astronomer	NN
19395	245	28	,	,	,
19395	245	29	for	for	IN
19395	245	30	they	-PRON-	PRP
19395	245	31	involve	involve	VBP
19395	245	32	a	a	DT
19395	245	33	decided	decided	JJ
19395	245	34	increase	increase	NN
19395	245	35	in	in	IN
19395	245	36	the	the	DT
19395	245	37	labor	labor	NN
19395	245	38	of	of	IN
19395	245	39	observation	observation	NN
19395	245	40	and	and	CC
19395	245	41	entail	entail	VB
19395	245	42	very	very	RB
19395	245	43	heavy	heavy	JJ
19395	245	44	expense	expense	NN
19395	245	45	,	,	,
19395	245	46	justifiable	justifiable	JJ
19395	245	47	only	only	RB
19395	245	48	in	in	IN
19395	245	49	case	case	NN
19395	245	50	important	important	JJ
19395	245	51	results	result	NNS
19395	245	52	,	,	,
19395	245	53	beyond	beyond	IN
19395	245	54	the	the	DT
19395	245	55	reach	reach	NN
19395	245	56	of	of	IN
19395	245	57	other	other	JJ
19395	245	58	instruments	instrument	NNS
19395	245	59	,	,	,
19395	245	60	can	can	MD
19395	245	61	be	be	VB
19395	245	62	secured	secure	VBN
19395	245	63	.	.	.
19395	246	1	The	the	DT
19395	246	2	construction	construction	NN
19395	246	3	of	of	IN
19395	246	4	a	a	DT
19395	246	5	telescope	telescope	NN
19395	246	6	of	of	IN
19395	246	7	these	these	DT
19395	246	8	dimensions	dimension	NNS
19395	246	9	was	be	VBD
19395	246	10	necessarily	necessarily	RB
19395	246	11	an	an	DT
19395	246	12	experiment	experiment	NN
19395	246	13	,	,	,
19395	246	14	for	for	IN
19395	246	15	it	-PRON-	PRP
19395	246	16	was	be	VBD
19395	246	17	by	by	IN
19395	246	18	no	no	DT
19395	246	19	means	mean	NNS
19395	246	20	certain	certain	JJ
19395	246	21	,	,	,
19395	246	22	after	after	IN
19395	246	23	the	the	DT
19395	246	24	optical	optical	JJ
19395	246	25	and	and	CC
19395	246	26	mechanical	mechanical	JJ
19395	246	27	difficulties	difficulty	NNS
19395	246	28	had	have	VBD
19395	246	29	been	be	VBN
19395	246	30	overcome	overcome	VBN
19395	246	31	,	,	,
19395	246	32	that	that	IN
19395	246	33	even	even	RB
19395	246	34	the	the	DT
19395	246	35	favorable	favorable	JJ
19395	246	36	atmosphere	atmosphere	NN
19395	246	37	of	of	IN
19395	246	38	California	California	NNP
19395	246	39	would	would	MD
19395	246	40	be	be	VB
19395	246	41	sufficiently	sufficiently	RB
19395	246	42	tranquil	tranquil	JJ
19395	246	43	to	to	TO
19395	246	44	permit	permit	VB
19395	246	45	sharply	sharply	RB
19395	246	46	defined	define	VBN
19395	246	47	celestial	celestial	JJ
19395	246	48	images	image	NNS
19395	246	49	to	to	TO
19395	246	50	be	be	VB
19395	246	51	obtained	obtain	VBN
19395	246	52	with	with	IN
19395	246	53	so	so	RB
19395	246	54	large	large	JJ
19395	246	55	an	an	DT
19395	246	56	aperture	aperture	NN
19395	246	57	.	.	.
19395	247	1	It	-PRON-	PRP
19395	247	2	is	be	VBZ
19395	247	3	therefore	therefore	RB
19395	247	4	important	important	JJ
19395	247	5	to	to	TO
19395	247	6	learn	learn	VB
19395	247	7	what	what	WP
19395	247	8	the	the	DT
19395	247	9	telescope	telescope	NN
19395	247	10	will	will	MD
19395	247	11	actually	actually	RB
19395	247	12	accomplish	accomplish	VB
19395	247	13	under	under	IN
19395	247	14	customary	customary	JJ
19395	247	15	observing	observing	NN
19395	247	16	conditions	condition	NNS
19395	247	17	.	.	.
19395	248	1	Fortunately	fortunately	RB
19395	248	2	we	-PRON-	PRP
19395	248	3	are	be	VBP
19395	248	4	able	able	JJ
19395	248	5	to	to	TO
19395	248	6	measure	measure	VB
19395	248	7	the	the	DT
19395	248	8	performance	performance	NN
19395	248	9	of	of	IN
19395	248	10	the	the	DT
19395	248	11	instrument	instrument	NN
19395	248	12	with	with	IN
19395	248	13	certainty	certainty	NN
19395	248	14	.	.	.
19395	249	1	Close	close	RB
19395	249	2	beside	beside	IN
19395	249	3	it	-PRON-	PRP
19395	249	4	on	on	IN
19395	249	5	Mount	Mount	NNP
19395	249	6	Wilson	Wilson	NNP
19395	249	7	stands	stand	VBZ
19395	249	8	the	the	DT
19395	249	9	60-inch	60-inch	CD
19395	249	10	reflector	reflector	NN
19395	249	11	,	,	,
19395	249	12	of	of	IN
19395	249	13	similar	similar	JJ
19395	249	14	type	type	NN
19395	249	15	,	,	,
19395	249	16	erected	erect	VBN
19395	249	17	in	in	IN
19395	249	18	1908	1908	CD
19395	249	19	.	.	.
19395	250	1	The	the	DT
19395	250	2	two	two	CD
19395	250	3	telescopes	telescope	NNS
19395	250	4	can	can	MD
19395	250	5	thus	thus	RB
19395	250	6	be	be	VB
19395	250	7	rigorously	rigorously	RB
19395	250	8	compared	compare	VBN
19395	250	9	under	under	IN
19395	250	10	identical	identical	JJ
19395	250	11	atmospheric	atmospheric	JJ
19395	250	12	conditions	condition	NNS
19395	250	13	.	.	.
19395	251	1	The	the	DT
19395	251	2	large	large	JJ
19395	251	3	mirror	mirror	NN
19395	251	4	of	of	IN
19395	251	5	the	the	DT
19395	251	6	100-inch	100-inch	CD
19395	251	7	telescope	telescope	NN
19395	251	8	has	have	VBZ
19395	251	9	an	an	DT
19395	251	10	area	area	NN
19395	251	11	about	about	RB
19395	251	12	2.8	2.8	CD
19395	251	13	times	time	NNS
19395	251	14	that	that	DT
19395	251	15	of	of	IN
19395	251	16	the	the	DT
19395	251	17	60-inch	60-inch	CD
19395	251	18	,	,	,
19395	251	19	and	and	CC
19395	251	20	therefore	therefore	RB
19395	251	21	receives	receive	VBZ
19395	251	22	nearly	nearly	RB
19395	251	23	three	three	CD
19395	251	24	times	time	NNS
19395	251	25	as	as	RB
19395	251	26	much	much	JJ
19395	251	27	light	light	NN
19395	251	28	from	from	IN
19395	251	29	a	a	DT
19395	251	30	star	star	NN
19395	251	31	.	.	.
19395	252	1	Under	under	IN
19395	252	2	atmospheric	atmospheric	JJ
19395	252	3	conditions	condition	NNS
19395	252	4	perfect	perfect	JJ
19395	252	5	enough	enough	RB
19395	252	6	to	to	TO
19395	252	7	allow	allow	VB
19395	252	8	all	all	DT
19395	252	9	of	of	IN
19395	252	10	this	this	DT
19395	252	11	light	light	NN
19395	252	12	to	to	TO
19395	252	13	be	be	VB
19395	252	14	concentrated	concentrate	VBN
19395	252	15	in	in	IN
19395	252	16	a	a	DT
19395	252	17	point	point	NN
19395	252	18	,	,	,
19395	252	19	it	-PRON-	PRP
19395	252	20	should	should	MD
19395	252	21	be	be	VB
19395	252	22	capable	capable	JJ
19395	252	23	of	of	IN
19395	252	24	recording	record	VBG
19395	252	25	on	on	IN
19395	252	26	a	a	DT
19395	252	27	photographic	photographic	JJ
19395	252	28	plate	plate	NN
19395	252	29	,	,	,
19395	252	30	with	with	IN
19395	252	31	a	a	DT
19395	252	32	given	give	VBN
19395	252	33	exposure	exposure	NN
19395	252	34	,	,	,
19395	252	35	stars	star	VBZ
19395	252	36	about	about	IN
19395	252	37	one	one	CD
19395	252	38	magnitude	magnitude	NN
19395	252	39	fainter	fainter	NN
19395	252	40	than	than	IN
19395	252	41	the	the	DT
19395	252	42	faintest	faint	JJS
19395	252	43	stars	star	NNS
19395	252	44	within	within	IN
19395	252	45	reach	reach	NN
19395	252	46	of	of	IN
19395	252	47	the	the	DT
19395	252	48	60-inch	60-inch	CD
19395	252	49	.	.	.
19395	253	1	The	the	DT
19395	253	2	increased	increased	JJ
19395	253	3	focal	focal	JJ
19395	253	4	length	length	NN
19395	253	5	,	,	,
19395	253	6	permitting	permit	VBG
19395	253	7	such	such	JJ
19395	253	8	objects	object	NNS
19395	253	9	as	as	IN
19395	253	10	the	the	DT
19395	253	11	moon	moon	NN
19395	253	12	to	to	TO
19395	253	13	be	be	VB
19395	253	14	photographed	photograph	VBN
19395	253	15	on	on	IN
19395	253	16	a	a	DT
19395	253	17	larger	large	JJR
19395	253	18	scale	scale	NN
19395	253	19	,	,	,
19395	253	20	should	should	MD
19395	253	21	also	also	RB
19395	253	22	reveal	reveal	VB
19395	253	23	smaller	small	JJR
19395	253	24	details	detail	NNS
19395	253	25	of	of	IN
19395	253	26	structure	structure	NN
19395	253	27	and	and	CC
19395	253	28	render	render	VB
19395	253	29	possible	possible	JJ
19395	253	30	higher	high	JJR
19395	253	31	accuracy	accuracy	NN
19395	253	32	of	of	IN
19395	253	33	measurement	measurement	NN
19395	253	34	.	.	.
19395	254	1	Finally	finally	RB
19395	254	2	,	,	,
19395	254	3	the	the	DT
19395	254	4	greater	great	JJR
19395	254	5	theoretical	theoretical	JJ
19395	254	6	resolving	resolve	VBG
19395	254	7	power	power	NN
19395	254	8	of	of	IN
19395	254	9	the	the	DT
19395	254	10	larger	large	JJR
19395	254	11	aperture	aperture	NN
19395	254	12	,	,	,
19395	254	13	providing	provide	VBG
19395	254	14	it	-PRON-	PRP
19395	254	15	can	can	MD
19395	254	16	be	be	VB
19395	254	17	utilized	utilize	VBN
19395	254	18	,	,	,
19395	254	19	should	should	MD
19395	254	20	permit	permit	VB
19395	254	21	the	the	DT
19395	254	22	separation	separation	NN
19395	254	23	of	of	IN
19395	254	24	the	the	DT
19395	254	25	members	member	NNS
19395	254	26	of	of	IN
19395	254	27	close	close	JJ
19395	254	28	double	double	JJ
19395	254	29	stars	star	NNS
19395	254	30	beyond	beyond	IN
19395	254	31	the	the	DT
19395	254	32	range	range	NN
19395	254	33	of	of	IN
19395	254	34	the	the	DT
19395	254	35	smaller	small	JJR
19395	254	36	instrument	instrument	NN
19395	254	37	.	.	.
19395	255	1	CRITICAL	CRITICAL	NNP
19395	255	2	TESTS	TESTS	NNP
19395	255	3	The	the	DT
19395	255	4	many	many	JJ
19395	255	5	tests	test	NNS
19395	255	6	already	already	RB
19395	255	7	made	make	VBD
19395	255	8	indicate	indicate	JJ
19395	255	9	that	that	IN
19395	255	10	the	the	DT
19395	255	11	advantages	advantage	NNS
19395	255	12	expected	expect	VBN
19395	255	13	of	of	IN
19395	255	14	the	the	DT
19395	255	15	new	new	JJ
19395	255	16	telescope	telescope	NN
19395	255	17	will	will	MD
19395	255	18	be	be	VB
19395	255	19	realized	realize	VBN
19395	255	20	in	in	IN
19395	255	21	practice	practice	NN
19395	255	22	.	.	.
19395	256	1	The	the	DT
19395	256	2	increased	increase	VBN
19395	256	3	light	light	NN
19395	256	4	-	-	HYPH
19395	256	5	gathering	gather	VBG
19395	256	6	power	power	NN
19395	256	7	will	will	MD
19395	256	8	mean	mean	VB
19395	256	9	the	the	DT
19395	256	10	addition	addition	NN
19395	256	11	of	of	IN
19395	256	12	many	many	JJ
19395	256	13	millions	million	NNS
19395	256	14	of	of	IN
19395	256	15	stars	star	NNS
19395	256	16	to	to	IN
19395	256	17	those	those	DT
19395	256	18	already	already	RB
19395	256	19	known	know	VBN
19395	256	20	.	.	.
19395	257	1	Spectroscopic	spectroscopic	JJ
19395	257	2	observations	observation	NNS
19395	257	3	now	now	RB
19395	257	4	in	in	IN
19395	257	5	regular	regular	JJ
19395	257	6	progress	progress	NN
19395	257	7	have	have	VBP
19395	257	8	carried	carry	VBN
19395	257	9	the	the	DT
19395	257	10	range	range	NN
19395	257	11	of	of	IN
19395	257	12	these	these	DT
19395	257	13	investigations	investigation	NNS
19395	257	14	far	far	RB
19395	257	15	beyond	beyond	IN
19395	257	16	the	the	DT
19395	257	17	possibilities	possibility	NNS
19395	257	18	of	of	IN
19395	257	19	the	the	DT
19395	257	20	60-inch	60-inch	CD
19395	257	21	telescope	telescope	NN
19395	257	22	.	.	.
19395	258	1	A	a	DT
19395	258	2	great	great	JJ
19395	258	3	class	class	NN
19395	258	4	of	of	IN
19395	258	5	red	red	JJ
19395	258	6	stars	star	NNS
19395	258	7	,	,	,
19395	258	8	for	for	IN
19395	258	9	example	example	NN
19395	258	10	,	,	,
19395	258	11	almost	almost	RB
19395	258	12	all	all	PDT
19395	258	13	the	the	DT
19395	258	14	members	member	NNS
19395	258	15	of	of	IN
19395	258	16	which	which	WDT
19395	258	17	were	be	VBD
19395	258	18	inaccessible	inaccessible	JJ
19395	258	19	to	to	IN
19395	258	20	the	the	DT
19395	258	21	60-inch	60-inch	CD
19395	258	22	,	,	,
19395	258	23	are	be	VBP
19395	258	24	now	now	RB
19395	258	25	being	be	VBG
19395	258	26	made	make	VBN
19395	258	27	the	the	DT
19395	258	28	subject	subject	NN
19395	258	29	of	of	IN
19395	258	30	special	special	JJ
19395	258	31	study	study	NN
19395	258	32	.	.	.
19395	259	1	And	and	CC
19395	259	2	in	in	IN
19395	259	3	other	other	JJ
19395	259	4	fields	field	NNS
19395	259	5	of	of	IN
19395	259	6	research	research	NN
19395	259	7	equal	equal	JJ
19395	259	8	advantages	advantage	NNS
19395	259	9	have	have	VBP
19395	259	10	been	be	VBN
19395	259	11	gained	gain	VBN
19395	259	12	.	.	.
19395	260	1	The	the	DT
19395	260	2	increase	increase	NN
19395	260	3	in	in	IN
19395	260	4	the	the	DT
19395	260	5	scale	scale	NN
19395	260	6	of	of	IN
19395	260	7	the	the	DT
19395	260	8	images	image	NNS
19395	260	9	over	over	IN
19395	260	10	those	those	DT
19395	260	11	given	give	VBN
19395	260	12	by	by	IN
19395	260	13	the	the	DT
19395	260	14	60-inch	60-inch	CD
19395	260	15	telescope	telescope	NN
19395	260	16	is	be	VBZ
19395	260	17	illustrated	illustrate	VBN
19395	260	18	by	by	IN
19395	260	19	two	two	CD
19395	260	20	photographs	photograph	NNS
19395	260	21	of	of	IN
19395	260	22	the	the	DT
19395	260	23	Ring	Ring	NNP
19395	260	24	Nebula	Nebula	NNP
19395	260	25	in	in	IN
19395	260	26	Lyra	Lyra	NNP
19395	260	27	,	,	,
19395	260	28	reproduced	reproduce	VBN
19395	260	29	in	in	IN
19395	260	30	Fig	Fig	NNP
19395	260	31	.	.	.
19395	261	1	18	18	CD
19395	261	2	.	.	.
19395	262	1	The	the	DT
19395	262	2	Great	Great	NNP
19395	262	3	Nebula	Nebula	NNP
19395	262	4	in	in	IN
19395	262	5	Orion	Orion	NNP
19395	262	6	,	,	,
19395	262	7	photographed	photograph	VBN
19395	262	8	with	with	IN
19395	262	9	the	the	DT
19395	262	10	100-inch	100-inch	CD
19395	262	11	telescope	telescope	NN
19395	262	12	with	with	IN
19395	262	13	a	a	DT
19395	262	14	comparatively	comparatively	RB
19395	262	15	short	short	JJ
19395	262	16	exposure	exposure	NN
19395	262	17	,	,	,
19395	262	18	sufficient	sufficient	JJ
19395	262	19	to	to	TO
19395	262	20	bring	bring	VB
19395	262	21	out	out	RP
19395	262	22	the	the	DT
19395	262	23	brighter	bright	JJR
19395	262	24	regions	region	NNS
19395	262	25	,	,	,
19395	262	26	is	be	VBZ
19395	262	27	reproduced	reproduce	VBN
19395	262	28	in	in	IN
19395	262	29	Fig	Fig	NNP
19395	262	30	.	.	.
19395	263	1	2	2	LS
19395	263	2	.	.	.
19395	264	1	It	-PRON-	PRP
19395	264	2	is	be	VBZ
19395	264	3	interesting	interesting	JJ
19395	264	4	to	to	TO
19395	264	5	compare	compare	VB
19395	264	6	this	this	DT
19395	264	7	picture	picture	NN
19395	264	8	with	with	IN
19395	264	9	the	the	DT
19395	264	10	small	small	JJ
19395	264	11	-	-	HYPH
19395	264	12	scale	scale	NN
19395	264	13	image	image	NN
19395	264	14	of	of	IN
19395	264	15	the	the	DT
19395	264	16	same	same	JJ
19395	264	17	nebula	nebula	NN
19395	264	18	shown	show	VBN
19395	264	19	in	in	IN
19395	264	20	Fig	Fig	NNP
19395	264	21	.	.	.
19395	265	1	1	1	LS
19395	265	2	.	.	.
19395	266	1	[	[	-LRB-
19395	266	2	Illustration	illustration	NN
19395	266	3	:	:	:
19395	266	4	Fig	Fig	NNP
19395	266	5	.	.	.
19395	267	1	15	15	CD
19395	267	2	.	.	.
19395	268	1	Photograph	Photograph	NNP
19395	268	2	of	of	IN
19395	268	3	the	the	DT
19395	268	4	moon	moon	NN
19395	268	5	made	make	VBN
19395	268	6	on	on	IN
19395	268	7	September	September	NNP
19395	268	8	15	15	CD
19395	268	9	,	,	,
19395	268	10	1919	1919	CD
19395	268	11	,	,	,
19395	268	12	with	with	IN
19395	268	13	the	the	DT
19395	268	14	100-inch	100-inch	CD
19395	268	15	Hooker	Hooker	NNP
19395	268	16	telescope	telescope	NN
19395	268	17	(	(	-LRB-
19395	268	18	Pease	Pease	NNP
19395	268	19	)	)	-RRB-
19395	268	20	.	.	.
19395	269	1	The	the	DT
19395	269	2	ring	ring	NN
19395	269	3	-	-	HYPH
19395	269	4	like	like	JJ
19395	269	5	formations	formation	NNS
19395	269	6	are	be	VBP
19395	269	7	the	the	DT
19395	269	8	so	so	RB
19395	269	9	-	-	HYPH
19395	269	10	called	call	VBN
19395	269	11	craters	crater	NNS
19395	269	12	,	,	,
19395	269	13	most	most	JJS
19395	269	14	of	of	IN
19395	269	15	them	-PRON-	PRP
19395	269	16	far	far	RB
19395	269	17	larger	large	JJR
19395	269	18	than	than	IN
19395	269	19	anything	anything	NN
19395	269	20	similar	similar	JJ
19395	269	21	on	on	IN
19395	269	22	the	the	DT
19395	269	23	earth	earth	NN
19395	269	24	.	.	.
19395	270	1	That	that	IN
19395	270	2	in	in	IN
19395	270	3	the	the	DT
19395	270	4	lower	low	JJR
19395	270	5	left	left	JJ
19395	270	6	corner	corner	NN
19395	270	7	with	with	IN
19395	270	8	an	an	DT
19395	270	9	isolated	isolate	VBN
19395	270	10	mountain	mountain	NN
19395	270	11	in	in	IN
19395	270	12	the	the	DT
19395	270	13	centre	centre	NN
19395	270	14	is	be	VBZ
19395	270	15	Albategnius	Albategnius	NNP
19395	270	16	,	,	,
19395	270	17	sixty	sixty	CD
19395	270	18	-	-	HYPH
19395	270	19	four	four	CD
19395	270	20	miles	mile	NNS
19395	270	21	in	in	IN
19395	270	22	diameter	diameter	NN
19395	270	23	.	.	.
19395	271	1	Peaks	peak	NNS
19395	271	2	in	in	IN
19395	271	3	the	the	DT
19395	271	4	ring	ring	NN
19395	271	5	rise	rise	NN
19395	271	6	to	to	IN
19395	271	7	a	a	DT
19395	271	8	height	height	NN
19395	271	9	of	of	IN
19395	271	10	fifteen	fifteen	CD
19395	271	11	thousand	thousand	CD
19395	271	12	feet	foot	NNS
19395	271	13	above	above	IN
19395	271	14	the	the	DT
19395	271	15	central	central	JJ
19395	271	16	plain	plain	NN
19395	271	17	.	.	.
19395	272	1	Note	note	VB
19395	272	2	the	the	DT
19395	272	3	long	long	JJ
19395	272	4	sunset	sunset	NN
19395	272	5	shadows	shadow	NNS
19395	272	6	cast	cast	VBN
19395	272	7	by	by	IN
19395	272	8	the	the	DT
19395	272	9	mountains	mountain	NNS
19395	272	10	on	on	IN
19395	272	11	the	the	DT
19395	272	12	left	left	NN
19395	272	13	.	.	.
19395	273	1	The	the	DT
19395	273	2	level	level	NN
19395	273	3	region	region	NN
19395	273	4	below	below	IN
19395	273	5	on	on	IN
19395	273	6	the	the	DT
19395	273	7	right	right	NN
19395	273	8	is	be	VBZ
19395	273	9	an	an	DT
19395	273	10	extensive	extensive	JJ
19395	273	11	plain	plain	NN
19395	273	12	,	,	,
19395	273	13	the	the	DT
19395	273	14	Mare	Mare	NNP
19395	273	15	Nubium	Nubium	NNP
19395	273	16	.	.	.
19395	273	17	]	]	-RRB-
19395	274	1	[	[	-LRB-
19395	274	2	Illustration	illustration	NN
19395	274	3	:	:	:
19395	274	4	Fig	Fig	NNP
19395	274	5	.	.	.
19395	275	1	16	16	CD
19395	275	2	.	.	.
19395	276	1	Photograph	Photograph	NNP
19395	276	2	of	of	IN
19395	276	3	the	the	DT
19395	276	4	moon	moon	NN
19395	276	5	made	make	VBN
19395	276	6	on	on	IN
19395	276	7	September	September	NNP
19395	276	8	15	15	CD
19395	276	9	,	,	,
19395	276	10	1919	1919	CD
19395	276	11	,	,	,
19395	276	12	with	with	IN
19395	276	13	the	the	DT
19395	276	14	100-inch	100-inch	CD
19395	276	15	Hooker	Hooker	NNP
19395	276	16	telescope	telescope	NN
19395	276	17	(	(	-LRB-
19395	276	18	Pease	Pease	NNP
19395	276	19	)	)	-RRB-
19395	276	20	.	.	.
19395	277	1	The	the	DT
19395	277	2	mountains	mountain	NNS
19395	277	3	above	above	RB
19395	277	4	and	and	CC
19395	277	5	to	to	IN
19395	277	6	the	the	DT
19395	277	7	left	left	NN
19395	277	8	are	be	VBP
19395	277	9	the	the	DT
19395	277	10	lunar	lunar	JJ
19395	277	11	Apennines	Apennines	NNPS
19395	277	12	;	;	:
19395	277	13	those	those	DT
19395	277	14	on	on	IN
19395	277	15	the	the	DT
19395	277	16	left	left	NN
19395	277	17	just	just	RB
19395	277	18	below	below	IN
19395	277	19	the	the	DT
19395	277	20	centre	centre	NN
19395	277	21	are	be	VBP
19395	277	22	the	the	DT
19395	277	23	Alps	Alps	NNPS
19395	277	24	.	.	.
19395	278	1	Both	both	DT
19395	278	2	ranges	range	NNS
19395	278	3	include	include	VBP
19395	278	4	peaks	peak	NNS
19395	278	5	from	from	IN
19395	278	6	fifteen	fifteen	CD
19395	278	7	thousand	thousand	CD
19395	278	8	to	to	TO
19395	278	9	twenty	twenty	CD
19395	278	10	thousand	thousand	CD
19395	278	11	feet	foot	NNS
19395	278	12	in	in	IN
19395	278	13	height	height	NN
19395	278	14	.	.	.
19395	279	1	In	in	IN
19395	279	2	the	the	DT
19395	279	3	upper	upper	JJ
19395	279	4	right	right	JJ
19395	279	5	corner	corner	NN
19395	279	6	is	be	VBZ
19395	279	7	Copernicus	Copernicus	NNP
19395	279	8	,	,	,
19395	279	9	about	about	RB
19395	279	10	fifty	fifty	CD
19395	279	11	miles	mile	NNS
19395	279	12	in	in	IN
19395	279	13	diameter	diameter	NN
19395	279	14	.	.	.
19395	280	1	The	the	DT
19395	280	2	largest	large	JJS
19395	280	3	of	of	IN
19395	280	4	the	the	DT
19395	280	5	conspicuous	conspicuous	JJ
19395	280	6	group	group	NN
19395	280	7	of	of	IN
19395	280	8	three	three	CD
19395	280	9	just	just	RB
19395	280	10	below	below	IN
19395	280	11	the	the	DT
19395	280	12	Apennines	Apennines	NNPS
19395	280	13	is	be	VBZ
19395	280	14	Archimedes	Archimedes	NNP
19395	280	15	and	and	CC
19395	280	16	at	at	IN
19395	280	17	the	the	DT
19395	280	18	lower	low	JJR
19395	280	19	end	end	NN
19395	280	20	of	of	IN
19395	280	21	the	the	DT
19395	280	22	Alps	Alps	NNPS
19395	280	23	is	be	VBZ
19395	280	24	Plato	Plato	NNP
19395	280	25	.	.	.
19395	281	1	Note	note	VB
19395	281	2	the	the	DT
19395	281	3	long	long	JJ
19395	281	4	sunset	sunset	NN
19395	281	5	shadows	shadow	NNS
19395	281	6	cast	cast	VBN
19395	281	7	by	by	IN
19395	281	8	the	the	DT
19395	281	9	isolated	isolated	JJ
19395	281	10	peaks	peak	NNS
19395	281	11	on	on	IN
19395	281	12	the	the	DT
19395	281	13	left	left	NN
19395	281	14	.	.	.
19395	282	1	The	the	DT
19395	282	2	central	central	JJ
19395	282	3	portion	portion	NN
19395	282	4	of	of	IN
19395	282	5	the	the	DT
19395	282	6	picture	picture	NN
19395	282	7	is	be	VBZ
19395	282	8	a	a	DT
19395	282	9	vast	vast	JJ
19395	282	10	plain	plain	NN
19395	282	11	,	,	,
19395	282	12	the	the	DT
19395	282	13	Mare	Mare	NNP
19395	282	14	Imbrium	Imbrium	NNP
19395	282	15	.	.	.
19395	282	16	]	]	-RRB-
19395	283	1	The	the	DT
19395	283	2	sharpness	sharpness	NN
19395	283	3	of	of	IN
19395	283	4	the	the	DT
19395	283	5	images	image	NNS
19395	283	6	given	give	VBN
19395	283	7	by	by	IN
19395	283	8	the	the	DT
19395	283	9	new	new	JJ
19395	283	10	telescope	telescope	NN
19395	283	11	may	may	MD
19395	283	12	be	be	VB
19395	283	13	illustrated	illustrate	VBN
19395	283	14	by	by	IN
19395	283	15	some	some	DT
19395	283	16	recent	recent	JJ
19395	283	17	photographs	photograph	NNS
19395	283	18	of	of	IN
19395	283	19	the	the	DT
19395	283	20	moon	moon	NN
19395	283	21	,	,	,
19395	283	22	obtained	obtain	VBN
19395	283	23	with	with	IN
19395	283	24	an	an	DT
19395	283	25	equivalent	equivalent	JJ
19395	283	26	focal	focal	JJ
19395	283	27	length	length	NN
19395	283	28	of	of	IN
19395	283	29	134	134	CD
19395	283	30	feet	foot	NNS
19395	283	31	.	.	.
19395	284	1	In	in	IN
19395	284	2	Fig	Fig	NNP
19395	284	3	.	.	.
19395	285	1	15	15	CD
19395	285	2	is	be	VBZ
19395	285	3	shown	show	VBN
19395	285	4	a	a	DT
19395	285	5	rugged	rugged	JJ
19395	285	6	region	region	NN
19395	285	7	of	of	IN
19395	285	8	the	the	DT
19395	285	9	moon	moon	NN
19395	285	10	,	,	,
19395	285	11	containing	contain	VBG
19395	285	12	many	many	JJ
19395	285	13	ring	ring	NN
19395	285	14	-	-	HYPH
19395	285	15	like	like	JJ
19395	285	16	mountains	mountain	NNS
19395	285	17	or	or	CC
19395	285	18	craters	crater	NNS
19395	285	19	.	.	.
19395	286	1	Fig	fig	NN
19395	286	2	.	.	.
19395	287	1	16	16	CD
19395	287	2	shows	show	VBZ
19395	287	3	the	the	DT
19395	287	4	great	great	JJ
19395	287	5	arc	arc	NN
19395	287	6	of	of	IN
19395	287	7	the	the	DT
19395	287	8	lunar	lunar	JJ
19395	287	9	Apennines	Apennines	NNPS
19395	287	10	(	(	-LRB-
19395	287	11	above	above	RB
19395	287	12	)	)	-RRB-
19395	287	13	and	and	CC
19395	287	14	the	the	DT
19395	287	15	Alps	Alps	NNPS
19395	287	16	(	(	-LRB-
19395	287	17	below	below	RB
19395	287	18	)	)	-RRB-
19395	287	19	,	,	,
19395	287	20	to	to	IN
19395	287	21	the	the	DT
19395	287	22	left	left	NN
19395	287	23	of	of	IN
19395	287	24	the	the	DT
19395	287	25	broad	broad	JJ
19395	287	26	plain	plain	NN
19395	287	27	of	of	IN
19395	287	28	the	the	DT
19395	287	29	Mare	Mare	NNP
19395	287	30	Imbrium	Imbrium	NNP
19395	287	31	.	.	.
19395	288	1	The	the	DT
19395	288	2	starlike	starlike	NN
19395	288	3	points	point	NNS
19395	288	4	along	along	IN
19395	288	5	the	the	DT
19395	288	6	moon	moon	NN
19395	288	7	's	's	POS
19395	288	8	terminator	terminator	NN
19395	288	9	,	,	,
19395	288	10	which	which	WDT
19395	288	11	separates	separate	VBZ
19395	288	12	the	the	DT
19395	288	13	dark	dark	JJ
19395	288	14	area	area	NN
19395	288	15	from	from	IN
19395	288	16	the	the	DT
19395	288	17	region	region	NN
19395	288	18	upon	upon	IN
19395	288	19	which	which	WDT
19395	288	20	the	the	DT
19395	288	21	sun	sun	NN
19395	288	22	(	(	-LRB-
19395	288	23	on	on	IN
19395	288	24	the	the	DT
19395	288	25	right	right	NN
19395	288	26	)	)	-RRB-
19395	288	27	shines	shine	NNS
19395	288	28	,	,	,
19395	288	29	are	be	VBP
19395	288	30	the	the	DT
19395	288	31	mountain	mountain	NN
19395	288	32	peaks	peak	NNS
19395	288	33	,	,	,
19395	288	34	about	about	IN
19395	288	35	to	to	TO
19395	288	36	disappear	disappear	VB
19395	288	37	at	at	IN
19395	288	38	sunset	sunset	NN
19395	288	39	.	.	.
19395	289	1	The	the	DT
19395	289	2	long	long	JJ
19395	289	3	shadows	shadow	NNS
19395	289	4	cast	cast	VBN
19395	289	5	by	by	IN
19395	289	6	the	the	DT
19395	289	7	mountains	mountain	NNS
19395	289	8	just	just	RB
19395	289	9	within	within	IN
19395	289	10	the	the	DT
19395	289	11	illuminated	illuminated	JJ
19395	289	12	area	area	NN
19395	289	13	are	be	VBP
19395	289	14	plainly	plainly	RB
19395	289	15	seen	see	VBN
19395	289	16	.	.	.
19395	290	1	Some	some	DT
19395	290	2	of	of	IN
19395	290	3	the	the	DT
19395	290	4	peaks	peak	NNS
19395	290	5	of	of	IN
19395	290	6	the	the	DT
19395	290	7	lunar	lunar	JJ
19395	290	8	Apennines	Apennines	NNPS
19395	290	9	attain	attain	VBP
19395	290	10	a	a	DT
19395	290	11	height	height	NN
19395	290	12	of	of	IN
19395	290	13	20,000	20,000	CD
19395	290	14	feet	foot	NNS
19395	290	15	.	.	.
19395	291	1	In	in	IN
19395	291	2	less	less	RBR
19395	291	3	powerful	powerful	JJ
19395	291	4	telescopes	telescope	NNS
19395	291	5	the	the	DT
19395	291	6	stars	star	NNS
19395	291	7	at	at	IN
19395	291	8	the	the	DT
19395	291	9	centre	centre	NN
19395	291	10	of	of	IN
19395	291	11	the	the	DT
19395	291	12	great	great	JJ
19395	291	13	globular	globular	JJ
19395	291	14	clusters	cluster	NNS
19395	291	15	are	be	VBP
19395	291	16	so	so	RB
19395	291	17	closely	closely	RB
19395	291	18	crowded	crowded	JJ
19395	291	19	together	together	RB
19395	291	20	that	that	IN
19395	291	21	they	-PRON-	PRP
19395	291	22	can	can	MD
19395	291	23	not	not	RB
19395	291	24	be	be	VB
19395	291	25	studied	study	VBN
19395	291	26	separately	separately	RB
19395	291	27	with	with	IN
19395	291	28	the	the	DT
19395	291	29	spectrograph	spectrograph	NN
19395	291	30	.	.	.
19395	292	1	Moreover	moreover	RB
19395	292	2	,	,	,
19395	292	3	most	most	JJS
19395	292	4	of	of	IN
19395	292	5	them	-PRON-	PRP
19395	292	6	are	be	VBP
19395	292	7	much	much	RB
19395	292	8	too	too	RB
19395	292	9	faint	faint	JJ
19395	292	10	for	for	IN
19395	292	11	examination	examination	NN
19395	292	12	with	with	IN
19395	292	13	this	this	DT
19395	292	14	instrument	instrument	NN
19395	292	15	.	.	.
19395	293	1	At	at	IN
19395	293	2	the	the	DT
19395	293	3	134-foot	134-foot	CD
19395	293	4	focus	focus	NN
19395	293	5	the	the	DT
19395	293	6	100-inch	100-inch	CD
19395	293	7	telescope	telescope	NN
19395	293	8	gives	give	VBZ
19395	293	9	a	a	DT
19395	293	10	large	large	JJ
19395	293	11	-	-	HYPH
19395	293	12	scale	scale	NN
19395	293	13	image	image	NN
19395	293	14	of	of	IN
19395	293	15	such	such	JJ
19395	293	16	clusters	cluster	NNS
19395	293	17	,	,	,
19395	293	18	and	and	CC
19395	293	19	permits	permit	VBZ
19395	293	20	the	the	DT
19395	293	21	spectra	spectra	NN
19395	293	22	of	of	IN
19395	293	23	stars	star	NNS
19395	293	24	as	as	RB
19395	293	25	faint	faint	JJ
19395	293	26	as	as	IN
19395	293	27	the	the	DT
19395	293	28	fifteenth	fifteenth	JJ
19395	293	29	magnitude	magnitude	NN
19395	293	30	to	to	TO
19395	293	31	be	be	VB
19395	293	32	separately	separately	RB
19395	293	33	photographed	photograph	VBN
19395	293	34	.	.	.
19395	294	1	[	[	-LRB-
19395	294	2	Illustration	illustration	NN
19395	294	3	:	:	:
19395	294	4	Fig	Fig	NNP
19395	294	5	.	.	.
19395	295	1	17	17	CD
19395	295	2	.	.	.
19395	296	1	Hubble	Hubble	NNP
19395	296	2	's	's	POS
19395	296	3	Variable	Variable	NNP
19395	296	4	Nebula	Nebula	NNP
19395	296	5	.	.	.
19395	297	1	One	one	CD
19395	297	2	of	of	IN
19395	297	3	the	the	DT
19395	297	4	few	few	JJ
19395	297	5	nebulæ	nebulæ	NNS
19395	297	6	known	know	VBN
19395	297	7	to	to	TO
19395	297	8	vary	vary	VB
19395	297	9	in	in	IN
19395	297	10	brightness	brightness	NN
19395	297	11	and	and	CC
19395	297	12	form	form	NN
19395	297	13	.	.	.
19395	298	1	Photographed	photograph	VBN
19395	298	2	with	with	IN
19395	298	3	the	the	DT
19395	298	4	100-inch	100-inch	CD
19395	298	5	telescope	telescope	NN
19395	298	6	(	(	-LRB-
19395	298	7	Hubble	Hubble	NNP
19395	298	8	)	)	-RRB-
19395	298	9	.	.	.
19395	298	10	]	]	-RRB-
19395	299	1	CLOSE	close	JJ
19395	299	2	DOUBLE	double	NN
19395	299	3	STARS	star	NNS
19395	299	4	A	a	DT
19395	299	5	remarkable	remarkable	JJ
19395	299	6	use	use	NN
19395	299	7	of	of	IN
19395	299	8	the	the	DT
19395	299	9	100-inch	100-inch	CD
19395	299	10	telescope	telescope	NN
19395	299	11	,	,	,
19395	299	12	which	which	WDT
19395	299	13	permits	permit	VBZ
19395	299	14	its	-PRON-	PRP$
19395	299	15	full	full	JJ
19395	299	16	theoretical	theoretical	JJ
19395	299	17	resolving	resolve	VBG
19395	299	18	power	power	NN
19395	299	19	to	to	TO
19395	299	20	be	be	VB
19395	299	21	not	not	RB
19395	299	22	merely	merely	RB
19395	299	23	attained	attain	VBN
19395	299	24	but	but	CC
19395	299	25	to	to	TO
19395	299	26	be	be	VB
19395	299	27	doubled	double	VBN
19395	299	28	,	,	,
19395	299	29	has	have	VBZ
19395	299	30	been	be	VBN
19395	299	31	made	make	VBN
19395	299	32	possible	possible	JJ
19395	299	33	by	by	IN
19395	299	34	the	the	DT
19395	299	35	first	first	JJ
19395	299	36	application	application	NN
19395	299	37	of	of	IN
19395	299	38	Michelson	Michelson	NNP
19395	299	39	's	's	POS
19395	299	40	interference	interference	NN
19395	299	41	method	method	NN
19395	299	42	to	to	IN
19395	299	43	the	the	DT
19395	299	44	measurement	measurement	NN
19395	299	45	of	of	IN
19395	299	46	very	very	RB
19395	299	47	close	close	JJ
19395	299	48	double	double	JJ
19395	299	49	stars	star	NNS
19395	299	50	.	.	.
19395	300	1	When	when	WRB
19395	300	2	employing	employ	VBG
19395	300	3	this	this	DT
19395	300	4	,	,	,
19395	300	5	the	the	DT
19395	300	6	100-inch	100-inch	CD
19395	300	7	mirror	mirror	NN
19395	300	8	is	be	VBZ
19395	300	9	completely	completely	RB
19395	300	10	covered	cover	VBN
19395	300	11	,	,	,
19395	300	12	except	except	IN
19395	300	13	for	for	IN
19395	300	14	two	two	CD
19395	300	15	slits	slit	NNS
19395	300	16	.	.	.
19395	301	1	Beams	beam	NNS
19395	301	2	of	of	IN
19395	301	3	light	light	NN
19395	301	4	from	from	IN
19395	301	5	a	a	DT
19395	301	6	star	star	NN
19395	301	7	,	,	,
19395	301	8	entering	enter	VBG
19395	301	9	by	by	IN
19395	301	10	the	the	DT
19395	301	11	slits	slit	NNS
19395	301	12	,	,	,
19395	301	13	unite	unite	VB
19395	301	14	at	at	IN
19395	301	15	the	the	DT
19395	301	16	focus	focus	NN
19395	301	17	of	of	IN
19395	301	18	the	the	DT
19395	301	19	telescope	telescope	NN
19395	301	20	,	,	,
19395	301	21	where	where	WRB
19395	301	22	the	the	DT
19395	301	23	image	image	NN
19395	301	24	is	be	VBZ
19395	301	25	examined	examine	VBN
19395	301	26	by	by	IN
19395	301	27	an	an	DT
19395	301	28	eyepiece	eyepiece	NN
19395	301	29	magnifying	magnify	VBG
19395	301	30	about	about	RB
19395	301	31	five	five	CD
19395	301	32	thousand	thousand	CD
19395	301	33	diameters	diameter	NNS
19395	301	34	.	.	.
19395	302	1	Across	across	IN
19395	302	2	the	the	DT
19395	302	3	enlarged	enlarged	JJ
19395	302	4	star	star	NN
19395	302	5	image	image	NN
19395	302	6	a	a	DT
19395	302	7	series	series	NN
19395	302	8	of	of	IN
19395	302	9	fine	fine	JJ
19395	302	10	,	,	,
19395	302	11	sharp	sharp	JJ
19395	302	12	fringes	fringe	NNS
19395	302	13	is	be	VBZ
19395	302	14	seen	see	VBN
19395	302	15	,	,	,
19395	302	16	even	even	RB
19395	302	17	when	when	WRB
19395	302	18	the	the	DT
19395	302	19	atmospheric	atmospheric	JJ
19395	302	20	conditions	condition	NNS
19395	302	21	are	be	VBP
19395	302	22	poor	poor	JJ
19395	302	23	.	.	.
19395	303	1	If	if	IN
19395	303	2	the	the	DT
19395	303	3	star	star	NN
19395	303	4	is	be	VBZ
19395	303	5	single	single	JJ
19395	303	6	the	the	DT
19395	303	7	fringes	fringe	NNS
19395	303	8	remain	remain	VBP
19395	303	9	visible	visible	JJ
19395	303	10	,	,	,
19395	303	11	whatever	whatever	WDT
19395	303	12	the	the	DT
19395	303	13	distance	distance	NN
19395	303	14	between	between	IN
19395	303	15	the	the	DT
19395	303	16	slits	slit	NNS
19395	303	17	.	.	.
19395	304	1	But	but	CC
19395	304	2	in	in	IN
19395	304	3	the	the	DT
19395	304	4	case	case	NN
19395	304	5	of	of	IN
19395	304	6	a	a	DT
19395	304	7	star	star	NN
19395	304	8	like	like	IN
19395	304	9	Capella	Capella	NNP
19395	304	10	,	,	,
19395	304	11	previously	previously	RB
19395	304	12	inferred	infer	VBD
19395	304	13	to	to	TO
19395	304	14	be	be	VB
19395	304	15	double	double	JJ
19395	304	16	from	from	IN
19395	304	17	the	the	DT
19395	304	18	periodic	periodic	JJ
19395	304	19	displacement	displacement	NN
19395	304	20	of	of	IN
19395	304	21	the	the	DT
19395	304	22	lines	line	NNS
19395	304	23	in	in	IN
19395	304	24	its	-PRON-	PRP$
19395	304	25	spectrum	spectrum	NN
19395	304	26	,	,	,
19395	304	27	but	but	CC
19395	304	28	with	with	IN
19395	304	29	components	component	NNS
19395	304	30	too	too	RB
19395	304	31	close	close	RB
19395	304	32	together	together	RB
19395	304	33	to	to	TO
19395	304	34	be	be	VB
19395	304	35	distinguished	distinguish	VBN
19395	304	36	separately	separately	RB
19395	304	37	,	,	,
19395	304	38	the	the	DT
19395	304	39	fringes	fringe	NNS
19395	304	40	behave	behave	VBP
19395	304	41	differently	differently	RB
19395	304	42	.	.	.
19395	305	1	As	as	IN
19395	305	2	the	the	DT
19395	305	3	slits	slit	NNS
19395	305	4	are	be	VBP
19395	305	5	moved	move	VBN
19395	305	6	apart	apart	RB
19395	305	7	a	a	DT
19395	305	8	point	point	NN
19395	305	9	is	be	VBZ
19395	305	10	reached	reach	VBN
19395	305	11	where	where	WRB
19395	305	12	the	the	DT
19395	305	13	fringes	fringe	NNS
19395	305	14	completely	completely	RB
19395	305	15	disappear	disappear	VBP
19395	305	16	,	,	,
19395	305	17	only	only	RB
19395	305	18	to	to	TO
19395	305	19	reappear	reappear	VB
19395	305	20	as	as	IN
19395	305	21	the	the	DT
19395	305	22	separation	separation	NN
19395	305	23	is	be	VBZ
19395	305	24	continued	continue	VBN
19395	305	25	.	.	.
19395	306	1	This	this	DT
19395	306	2	effect	effect	NN
19395	306	3	is	be	VBZ
19395	306	4	obtained	obtain	VBN
19395	306	5	when	when	WRB
19395	306	6	the	the	DT
19395	306	7	slits	slit	NNS
19395	306	8	are	be	VBP
19395	306	9	at	at	IN
19395	306	10	right	right	JJ
19395	306	11	angles	angle	NNS
19395	306	12	to	to	IN
19395	306	13	the	the	DT
19395	306	14	line	line	NN
19395	306	15	joining	join	VBG
19395	306	16	the	the	DT
19395	306	17	two	two	CD
19395	306	18	stars	star	NNS
19395	306	19	of	of	IN
19395	306	20	the	the	DT
19395	306	21	pair	pair	NN
19395	306	22	,	,	,
19395	306	23	found	find	VBN
19395	306	24	by	by	IN
19395	306	25	this	this	DT
19395	306	26	method	method	NN
19395	306	27	to	to	TO
19395	306	28	be	be	VB
19395	306	29	0.0418	0.0418	CD
19395	306	30	of	of	IN
19395	306	31	a	a	DT
19395	306	32	second	second	NN
19395	306	33	of	of	IN
19395	306	34	arc	arc	NN
19395	306	35	apart	apart	RB
19395	306	36	(	(	-LRB-
19395	306	37	on	on	IN
19395	306	38	December	December	NNP
19395	306	39	30	30	CD
19395	306	40	,	,	,
19395	306	41	1919	1919	CD
19395	306	42	)	)	-RRB-
19395	306	43	.	.	.
19395	307	1	Subsequent	subsequent	JJ
19395	307	2	measures	measure	NNS
19395	307	3	,	,	,
19395	307	4	of	of	IN
19395	307	5	far	far	RB
19395	307	6	greater	great	JJR
19395	307	7	precision	precision	NN
19395	307	8	than	than	IN
19395	307	9	those	those	DT
19395	307	10	obtainable	obtainable	JJ
19395	307	11	by	by	IN
19395	307	12	other	other	JJ
19395	307	13	methods	method	NNS
19395	307	14	in	in	IN
19395	307	15	the	the	DT
19395	307	16	case	case	NN
19395	307	17	of	of	IN
19395	307	18	easily	easily	RB
19395	307	19	separated	separate	VBN
19395	307	20	double	double	JJ
19395	307	21	stars	star	NNS
19395	307	22	,	,	,
19395	307	23	show	show	VBP
19395	307	24	the	the	DT
19395	307	25	rapid	rapid	JJ
19395	307	26	orbital	orbital	JJ
19395	307	27	motion	motion	NN
19395	307	28	of	of	IN
19395	307	29	the	the	DT
19395	307	30	components	component	NNS
19395	307	31	of	of	IN
19395	307	32	the	the	DT
19395	307	33	system	system	NN
19395	307	34	.	.	.
19395	308	1	This	this	DT
19395	308	2	device	device	NN
19395	308	3	will	will	MD
19395	308	4	be	be	VB
19395	308	5	applied	apply	VBN
19395	308	6	to	to	IN
19395	308	7	other	other	JJ
19395	308	8	close	close	JJ
19395	308	9	binaries	binary	NNS
19395	308	10	,	,	,
19395	308	11	hitherto	hitherto	VBN
19395	308	12	beyond	beyond	IN
19395	308	13	the	the	DT
19395	308	14	reach	reach	NN
19395	308	15	of	of	IN
19395	308	16	measurement	measurement	NN
19395	308	17	.	.	.
19395	309	1	[	[	-LRB-
19395	309	2	Illustration	illustration	NN
19395	309	3	:	:	:
19395	309	4	Fig	Fig	NNP
19395	309	5	.	.	.
19395	310	1	18	18	CD
19395	310	2	.	.	.
19395	311	1	Ring	re	VBG
19395	311	2	Nebula	Nebula	NNP
19395	311	3	in	in	IN
19395	311	4	Lyra	Lyra	NNP
19395	311	5	,	,	,
19395	311	6	photographed	photograph	VBN
19395	311	7	with	with	IN
19395	311	8	the	the	DT
19395	311	9	60-inch	60-inch	CD
19395	311	10	(	(	-LRB-
19395	311	11	Ritchey	Ritchey	NNP
19395	311	12	)	)	-RRB-
19395	311	13	and	and	CC
19395	311	14	100-inch	100-inch	CD
19395	311	15	(	(	-LRB-
19395	311	16	Duncan	Duncan	NNP
19395	311	17	)	)	-RRB-
19395	311	18	telescopes	telescope	NNS
19395	311	19	.	.	.
19395	312	1	Showing	show	VBG
19395	312	2	the	the	DT
19395	312	3	increased	increase	VBN
19395	312	4	scale	scale	NN
19395	312	5	of	of	IN
19395	312	6	the	the	DT
19395	312	7	images	image	NNS
19395	312	8	given	give	VBN
19395	312	9	by	by	IN
19395	312	10	the	the	DT
19395	312	11	larger	large	JJR
19395	312	12	instrument	instrument	NN
19395	312	13	.	.	.
19395	312	14	]	]	-RRB-
19395	313	1	Without	without	IN
19395	313	2	entering	enter	VBG
19395	313	3	into	into	IN
19395	313	4	further	further	JJ
19395	313	5	details	detail	NNS
19395	313	6	of	of	IN
19395	313	7	the	the	DT
19395	313	8	tests	test	NNS
19395	313	9	,	,	,
19395	313	10	it	-PRON-	PRP
19395	313	11	is	be	VBZ
19395	313	12	evident	evident	JJ
19395	313	13	that	that	IN
19395	313	14	the	the	DT
19395	313	15	new	new	JJ
19395	313	16	telescope	telescope	NN
19395	313	17	will	will	MD
19395	313	18	afford	afford	VB
19395	313	19	boundless	boundless	JJ
19395	313	20	possibilities	possibility	NNS
19395	313	21	for	for	IN
19395	313	22	the	the	DT
19395	313	23	study	study	NN
19395	313	24	of	of	IN
19395	313	25	the	the	DT
19395	313	26	stellar	stellar	JJ
19395	313	27	universe	universe	NN
19395	313	28	.	.	.
19395	314	1	[	[	-LRB-
19395	314	2	*	*	NFP
19395	314	3	]	]	-RRB-
19395	314	4	The	the	DT
19395	314	5	structure	structure	NN
19395	314	6	and	and	CC
19395	314	7	extent	extent	NN
19395	314	8	of	of	IN
19395	314	9	the	the	DT
19395	314	10	galactic	galactic	JJ
19395	314	11	system	system	NN
19395	314	12	,	,	,
19395	314	13	and	and	CC
19395	314	14	the	the	DT
19395	314	15	motions	motion	NNS
19395	314	16	of	of	IN
19395	314	17	the	the	DT
19395	314	18	stars	star	NNS
19395	314	19	comprising	comprise	VBG
19395	314	20	it	-PRON-	PRP
19395	314	21	;	;	:
19395	314	22	the	the	DT
19395	314	23	distribution	distribution	NN
19395	314	24	,	,	,
19395	314	25	distances	distance	NNS
19395	314	26	,	,	,
19395	314	27	and	and	CC
19395	314	28	dimensions	dimension	NNS
19395	314	29	of	of	IN
19395	314	30	the	the	DT
19395	314	31	spiral	spiral	JJ
19395	314	32	nebulæ	nebulæ	NN
19395	314	33	,	,	,
19395	314	34	their	-PRON-	PRP$
19395	314	35	motions	motion	NNS
19395	314	36	,	,	,
19395	314	37	rotation	rotation	NN
19395	314	38	,	,	,
19395	314	39	and	and	CC
19395	314	40	mode	mode	NN
19395	314	41	of	of	IN
19395	314	42	development	development	NN
19395	314	43	;	;	:
19395	314	44	the	the	DT
19395	314	45	origin	origin	NN
19395	314	46	of	of	IN
19395	314	47	the	the	DT
19395	314	48	stars	star	NNS
19395	314	49	and	and	CC
19395	314	50	the	the	DT
19395	314	51	successive	successive	JJ
19395	314	52	stages	stage	NNS
19395	314	53	in	in	IN
19395	314	54	their	-PRON-	PRP$
19395	314	55	life	life	NN
19395	314	56	history	history	NN
19395	314	57	:	:	:
19395	314	58	these	these	DT
19395	314	59	are	be	VBP
19395	314	60	some	some	DT
19395	314	61	of	of	IN
19395	314	62	the	the	DT
19395	314	63	great	great	JJ
19395	314	64	questions	question	NNS
19395	314	65	which	which	WDT
19395	314	66	the	the	DT
19395	314	67	new	new	JJ
19395	314	68	telescope	telescope	NN
19395	314	69	must	must	MD
19395	314	70	help	help	VB
19395	314	71	to	to	TO
19395	314	72	answer	answer	VB
19395	314	73	.	.	.
19395	315	1	In	in	IN
19395	315	2	such	such	PDT
19395	315	3	an	an	DT
19395	315	4	embarrassment	embarrassment	NN
19395	315	5	of	of	IN
19395	315	6	riches	rich	NNS
19395	315	7	the	the	DT
19395	315	8	chief	chief	JJ
19395	315	9	difficulty	difficulty	NN
19395	315	10	is	be	VBZ
19395	315	11	to	to	TO
19395	315	12	withstand	withstand	VB
19395	315	13	the	the	DT
19395	315	14	temptation	temptation	NN
19395	315	15	toward	toward	IN
19395	315	16	scattering	scattering	NN
19395	315	17	of	of	IN
19395	315	18	effort	effort	NN
19395	315	19	,	,	,
19395	315	20	and	and	CC
19395	315	21	to	to	TO
19395	315	22	form	form	VB
19395	315	23	an	an	DT
19395	315	24	observing	observe	VBG
19395	315	25	programme	programme	NN
19395	315	26	directed	direct	VBN
19395	315	27	toward	toward	IN
19395	315	28	the	the	DT
19395	315	29	solution	solution	NN
19395	315	30	of	of	IN
19395	315	31	crucial	crucial	JJ
19395	315	32	problems	problem	NNS
19395	315	33	rather	rather	RB
19395	315	34	than	than	IN
19395	315	35	the	the	DT
19395	315	36	accumulation	accumulation	NN
19395	315	37	of	of	IN
19395	315	38	vast	vast	JJ
19395	315	39	stores	store	NNS
19395	315	40	of	of	IN
19395	315	41	miscellaneous	miscellaneous	JJ
19395	315	42	data	datum	NNS
19395	315	43	.	.	.
19395	316	1	This	this	DT
19395	316	2	programme	programme	NN
19395	316	3	will	will	MD
19395	316	4	be	be	VB
19395	316	5	supplemented	supplement	VBN
19395	316	6	by	by	IN
19395	316	7	an	an	DT
19395	316	8	extensive	extensive	JJ
19395	316	9	study	study	NN
19395	316	10	of	of	IN
19395	316	11	the	the	DT
19395	316	12	sun	sun	NN
19395	316	13	,	,	,
19395	316	14	the	the	DT
19395	316	15	only	only	JJ
19395	316	16	star	star	NN
19395	316	17	near	near	IN
19395	316	18	enough	enough	RB
19395	316	19	the	the	DT
19395	316	20	earth	earth	NN
19395	316	21	to	to	TO
19395	316	22	be	be	VB
19395	316	23	examined	examine	VBN
19395	316	24	in	in	IN
19395	316	25	detail	detail	NN
19395	316	26	,	,	,
19395	316	27	and	and	CC
19395	316	28	by	by	IN
19395	316	29	a	a	DT
19395	316	30	series	series	NN
19395	316	31	of	of	IN
19395	316	32	laboratory	laboratory	NN
19395	316	33	investigations	investigation	NNS
19395	316	34	involving	involve	VBG
19395	316	35	the	the	DT
19395	316	36	experimental	experimental	JJ
19395	316	37	imitation	imitation	NN
19395	316	38	of	of	IN
19395	316	39	solar	solar	JJ
19395	316	40	and	and	CC
19395	316	41	stellar	stellar	JJ
19395	316	42	conditions	condition	NNS
19395	316	43	,	,	,
19395	316	44	thus	thus	RB
19395	316	45	aiding	aid	VBG
19395	316	46	in	in	IN
19395	316	47	the	the	DT
19395	316	48	interpretation	interpretation	NN
19395	316	49	of	of	IN
19395	316	50	celestial	celestial	JJ
19395	316	51	phenomena	phenomenon	NNS
19395	316	52	.	.	.
19395	317	1	[	[	-LRB-
19395	317	2	Footnote	footnote	NN
19395	317	3	*	*	NFP
19395	317	4	:	:	:
19395	317	5	It	-PRON-	PRP
19395	317	6	is	be	VBZ
19395	317	7	not	not	RB
19395	317	8	adapted	adapt	VBN
19395	317	9	for	for	IN
19395	317	10	work	work	NN
19395	317	11	on	on	IN
19395	317	12	the	the	DT
19395	317	13	sun	sun	NN
19395	317	14	,	,	,
19395	317	15	as	as	IN
19395	317	16	the	the	DT
19395	317	17	mirrors	mirror	NNS
19395	317	18	would	would	MD
19395	317	19	be	be	VB
19395	317	20	distorted	distort	VBN
19395	317	21	by	by	IN
19395	317	22	its	-PRON-	PRP$
19395	317	23	heat	heat	NN
19395	317	24	.	.	.
19395	318	1	Three	three	CD
19395	318	2	other	other	JJ
19395	318	3	telescopes	telescope	NNS
19395	318	4	,	,	,
19395	318	5	especially	especially	RB
19395	318	6	designed	design	VBN
19395	318	7	for	for	IN
19395	318	8	solar	solar	JJ
19395	318	9	observations	observation	NNS
19395	318	10	,	,	,
19395	318	11	are	be	VBP
19395	318	12	in	in	IN
19395	318	13	use	use	NN
19395	318	14	on	on	IN
19395	318	15	Mount	Mount	NNP
19395	318	16	Wilson	Wilson	NNP
19395	318	17	.	.	.
19395	318	18	]	]	-RRB-
19395	319	1	CHAPTER	CHAPTER	NNP
19395	319	2	II	ii	CD
19395	319	3	GIANT	GIANT	NNP
19395	319	4	STARS	star	VBZ
19395	319	5	Our	-PRON-	PRP$
19395	319	6	ancestral	ancestral	JJ
19395	319	7	sun	sun	NN
19395	319	8	,	,	,
19395	319	9	as	as	IN
19395	319	10	pictured	picture	VBN
19395	319	11	by	by	IN
19395	319	12	Laplace	Laplace	NNP
19395	319	13	,	,	,
19395	319	14	originally	originally	RB
19395	319	15	extended	extend	VBN
19395	319	16	in	in	IN
19395	319	17	a	a	DT
19395	319	18	state	state	NN
19395	319	19	of	of	IN
19395	319	20	luminous	luminous	JJ
19395	319	21	vapor	vapor	NN
19395	319	22	beyond	beyond	IN
19395	319	23	the	the	DT
19395	319	24	boundaries	boundary	NNS
19395	319	25	of	of	IN
19395	319	26	the	the	DT
19395	319	27	solar	solar	JJ
19395	319	28	system	system	NN
19395	319	29	.	.	.
19395	320	1	Rotating	rotate	VBG
19395	320	2	upon	upon	IN
19395	320	3	its	-PRON-	PRP$
19395	320	4	axis	axis	NN
19395	320	5	,	,	,
19395	320	6	it	-PRON-	PRP
19395	320	7	slowly	slowly	RB
19395	320	8	contracted	contract	VBD
19395	320	9	through	through	IN
19395	320	10	loss	loss	NN
19395	320	11	of	of	IN
19395	320	12	heat	heat	NN
19395	320	13	by	by	IN
19395	320	14	radiation	radiation	NN
19395	320	15	,	,	,
19395	320	16	leaving	leave	VBG
19395	320	17	behind	behind	IN
19395	320	18	it	-PRON-	PRP
19395	320	19	portions	portion	NNS
19395	320	20	of	of	IN
19395	320	21	its	-PRON-	PRP$
19395	320	22	mass	mass	NN
19395	320	23	,	,	,
19395	320	24	which	which	WDT
19395	320	25	condensed	condense	VBD
19395	320	26	to	to	TO
19395	320	27	form	form	VB
19395	320	28	the	the	DT
19395	320	29	planets	planet	NNS
19395	320	30	.	.	.
19395	321	1	Still	still	RB
19395	321	2	gaseous	gaseous	JJ
19395	321	3	,	,	,
19395	321	4	though	though	IN
19395	321	5	now	now	RB
19395	321	6	denser	denser	NN
19395	321	7	than	than	IN
19395	321	8	water	water	NN
19395	321	9	,	,	,
19395	321	10	it	-PRON-	PRP
19395	321	11	continues	continue	VBZ
19395	321	12	to	to	TO
19395	321	13	pour	pour	VB
19395	321	14	out	out	RP
19395	321	15	the	the	DT
19395	321	16	heat	heat	NN
19395	321	17	on	on	IN
19395	321	18	which	which	WDT
19395	321	19	our	-PRON-	PRP$
19395	321	20	existence	existence	NN
19395	321	21	depends	depend	VBZ
19395	321	22	,	,	,
19395	321	23	as	as	IN
19395	321	24	it	-PRON-	PRP
19395	321	25	shrinks	shrink	VBZ
19395	321	26	imperceptibly	imperceptibly	RB
19395	321	27	toward	toward	IN
19395	321	28	its	-PRON-	PRP$
19395	321	29	ultimate	ultimate	JJ
19395	321	30	condition	condition	NN
19395	321	31	of	of	IN
19395	321	32	a	a	DT
19395	321	33	cold	cold	JJ
19395	321	34	and	and	CC
19395	321	35	darkened	darkened	JJ
19395	321	36	globe	globe	NN
19395	321	37	.	.	.
19395	322	1	Laplace	Laplace	NNP
19395	322	2	's	's	POS
19395	322	3	hypothesis	hypothesis	NN
19395	322	4	has	have	VBZ
19395	322	5	been	be	VBN
19395	322	6	subjected	subject	VBN
19395	322	7	in	in	IN
19395	322	8	recent	recent	JJ
19395	322	9	years	year	NNS
19395	322	10	to	to	IN
19395	322	11	much	much	JJ
19395	322	12	criticism	criticism	NN
19395	322	13	,	,	,
19395	322	14	and	and	CC
19395	322	15	there	there	EX
19395	322	16	is	be	VBZ
19395	322	17	good	good	JJ
19395	322	18	reason	reason	NN
19395	322	19	to	to	TO
19395	322	20	doubt	doubt	VB
19395	322	21	whether	whether	IN
19395	322	22	his	-PRON-	PRP$
19395	322	23	description	description	NN
19395	322	24	of	of	IN
19395	322	25	the	the	DT
19395	322	26	mode	mode	NN
19395	322	27	of	of	IN
19395	322	28	evolution	evolution	NN
19395	322	29	of	of	IN
19395	322	30	our	-PRON-	PRP$
19395	322	31	solar	solar	JJ
19395	322	32	system	system	NN
19395	322	33	is	be	VBZ
19395	322	34	correct	correct	JJ
19395	322	35	in	in	IN
19395	322	36	every	every	DT
19395	322	37	particular	particular	NN
19395	322	38	.	.	.
19395	323	1	All	all	DT
19395	323	2	critics	critic	NNS
19395	323	3	agree	agree	VBP
19395	323	4	,	,	,
19395	323	5	however	however	RB
19395	323	6	,	,	,
19395	323	7	that	that	IN
19395	323	8	the	the	DT
19395	323	9	sun	sun	NN
19395	323	10	was	be	VBD
19395	323	11	once	once	RB
19395	323	12	enormously	enormously	RB
19395	323	13	larger	large	JJR
19395	323	14	than	than	IN
19395	323	15	it	-PRON-	PRP
19395	323	16	now	now	RB
19395	323	17	is	be	VBZ
19395	323	18	,	,	,
19395	323	19	and	and	CC
19395	323	20	that	that	IN
19395	323	21	the	the	DT
19395	323	22	planets	planet	NNS
19395	323	23	originally	originally	RB
19395	323	24	formed	form	VBD
19395	323	25	part	part	NN
19395	323	26	of	of	IN
19395	323	27	its	-PRON-	PRP$
19395	323	28	distended	distended	JJ
19395	323	29	mass	mass	NN
19395	323	30	.	.	.
19395	324	1	Even	even	RB
19395	324	2	in	in	IN
19395	324	3	its	-PRON-	PRP$
19395	324	4	present	present	JJ
19395	324	5	diminished	diminished	JJ
19395	324	6	state	state	NN
19395	324	7	,	,	,
19395	324	8	the	the	DT
19395	324	9	sun	sun	NN
19395	324	10	is	be	VBZ
19395	324	11	huge	huge	JJ
19395	324	12	beyond	beyond	IN
19395	324	13	easy	easy	JJ
19395	324	14	conception	conception	NN
19395	324	15	.	.	.
19395	325	1	Our	-PRON-	PRP$
19395	325	2	own	own	JJ
19395	325	3	earth	earth	NN
19395	325	4	,	,	,
19395	325	5	though	though	IN
19395	325	6	so	so	RB
19395	325	7	minute	minute	VB
19395	325	8	a	a	DT
19395	325	9	fragment	fragment	NN
19395	325	10	of	of	IN
19395	325	11	the	the	DT
19395	325	12	primeval	primeval	NN
19395	325	13	sun	sun	NN
19395	325	14	,	,	,
19395	325	15	is	be	VBZ
19395	325	16	nevertheless	nevertheless	RB
19395	325	17	so	so	RB
19395	325	18	large	large	JJ
19395	325	19	that	that	IN
19395	325	20	some	some	DT
19395	325	21	parts	part	NNS
19395	325	22	of	of	IN
19395	325	23	its	-PRON-	PRP$
19395	325	24	surface	surface	NN
19395	325	25	have	have	VBP
19395	325	26	not	not	RB
19395	325	27	yet	yet	RB
19395	325	28	been	be	VBN
19395	325	29	explored	explore	VBN
19395	325	30	.	.	.
19395	326	1	Seen	see	VBN
19395	326	2	beside	beside	IN
19395	326	3	the	the	DT
19395	326	4	sun	sun	NN
19395	326	5	,	,	,
19395	326	6	by	by	IN
19395	326	7	an	an	DT
19395	326	8	observer	observer	NN
19395	326	9	on	on	IN
19395	326	10	one	one	CD
19395	326	11	of	of	IN
19395	326	12	the	the	DT
19395	326	13	planets	planet	NNS
19395	326	14	,	,	,
19395	326	15	the	the	DT
19395	326	16	earth	earth	NN
19395	326	17	would	would	MD
19395	326	18	appear	appear	VB
19395	326	19	as	as	IN
19395	326	20	an	an	DT
19395	326	21	insignificant	insignificant	JJ
19395	326	22	speck	speck	NN
19395	326	23	,	,	,
19395	326	24	which	which	WDT
19395	326	25	could	could	MD
19395	326	26	be	be	VB
19395	326	27	swallowed	swallow	VBN
19395	326	28	with	with	IN
19395	326	29	ease	ease	NN
19395	326	30	by	by	IN
19395	326	31	the	the	DT
19395	326	32	whirling	whirl	VBG
19395	326	33	vortex	vortex	NNS
19395	326	34	of	of	IN
19395	326	35	a	a	DT
19395	326	36	sun	sun	NN
19395	326	37	-	-	HYPH
19395	326	38	spot	spot	NN
19395	326	39	.	.	.
19395	327	1	If	if	IN
19395	327	2	the	the	DT
19395	327	3	sun	sun	NN
19395	327	4	were	be	VBD
19395	327	5	hollow	hollow	JJ
19395	327	6	,	,	,
19395	327	7	with	with	IN
19395	327	8	the	the	DT
19395	327	9	earth	earth	NN
19395	327	10	at	at	IN
19395	327	11	its	-PRON-	PRP$
19395	327	12	centre	centre	NN
19395	327	13	,	,	,
19395	327	14	the	the	DT
19395	327	15	moon	moon	NN
19395	327	16	,	,	,
19395	327	17	though	though	IN
19395	327	18	240,000	240,000	CD
19395	327	19	miles	mile	NNS
19395	327	20	from	from	IN
19395	327	21	us	-PRON-	PRP
19395	327	22	,	,	,
19395	327	23	would	would	MD
19395	327	24	have	have	VB
19395	327	25	room	room	NN
19395	327	26	and	and	CC
19395	327	27	to	to	TO
19395	327	28	spare	spare	VB
19395	327	29	in	in	IN
19395	327	30	which	which	WDT
19395	327	31	to	to	TO
19395	327	32	describe	describe	VB
19395	327	33	its	-PRON-	PRP$
19395	327	34	orbit	orbit	NN
19395	327	35	,	,	,
19395	327	36	for	for	IN
19395	327	37	the	the	DT
19395	327	38	sun	sun	NN
19395	327	39	is	be	VBZ
19395	327	40	865,000	865,000	CD
19395	327	41	miles	mile	NNS
19395	327	42	in	in	IN
19395	327	43	diameter	diameter	NN
19395	327	44	,	,	,
19395	327	45	so	so	IN
19395	327	46	that	that	IN
19395	327	47	its	-PRON-	PRP$
19395	327	48	volume	volume	NN
19395	327	49	is	be	VBZ
19395	327	50	more	more	JJR
19395	327	51	than	than	IN
19395	327	52	a	a	DT
19395	327	53	million	million	CD
19395	327	54	times	time	NNS
19395	327	55	that	that	DT
19395	327	56	of	of	IN
19395	327	57	the	the	DT
19395	327	58	earth	earth	NN
19395	327	59	.	.	.
19395	328	1	[	[	-LRB-
19395	328	2	Illustration	illustration	NN
19395	328	3	:	:	:
19395	328	4	Fig	Fig	NNP
19395	328	5	.	.	.
19395	329	1	19	19	CD
19395	329	2	.	.	.
19395	330	1	Gaseous	gaseous	JJ
19395	330	2	prominence	prominence	NN
19395	330	3	at	at	IN
19395	330	4	the	the	DT
19395	330	5	sun	sun	NN
19395	330	6	's	's	POS
19395	330	7	limb	limb	NN
19395	330	8	,	,	,
19395	330	9	140,000	140,000	CD
19395	330	10	miles	mile	NNS
19395	330	11	high	high	JJ
19395	330	12	(	(	-LRB-
19395	330	13	Ellerman	Ellerman	NNP
19395	330	14	)	)	-RRB-
19395	330	15	.	.	.
19395	331	1	Photographed	photograph	VBN
19395	331	2	with	with	IN
19395	331	3	the	the	DT
19395	331	4	spectroheliograph	spectroheliograph	NN
19395	331	5	,	,	,
19395	331	6	using	use	VBG
19395	331	7	the	the	DT
19395	331	8	light	light	NN
19395	331	9	emitted	emit	VBN
19395	331	10	by	by	IN
19395	331	11	glowing	glow	VBG
19395	331	12	calcium	calcium	NN
19395	331	13	vapor	vapor	NN
19395	331	14	.	.	.
19395	332	1	The	the	DT
19395	332	2	comparative	comparative	JJ
19395	332	3	size	size	NN
19395	332	4	of	of	IN
19395	332	5	the	the	DT
19395	332	6	earth	earth	NN
19395	332	7	is	be	VBZ
19395	332	8	indicated	indicate	VBN
19395	332	9	by	by	IN
19395	332	10	the	the	DT
19395	332	11	white	white	NNP
19395	332	12	circle	circle	NNP
19395	332	13	.	.	.
19395	332	14	]	]	-RRB-
19395	333	1	But	but	CC
19395	333	2	what	what	WP
19395	333	3	of	of	IN
19395	333	4	the	the	DT
19395	333	5	stars	star	NNS
19395	333	6	,	,	,
19395	333	7	proved	prove	VBN
19395	333	8	by	by	IN
19395	333	9	the	the	DT
19395	333	10	spectroscope	spectroscope	NN
19395	333	11	to	to	TO
19395	333	12	be	be	VB
19395	333	13	self	self	NN
19395	333	14	-	-	HYPH
19395	333	15	luminous	luminous	JJ
19395	333	16	,	,	,
19395	333	17	intensely	intensely	RB
19395	333	18	hot	hot	JJ
19395	333	19	,	,	,
19395	333	20	and	and	CC
19395	333	21	formed	form	VBN
19395	333	22	of	of	IN
19395	333	23	the	the	DT
19395	333	24	same	same	JJ
19395	333	25	chemical	chemical	NN
19395	333	26	elements	element	NNS
19395	333	27	that	that	WDT
19395	333	28	constitute	constitute	VBP
19395	333	29	the	the	DT
19395	333	30	sun	sun	NN
19395	333	31	and	and	CC
19395	333	32	the	the	DT
19395	333	33	earth	earth	NN
19395	333	34	?	?	.
19395	334	1	Are	be	VBP
19395	334	2	they	-PRON-	PRP
19395	334	3	comparable	comparable	JJ
19395	334	4	in	in	IN
19395	334	5	size	size	NN
19395	334	6	with	with	IN
19395	334	7	the	the	DT
19395	334	8	sun	sun	NN
19395	334	9	?	?	.
19395	335	1	Do	do	VBP
19395	335	2	they	-PRON-	PRP
19395	335	3	occur	occur	VB
19395	335	4	in	in	IN
19395	335	5	all	all	DT
19395	335	6	stages	stage	NNS
19395	335	7	of	of	IN
19395	335	8	development	development	NN
19395	335	9	,	,	,
19395	335	10	from	from	IN
19395	335	11	infancy	infancy	NN
19395	335	12	to	to	IN
19395	335	13	old	old	JJ
19395	335	14	age	age	NN
19395	335	15	?	?	.
19395	336	1	And	and	CC
19395	336	2	if	if	IN
19395	336	3	such	such	JJ
19395	336	4	stages	stage	NNS
19395	336	5	can	can	MD
19395	336	6	be	be	VB
19395	336	7	detected	detect	VBN
19395	336	8	,	,	,
19395	336	9	do	do	VBP
19395	336	10	they	-PRON-	PRP
19395	336	11	afford	afford	VB
19395	336	12	indications	indication	NNS
19395	336	13	of	of	IN
19395	336	14	the	the	DT
19395	336	15	gradual	gradual	JJ
19395	336	16	diminution	diminution	NN
19395	336	17	in	in	IN
19395	336	18	volume	volume	NN
19395	336	19	which	which	WDT
19395	336	20	Laplace	Laplace	NNP
19395	336	21	imagined	imagine	VBD
19395	336	22	the	the	DT
19395	336	23	sun	sun	NN
19395	336	24	to	to	TO
19395	336	25	experience	experience	VB
19395	336	26	?	?	.
19395	337	1	[	[	-LRB-
19395	337	2	Illustration	illustration	NN
19395	337	3	:	:	:
19395	337	4	Fig	Fig	NNP
19395	337	5	.	.	.
19395	338	1	20	20	CD
19395	338	2	.	.	.
19395	339	1	The	the	DT
19395	339	2	sun	sun	NN
19395	339	3	,	,	,
19395	339	4	865,000	865,000	CD
19395	339	5	miles	mile	NNS
19395	339	6	in	in	IN
19395	339	7	diameter	diameter	NN
19395	339	8	,	,	,
19395	339	9	from	from	IN
19395	339	10	a	a	DT
19395	339	11	direct	direct	JJ
19395	339	12	photograph	photograph	NN
19395	339	13	showing	show	VBG
19395	339	14	many	many	JJ
19395	339	15	sun	sun	NN
19395	339	16	-	-	HYPH
19395	339	17	spots	spot	NNS
19395	339	18	(	(	-LRB-
19395	339	19	Whitney	Whitney	NNP
19395	339	20	)	)	-RRB-
19395	339	21	The	the	DT
19395	339	22	small	small	JJ
19395	339	23	black	black	JJ
19395	339	24	disk	disk	NN
19395	339	25	in	in	IN
19395	339	26	the	the	DT
19395	339	27	centre	centre	NN
19395	339	28	represents	represent	VBZ
19395	339	29	the	the	DT
19395	339	30	comparative	comparative	JJ
19395	339	31	size	size	NN
19395	339	32	of	of	IN
19395	339	33	the	the	DT
19395	339	34	earth	earth	NN
19395	339	35	,	,	,
19395	339	36	while	while	IN
19395	339	37	the	the	DT
19395	339	38	circle	circle	NN
19395	339	39	surrounding	surround	VBG
19395	339	40	it	-PRON-	PRP
19395	339	41	corresponds	correspond	VBZ
19395	339	42	in	in	IN
19395	339	43	diameter	diameter	NN
19395	339	44	to	to	IN
19395	339	45	the	the	DT
19395	339	46	orbit	orbit	NN
19395	339	47	of	of	IN
19395	339	48	the	the	DT
19395	339	49	moon	moon	NN
19395	339	50	.	.	.
19395	339	51	]	]	-RRB-
19395	340	1	STAR	STAR	NNP
19395	340	2	IMAGES	IMAGES	NNP
19395	340	3	Prior	prior	RB
19395	340	4	to	to	IN
19395	340	5	the	the	DT
19395	340	6	application	application	NN
19395	340	7	of	of	IN
19395	340	8	the	the	DT
19395	340	9	powerful	powerful	JJ
19395	340	10	new	new	JJ
19395	340	11	engine	engine	NN
19395	340	12	of	of	IN
19395	340	13	research	research	NN
19395	340	14	described	describe	VBN
19395	340	15	in	in	IN
19395	340	16	this	this	DT
19395	340	17	article	article	NN
19395	340	18	we	-PRON-	PRP
19395	340	19	have	have	VBP
19395	340	20	had	have	VBN
19395	340	21	no	no	DT
19395	340	22	means	means	NN
19395	340	23	of	of	IN
19395	340	24	measuring	measure	VBG
19395	340	25	the	the	DT
19395	340	26	diameters	diameter	NNS
19395	340	27	of	of	IN
19395	340	28	the	the	DT
19395	340	29	stars	star	NNS
19395	340	30	.	.	.
19395	341	1	We	-PRON-	PRP
19395	341	2	have	have	VBP
19395	341	3	measured	measure	VBN
19395	341	4	their	-PRON-	PRP$
19395	341	5	distances	distance	NNS
19395	341	6	and	and	CC
19395	341	7	their	-PRON-	PRP$
19395	341	8	motions	motion	NNS
19395	341	9	,	,	,
19395	341	10	determined	determine	VBD
19395	341	11	their	-PRON-	PRP$
19395	341	12	chemical	chemical	NN
19395	341	13	composition	composition	NN
19395	341	14	,	,	,
19395	341	15	and	and	CC
19395	341	16	obtained	obtain	VBD
19395	341	17	undeniable	undeniable	JJ
19395	341	18	evidence	evidence	NN
19395	341	19	of	of	IN
19395	341	20	progressive	progressive	JJ
19395	341	21	development	development	NN
19395	341	22	,	,	,
19395	341	23	but	but	CC
19395	341	24	even	even	RB
19395	341	25	in	in	IN
19395	341	26	the	the	DT
19395	341	27	most	most	RBS
19395	341	28	powerful	powerful	JJ
19395	341	29	telescopes	telescope	NNS
19395	341	30	their	-PRON-	PRP$
19395	341	31	images	image	NNS
19395	341	32	are	be	VBP
19395	341	33	so	so	RB
19395	341	34	minute	minute	JJ
19395	341	35	that	that	IN
19395	341	36	they	-PRON-	PRP
19395	341	37	appear	appear	VBP
19395	341	38	as	as	IN
19395	341	39	points	point	NNS
19395	341	40	rather	rather	RB
19395	341	41	than	than	IN
19395	341	42	as	as	IN
19395	341	43	disks	disk	NNS
19395	341	44	.	.	.
19395	342	1	In	in	IN
19395	342	2	fact	fact	NN
19395	342	3	,	,	,
19395	342	4	the	the	DT
19395	342	5	larger	large	JJR
19395	342	6	the	the	DT
19395	342	7	telescope	telescope	NN
19395	342	8	and	and	CC
19395	342	9	the	the	DT
19395	342	10	more	more	RBR
19395	342	11	perfect	perfect	JJ
19395	342	12	the	the	DT
19395	342	13	atmospheric	atmospheric	JJ
19395	342	14	conditions	condition	NNS
19395	342	15	at	at	IN
19395	342	16	the	the	DT
19395	342	17	observer	observer	NN
19395	342	18	's	's	POS
19395	342	19	command	command	NN
19395	342	20	,	,	,
19395	342	21	the	the	DT
19395	342	22	smaller	small	JJR
19395	342	23	do	do	VBP
19395	342	24	these	these	DT
19395	342	25	images	image	NNS
19395	342	26	appear	appear	VB
19395	342	27	.	.	.
19395	343	1	On	on	IN
19395	343	2	the	the	DT
19395	343	3	photographic	photographic	JJ
19395	343	4	plate	plate	NN
19395	343	5	,	,	,
19395	343	6	it	-PRON-	PRP
19395	343	7	is	be	VBZ
19395	343	8	true	true	JJ
19395	343	9	,	,	,
19395	343	10	the	the	DT
19395	343	11	stars	star	NNS
19395	343	12	are	be	VBP
19395	343	13	recorded	record	VBN
19395	343	14	as	as	IN
19395	343	15	measurable	measurable	JJ
19395	343	16	disks	disk	NNS
19395	343	17	,	,	,
19395	343	18	but	but	CC
19395	343	19	these	these	DT
19395	343	20	are	be	VBP
19395	343	21	due	due	JJ
19395	343	22	to	to	IN
19395	343	23	the	the	DT
19395	343	24	spreading	spreading	NN
19395	343	25	of	of	IN
19395	343	26	the	the	DT
19395	343	27	light	light	NN
19395	343	28	from	from	IN
19395	343	29	their	-PRON-	PRP$
19395	343	30	bright	bright	JJ
19395	343	31	point	point	NN
19395	343	32	-	-	HYPH
19395	343	33	like	like	JJ
19395	343	34	images	image	NNS
19395	343	35	,	,	,
19395	343	36	and	and	CC
19395	343	37	their	-PRON-	PRP$
19395	343	38	diameters	diameter	NNS
19395	343	39	increase	increase	VBP
19395	343	40	as	as	IN
19395	343	41	the	the	DT
19395	343	42	exposure	exposure	NN
19395	343	43	time	time	NN
19395	343	44	is	be	VBZ
19395	343	45	prolonged	prolong	VBN
19395	343	46	.	.	.
19395	344	1	From	from	IN
19395	344	2	the	the	DT
19395	344	3	images	image	NNS
19395	344	4	of	of	IN
19395	344	5	the	the	DT
19395	344	6	brighter	bright	JJR
19395	344	7	stars	star	NNS
19395	344	8	rays	ray	NNS
19395	344	9	of	of	IN
19395	344	10	light	light	JJ
19395	344	11	project	project	NN
19395	344	12	in	in	IN
19395	344	13	straight	straight	JJ
19395	344	14	lines	line	NNS
19395	344	15	,	,	,
19395	344	16	but	but	CC
19395	344	17	these	these	DT
19395	344	18	also	also	RB
19395	344	19	are	be	VBP
19395	344	20	instrumental	instrumental	JJ
19395	344	21	phenomena	phenomenon	NNS
19395	344	22	,	,	,
19395	344	23	due	due	IN
19395	344	24	to	to	IN
19395	344	25	diffraction	diffraction	NN
19395	344	26	of	of	IN
19395	344	27	light	light	NN
19395	344	28	by	by	IN
19395	344	29	the	the	DT
19395	344	30	steel	steel	NN
19395	344	31	bars	bar	NNS
19395	344	32	that	that	WDT
19395	344	33	support	support	VBP
19395	344	34	the	the	DT
19395	344	35	small	small	JJ
19395	344	36	mirror	mirror	NN
19395	344	37	in	in	IN
19395	344	38	the	the	DT
19395	344	39	tube	tube	NN
19395	344	40	of	of	IN
19395	344	41	reflecting	reflect	VBG
19395	344	42	telescopes	telescope	NNS
19395	344	43	.	.	.
19395	345	1	In	in	IN
19395	345	2	a	a	DT
19395	345	3	word	word	NN
19395	345	4	,	,	,
19395	345	5	the	the	DT
19395	345	6	stars	star	NNS
19395	345	7	are	be	VBP
19395	345	8	so	so	RB
19395	345	9	remote	remote	JJ
19395	345	10	that	that	IN
19395	345	11	the	the	DT
19395	345	12	largest	large	JJS
19395	345	13	and	and	CC
19395	345	14	most	most	RBS
19395	345	15	perfect	perfect	JJ
19395	345	16	telescopes	telescope	NNS
19395	345	17	show	show	VBP
19395	345	18	them	-PRON-	PRP
19395	345	19	only	only	RB
19395	345	20	as	as	IN
19395	345	21	extremely	extremely	RB
19395	345	22	minute	minute	JJ
19395	345	23	needle	needle	NN
19395	345	24	-	-	HYPH
19395	345	25	points	point	NNS
19395	345	26	of	of	IN
19395	345	27	light	light	NN
19395	345	28	,	,	,
19395	345	29	without	without	IN
19395	345	30	any	any	DT
19395	345	31	trace	trace	NN
19395	345	32	of	of	IN
19395	345	33	their	-PRON-	PRP$
19395	345	34	true	true	JJ
19395	345	35	disks	disk	NNS
19395	345	36	.	.	.
19395	346	1	[	[	-LRB-
19395	346	2	Illustration	illustration	NN
19395	346	3	:	:	:
19395	346	4	Fig	Fig	NNP
19395	346	5	.	.	.
19395	347	1	21	21	CD
19395	347	2	.	.	.
19395	348	1	Great	great	JJ
19395	348	2	sun	sun	NN
19395	348	3	-	-	HYPH
19395	348	4	spot	spot	NN
19395	348	5	group	group	NN
19395	348	6	,	,	,
19395	348	7	August	August	NNP
19395	348	8	8	8	CD
19395	348	9	,	,	,
19395	348	10	1917	1917	CD
19395	348	11	(	(	-LRB-
19395	348	12	Whitney	Whitney	NNP
19395	348	13	)	)	-RRB-
19395	348	14	.	.	.
19395	349	1	The	the	DT
19395	349	2	disk	disk	NN
19395	349	3	in	in	IN
19395	349	4	the	the	DT
19395	349	5	corner	corner	NN
19395	349	6	represents	represent	VBZ
19395	349	7	the	the	DT
19395	349	8	comparative	comparative	JJ
19395	349	9	size	size	NN
19395	349	10	of	of	IN
19395	349	11	the	the	DT
19395	349	12	earth	earth	NN
19395	349	13	.	.	.
19395	349	14	]	]	-RRB-
19395	350	1	How	how	WRB
19395	350	2	,	,	,
19395	350	3	then	then	RB
19395	350	4	,	,	,
19395	350	5	may	may	MD
19395	350	6	we	-PRON-	PRP
19395	350	7	hope	hope	VB
19395	350	8	to	to	TO
19395	350	9	measure	measure	VB
19395	350	10	their	-PRON-	PRP$
19395	350	11	diameters	diameter	NNS
19395	350	12	?	?	.
19395	351	1	By	by	IN
19395	351	2	using	use	VBG
19395	351	3	,	,	,
19395	351	4	as	as	IN
19395	351	5	the	the	DT
19395	351	6	man	man	NN
19395	351	7	of	of	IN
19395	351	8	science	science	NNP
19395	351	9	must	must	MD
19395	351	10	so	so	RB
19395	351	11	often	often	RB
19395	351	12	do	do	VB
19395	351	13	,	,	,
19395	351	14	indirect	indirect	JJ
19395	351	15	means	mean	NNS
19395	351	16	when	when	WRB
19395	351	17	the	the	DT
19395	351	18	direct	direct	JJ
19395	351	19	attack	attack	NN
19395	351	20	fails	fail	VBZ
19395	351	21	.	.	.
19395	352	1	Most	Most	JJS
19395	352	2	of	of	IN
19395	352	3	the	the	DT
19395	352	4	remarkable	remarkable	JJ
19395	352	5	progress	progress	NN
19395	352	6	of	of	IN
19395	352	7	astronomy	astronomy	NN
19395	352	8	during	during	IN
19395	352	9	the	the	DT
19395	352	10	last	last	JJ
19395	352	11	quarter	quarter	NN
19395	352	12	-	-	HYPH
19395	352	13	century	century	NN
19395	352	14	has	have	VBZ
19395	352	15	resulted	result	VBN
19395	352	16	from	from	IN
19395	352	17	the	the	DT
19395	352	18	application	application	NN
19395	352	19	of	of	IN
19395	352	20	new	new	JJ
19395	352	21	and	and	CC
19395	352	22	ingenious	ingenious	JJ
19395	352	23	devices	device	NNS
19395	352	24	borrowed	borrow	VBN
19395	352	25	from	from	IN
19395	352	26	the	the	DT
19395	352	27	physicist	physicist	NN
19395	352	28	.	.	.
19395	353	1	These	these	DT
19395	353	2	have	have	VBP
19395	353	3	multiplied	multiply	VBN
19395	353	4	to	to	IN
19395	353	5	such	such	PDT
19395	353	6	a	a	DT
19395	353	7	degree	degree	NN
19395	353	8	that	that	IN
19395	353	9	some	some	DT
19395	353	10	of	of	IN
19395	353	11	our	-PRON-	PRP$
19395	353	12	observatories	observatory	NNS
19395	353	13	are	be	VBP
19395	353	14	literally	literally	RB
19395	353	15	physical	physical	JJ
19395	353	16	laboratories	laboratory	NNS
19395	353	17	,	,	,
19395	353	18	in	in	IN
19395	353	19	which	which	WDT
19395	353	20	the	the	DT
19395	353	21	sun	sun	NN
19395	353	22	and	and	CC
19395	353	23	stars	star	NNS
19395	353	24	are	be	VBP
19395	353	25	examined	examine	VBN
19395	353	26	by	by	IN
19395	353	27	powerful	powerful	JJ
19395	353	28	spectroscopes	spectroscope	NNS
19395	353	29	and	and	CC
19395	353	30	other	other	JJ
19395	353	31	optical	optical	JJ
19395	353	32	instruments	instrument	NNS
19395	353	33	that	that	WDT
19395	353	34	have	have	VBP
19395	353	35	recently	recently	RB
19395	353	36	advanced	advance	VBN
19395	353	37	our	-PRON-	PRP$
19395	353	38	knowledge	knowledge	NN
19395	353	39	of	of	IN
19395	353	40	physics	physics	NN
19395	353	41	by	by	IN
19395	353	42	leaps	leap	NNS
19395	353	43	and	and	CC
19395	353	44	bounds	bound	NNS
19395	353	45	.	.	.
19395	354	1	In	in	IN
19395	354	2	the	the	DT
19395	354	3	present	present	JJ
19395	354	4	case	case	NN
19395	354	5	we	-PRON-	PRP
19395	354	6	are	be	VBP
19395	354	7	indebted	indebted	JJ
19395	354	8	for	for	IN
19395	354	9	our	-PRON-	PRP$
19395	354	10	star	star	NN
19395	354	11	-	-	HYPH
19395	354	12	measuring	measure	VBG
19395	354	13	device	device	NN
19395	354	14	to	to	IN
19395	354	15	the	the	DT
19395	354	16	distinguished	distinguished	JJ
19395	354	17	physicist	physicist	JJ
19395	354	18	Professor	Professor	NNP
19395	354	19	Albert	Albert	NNP
19395	354	20	A.	A.	NNP
19395	354	21	Michelson	Michelson	NNP
19395	354	22	,	,	,
19395	354	23	who	who	WP
19395	354	24	has	have	VBZ
19395	354	25	contributed	contribute	VBN
19395	354	26	a	a	DT
19395	354	27	long	long	JJ
19395	354	28	array	array	NN
19395	354	29	of	of	IN
19395	354	30	novel	novel	JJ
19395	354	31	apparatus	apparatus	NN
19395	354	32	and	and	CC
19395	354	33	methods	method	NNS
19395	354	34	to	to	IN
19395	354	35	physics	physics	NN
19395	354	36	and	and	CC
19395	354	37	astronomy	astronomy	NN
19395	354	38	.	.	.
19395	355	1	THE	the	DT
19395	355	2	INTERFEROMETER	INTERFEROMETER	NNP
19395	355	3	The	the	DT
19395	355	4	instrument	instrument	NN
19395	355	5	in	in	IN
19395	355	6	question	question	NN
19395	355	7	,	,	,
19395	355	8	known	know	VBN
19395	355	9	as	as	IN
19395	355	10	the	the	DT
19395	355	11	interferometer	interferometer	NN
19395	355	12	,	,	,
19395	355	13	had	have	VBD
19395	355	14	previously	previously	RB
19395	355	15	yielded	yield	VBN
19395	355	16	a	a	DT
19395	355	17	remarkable	remarkable	JJ
19395	355	18	series	series	NN
19395	355	19	of	of	IN
19395	355	20	results	result	NNS
19395	355	21	when	when	WRB
19395	355	22	applied	apply	VBN
19395	355	23	in	in	IN
19395	355	24	its	-PRON-	PRP$
19395	355	25	various	various	JJ
19395	355	26	forms	form	NNS
19395	355	27	to	to	IN
19395	355	28	the	the	DT
19395	355	29	solution	solution	NN
19395	355	30	of	of	IN
19395	355	31	fundamental	fundamental	JJ
19395	355	32	problems	problem	NNS
19395	355	33	.	.	.
19395	356	1	To	to	TO
19395	356	2	mention	mention	VB
19395	356	3	only	only	RB
19395	356	4	a	a	DT
19395	356	5	few	few	JJ
19395	356	6	of	of	IN
19395	356	7	those	those	DT
19395	356	8	that	that	WDT
19395	356	9	have	have	VBP
19395	356	10	helped	help	VBN
19395	356	11	to	to	TO
19395	356	12	establish	establish	VB
19395	356	13	Michelson	Michelson	NNP
19395	356	14	's	's	POS
19395	356	15	fame	fame	NN
19395	356	16	,	,	,
19395	356	17	we	-PRON-	PRP
19395	356	18	may	may	MD
19395	356	19	recall	recall	VB
19395	356	20	that	that	IN
19395	356	21	our	-PRON-	PRP$
19395	356	22	exact	exact	JJ
19395	356	23	knowledge	knowledge	NN
19395	356	24	of	of	IN
19395	356	25	the	the	DT
19395	356	26	length	length	NN
19395	356	27	of	of	IN
19395	356	28	the	the	DT
19395	356	29	international	international	JJ
19395	356	30	metre	metre	NN
19395	356	31	at	at	IN
19395	356	32	Sevres	Sevres	NNP
19395	356	33	,	,	,
19395	356	34	the	the	DT
19395	356	35	world	world	NN
19395	356	36	's	's	POS
19395	356	37	standard	standard	NN
19395	356	38	of	of	IN
19395	356	39	measurement	measurement	NN
19395	356	40	,	,	,
19395	356	41	was	be	VBD
19395	356	42	obtained	obtain	VBN
19395	356	43	by	by	IN
19395	356	44	him	-PRON-	PRP
19395	356	45	with	with	IN
19395	356	46	an	an	DT
19395	356	47	interferometer	interferometer	NN
19395	356	48	in	in	IN
19395	356	49	terms	term	NNS
19395	356	50	of	of	IN
19395	356	51	the	the	DT
19395	356	52	invariable	invariable	JJ
19395	356	53	length	length	NN
19395	356	54	of	of	IN
19395	356	55	light	light	NN
19395	356	56	-	-	HYPH
19395	356	57	waves	wave	NNS
19395	356	58	.	.	.
19395	357	1	A	a	DT
19395	357	2	different	different	JJ
19395	357	3	form	form	NN
19395	357	4	of	of	IN
19395	357	5	interferometer	interferometer	NNP
19395	357	6	has	have	VBZ
19395	357	7	more	more	RBR
19395	357	8	recently	recently	RB
19395	357	9	enabled	enable	VBN
19395	357	10	him	-PRON-	PRP
19395	357	11	to	to	TO
19395	357	12	measure	measure	VB
19395	357	13	the	the	DT
19395	357	14	minute	minute	NN
19395	357	15	tides	tide	NNS
19395	357	16	within	within	IN
19395	357	17	the	the	DT
19395	357	18	solid	solid	JJ
19395	357	19	body	body	NN
19395	357	20	of	of	IN
19395	357	21	the	the	DT
19395	357	22	earth	earth	NN
19395	357	23	--	--	:
19395	357	24	not	not	RB
19395	357	25	the	the	DT
19395	357	26	great	great	JJ
19395	357	27	tides	tide	NNS
19395	357	28	of	of	IN
19395	357	29	the	the	DT
19395	357	30	ocean	ocean	NN
19395	357	31	,	,	,
19395	357	32	but	but	CC
19395	357	33	the	the	DT
19395	357	34	slight	slight	JJ
19395	357	35	deformations	deformation	NNS
19395	357	36	of	of	IN
19395	357	37	the	the	DT
19395	357	38	earth	earth	NN
19395	357	39	's	's	POS
19395	357	40	body	body	NN
19395	357	41	,	,	,
19395	357	42	which	which	WDT
19395	357	43	is	be	VBZ
19395	357	44	as	as	RB
19395	357	45	rigid	rigid	JJ
19395	357	46	as	as	IN
19395	357	47	steel	steel	NN
19395	357	48	,	,	,
19395	357	49	that	that	WDT
19395	357	50	are	be	VBP
19395	357	51	caused	cause	VBN
19395	357	52	by	by	IN
19395	357	53	the	the	DT
19395	357	54	varying	vary	VBG
19395	357	55	attractions	attraction	NNS
19395	357	56	of	of	IN
19395	357	57	the	the	DT
19395	357	58	sun	sun	NN
19395	357	59	and	and	CC
19395	357	60	moon	moon	NN
19395	357	61	.	.	.
19395	358	1	Finally	finally	RB
19395	358	2	,	,	,
19395	358	3	to	to	TO
19395	358	4	mention	mention	VB
19395	358	5	only	only	RB
19395	358	6	one	one	CD
19395	358	7	more	more	JJR
19395	358	8	case	case	NN
19395	358	9	,	,	,
19395	358	10	it	-PRON-	PRP
19395	358	11	was	be	VBD
19395	358	12	the	the	DT
19395	358	13	Michelson	Michelson	NNP
19395	358	14	-	-	HYPH
19395	358	15	Morley	Morley	NNP
19395	358	16	experiment	experiment	NN
19395	358	17	,	,	,
19395	358	18	made	make	VBN
19395	358	19	years	year	NNS
19395	358	20	ago	ago	RB
19395	358	21	with	with	IN
19395	358	22	still	still	RB
19395	358	23	another	another	DT
19395	358	24	form	form	NN
19395	358	25	of	of	IN
19395	358	26	interferometer	interferometer	NN
19395	358	27	,	,	,
19395	358	28	that	that	WDT
19395	358	29	yielded	yield	VBD
19395	358	30	the	the	DT
19395	358	31	basic	basic	JJ
19395	358	32	idea	idea	NN
19395	358	33	from	from	IN
19395	358	34	which	which	WDT
19395	358	35	the	the	DT
19395	358	36	theory	theory	NN
19395	358	37	of	of	IN
19395	358	38	relativity	relativity	NN
19395	358	39	was	be	VBD
19395	358	40	developed	develop	VBN
19395	358	41	by	by	IN
19395	358	42	Lorentz	Lorentz	NNP
19395	358	43	and	and	CC
19395	358	44	Einstein	Einstein	NNP
19395	358	45	.	.	.
19395	359	1	[	[	-LRB-
19395	359	2	Illustration	illustration	NN
19395	359	3	:	:	:
19395	359	4	Fig	Fig	NNP
19395	359	5	.	.	.
19395	360	1	22	22	CD
19395	360	2	.	.	.
19395	361	1	Photograph	Photograph	NNP
19395	361	2	of	of	IN
19395	361	3	the	the	DT
19395	361	4	hydrogen	hydrogen	NN
19395	361	5	atmosphere	atmosphere	NN
19395	361	6	of	of	IN
19395	361	7	the	the	DT
19395	361	8	sun	sun	NN
19395	361	9	(	(	-LRB-
19395	361	10	Ellerman	Ellerman	NNP
19395	361	11	)	)	-RRB-
19395	361	12	.	.	.
19395	362	1	Made	make	VBN
19395	362	2	with	with	IN
19395	362	3	the	the	DT
19395	362	4	spectroheliograph	spectroheliograph	NN
19395	362	5	,	,	,
19395	362	6	showing	show	VBG
19395	362	7	the	the	DT
19395	362	8	immense	immense	JJ
19395	362	9	vortices	vortex	NNS
19395	362	10	,	,	,
19395	362	11	or	or	CC
19395	362	12	whirling	whirl	VBG
19395	362	13	storms	storm	NNS
19395	362	14	like	like	IN
19395	362	15	tornadoes	tornado	NNS
19395	362	16	,	,	,
19395	362	17	that	that	DT
19395	362	18	centre	centre	NN
19395	362	19	in	in	IN
19395	362	20	sun	sun	NN
19395	362	21	-	-	HYPH
19395	362	22	spots	spot	NNS
19395	362	23	.	.	.
19395	363	1	The	the	DT
19395	363	2	comparative	comparative	JJ
19395	363	3	size	size	NN
19395	363	4	of	of	IN
19395	363	5	the	the	DT
19395	363	6	earth	earth	NN
19395	363	7	is	be	VBZ
19395	363	8	shown	show	VBN
19395	363	9	by	by	IN
19395	363	10	the	the	DT
19395	363	11	white	white	NNP
19395	363	12	circle	circle	NN
19395	363	13	traced	trace	VBD
19395	363	14	on	on	IN
19395	363	15	the	the	DT
19395	363	16	largest	large	JJS
19395	363	17	sun	sun	NN
19395	363	18	-	-	HYPH
19395	363	19	spot	spot	NN
19395	363	20	.	.	.
19395	363	21	]	]	-RRB-
19395	364	1	The	the	DT
19395	364	2	history	history	NN
19395	364	3	of	of	IN
19395	364	4	the	the	DT
19395	364	5	method	method	NN
19395	364	6	of	of	IN
19395	364	7	measuring	measure	VBG
19395	364	8	star	star	NN
19395	364	9	diameters	diameter	NNS
19395	364	10	is	be	VBZ
19395	364	11	a	a	DT
19395	364	12	very	very	RB
19395	364	13	curious	curious	JJ
19395	364	14	one	one	NN
19395	364	15	,	,	,
19395	364	16	showing	show	VBG
19395	364	17	how	how	WRB
19395	364	18	the	the	DT
19395	364	19	most	most	RBS
19395	364	20	promising	promising	JJ
19395	364	21	opportunities	opportunity	NNS
19395	364	22	for	for	IN
19395	364	23	scientific	scientific	JJ
19395	364	24	progress	progress	NN
19395	364	25	may	may	MD
19395	364	26	lie	lie	VB
19395	364	27	unused	unused	JJ
19395	364	28	for	for	IN
19395	364	29	decades	decade	NNS
19395	364	30	.	.	.
19395	365	1	The	the	DT
19395	365	2	fundamental	fundamental	JJ
19395	365	3	principle	principle	NN
19395	365	4	of	of	IN
19395	365	5	the	the	DT
19395	365	6	device	device	NN
19395	365	7	was	be	VBD
19395	365	8	first	first	RB
19395	365	9	suggested	suggest	VBN
19395	365	10	by	by	IN
19395	365	11	the	the	DT
19395	365	12	great	great	JJ
19395	365	13	French	french	JJ
19395	365	14	physicist	physicist	NN
19395	365	15	Fizeau	Fizeau	NNP
19395	365	16	in	in	IN
19395	365	17	1868	1868	CD
19395	365	18	.	.	.
19395	366	1	In	in	IN
19395	366	2	1874	1874	CD
19395	366	3	the	the	DT
19395	366	4	theory	theory	NN
19395	366	5	was	be	VBD
19395	366	6	developed	develop	VBN
19395	366	7	by	by	IN
19395	366	8	the	the	DT
19395	366	9	French	french	JJ
19395	366	10	astronomer	astronomer	NN
19395	366	11	Stéphan	Stéphan	NNP
19395	366	12	,	,	,
19395	366	13	who	who	WP
19395	366	14	observed	observe	VBD
19395	366	15	interference	interference	NN
19395	366	16	fringes	fringe	NNS
19395	366	17	given	give	VBN
19395	366	18	by	by	IN
19395	366	19	a	a	DT
19395	366	20	large	large	JJ
19395	366	21	number	number	NN
19395	366	22	of	of	IN
19395	366	23	stars	star	NNS
19395	366	24	,	,	,
19395	366	25	and	and	CC
19395	366	26	rightly	rightly	RB
19395	366	27	concluded	conclude	VBD
19395	366	28	that	that	IN
19395	366	29	their	-PRON-	PRP$
19395	366	30	angular	angular	JJ
19395	366	31	diameters	diameter	NNS
19395	366	32	must	must	MD
19395	366	33	be	be	VB
19395	366	34	much	much	RB
19395	366	35	smaller	small	JJR
19395	366	36	than	than	IN
19395	366	37	0.158	0.158	CD
19395	366	38	of	of	IN
19395	366	39	a	a	DT
19395	366	40	second	second	NN
19395	366	41	of	of	IN
19395	366	42	arc	arc	NN
19395	366	43	,	,	,
19395	366	44	the	the	DT
19395	366	45	smallest	small	JJS
19395	366	46	measurable	measurable	JJ
19395	366	47	with	with	IN
19395	366	48	his	-PRON-	PRP$
19395	366	49	instrument	instrument	NN
19395	366	50	.	.	.
19395	367	1	In	in	IN
19395	367	2	1890	1890	CD
19395	367	3	Michelson	Michelson	NNP
19395	367	4	,	,	,
19395	367	5	unaware	unaware	JJ
19395	367	6	of	of	IN
19395	367	7	the	the	DT
19395	367	8	earlier	early	JJR
19395	367	9	work	work	NN
19395	367	10	,	,	,
19395	367	11	published	publish	VBN
19395	367	12	in	in	IN
19395	367	13	the	the	DT
19395	367	14	_	_	NNP
19395	367	15	Philosophical	Philosophical	NNP
19395	367	16	Magazine	Magazine	NNP
19395	367	17	_	_	NNP
19395	367	18	a	a	DT
19395	367	19	complete	complete	JJ
19395	367	20	description	description	NN
19395	367	21	of	of	IN
19395	367	22	an	an	DT
19395	367	23	interferometer	interferometer	NN
19395	367	24	capable	capable	JJ
19395	367	25	of	of	IN
19395	367	26	determining	determine	VBG
19395	367	27	with	with	IN
19395	367	28	surprising	surprising	JJ
19395	367	29	accuracy	accuracy	NN
19395	367	30	the	the	DT
19395	367	31	distance	distance	NN
19395	367	32	between	between	IN
19395	367	33	the	the	DT
19395	367	34	components	component	NNS
19395	367	35	of	of	IN
19395	367	36	double	double	JJ
19395	367	37	stars	star	NNS
19395	367	38	so	so	RB
19395	367	39	close	close	RB
19395	367	40	together	together	RB
19395	367	41	that	that	IN
19395	367	42	no	no	DT
19395	367	43	telescope	telescope	NN
19395	367	44	can	can	MD
19395	367	45	separate	separate	VB
19395	367	46	them	-PRON-	PRP
19395	367	47	.	.	.
19395	368	1	He	-PRON-	PRP
19395	368	2	also	also	RB
19395	368	3	showed	show	VBD
19395	368	4	how	how	WRB
19395	368	5	the	the	DT
19395	368	6	same	same	JJ
19395	368	7	principle	principle	NN
19395	368	8	could	could	MD
19395	368	9	be	be	VB
19395	368	10	applied	apply	VBN
19395	368	11	to	to	IN
19395	368	12	the	the	DT
19395	368	13	measurement	measurement	NN
19395	368	14	of	of	IN
19395	368	15	star	star	NNP
19395	368	16	diameters	diameter	NNS
19395	368	17	if	if	IN
19395	368	18	a	a	DT
19395	368	19	sufficiently	sufficiently	RB
19395	368	20	large	large	JJ
19395	368	21	interferometer	interferometer	NN
19395	368	22	could	could	MD
19395	368	23	be	be	VB
19395	368	24	built	build	VBN
19395	368	25	for	for	IN
19395	368	26	this	this	DT
19395	368	27	purpose	purpose	NN
19395	368	28	,	,	,
19395	368	29	and	and	CC
19395	368	30	developed	develop	VBD
19395	368	31	the	the	DT
19395	368	32	theory	theory	NN
19395	368	33	much	much	RB
19395	368	34	more	more	RBR
19395	368	35	completely	completely	RB
19395	368	36	than	than	IN
19395	368	37	Stéphan	Stéphan	NNP
19395	368	38	had	have	VBD
19395	368	39	done	do	VBN
19395	368	40	.	.	.
19395	369	1	A	a	DT
19395	369	2	year	year	NN
19395	369	3	later	later	RBR
19395	369	4	he	-PRON-	PRP
19395	369	5	measured	measure	VBD
19395	369	6	the	the	DT
19395	369	7	diameters	diameter	NNS
19395	369	8	of	of	IN
19395	369	9	Jupiter	Jupiter	NNP
19395	369	10	's	's	POS
19395	369	11	satellites	satellite	NNS
19395	369	12	by	by	IN
19395	369	13	this	this	DT
19395	369	14	means	mean	NNS
19395	369	15	at	at	IN
19395	369	16	the	the	DT
19395	369	17	Lick	Lick	NNP
19395	369	18	Observatory	Observatory	NNP
19395	369	19	.	.	.
19395	370	1	But	but	CC
19395	370	2	nearly	nearly	RB
19395	370	3	thirty	thirty	CD
19395	370	4	years	year	NNS
19395	370	5	elapsed	elapse	VBN
19395	370	6	before	before	IN
19395	370	7	the	the	DT
19395	370	8	next	next	JJ
19395	370	9	step	step	NN
19395	370	10	was	be	VBD
19395	370	11	taken	take	VBN
19395	370	12	.	.	.
19395	371	1	Two	two	CD
19395	371	2	causes	cause	NNS
19395	371	3	have	have	VBP
19395	371	4	doubtless	doubtless	RB
19395	371	5	contributed	contribute	VBN
19395	371	6	to	to	IN
19395	371	7	this	this	DT
19395	371	8	delay	delay	NN
19395	371	9	.	.	.
19395	372	1	Both	both	DT
19395	372	2	theory	theory	NN
19395	372	3	and	and	CC
19395	372	4	experiment	experiment	NN
19395	372	5	have	have	VBP
19395	372	6	demonstrated	demonstrate	VBN
19395	372	7	the	the	DT
19395	372	8	extreme	extreme	JJ
19395	372	9	sensitiveness	sensitiveness	NN
19395	372	10	of	of	IN
19395	372	11	the	the	DT
19395	372	12	"	"	``
19395	372	13	interference	interference	NN
19395	372	14	fringes	fringe	NNS
19395	372	15	,	,	,
19395	372	16	"	"	''
19395	372	17	on	on	IN
19395	372	18	the	the	DT
19395	372	19	observation	observation	NN
19395	372	20	of	of	IN
19395	372	21	which	which	WDT
19395	372	22	the	the	DT
19395	372	23	method	method	NN
19395	372	24	depends	depend	VBZ
19395	372	25	,	,	,
19395	372	26	and	and	CC
19395	372	27	it	-PRON-	PRP
19395	372	28	was	be	VBD
19395	372	29	generally	generally	RB
19395	372	30	supposed	suppose	VBN
19395	372	31	by	by	IN
19395	372	32	astronomers	astronomer	NNS
19395	372	33	that	that	IN
19395	372	34	disturbances	disturbance	NNS
19395	372	35	in	in	IN
19395	372	36	the	the	DT
19395	372	37	earth	earth	NN
19395	372	38	's	's	POS
19395	372	39	atmosphere	atmosphere	NN
19395	372	40	would	would	MD
19395	372	41	prevent	prevent	VB
19395	372	42	them	-PRON-	PRP
19395	372	43	from	from	IN
19395	372	44	being	be	VBG
19395	372	45	clearly	clearly	RB
19395	372	46	seen	see	VBN
19395	372	47	with	with	IN
19395	372	48	large	large	JJ
19395	372	49	telescopes	telescope	NNS
19395	372	50	.	.	.
19395	373	1	Furthermore	furthermore	RB
19395	373	2	,	,	,
19395	373	3	a	a	DT
19395	373	4	very	very	RB
19395	373	5	large	large	JJ
19395	373	6	interferometer	interferometer	NN
19395	373	7	,	,	,
19395	373	8	too	too	RB
19395	373	9	large	large	JJ
19395	373	10	to	to	TO
19395	373	11	be	be	VB
19395	373	12	carried	carry	VBN
19395	373	13	by	by	IN
19395	373	14	any	any	DT
19395	373	15	existing	exist	VBG
19395	373	16	telescope	telescope	NN
19395	373	17	,	,	,
19395	373	18	was	be	VBD
19395	373	19	required	require	VBN
19395	373	20	for	for	IN
19395	373	21	the	the	DT
19395	373	22	star	star	NN
19395	373	23	-	-	HYPH
19395	373	24	diameter	diameter	NN
19395	373	25	work	work	NN
19395	373	26	,	,	,
19395	373	27	though	though	IN
19395	373	28	close	close	JJ
19395	373	29	double	double	JJ
19395	373	30	stars	star	NNS
19395	373	31	could	could	MD
19395	373	32	have	have	VB
19395	373	33	been	be	VBN
19395	373	34	easily	easily	RB
19395	373	35	studied	study	VBN
19395	373	36	by	by	IN
19395	373	37	this	this	DT
19395	373	38	device	device	NN
19395	373	39	with	with	IN
19395	373	40	several	several	JJ
19395	373	41	of	of	IN
19395	373	42	the	the	DT
19395	373	43	large	large	JJ
19395	373	44	telescopes	telescope	NNS
19395	373	45	of	of	IN
19395	373	46	the	the	DT
19395	373	47	early	early	JJ
19395	373	48	nineties	ninety	NNS
19395	373	49	.	.	.
19395	374	1	But	but	CC
19395	374	2	whatever	whatever	WDT
19395	374	3	the	the	DT
19395	374	4	reasons	reason	NNS
19395	374	5	,	,	,
19395	374	6	a	a	DT
19395	374	7	powerful	powerful	JJ
19395	374	8	method	method	NN
19395	374	9	of	of	IN
19395	374	10	research	research	NN
19395	374	11	lay	lie	VBD
19395	374	12	unused	unused	JJ
19395	374	13	.	.	.
19395	375	1	The	the	DT
19395	375	2	approaching	approaching	JJ
19395	375	3	completion	completion	NN
19395	375	4	of	of	IN
19395	375	5	the	the	DT
19395	375	6	100-inch	100-inch	CD
19395	375	7	telescope	telescope	NN
19395	375	8	of	of	IN
19395	375	9	the	the	DT
19395	375	10	Mount	Mount	NNP
19395	375	11	Wilson	Wilson	NNP
19395	375	12	Observatory	Observatory	NNP
19395	375	13	led	lead	VBD
19395	375	14	me	-PRON-	PRP
19395	375	15	to	to	TO
19395	375	16	suggest	suggest	VB
19395	375	17	to	to	IN
19395	375	18	Professor	Professor	NNP
19395	375	19	Michelson	Michelson	NNP
19395	375	20	,	,	,
19395	375	21	before	before	IN
19395	375	22	the	the	DT
19395	375	23	United	United	NNP
19395	375	24	States	States	NNP
19395	375	25	entered	enter	VBD
19395	375	26	the	the	DT
19395	375	27	war	war	NN
19395	375	28	,	,	,
19395	375	29	that	that	IN
19395	375	30	the	the	DT
19395	375	31	method	method	NN
19395	375	32	be	be	VB
19395	375	33	thoroughly	thoroughly	RB
19395	375	34	tested	test	VBN
19395	375	35	under	under	IN
19395	375	36	the	the	DT
19395	375	37	favorable	favorable	JJ
19395	375	38	atmospheric	atmospheric	JJ
19395	375	39	conditions	condition	NNS
19395	375	40	of	of	IN
19395	375	41	Southern	Southern	NNP
19395	375	42	California	California	NNP
19395	375	43	.	.	.
19395	376	1	He	-PRON-	PRP
19395	376	2	was	be	VBD
19395	376	3	at	at	IN
19395	376	4	that	that	DT
19395	376	5	time	time	NN
19395	376	6	at	at	IN
19395	376	7	work	work	NN
19395	376	8	on	on	IN
19395	376	9	a	a	DT
19395	376	10	special	special	JJ
19395	376	11	form	form	NN
19395	376	12	of	of	IN
19395	376	13	interferometer	interferometer	NN
19395	376	14	,	,	,
19395	376	15	designed	design	VBN
19395	376	16	to	to	TO
19395	376	17	determine	determine	VB
19395	376	18	whether	whether	IN
19395	376	19	atmospheric	atmospheric	JJ
19395	376	20	disturbances	disturbance	NNS
19395	376	21	could	could	MD
19395	376	22	be	be	VB
19395	376	23	disregarded	disregard	VBN
19395	376	24	in	in	IN
19395	376	25	planning	plan	VBG
19395	376	26	large	large	JJ
19395	376	27	-	-	HYPH
19395	376	28	scale	scale	NN
19395	376	29	experiments	experiment	NNS
19395	376	30	.	.	.
19395	377	1	But	but	CC
19395	377	2	the	the	DT
19395	377	3	war	war	NN
19395	377	4	intervened	intervene	VBD
19395	377	5	,	,	,
19395	377	6	and	and	CC
19395	377	7	all	all	DT
19395	377	8	of	of	IN
19395	377	9	our	-PRON-	PRP$
19395	377	10	efforts	effort	NNS
19395	377	11	were	be	VBD
19395	377	12	concentrated	concentrate	VBN
19395	377	13	for	for	IN
19395	377	14	two	two	CD
19395	377	15	years	year	NNS
19395	377	16	on	on	IN
19395	377	17	the	the	DT
19395	377	18	solution	solution	NN
19395	377	19	of	of	IN
19395	377	20	war	war	NN
19395	377	21	problems	problem	NNS
19395	377	22	.	.	.
19395	378	1	[	[	-LRB-
19395	378	2	*	*	NFP
19395	378	3	]	]	-RRB-
19395	378	4	In	in	IN
19395	378	5	1919	1919	CD
19395	378	6	,	,	,
19395	378	7	as	as	RB
19395	378	8	soon	soon	RB
19395	378	9	as	as	IN
19395	378	10	the	the	DT
19395	378	11	100-inch	100-inch	CD
19395	378	12	telescope	telescope	NN
19395	378	13	had	have	VBD
19395	378	14	been	be	VBN
19395	378	15	completed	complete	VBN
19395	378	16	and	and	CC
19395	378	17	tested	test	VBN
19395	378	18	,	,	,
19395	378	19	the	the	DT
19395	378	20	work	work	NN
19395	378	21	was	be	VBD
19395	378	22	resumed	resume	VBN
19395	378	23	on	on	IN
19395	378	24	Mount	Mount	NNP
19395	378	25	Wilson	Wilson	NNP
19395	378	26	.	.	.
19395	379	1	[	[	-LRB-
19395	379	2	Footnote	footnote	NN
19395	379	3	*	*	NFP
19395	379	4	:	:	:
19395	379	5	Professor	Professor	NNP
19395	379	6	Michelson	Michelson	NNP
19395	379	7	's	's	POS
19395	379	8	most	most	RBS
19395	379	9	important	important	JJ
19395	379	10	contribution	contribution	NN
19395	379	11	during	during	IN
19395	379	12	the	the	DT
19395	379	13	war	war	NN
19395	379	14	period	period	NN
19395	379	15	was	be	VBD
19395	379	16	a	a	DT
19395	379	17	new	new	JJ
19395	379	18	and	and	CC
19395	379	19	very	very	RB
19395	379	20	efficient	efficient	JJ
19395	379	21	form	form	NN
19395	379	22	of	of	IN
19395	379	23	range	range	NN
19395	379	24	-	-	HYPH
19395	379	25	finder	finder	NN
19395	379	26	,	,	,
19395	379	27	adopted	adopt	VBN
19395	379	28	for	for	IN
19395	379	29	use	use	NN
19395	379	30	by	by	IN
19395	379	31	the	the	DT
19395	379	32	U.	U.	NNP
19395	379	33	S.	S.	NNP
19395	380	1	Navy	Navy	NNP
19395	380	2	.	.	.
19395	380	3	]	]	-RRB-
19395	381	1	A	a	DT
19395	381	2	LABORATORY	LABORATORY	NNP
19395	381	3	EXPERIMENT	experiment	NN
19395	381	4	The	the	DT
19395	381	5	principle	principle	NN
19395	381	6	of	of	IN
19395	381	7	the	the	DT
19395	381	8	method	method	NN
19395	381	9	can	can	MD
19395	381	10	be	be	VB
19395	381	11	most	most	RBS
19395	381	12	readily	readily	RB
19395	381	13	seen	see	VBN
19395	381	14	by	by	IN
19395	381	15	the	the	DT
19395	381	16	aid	aid	NN
19395	381	17	of	of	IN
19395	381	18	an	an	DT
19395	381	19	experiment	experiment	NN
19395	381	20	which	which	WDT
19395	381	21	any	any	DT
19395	381	22	one	one	NN
19395	381	23	can	can	MD
19395	381	24	easily	easily	RB
19395	381	25	perform	perform	VB
19395	381	26	for	for	IN
19395	381	27	himself	-PRON-	PRP
19395	381	28	with	with	IN
19395	381	29	simple	simple	JJ
19395	381	30	apparatus	apparatus	NN
19395	381	31	.	.	.
19395	382	1	Make	make	VB
19395	382	2	a	a	DT
19395	382	3	narrow	narrow	JJ
19395	382	4	slit	slit	NN
19395	382	5	,	,	,
19395	382	6	a	a	DT
19395	382	7	few	few	JJ
19395	382	8	thousandths	thousandth	NNS
19395	382	9	of	of	IN
19395	382	10	an	an	DT
19395	382	11	inch	inch	NN
19395	382	12	in	in	IN
19395	382	13	width	width	NN
19395	382	14	,	,	,
19395	382	15	in	in	IN
19395	382	16	a	a	DT
19395	382	17	sheet	sheet	NN
19395	382	18	of	of	IN
19395	382	19	black	black	JJ
19395	382	20	paper	paper	NN
19395	382	21	,	,	,
19395	382	22	and	and	CC
19395	382	23	support	support	VB
19395	382	24	it	-PRON-	PRP
19395	382	25	vertically	vertically	RB
19395	382	26	before	before	IN
19395	382	27	a	a	DT
19395	382	28	brilliant	brilliant	JJ
19395	382	29	source	source	NN
19395	382	30	of	of	IN
19395	382	31	light	light	NN
19395	382	32	.	.	.
19395	383	1	Observe	observe	VB
19395	383	2	this	this	DT
19395	383	3	from	from	IN
19395	383	4	a	a	DT
19395	383	5	distance	distance	NN
19395	383	6	of	of	IN
19395	383	7	40	40	CD
19395	383	8	or	or	CC
19395	383	9	50	50	CD
19395	383	10	feet	foot	NNS
19395	383	11	with	with	IN
19395	383	12	a	a	DT
19395	383	13	small	small	JJ
19395	383	14	telescope	telescope	NN
19395	383	15	magnifying	magnify	VBG
19395	383	16	about	about	IN
19395	383	17	30	30	CD
19395	383	18	diameters	diameter	NNS
19395	383	19	.	.	.
19395	384	1	The	the	DT
19395	384	2	object	object	NN
19395	384	3	-	-	HYPH
19395	384	4	glass	glass	NN
19395	384	5	of	of	IN
19395	384	6	the	the	DT
19395	384	7	telescope	telescope	NN
19395	384	8	should	should	MD
19395	384	9	be	be	VB
19395	384	10	covered	cover	VBN
19395	384	11	with	with	IN
19395	384	12	an	an	DT
19395	384	13	opaque	opaque	JJ
19395	384	14	cap	cap	NN
19395	384	15	,	,	,
19395	384	16	pierced	pierce	VBN
19395	384	17	by	by	IN
19395	384	18	two	two	CD
19395	384	19	circular	circular	JJ
19395	384	20	holes	hole	NNS
19395	384	21	about	about	RB
19395	384	22	one	one	CD
19395	384	23	-	-	HYPH
19395	384	24	eighth	eighth	JJ
19395	384	25	of	of	IN
19395	384	26	an	an	DT
19395	384	27	inch	inch	NN
19395	384	28	in	in	IN
19395	384	29	diameter	diameter	NN
19395	384	30	and	and	CC
19395	384	31	half	half	PDT
19395	384	32	an	an	DT
19395	384	33	inch	inch	NN
19395	384	34	apart	apart	RB
19395	384	35	.	.	.
19395	385	1	The	the	DT
19395	385	2	holes	hole	NNS
19395	385	3	should	should	MD
19395	385	4	be	be	VB
19395	385	5	on	on	IN
19395	385	6	opposite	opposite	JJ
19395	385	7	sides	side	NNS
19395	385	8	of	of	IN
19395	385	9	the	the	DT
19395	385	10	centre	centre	NN
19395	385	11	of	of	IN
19395	385	12	the	the	DT
19395	385	13	object	object	NN
19395	385	14	-	-	HYPH
19395	385	15	glass	glass	NN
19395	385	16	and	and	CC
19395	385	17	equidistant	equidistant	NN
19395	385	18	from	from	IN
19395	385	19	it	-PRON-	PRP
19395	385	20	,	,	,
19395	385	21	and	and	CC
19395	385	22	the	the	DT
19395	385	23	line	line	NN
19395	385	24	joining	join	VBG
19395	385	25	the	the	DT
19395	385	26	holes	hole	NNS
19395	385	27	should	should	MD
19395	385	28	be	be	VB
19395	385	29	horizontal	horizontal	JJ
19395	385	30	.	.	.
19395	386	1	When	when	WRB
19395	386	2	this	this	DT
19395	386	3	cap	cap	NN
19395	386	4	is	be	VBZ
19395	386	5	removed	remove	VBN
19395	386	6	the	the	DT
19395	386	7	slit	slit	NN
19395	386	8	appears	appear	VBZ
19395	386	9	as	as	IN
19395	386	10	a	a	DT
19395	386	11	narrow	narrow	JJ
19395	386	12	vertical	vertical	JJ
19395	386	13	band	band	NN
19395	386	14	with	with	IN
19395	386	15	much	much	JJ
19395	386	16	fainter	fainter	NN
19395	386	17	bands	band	NNS
19395	386	18	on	on	IN
19395	386	19	both	both	DT
19395	386	20	sides	side	NNS
19395	386	21	of	of	IN
19395	386	22	it	-PRON-	PRP
19395	386	23	.	.	.
19395	387	1	With	with	IN
19395	387	2	the	the	DT
19395	387	3	cap	cap	NN
19395	387	4	in	in	IN
19395	387	5	place	place	NN
19395	387	6	,	,	,
19395	387	7	the	the	DT
19395	387	8	central	central	JJ
19395	387	9	bright	bright	JJ
19395	387	10	band	band	NN
19395	387	11	appears	appear	VBZ
19395	387	12	to	to	TO
19395	387	13	be	be	VB
19395	387	14	ruled	rule	VBN
19395	387	15	with	with	IN
19395	387	16	narrow	narrow	JJ
19395	387	17	vertical	vertical	JJ
19395	387	18	lines	line	NNS
19395	387	19	or	or	CC
19395	387	20	fringes	fringe	NNS
19395	387	21	produced	produce	VBN
19395	387	22	by	by	IN
19395	387	23	the	the	DT
19395	387	24	"	"	``
19395	387	25	interference	interference	NN
19395	387	26	"	"	''
19395	387	27	[	[	-LRB-
19395	387	28	*	*	NFP
19395	387	29	]	]	-RRB-
19395	387	30	of	of	IN
19395	387	31	the	the	DT
19395	387	32	two	two	CD
19395	387	33	pencils	pencil	NNS
19395	387	34	of	of	IN
19395	387	35	light	light	NN
19395	387	36	coming	come	VBG
19395	387	37	through	through	IN
19395	387	38	different	different	JJ
19395	387	39	parts	part	NNS
19395	387	40	of	of	IN
19395	387	41	the	the	DT
19395	387	42	object	object	NN
19395	387	43	-	-	HYPH
19395	387	44	glass	glass	NN
19395	387	45	from	from	IN
19395	387	46	the	the	DT
19395	387	47	distant	distant	JJ
19395	387	48	slit	slit	NN
19395	387	49	.	.	.
19395	388	1	Cover	cover	VB
19395	388	2	one	one	CD
19395	388	3	of	of	IN
19395	388	4	the	the	DT
19395	388	5	holes	hole	NNS
19395	388	6	,	,	,
19395	388	7	and	and	CC
19395	388	8	the	the	DT
19395	388	9	fringes	fringe	NNS
19395	388	10	instantly	instantly	RB
19395	388	11	disappear	disappear	VBP
19395	388	12	.	.	.
19395	389	1	Their	-PRON-	PRP$
19395	389	2	production	production	NN
19395	389	3	requires	require	VBZ
19395	389	4	the	the	DT
19395	389	5	joint	joint	JJ
19395	389	6	effect	effect	NN
19395	389	7	of	of	IN
19395	389	8	the	the	DT
19395	389	9	two	two	CD
19395	389	10	light	light	NN
19395	389	11	-	-	HYPH
19395	389	12	pencils	pencil	NNS
19395	389	13	.	.	.
19395	390	1	[	[	-LRB-
19395	390	2	Footnote	footnote	NN
19395	390	3	*	*	NFP
19395	390	4	:	:	:
19395	390	5	For	for	IN
19395	390	6	an	an	DT
19395	390	7	explanation	explanation	NN
19395	390	8	of	of	IN
19395	390	9	the	the	DT
19395	390	10	phenomena	phenomenon	NNS
19395	390	11	of	of	IN
19395	390	12	interference	interference	NN
19395	390	13	,	,	,
19395	390	14	see	see	VB
19395	390	15	any	any	DT
19395	390	16	encyclopæedia	encyclopæedia	NN
19395	390	17	or	or	CC
19395	390	18	book	book	NN
19395	390	19	on	on	IN
19395	390	20	physics	physics	NN
19395	390	21	.	.	.
19395	390	22	]	]	-RRB-
19395	391	1	Now	now	RB
19395	391	2	suppose	suppose	VB
19395	391	3	the	the	DT
19395	391	4	two	two	CD
19395	391	5	holes	hole	NNS
19395	391	6	over	over	IN
19395	391	7	the	the	DT
19395	391	8	object	object	NN
19395	391	9	-	-	HYPH
19395	391	10	glass	glass	NN
19395	391	11	to	to	TO
19395	391	12	be	be	VB
19395	391	13	in	in	IN
19395	391	14	movable	movable	JJ
19395	391	15	plates	plate	NNS
19395	391	16	,	,	,
19395	391	17	so	so	IN
19395	391	18	that	that	IN
19395	391	19	their	-PRON-	PRP$
19395	391	20	distance	distance	NN
19395	391	21	apart	apart	RB
19395	391	22	can	can	MD
19395	391	23	be	be	VB
19395	391	24	varied	varied	JJ
19395	391	25	.	.	.
19395	392	1	As	as	IN
19395	392	2	they	-PRON-	PRP
19395	392	3	are	be	VBP
19395	392	4	gradually	gradually	RB
19395	392	5	separated	separate	VBN
19395	392	6	the	the	DT
19395	392	7	narrow	narrow	JJ
19395	392	8	vertical	vertical	JJ
19395	392	9	fringes	fringe	NNS
19395	392	10	become	become	VBP
19395	392	11	less	less	RBR
19395	392	12	and	and	CC
19395	392	13	less	less	RBR
19395	392	14	distinct	distinct	JJ
19395	392	15	,	,	,
19395	392	16	and	and	CC
19395	392	17	finally	finally	RB
19395	392	18	vanish	vanish	VB
19395	392	19	completely	completely	RB
19395	392	20	.	.	.
19395	393	1	Measure	measure	VB
19395	393	2	the	the	DT
19395	393	3	distance	distance	NN
19395	393	4	between	between	IN
19395	393	5	the	the	DT
19395	393	6	holes	hole	NNS
19395	393	7	and	and	CC
19395	393	8	divide	divide	VB
19395	393	9	this	this	DT
19395	393	10	by	by	IN
19395	393	11	the	the	DT
19395	393	12	wavelength	wavelength	NN
19395	393	13	of	of	IN
19395	393	14	light	light	NN
19395	393	15	,	,	,
19395	393	16	which	which	WDT
19395	393	17	we	-PRON-	PRP
19395	393	18	may	may	MD
19395	393	19	call	call	VB
19395	393	20	1/50000	1/50000	CD
19395	393	21	of	of	IN
19395	393	22	an	an	DT
19395	393	23	inch	inch	NN
19395	393	24	.	.	.
19395	394	1	The	the	DT
19395	394	2	result	result	NN
19395	394	3	is	be	VBZ
19395	394	4	the	the	DT
19395	394	5	angular	angular	JJ
19395	394	6	width	width	NN
19395	394	7	of	of	IN
19395	394	8	the	the	DT
19395	394	9	distant	distant	JJ
19395	394	10	slit	slit	NN
19395	394	11	.	.	.
19395	395	1	Knowing	know	VBG
19395	395	2	the	the	DT
19395	395	3	distance	distance	NN
19395	395	4	of	of	IN
19395	395	5	the	the	DT
19395	395	6	slit	slit	NN
19395	395	7	,	,	,
19395	395	8	we	-PRON-	PRP
19395	395	9	can	can	MD
19395	395	10	at	at	IN
19395	395	11	once	once	RB
19395	395	12	calculate	calculate	VB
19395	395	13	its	-PRON-	PRP$
19395	395	14	linear	linear	JJ
19395	395	15	width	width	NN
19395	395	16	.	.	.
19395	396	1	If	if	IN
19395	396	2	for	for	IN
19395	396	3	the	the	DT
19395	396	4	slit	slit	NN
19395	396	5	we	-PRON-	PRP
19395	396	6	substitute	substitute	VBP
19395	396	7	a	a	DT
19395	396	8	minute	minute	JJ
19395	396	9	circular	circular	JJ
19395	396	10	hole	hole	NN
19395	396	11	,	,	,
19395	396	12	the	the	DT
19395	396	13	method	method	NN
19395	396	14	of	of	IN
19395	396	15	measurement	measurement	NN
19395	396	16	remains	remain	VBZ
19395	396	17	the	the	DT
19395	396	18	same	same	JJ
19395	396	19	,	,	,
19395	396	20	but	but	CC
19395	396	21	the	the	DT
19395	396	22	angular	angular	JJ
19395	396	23	diameter	diameter	NN
19395	396	24	as	as	IN
19395	396	25	calculated	calculate	VBN
19395	396	26	above	above	RB
19395	396	27	must	must	MD
19395	396	28	be	be	VB
19395	396	29	multiplied	multiply	VBN
19395	396	30	by	by	IN
19395	396	31	1.22	1.22	CD
19395	396	32	.	.	.
19395	397	1	[	[	-LRB-
19395	397	2	*	*	NFP
19395	397	3	]	]	-RRB-
19395	397	4	[	[	-LRB-
19395	397	5	Footnote	footnote	NN
19395	397	6	*	*	NFP
19395	397	7	:	:	:
19395	397	8	More	more	RBR
19395	397	9	complete	complete	JJ
19395	397	10	details	detail	NNS
19395	397	11	may	may	MD
19395	397	12	be	be	VB
19395	397	13	found	find	VBN
19395	397	14	in	in	IN
19395	397	15	Michelson	Michelson	NNP
19395	397	16	's	's	POS
19395	397	17	Lowell	Lowell	NNP
19395	397	18	Lectures	Lectures	NNP
19395	397	19	on	on	IN
19395	397	20	"	"	``
19395	397	21	Light	light	NN
19395	397	22	-	-	HYPH
19395	397	23	Waves	wave	NNS
19395	397	24	and	and	CC
19395	397	25	Their	-PRON-	PRP$
19395	397	26	Uses	use	NNS
19395	397	27	,	,	,
19395	397	28	"	"	''
19395	397	29	University	University	NNP
19395	397	30	of	of	IN
19395	397	31	Chicago	Chicago	NNP
19395	397	32	Press	Press	NNP
19395	397	33	,	,	,
19395	397	34	1907	1907	CD
19395	397	35	.	.	.
19395	397	36	]	]	-RRB-
19395	398	1	To	to	TO
19395	398	2	measure	measure	VB
19395	398	3	the	the	DT
19395	398	4	diameter	diameter	NN
19395	398	5	of	of	IN
19395	398	6	a	a	DT
19395	398	7	star	star	NN
19395	398	8	we	-PRON-	PRP
19395	398	9	proceed	proceed	VBP
19395	398	10	in	in	IN
19395	398	11	a	a	DT
19395	398	12	similar	similar	JJ
19395	398	13	way	way	NN
19395	398	14	,	,	,
19395	398	15	but	but	CC
19395	398	16	,	,	,
19395	398	17	as	as	IN
19395	398	18	the	the	DT
19395	398	19	angle	angle	NN
19395	398	20	it	-PRON-	PRP
19395	398	21	subtends	subtend	VBZ
19395	398	22	is	be	VBZ
19395	398	23	so	so	RB
19395	398	24	small	small	JJ
19395	398	25	,	,	,
19395	398	26	we	-PRON-	PRP
19395	398	27	must	must	MD
19395	398	28	use	use	VB
19395	398	29	a	a	DT
19395	398	30	very	very	RB
19395	398	31	large	large	JJ
19395	398	32	telescope	telescope	NN
19395	398	33	,	,	,
19395	398	34	for	for	IN
19395	398	35	the	the	DT
19395	398	36	smaller	small	JJR
19395	398	37	the	the	DT
19395	398	38	angle	angle	NN
19395	398	39	the	the	DT
19395	398	40	farther	far	RBR
19395	398	41	apart	apart	RB
19395	398	42	must	must	MD
19395	398	43	be	be	VB
19395	398	44	the	the	DT
19395	398	45	two	two	CD
19395	398	46	holes	hole	NNS
19395	398	47	over	over	IN
19395	398	48	the	the	DT
19395	398	49	object	object	NN
19395	398	50	-	-	HYPH
19395	398	51	glass	glass	NN
19395	398	52	(	(	-LRB-
19395	398	53	or	or	CC
19395	398	54	the	the	DT
19395	398	55	mirror	mirror	NN
19395	398	56	,	,	,
19395	398	57	in	in	IN
19395	398	58	case	case	NN
19395	398	59	a	a	DT
19395	398	60	reflecting	reflect	VBG
19395	398	61	telescope	telescope	NN
19395	398	62	is	be	VBZ
19395	398	63	employed	employ	VBN
19395	398	64	)	)	-RRB-
19395	398	65	.	.	.
19395	399	1	In	in	IN
19395	399	2	fact	fact	NN
19395	399	3	,	,	,
19395	399	4	when	when	WRB
19395	399	5	the	the	DT
19395	399	6	holes	hole	NNS
19395	399	7	are	be	VBP
19395	399	8	moved	move	VBN
19395	399	9	apart	apart	RB
19395	399	10	to	to	IN
19395	399	11	the	the	DT
19395	399	12	full	full	JJ
19395	399	13	aperture	aperture	NN
19395	399	14	of	of	IN
19395	399	15	the	the	DT
19395	399	16	100-inch	100-inch	CD
19395	399	17	Hooker	Hooker	NNP
19395	399	18	telescope	telescope	NN
19395	399	19	,	,	,
19395	399	20	the	the	DT
19395	399	21	interference	interference	NN
19395	399	22	fringes	fringe	NNS
19395	399	23	are	be	VBP
19395	399	24	still	still	RB
19395	399	25	visible	visible	JJ
19395	399	26	even	even	RB
19395	399	27	with	with	IN
19395	399	28	the	the	DT
19395	399	29	star	star	NN
19395	399	30	Betelgeuse	Betelgeuse	NNP
19395	399	31	,	,	,
19395	399	32	though	though	IN
19395	399	33	its	-PRON-	PRP$
19395	399	34	angular	angular	JJ
19395	399	35	diameter	diameter	NN
19395	399	36	is	be	VBZ
19395	399	37	perhaps	perhaps	RB
19395	399	38	as	as	RB
19395	399	39	great	great	JJ
19395	399	40	as	as	IN
19395	399	41	that	that	DT
19395	399	42	of	of	IN
19395	399	43	any	any	DT
19395	399	44	other	other	JJ
19395	399	45	star	star	NN
19395	399	46	.	.	.
19395	400	1	Thus	thus	RB
19395	400	2	,	,	,
19395	400	3	we	-PRON-	PRP
19395	400	4	must	must	MD
19395	400	5	build	build	VB
19395	400	6	an	an	DT
19395	400	7	attachment	attachment	NN
19395	400	8	for	for	IN
19395	400	9	the	the	DT
19395	400	10	telescope	telescope	NN
19395	400	11	,	,	,
19395	400	12	so	so	RB
19395	400	13	arranged	arrange	VBD
19395	400	14	as	as	IN
19395	400	15	to	to	TO
19395	400	16	permit	permit	VB
19395	400	17	us	-PRON-	PRP
19395	400	18	to	to	TO
19395	400	19	move	move	VB
19395	400	20	the	the	DT
19395	400	21	openings	opening	NNS
19395	400	22	still	still	RB
19395	400	23	farther	far	RBR
19395	400	24	apart	apart	RB
19395	400	25	.	.	.
19395	401	1	[	[	-LRB-
19395	401	2	Illustration	illustration	NN
19395	401	3	:	:	:
19395	401	4	Fig	Fig	NNP
19395	401	5	.	.	.
19395	402	1	23	23	CD
19395	402	2	.	.	.
19395	403	1	Diagram	Diagram	NNP
19395	403	2	showing	show	VBG
19395	403	3	outline	outline	NN
19395	403	4	of	of	IN
19395	403	5	the	the	DT
19395	403	6	100-inch	100-inch	CD
19395	403	7	Hooker	Hooker	NNP
19395	403	8	telescope	telescope	NN
19395	403	9	,	,	,
19395	403	10	and	and	CC
19395	403	11	path	path	NN
19395	403	12	of	of	IN
19395	403	13	the	the	DT
19395	403	14	two	two	CD
19395	403	15	pencils	pencil	NNS
19395	403	16	of	of	IN
19395	403	17	light	light	NN
19395	403	18	from	from	IN
19395	403	19	a	a	DT
19395	403	20	star	star	NN
19395	403	21	when	when	WRB
19395	403	22	under	under	IN
19395	403	23	observation	observation	NN
19395	403	24	with	with	IN
19395	403	25	the	the	DT
19395	403	26	20-foot	20-foot	CD
19395	403	27	Michelson	Michelson	NNP
19395	403	28	interferometer	interferometer	NN
19395	403	29	.	.	.
19395	404	1	A	a	DT
19395	404	2	photograph	photograph	NN
19395	404	3	of	of	IN
19395	404	4	the	the	DT
19395	404	5	interferometer	interferometer	NN
19395	404	6	is	be	VBZ
19395	404	7	shown	show	VBN
19395	404	8	in	in	IN
19395	404	9	Fig	Fig	NNP
19395	404	10	.	.	.
19395	405	1	24	24	CD
19395	405	2	.	.	.
19395	405	3	]	]	-RRB-
19395	406	1	THE	the	DT
19395	406	2	20-FOOT	20-foot	CD
19395	406	3	INSTRUMENT	INSTRUMENT	VBD
19395	406	4	The	the	DT
19395	406	5	20-foot	20-foot	CD
19395	406	6	interferometer	interferometer	NN
19395	406	7	designed	design	VBN
19395	406	8	by	by	IN
19395	406	9	Messrs.	Messrs.	NNPS
19395	406	10	Michelson	Michelson	NNP
19395	406	11	and	and	CC
19395	406	12	Pease	Pease	NNP
19395	406	13	,	,	,
19395	406	14	and	and	CC
19395	406	15	constructed	construct	VBN
19395	406	16	in	in	IN
19395	406	17	the	the	DT
19395	406	18	Mount	Mount	NNP
19395	406	19	Wilson	Wilson	NNP
19395	406	20	Observatory	Observatory	NNP
19395	406	21	instrument	instrument	NN
19395	406	22	-	-	HYPH
19395	406	23	shop	shop	NN
19395	406	24	,	,	,
19395	406	25	is	be	VBZ
19395	406	26	shown	show	VBN
19395	406	27	in	in	IN
19395	406	28	the	the	DT
19395	406	29	diagram	diagram	NN
19395	406	30	(	(	-LRB-
19395	406	31	Fig	fig	NN
19395	406	32	.	.	.
19395	407	1	23	23	CD
19395	407	2	)	)	-RRB-
19395	407	3	and	and	CC
19395	407	4	in	in	IN
19395	407	5	a	a	DT
19395	407	6	photograph	photograph	NN
19395	407	7	of	of	IN
19395	407	8	the	the	DT
19395	407	9	upper	upper	JJ
19395	407	10	end	end	NN
19395	407	11	of	of	IN
19395	407	12	the	the	DT
19395	407	13	skeleton	skeleton	NN
19395	407	14	tube	tube	NN
19395	407	15	of	of	IN
19395	407	16	the	the	DT
19395	407	17	telescope	telescope	NN
19395	407	18	(	(	-LRB-
19395	407	19	Fig	fig	NN
19395	407	20	.	.	.
19395	408	1	24	24	CD
19395	408	2	)	)	-RRB-
19395	408	3	.	.	.
19395	409	1	The	the	DT
19395	409	2	light	light	NN
19395	409	3	from	from	IN
19395	409	4	the	the	DT
19395	409	5	star	star	NN
19395	409	6	is	be	VBZ
19395	409	7	received	receive	VBN
19395	409	8	by	by	IN
19395	409	9	two	two	CD
19395	409	10	flat	flat	JJ
19395	409	11	mirrors	mirror	NNS
19395	409	12	(	(	-LRB-
19395	409	13	Ml	Ml	NNP
19395	409	14	,	,	,
19395	409	15	M4	M4	NNP
19395	409	16	)	)	-RRB-
19395	409	17	which	which	WDT
19395	409	18	project	project	NN
19395	409	19	beyond	beyond	IN
19395	409	20	the	the	DT
19395	409	21	tube	tube	NN
19395	409	22	and	and	CC
19395	409	23	can	can	MD
19395	409	24	be	be	VB
19395	409	25	moved	move	VBN
19395	409	26	apart	apart	RB
19395	409	27	along	along	IN
19395	409	28	the	the	DT
19395	409	29	supporting	support	VBG
19395	409	30	arm	arm	NN
19395	409	31	.	.	.
19395	410	1	These	these	DT
19395	410	2	take	take	VBP
19395	410	3	the	the	DT
19395	410	4	place	place	NN
19395	410	5	of	of	IN
19395	410	6	the	the	DT
19395	410	7	two	two	CD
19395	410	8	holes	hole	NNS
19395	410	9	over	over	IN
19395	410	10	the	the	DT
19395	410	11	object	object	NN
19395	410	12	-	-	HYPH
19395	410	13	glass	glass	NN
19395	410	14	in	in	IN
19395	410	15	our	-PRON-	PRP$
19395	410	16	experiment	experiment	NN
19395	410	17	.	.	.
19395	411	1	From	from	IN
19395	411	2	these	these	DT
19395	411	3	mirrors	mirror	NNS
19395	411	4	the	the	DT
19395	411	5	light	light	NN
19395	411	6	is	be	VBZ
19395	411	7	reflected	reflect	VBN
19395	411	8	to	to	IN
19395	411	9	a	a	DT
19395	411	10	second	second	JJ
19395	411	11	pair	pair	NN
19395	411	12	of	of	IN
19395	411	13	flat	flat	JJ
19395	411	14	mirrors	mirror	NNS
19395	411	15	(	(	-LRB-
19395	411	16	M2	M2	NNP
19395	411	17	,	,	,
19395	411	18	M3	M3	NNP
19395	411	19	)	)	-RRB-
19395	411	20	,	,	,
19395	411	21	which	which	WDT
19395	411	22	send	send	VBP
19395	411	23	it	-PRON-	PRP
19395	411	24	toward	toward	IN
19395	411	25	the	the	DT
19395	411	26	100-inch	100-inch	CD
19395	411	27	concave	concave	NNP
19395	411	28	mirror	mirror	NNP
19395	411	29	(	(	-LRB-
19395	411	30	M5	M5	NNP
19395	411	31	)	)	-RRB-
19395	411	32	at	at	IN
19395	411	33	the	the	DT
19395	411	34	bottom	bottom	NN
19395	411	35	of	of	IN
19395	411	36	the	the	DT
19395	411	37	telescope	telescope	NN
19395	411	38	tube	tube	NN
19395	411	39	.	.	.
19395	412	1	After	after	IN
19395	412	2	this	this	DT
19395	412	3	the	the	DT
19395	412	4	course	course	NN
19395	412	5	of	of	IN
19395	412	6	the	the	DT
19395	412	7	light	light	NN
19395	412	8	is	be	VBZ
19395	412	9	exactly	exactly	RB
19395	412	10	as	as	IN
19395	412	11	it	-PRON-	PRP
19395	412	12	would	would	MD
19395	412	13	be	be	VB
19395	412	14	if	if	IN
19395	412	15	the	the	DT
19395	412	16	mirrors	mirror	NNS
19395	412	17	M2	M2	NNP
19395	412	18	,	,	,
19395	412	19	M3	M3	NNP
19395	412	20	were	be	VBD
19395	412	21	replaced	replace	VBN
19395	412	22	by	by	IN
19395	412	23	two	two	CD
19395	412	24	holes	hole	NNS
19395	412	25	over	over	IN
19395	412	26	the	the	DT
19395	412	27	100-inch	100-inch	CD
19395	412	28	mirror	mirror	NN
19395	412	29	.	.	.
19395	413	1	It	-PRON-	PRP
19395	413	2	is	be	VBZ
19395	413	3	reflected	reflect	VBN
19395	413	4	to	to	IN
19395	413	5	the	the	DT
19395	413	6	convex	convex	NNP
19395	413	7	mirror	mirror	NN
19395	413	8	(	(	-LRB-
19395	413	9	M6	M6	NNP
19395	413	10	)	)	-RRB-
19395	413	11	,	,	,
19395	413	12	then	then	RB
19395	413	13	back	back	RB
19395	413	14	in	in	IN
19395	413	15	a	a	DT
19395	413	16	less	less	RBR
19395	413	17	rapidly	rapidly	RB
19395	413	18	convergent	convergent	JJ
19395	413	19	beam	beam	NN
19395	413	20	toward	toward	IN
19395	413	21	the	the	DT
19395	413	22	large	large	JJ
19395	413	23	mirror	mirror	NN
19395	413	24	.	.	.
19395	414	1	Before	before	IN
19395	414	2	reaching	reach	VBG
19395	414	3	it	-PRON-	PRP
19395	414	4	the	the	DT
19395	414	5	light	light	NN
19395	414	6	is	be	VBZ
19395	414	7	caught	catch	VBN
19395	414	8	by	by	IN
19395	414	9	the	the	DT
19395	414	10	plane	plane	NN
19395	414	11	mirror	mirror	NN
19395	414	12	(	(	-LRB-
19395	414	13	M7	m7	NN
19395	414	14	)	)	-RRB-
19395	414	15	and	and	CC
19395	414	16	reflected	reflect	VBD
19395	414	17	through	through	IN
19395	414	18	an	an	DT
19395	414	19	opening	opening	NN
19395	414	20	at	at	IN
19395	414	21	the	the	DT
19395	414	22	side	side	NN
19395	414	23	of	of	IN
19395	414	24	the	the	DT
19395	414	25	telescope	telescope	NN
19395	414	26	tube	tube	NN
19395	414	27	to	to	IN
19395	414	28	the	the	DT
19395	414	29	eye	eye	NN
19395	414	30	-	-	HYPH
19395	414	31	piece	piece	NN
19395	414	32	E.	E.	NNP
19395	414	33	Here	here	RB
19395	414	34	the	the	DT
19395	414	35	fringes	fringe	NNS
19395	414	36	are	be	VBP
19395	414	37	observed	observe	VBN
19395	414	38	with	with	IN
19395	414	39	a	a	DT
19395	414	40	magnification	magnification	NN
19395	414	41	ranging	range	VBG
19395	414	42	from	from	IN
19395	414	43	1,500	1,500	CD
19395	414	44	to	to	IN
19395	414	45	3,000	3,000	CD
19395	414	46	diameters	diameter	NNS
19395	414	47	.	.	.
19395	415	1	[	[	-LRB-
19395	415	2	Illustration	illustration	NN
19395	415	3	:	:	:
19395	415	4	Fig	Fig	NNP
19395	415	5	.	.	.
19395	416	1	24	24	CD
19395	416	2	.	.	.
19395	417	1	Twenty	twenty	CD
19395	417	2	-	-	HYPH
19395	417	3	foot	foot	NN
19395	417	4	Michelson	Michelson	NNP
19395	417	5	interferometer	interferometer	NN
19395	417	6	for	for	IN
19395	417	7	measuring	measure	VBG
19395	417	8	star	star	NN
19395	417	9	diameters	diameter	NNS
19395	417	10	,	,	,
19395	417	11	attached	attach	VBN
19395	417	12	to	to	IN
19395	417	13	upper	upper	JJ
19395	417	14	end	end	NN
19395	417	15	of	of	IN
19395	417	16	the	the	DT
19395	417	17	skeleton	skeleton	NN
19395	417	18	tube	tube	NN
19395	417	19	of	of	IN
19395	417	20	the	the	DT
19395	417	21	100-inch	100-inch	CD
19395	417	22	Hooker	Hooker	NNP
19395	417	23	telescope	telescope	NN
19395	417	24	.	.	.
19395	418	1	The	the	DT
19395	418	2	path	path	NN
19395	418	3	of	of	IN
19395	418	4	the	the	DT
19395	418	5	two	two	CD
19395	418	6	pencils	pencil	NNS
19395	418	7	of	of	IN
19395	418	8	light	light	NN
19395	418	9	from	from	IN
19395	418	10	the	the	DT
19395	418	11	star	star	NN
19395	418	12	is	be	VBZ
19395	418	13	shown	show	VBN
19395	418	14	in	in	IN
19395	418	15	Fig	Fig	NNP
19395	418	16	.	.	.
19395	419	1	23	23	CD
19395	419	2	.	.	.
19395	420	1	For	for	IN
19395	420	2	a	a	DT
19395	420	3	photograph	photograph	NN
19395	420	4	of	of	IN
19395	420	5	the	the	DT
19395	420	6	entire	entire	JJ
19395	420	7	telescope	telescope	NN
19395	420	8	,	,	,
19395	420	9	see	see	VB
19395	420	10	Fig	Fig	NNP
19395	420	11	.	.	.
19395	421	1	4	4	LS
19395	421	2	.	.	.
19395	421	3	]	]	-RRB-
19395	422	1	In	in	IN
19395	422	2	the	the	DT
19395	422	3	practical	practical	JJ
19395	422	4	application	application	NN
19395	422	5	of	of	IN
19395	422	6	this	this	DT
19395	422	7	method	method	NN
19395	422	8	to	to	IN
19395	422	9	the	the	DT
19395	422	10	measurement	measurement	NN
19395	422	11	of	of	IN
19395	422	12	star	star	NNP
19395	422	13	diameters	diameters	NNPS
19395	422	14	,	,	,
19395	422	15	the	the	DT
19395	422	16	chief	chief	JJ
19395	422	17	problem	problem	NN
19395	422	18	was	be	VBD
19395	422	19	whether	whether	IN
19395	422	20	the	the	DT
19395	422	21	atmosphere	atmosphere	NN
19395	422	22	would	would	MD
19395	422	23	be	be	VB
19395	422	24	quiet	quiet	JJ
19395	422	25	enough	enough	RB
19395	422	26	to	to	TO
19395	422	27	permit	permit	VB
19395	422	28	sharp	sharp	JJ
19395	422	29	interference	interference	NN
19395	422	30	fringes	fringe	NNS
19395	422	31	to	to	TO
19395	422	32	be	be	VB
19395	422	33	produced	produce	VBN
19395	422	34	with	with	IN
19395	422	35	light	light	NN
19395	422	36	-	-	HYPH
19395	422	37	pencils	pencil	NNS
19395	422	38	more	more	JJR
19395	422	39	than	than	IN
19395	422	40	100	100	CD
19395	422	41	inches	inch	NNS
19395	422	42	apart	apart	RB
19395	422	43	.	.	.
19395	423	1	After	after	IN
19395	423	2	successful	successful	JJ
19395	423	3	preliminary	preliminary	JJ
19395	423	4	tests	test	NNS
19395	423	5	with	with	IN
19395	423	6	the	the	DT
19395	423	7	40-inch	40-inch	CD
19395	423	8	refracting	refracting	NN
19395	423	9	telescope	telescope	NN
19395	423	10	of	of	IN
19395	423	11	the	the	DT
19395	423	12	Yerkes	Yerkes	NNP
19395	423	13	Observatory	Observatory	NNP
19395	423	14	,	,	,
19395	423	15	Professor	Professor	NNP
19395	423	16	Michelson	Michelson	NNP
19395	423	17	made	make	VBD
19395	423	18	the	the	DT
19395	423	19	first	first	JJ
19395	423	20	attempt	attempt	NN
19395	423	21	to	to	TO
19395	423	22	see	see	VB
19395	423	23	the	the	DT
19395	423	24	fringes	fringe	NNS
19395	423	25	with	with	IN
19395	423	26	the	the	DT
19395	423	27	60-inch	60-inch	CD
19395	423	28	and	and	CC
19395	423	29	100-inch	100-inch	CD
19395	423	30	reflectors	reflector	NNS
19395	423	31	on	on	IN
19395	423	32	Mount	Mount	NNP
19395	423	33	Wilson	Wilson	NNP
19395	423	34	in	in	IN
19395	423	35	September	September	NNP
19395	423	36	,	,	,
19395	423	37	1919	1919	CD
19395	423	38	.	.	.
19395	424	1	He	-PRON-	PRP
19395	424	2	was	be	VBD
19395	424	3	surprised	surprised	JJ
19395	424	4	and	and	CC
19395	424	5	delighted	delighted	JJ
19395	424	6	to	to	TO
19395	424	7	find	find	VB
19395	424	8	that	that	IN
19395	424	9	the	the	DT
19395	424	10	fringes	fringe	NNS
19395	424	11	were	be	VBD
19395	424	12	perfectly	perfectly	RB
19395	424	13	sharp	sharp	JJ
19395	424	14	and	and	CC
19395	424	15	distinct	distinct	JJ
19395	424	16	with	with	IN
19395	424	17	the	the	DT
19395	424	18	full	full	JJ
19395	424	19	aperture	aperture	NN
19395	424	20	of	of	IN
19395	424	21	both	both	PDT
19395	424	22	these	these	DT
19395	424	23	instruments	instrument	NNS
19395	424	24	.	.	.
19395	425	1	Doctor	Doctor	NNP
19395	425	2	Anderson	Anderson	NNP
19395	425	3	,	,	,
19395	425	4	of	of	IN
19395	425	5	the	the	DT
19395	425	6	observatory	observatory	JJ
19395	425	7	staff	staff	NN
19395	425	8	,	,	,
19395	425	9	then	then	RB
19395	425	10	devised	devise	VBD
19395	425	11	a	a	DT
19395	425	12	special	special	JJ
19395	425	13	form	form	NN
19395	425	14	of	of	IN
19395	425	15	interferometer	interferometer	NNP
19395	425	16	for	for	IN
19395	425	17	the	the	DT
19395	425	18	measurement	measurement	NN
19395	425	19	of	of	IN
19395	425	20	close	close	JJ
19395	425	21	double	double	JJ
19395	425	22	stars	star	NNS
19395	425	23	,	,	,
19395	425	24	and	and	CC
19395	425	25	applied	apply	VBD
19395	425	26	it	-PRON-	PRP
19395	425	27	with	with	IN
19395	425	28	the	the	DT
19395	425	29	100-inch	100-inch	CD
19395	425	30	telescope	telescope	NN
19395	425	31	to	to	IN
19395	425	32	the	the	DT
19395	425	33	measurement	measurement	NN
19395	425	34	of	of	IN
19395	425	35	the	the	DT
19395	425	36	orbital	orbital	JJ
19395	425	37	motion	motion	NN
19395	425	38	of	of	IN
19395	425	39	the	the	DT
19395	425	40	close	close	JJ
19395	425	41	components	component	NNS
19395	425	42	of	of	IN
19395	425	43	Capella	Capella	NNP
19395	425	44	,	,	,
19395	425	45	with	with	IN
19395	425	46	results	result	NNS
19395	425	47	of	of	IN
19395	425	48	extraordinary	extraordinary	JJ
19395	425	49	accuracy	accuracy	NN
19395	425	50	,	,	,
19395	425	51	far	far	RB
19395	425	52	beyond	beyond	IN
19395	425	53	anything	anything	NN
19395	425	54	attainable	attainable	JJ
19395	425	55	by	by	IN
19395	425	56	previous	previous	JJ
19395	425	57	methods	method	NNS
19395	425	58	.	.	.
19395	426	1	The	the	DT
19395	426	2	success	success	NN
19395	426	3	of	of	IN
19395	426	4	this	this	DT
19395	426	5	work	work	NN
19395	426	6	strongly	strongly	RB
19395	426	7	encouraged	encourage	VBD
19395	426	8	the	the	DT
19395	426	9	more	more	RBR
19395	426	10	ambitious	ambitious	JJ
19395	426	11	project	project	NN
19395	426	12	of	of	IN
19395	426	13	measuring	measure	VBG
19395	426	14	the	the	DT
19395	426	15	diameter	diameter	NN
19395	426	16	of	of	IN
19395	426	17	a	a	DT
19395	426	18	star	star	NN
19395	426	19	,	,	,
19395	426	20	and	and	CC
19395	426	21	the	the	DT
19395	426	22	20-foot	20-foot	CD
19395	426	23	interferometer	interferometer	NN
19395	426	24	was	be	VBD
19395	426	25	built	build	VBN
19395	426	26	for	for	IN
19395	426	27	this	this	DT
19395	426	28	purpose	purpose	NN
19395	426	29	.	.	.
19395	427	1	The	the	DT
19395	427	2	difficult	difficult	JJ
19395	427	3	and	and	CC
19395	427	4	delicate	delicate	JJ
19395	427	5	problem	problem	NN
19395	427	6	of	of	IN
19395	427	7	adjusting	adjust	VBG
19395	427	8	the	the	DT
19395	427	9	mirrors	mirror	NNS
19395	427	10	of	of	IN
19395	427	11	this	this	DT
19395	427	12	instrument	instrument	NN
19395	427	13	with	with	IN
19395	427	14	the	the	DT
19395	427	15	necessary	necessary	JJ
19395	427	16	extreme	extreme	JJ
19395	427	17	accuracy	accuracy	NN
19395	427	18	was	be	VBD
19395	427	19	solved	solve	VBN
19395	427	20	by	by	IN
19395	427	21	Professor	Professor	NNP
19395	427	22	Michelson	Michelson	NNP
19395	427	23	during	during	IN
19395	427	24	his	-PRON-	PRP$
19395	427	25	visit	visit	NN
19395	427	26	to	to	IN
19395	427	27	Mount	Mount	NNP
19395	427	28	Wilson	Wilson	NNP
19395	427	29	in	in	IN
19395	427	30	the	the	DT
19395	427	31	summer	summer	NN
19395	427	32	of	of	IN
19395	427	33	1920	1920	CD
19395	427	34	,	,	,
19395	427	35	and	and	CC
19395	427	36	with	with	IN
19395	427	37	the	the	DT
19395	427	38	assistance	assistance	NN
19395	427	39	of	of	IN
19395	427	40	Mr.	Mr.	NNP
19395	427	41	Pease	Pease	NNP
19395	427	42	,	,	,
19395	427	43	of	of	IN
19395	427	44	the	the	DT
19395	427	45	observatory	observatory	JJ
19395	427	46	staff	staff	NN
19395	427	47	,	,	,
19395	427	48	interference	interference	NN
19395	427	49	fringes	fringe	NNS
19395	427	50	were	be	VBD
19395	427	51	observed	observe	VBN
19395	427	52	in	in	IN
19395	427	53	the	the	DT
19395	427	54	case	case	NN
19395	427	55	of	of	IN
19395	427	56	certain	certain	JJ
19395	427	57	stars	star	NNS
19395	427	58	when	when	WRB
19395	427	59	the	the	DT
19395	427	60	mirrors	mirror	NNS
19395	427	61	were	be	VBD
19395	427	62	as	as	RB
19395	427	63	much	much	JJ
19395	427	64	as	as	IN
19395	427	65	18	18	CD
19395	427	66	feet	foot	NNS
19395	427	67	apart	apart	RB
19395	427	68	.	.	.
19395	428	1	All	all	DT
19395	428	2	was	be	VBD
19395	428	3	thus	thus	RB
19395	428	4	in	in	IN
19395	428	5	readiness	readiness	NN
19395	428	6	for	for	IN
19395	428	7	a	a	DT
19395	428	8	decisive	decisive	JJ
19395	428	9	test	test	NN
19395	428	10	as	as	RB
19395	428	11	soon	soon	RB
19395	428	12	as	as	IN
19395	428	13	a	a	DT
19395	428	14	suitable	suitable	JJ
19395	428	15	star	star	NN
19395	428	16	presented	present	VBD
19395	428	17	itself	-PRON-	PRP
19395	428	18	.	.	.
19395	429	1	THE	the	DT
19395	429	2	GIANT	GIANT	NNP
19395	429	3	BETELGEUSE	BETELGEUSE	NNP
19395	429	4	Russell	Russell	NNP
19395	429	5	,	,	,
19395	429	6	Shapley	Shapley	NNP
19395	429	7	,	,	,
19395	429	8	and	and	CC
19395	429	9	Eddington	Eddington	NNP
19395	429	10	had	have	VBD
19395	429	11	pointed	point	VBN
19395	429	12	out	out	RP
19395	429	13	Betelgeuse	Betelgeuse	NNP
19395	429	14	(	(	-LRB-
19395	429	15	Arabic	arabic	JJ
19395	429	16	for	for	IN
19395	429	17	"	"	``
19395	429	18	the	the	DT
19395	429	19	giant	giant	NN
19395	429	20	's	's	POS
19395	429	21	shoulder	shoulder	NN
19395	429	22	"	"	''
19395	429	23	)	)	-RRB-
19395	429	24	,	,	,
19395	429	25	the	the	DT
19395	429	26	bright	bright	JJ
19395	429	27	red	red	JJ
19395	429	28	star	star	NN
19395	429	29	in	in	IN
19395	429	30	the	the	DT
19395	429	31	constellation	constellation	NN
19395	429	32	of	of	IN
19395	429	33	Orion	Orion	NNP
19395	429	34	(	(	-LRB-
19395	429	35	Fig	Fig	NNP
19395	429	36	.	.	.
19395	430	1	25	25	CD
19395	430	2	)	)	-RRB-
19395	430	3	,	,	,
19395	430	4	as	as	IN
19395	430	5	the	the	DT
19395	430	6	most	most	RBS
19395	430	7	favorable	favorable	JJ
19395	430	8	of	of	IN
19395	430	9	all	all	DT
19395	430	10	stars	star	NNS
19395	430	11	for	for	IN
19395	430	12	measurement	measurement	NN
19395	430	13	,	,	,
19395	430	14	and	and	CC
19395	430	15	the	the	DT
19395	430	16	last	last	RB
19395	430	17	-	-	HYPH
19395	430	18	named	name	VBN
19395	430	19	had	have	VBD
19395	430	20	given	give	VBN
19395	430	21	its	-PRON-	PRP$
19395	430	22	angular	angular	JJ
19395	430	23	diameter	diameter	NN
19395	430	24	as	as	IN
19395	430	25	0.051	0.051	CD
19395	430	26	of	of	IN
19395	430	27	a	a	DT
19395	430	28	second	second	NN
19395	430	29	of	of	IN
19395	430	30	arc	arc	NN
19395	430	31	.	.	.
19395	431	1	This	this	DT
19395	431	2	deduction	deduction	NN
19395	431	3	from	from	IN
19395	431	4	theory	theory	NN
19395	431	5	appeared	appear	VBD
19395	431	6	in	in	IN
19395	431	7	his	-PRON-	PRP$
19395	431	8	recent	recent	JJ
19395	431	9	presidential	presidential	JJ
19395	431	10	address	address	NN
19395	431	11	before	before	IN
19395	431	12	the	the	DT
19395	431	13	British	British	NNP
19395	431	14	Association	Association	NNP
19395	431	15	for	for	IN
19395	431	16	the	the	DT
19395	431	17	Advancement	Advancement	NNP
19395	431	18	of	of	IN
19395	431	19	Science	Science	NNP
19395	431	20	,	,	,
19395	431	21	in	in	IN
19395	431	22	which	which	WDT
19395	431	23	Professor	Professor	NNP
19395	431	24	Eddington	Eddington	NNP
19395	431	25	remarked	remark	VBD
19395	431	26	:	:	:
19395	431	27	"	"	``
19395	431	28	Probably	probably	RB
19395	431	29	the	the	DT
19395	431	30	greatest	great	JJS
19395	431	31	need	need	NN
19395	431	32	of	of	IN
19395	431	33	stellar	stellar	JJ
19395	431	34	astronomy	astronomy	NN
19395	431	35	at	at	IN
19395	431	36	the	the	DT
19395	431	37	present	present	JJ
19395	431	38	day	day	NN
19395	431	39	,	,	,
19395	431	40	in	in	IN
19395	431	41	order	order	NN
19395	431	42	to	to	TO
19395	431	43	make	make	VB
19395	431	44	sure	sure	JJ
19395	431	45	that	that	IN
19395	431	46	our	-PRON-	PRP$
19395	431	47	theoretical	theoretical	JJ
19395	431	48	deductions	deduction	NNS
19395	431	49	are	be	VBP
19395	431	50	starting	start	VBG
19395	431	51	on	on	IN
19395	431	52	the	the	DT
19395	431	53	right	right	JJ
19395	431	54	lines	line	NNS
19395	431	55	,	,	,
19395	431	56	is	be	VBZ
19395	431	57	some	some	DT
19395	431	58	means	mean	NNS
19395	431	59	of	of	IN
19395	431	60	measuring	measure	VBG
19395	431	61	the	the	DT
19395	431	62	apparent	apparent	JJ
19395	431	63	angular	angular	JJ
19395	431	64	diameter	diameter	NN
19395	431	65	of	of	IN
19395	431	66	stars	star	NNS
19395	431	67	.	.	.
19395	431	68	"	"	''
19395	432	1	He	-PRON-	PRP
19395	432	2	then	then	RB
19395	432	3	referred	refer	VBD
19395	432	4	to	to	IN
19395	432	5	the	the	DT
19395	432	6	work	work	NN
19395	432	7	already	already	RB
19395	432	8	in	in	IN
19395	432	9	progress	progress	NN
19395	432	10	on	on	IN
19395	432	11	Mount	Mount	NNP
19395	432	12	Wilson	Wilson	NNP
19395	432	13	,	,	,
19395	432	14	but	but	CC
19395	432	15	anticipated	anticipate	VBD
19395	432	16	"	"	''
19395	432	17	that	that	IN
19395	432	18	atmospheric	atmospheric	JJ
19395	432	19	disturbance	disturbance	NN
19395	432	20	will	will	MD
19395	432	21	ultimately	ultimately	RB
19395	432	22	set	set	VB
19395	432	23	the	the	DT
19395	432	24	limit	limit	NN
19395	432	25	to	to	IN
19395	432	26	what	what	WP
19395	432	27	can	can	MD
19395	432	28	be	be	VB
19395	432	29	accomplished	accomplish	VBN
19395	432	30	.	.	.
19395	432	31	"	"	''
19395	433	1	[	[	-LRB-
19395	433	2	Illustration	illustration	NN
19395	433	3	:	:	:
19395	433	4	Fig	Fig	NNP
19395	433	5	.	.	.
19395	434	1	25	25	CD
19395	434	2	.	.	.
19395	435	1	The	the	DT
19395	435	2	giant	giant	NN
19395	435	3	Betelgeuse	Betelgeuse	NNP
19395	435	4	(	(	-LRB-
19395	435	5	within	within	IN
19395	435	6	the	the	DT
19395	435	7	circle	circle	NN
19395	435	8	)	)	-RRB-
19395	435	9	,	,	,
19395	435	10	familiar	familiar	JJ
19395	435	11	as	as	IN
19395	435	12	the	the	DT
19395	435	13	conspicuous	conspicuous	JJ
19395	435	14	red	red	JJ
19395	435	15	star	star	NN
19395	435	16	in	in	IN
19395	435	17	the	the	DT
19395	435	18	right	right	JJ
19395	435	19	shoulder	shoulder	NN
19395	435	20	of	of	IN
19395	435	21	Orion	Orion	NNP
19395	435	22	(	(	-LRB-
19395	435	23	Hubble	Hubble	NNP
19395	435	24	)	)	-RRB-
19395	435	25	.	.	.
19395	436	1	Measures	measure	NNS
19395	436	2	with	with	IN
19395	436	3	the	the	DT
19395	436	4	interferometer	interferometer	NN
19395	436	5	show	show	VB
19395	436	6	its	-PRON-	PRP$
19395	436	7	angular	angular	JJ
19395	436	8	diameter	diameter	NN
19395	436	9	to	to	TO
19395	436	10	be	be	VB
19395	436	11	0.047	0.047	CD
19395	436	12	of	of	IN
19395	436	13	a	a	DT
19395	436	14	second	second	NN
19395	436	15	of	of	IN
19395	436	16	arc	arc	NN
19395	436	17	,	,	,
19395	436	18	corresponding	correspond	VBG
19395	436	19	to	to	IN
19395	436	20	a	a	DT
19395	436	21	linear	linear	JJ
19395	436	22	diameter	diameter	NN
19395	436	23	of	of	IN
19395	436	24	215,000,000	215,000,000	CD
19395	436	25	miles	mile	NNS
19395	436	26	,	,	,
19395	436	27	if	if	IN
19395	436	28	the	the	DT
19395	436	29	best	well	RBS
19395	436	30	available	available	JJ
19395	436	31	determination	determination	NN
19395	436	32	of	of	IN
19395	436	33	its	-PRON-	PRP$
19395	436	34	distance	distance	NN
19395	436	35	can	can	MD
19395	436	36	be	be	VB
19395	436	37	relied	rely	VBN
19395	436	38	upon	upon	IN
19395	436	39	.	.	.
19395	437	1	This	this	DT
19395	437	2	determination	determination	NN
19395	437	3	shows	show	VBZ
19395	437	4	Betelgeuse	betelgeuse	IN
19395	437	5	to	to	TO
19395	437	6	be	be	VB
19395	437	7	160	160	CD
19395	437	8	light	light	NN
19395	437	9	-	-	HYPH
19395	437	10	years	year	NNS
19395	437	11	from	from	IN
19395	437	12	the	the	DT
19395	437	13	earth	earth	NN
19395	437	14	.	.	.
19395	438	1	Light	light	JJ
19395	438	2	travels	travel	NNS
19395	438	3	at	at	IN
19395	438	4	the	the	DT
19395	438	5	rate	rate	NN
19395	438	6	of	of	IN
19395	438	7	186,000	186,000	CD
19395	438	8	miles	mile	NNS
19395	438	9	per	per	IN
19395	438	10	second	second	NN
19395	438	11	,	,	,
19395	438	12	and	and	CC
19395	438	13	yet	yet	RB
19395	438	14	spends	spend	VBZ
19395	438	15	160	160	CD
19395	438	16	years	year	NNS
19395	438	17	on	on	IN
19395	438	18	its	-PRON-	PRP$
19395	438	19	journey	journey	NN
19395	438	20	to	to	IN
19395	438	21	us	-PRON-	PRP
19395	438	22	from	from	IN
19395	438	23	this	this	DT
19395	438	24	star	star	NN
19395	438	25	.	.	.
19395	438	26	]	]	-RRB-
19395	439	1	On	on	IN
19395	439	2	December	December	NNP
19395	439	3	13	13	CD
19395	439	4	,	,	,
19395	439	5	1920	1920	CD
19395	439	6	,	,	,
19395	439	7	Mr.	Mr.	NNP
19395	439	8	Pease	Pease	NNP
19395	439	9	successfully	successfully	RB
19395	439	10	measured	measure	VBD
19395	439	11	the	the	DT
19395	439	12	diameter	diameter	NN
19395	439	13	of	of	IN
19395	439	14	Betelgeuse	Betelgeuse	NNP
19395	439	15	with	with	IN
19395	439	16	the	the	DT
19395	439	17	20-foot	20-foot	CD
19395	439	18	interferometer	interferometer	NN
19395	439	19	.	.	.
19395	440	1	As	as	IN
19395	440	2	the	the	DT
19395	440	3	outer	outer	JJ
19395	440	4	mirrors	mirror	NNS
19395	440	5	were	be	VBD
19395	440	6	separated	separate	VBN
19395	440	7	the	the	DT
19395	440	8	interference	interference	NN
19395	440	9	fringes	fringe	NNS
19395	440	10	gradually	gradually	RB
19395	440	11	became	become	VBD
19395	440	12	less	less	RBR
19395	440	13	distinct	distinct	JJ
19395	440	14	,	,	,
19395	440	15	as	as	IN
19395	440	16	theory	theory	NN
19395	440	17	requires	require	VBZ
19395	440	18	,	,	,
19395	440	19	and	and	CC
19395	440	20	as	as	IN
19395	440	21	Doctor	Doctor	NNP
19395	440	22	Merrill	Merrill	NNP
19395	440	23	had	have	VBD
19395	440	24	previously	previously	RB
19395	440	25	seen	see	VBN
19395	440	26	when	when	WRB
19395	440	27	observing	observe	VBG
19395	440	28	Betelgeuse	Betelgeuse	NNP
19395	440	29	with	with	IN
19395	440	30	the	the	DT
19395	440	31	interferometer	interferometer	NN
19395	440	32	used	use	VBN
19395	440	33	for	for	IN
19395	440	34	Capella	Capella	NNP
19395	440	35	.	.	.
19395	441	1	At	at	IN
19395	441	2	a	a	DT
19395	441	3	separation	separation	NN
19395	441	4	of	of	IN
19395	441	5	10	10	CD
19395	441	6	feet	foot	NNS
19395	441	7	the	the	DT
19395	441	8	fringes	fringe	NNS
19395	441	9	disappeared	disappear	VBD
19395	441	10	completely	completely	RB
19395	441	11	,	,	,
19395	441	12	giving	give	VBG
19395	441	13	the	the	DT
19395	441	14	data	datum	NNS
19395	441	15	required	require	VBN
19395	441	16	for	for	IN
19395	441	17	calculating	calculate	VBG
19395	441	18	the	the	DT
19395	441	19	diameter	diameter	NN
19395	441	20	of	of	IN
19395	441	21	the	the	DT
19395	441	22	star	star	NN
19395	441	23	.	.	.
19395	442	1	To	to	TO
19395	442	2	test	test	VB
19395	442	3	the	the	DT
19395	442	4	perfection	perfection	NN
19395	442	5	of	of	IN
19395	442	6	the	the	DT
19395	442	7	adjustment	adjustment	NN
19395	442	8	,	,	,
19395	442	9	the	the	DT
19395	442	10	telescope	telescope	NN
19395	442	11	was	be	VBD
19395	442	12	turned	turn	VBN
19395	442	13	to	to	IN
19395	442	14	other	other	JJ
19395	442	15	stars	star	NNS
19395	442	16	,	,	,
19395	442	17	of	of	IN
19395	442	18	smaller	small	JJR
19395	442	19	angular	angular	JJ
19395	442	20	diameter	diameter	NN
19395	442	21	,	,	,
19395	442	22	which	which	WDT
19395	442	23	showed	show	VBD
19395	442	24	the	the	DT
19395	442	25	fringes	fringe	NNS
19395	442	26	with	with	IN
19395	442	27	perfect	perfect	JJ
19395	442	28	clearness	clearness	NN
19395	442	29	.	.	.
19395	443	1	Turning	turn	VBG
19395	443	2	back	back	RB
19395	443	3	to	to	IN
19395	443	4	Betelgeuse	Betelgeuse	NNP
19395	443	5	,	,	,
19395	443	6	they	-PRON-	PRP
19395	443	7	were	be	VBD
19395	443	8	seen	see	VBN
19395	443	9	beyond	beyond	IN
19395	443	10	doubt	doubt	NN
19395	443	11	to	to	TO
19395	443	12	be	be	VB
19395	443	13	absent	absent	JJ
19395	443	14	.	.	.
19395	444	1	Assuming	assume	VBG
19395	444	2	the	the	DT
19395	444	3	mean	mean	JJ
19395	444	4	wave	wave	NN
19395	444	5	-	-	HYPH
19395	444	6	length	length	NN
19395	444	7	of	of	IN
19395	444	8	the	the	DT
19395	444	9	light	light	NN
19395	444	10	of	of	IN
19395	444	11	this	this	DT
19395	444	12	star	star	NN
19395	444	13	to	to	TO
19395	444	14	be	be	VB
19395	444	15	5750/10000000	5750/10000000	CD
19395	444	16	of	of	IN
19395	444	17	a	a	DT
19395	444	18	millimetre	millimetre	NN
19395	444	19	,	,	,
19395	444	20	its	-PRON-	PRP$
19395	444	21	angular	angular	JJ
19395	444	22	diameter	diameter	NN
19395	444	23	comes	come	VBZ
19395	444	24	out	out	RP
19395	444	25	0.047	0.047	CD
19395	444	26	of	of	IN
19395	444	27	a	a	DT
19395	444	28	second	second	NN
19395	444	29	of	of	IN
19395	444	30	arc	arc	NN
19395	444	31	,	,	,
19395	444	32	thus	thus	RB
19395	444	33	falling	fall	VBG
19395	444	34	between	between	IN
19395	444	35	the	the	DT
19395	444	36	values--0.051	values--0.051	NNP
19395	444	37	and	and	CC
19395	444	38	0.031	0.031	CD
19395	444	39	of	of	IN
19395	444	40	a	a	DT
19395	444	41	second	second	JJ
19395	444	42	--	--	:
19395	444	43	predicted	predict	VBN
19395	444	44	by	by	IN
19395	444	45	Eddington	Eddington	NNP
19395	444	46	and	and	CC
19395	444	47	Russell	Russell	NNP
19395	444	48	from	from	IN
19395	444	49	slightly	slightly	RB
19395	444	50	different	different	JJ
19395	444	51	assumptions	assumption	NNS
19395	444	52	.	.	.
19395	445	1	Subsequent	subsequent	JJ
19395	445	2	corrections	correction	NNS
19395	445	3	and	and	CC
19395	445	4	repeated	repeat	VBN
19395	445	5	measurement	measurement	NN
19395	445	6	will	will	MD
19395	445	7	change	change	VB
19395	445	8	Mr.	Mr.	NNP
19395	445	9	Pease	Pease	NNP
19395	445	10	's	's	POS
19395	445	11	result	result	NN
19395	445	12	somewhat	somewhat	RB
19395	445	13	,	,	,
19395	445	14	but	but	CC
19395	445	15	it	-PRON-	PRP
19395	445	16	is	be	VBZ
19395	445	17	almost	almost	RB
19395	445	18	certainly	certainly	RB
19395	445	19	within	within	IN
19395	445	20	10	10	CD
19395	445	21	or	or	CC
19395	445	22	15	15	CD
19395	445	23	per	per	NN
19395	445	24	cent	cent	NN
19395	445	25	of	of	IN
19395	445	26	the	the	DT
19395	445	27	truth	truth	NN
19395	445	28	.	.	.
19395	446	1	We	-PRON-	PRP
19395	446	2	may	may	MD
19395	446	3	therefore	therefore	RB
19395	446	4	conclude	conclude	VB
19395	446	5	that	that	IN
19395	446	6	the	the	DT
19395	446	7	angular	angular	JJ
19395	446	8	diameter	diameter	NN
19395	446	9	of	of	IN
19395	446	10	Betelgeuse	Betelgeuse	NNP
19395	446	11	is	be	VBZ
19395	446	12	very	very	RB
19395	446	13	nearly	nearly	RB
19395	446	14	the	the	DT
19395	446	15	same	same	JJ
19395	446	16	as	as	IN
19395	446	17	that	that	DT
19395	446	18	of	of	IN
19395	446	19	a	a	DT
19395	446	20	ball	ball	NN
19395	446	21	one	one	CD
19395	446	22	inch	inch	NN
19395	446	23	in	in	IN
19395	446	24	diameter	diameter	NN
19395	446	25	,	,	,
19395	446	26	seen	see	VBN
19395	446	27	at	at	IN
19395	446	28	a	a	DT
19395	446	29	distance	distance	NN
19395	446	30	of	of	IN
19395	446	31	seventy	seventy	CD
19395	446	32	miles	mile	NNS
19395	446	33	.	.	.
19395	447	1	[	[	-LRB-
19395	447	2	Illustration	illustration	NN
19395	447	3	:	:	:
19395	447	4	Fig	Fig	NNP
19395	447	5	.	.	.
19395	448	1	26	26	CD
19395	448	2	.	.	.
19395	449	1	Arcturus	Arcturus	NNP
19395	449	2	(	(	-LRB-
19395	449	3	within	within	IN
19395	449	4	the	the	DT
19395	449	5	white	white	NNP
19395	449	6	circle	circle	NNP
19395	449	7	)	)	-RRB-
19395	449	8	,	,	,
19395	449	9	known	know	VBN
19395	449	10	to	to	IN
19395	449	11	the	the	DT
19395	449	12	Arabs	Arabs	NNPS
19395	449	13	as	as	IN
19395	449	14	the	the	DT
19395	449	15	"	"	``
19395	449	16	Lance	Lance	NNP
19395	449	17	Bearer	Bearer	NNP
19395	449	18	,	,	,
19395	449	19	"	"	''
19395	449	20	and	and	CC
19395	449	21	to	to	IN
19395	449	22	the	the	DT
19395	449	23	Chinese	Chinese	NNPS
19395	449	24	as	as	IN
19395	449	25	the	the	DT
19395	449	26	"	"	``
19395	449	27	Great	Great	NNP
19395	449	28	Horn	Horn	NNP
19395	449	29	"	"	''
19395	449	30	or	or	CC
19395	449	31	the	the	DT
19395	449	32	"	"	``
19395	449	33	Palace	Palace	NNP
19395	449	34	of	of	IN
19395	449	35	the	the	DT
19395	449	36	Emperors	Emperors	NNPS
19395	449	37	"	"	''
19395	449	38	(	(	-LRB-
19395	449	39	Hubble	Hubble	NNP
19395	449	40	)	)	-RRB-
19395	449	41	.	.	.
19395	450	1	Its	-PRON-	PRP$
19395	450	2	angular	angular	JJ
19395	450	3	diameter	diameter	NN
19395	450	4	,	,	,
19395	450	5	measured	measure	VBN
19395	450	6	at	at	IN
19395	450	7	Mount	Mount	NNP
19395	450	8	Wilson	Wilson	NNP
19395	450	9	by	by	IN
19395	450	10	Pease	Pease	NNP
19395	450	11	with	with	IN
19395	450	12	the	the	DT
19395	450	13	20-foot	20-foot	CD
19395	450	14	Michelson	Michelson	NNP
19395	450	15	interferometer	interferometer	NN
19395	450	16	on	on	IN
19395	450	17	April	April	NNP
19395	450	18	15	15	CD
19395	450	19	,	,	,
19395	450	20	1921	1921	CD
19395	450	21	,	,	,
19395	450	22	is	be	VBZ
19395	450	23	0.022	0.022	CD
19395	450	24	of	of	IN
19395	450	25	a	a	DT
19395	450	26	second	second	JJ
19395	450	27	,	,	,
19395	450	28	in	in	IN
19395	450	29	close	close	JJ
19395	450	30	agreement	agreement	NN
19395	450	31	with	with	IN
19395	450	32	Russell	Russell	NNP
19395	450	33	's	's	POS
19395	450	34	predicted	predict	VBN
19395	450	35	value	value	NN
19395	450	36	of	of	IN
19395	450	37	0.019	0.019	CD
19395	450	38	of	of	IN
19395	450	39	a	a	DT
19395	450	40	second	second	NN
19395	450	41	.	.	.
19395	451	1	The	the	DT
19395	451	2	mean	mean	JJ
19395	451	3	parallax	parallax	NN
19395	451	4	of	of	IN
19395	451	5	Arcturus	Arcturus	NNP
19395	451	6	,	,	,
19395	451	7	based	base	VBN
19395	451	8	upon	upon	IN
19395	451	9	several	several	JJ
19395	451	10	determinations	determination	NNS
19395	451	11	,	,	,
19395	451	12	is	be	VBZ
19395	451	13	0.095	0.095	CD
19395	451	14	of	of	IN
19395	451	15	a	a	DT
19395	451	16	second	second	JJ
19395	451	17	,	,	,
19395	451	18	corresponding	correspond	VBG
19395	451	19	to	to	IN
19395	451	20	a	a	DT
19395	451	21	distance	distance	NN
19395	451	22	of	of	IN
19395	451	23	34	34	CD
19395	451	24	light	light	NN
19395	451	25	-	-	HYPH
19395	451	26	years	year	NNS
19395	451	27	.	.	.
19395	452	1	The	the	DT
19395	452	2	linear	linear	JJ
19395	452	3	diameter	diameter	NN
19395	452	4	,	,	,
19395	452	5	computed	compute	VBD
19395	452	6	from	from	IN
19395	452	7	Pease	Pease	NNP
19395	452	8	's	's	POS
19395	452	9	measure	measure	NN
19395	452	10	and	and	CC
19395	452	11	this	this	DT
19395	452	12	value	value	NN
19395	452	13	of	of	IN
19395	452	14	the	the	DT
19395	452	15	distance	distance	NN
19395	452	16	is	be	VBZ
19395	452	17	about	about	IN
19395	452	18	21	21	CD
19395	452	19	million	million	CD
19395	452	20	miles	mile	NNS
19395	452	21	.	.	.
19395	452	22	]	]	-RRB-
19395	453	1	But	but	CC
19395	453	2	this	this	DT
19395	453	3	represents	represent	VBZ
19395	453	4	only	only	RB
19395	453	5	the	the	DT
19395	453	6	angle	angle	NN
19395	453	7	subtended	subtend	VBN
19395	453	8	by	by	IN
19395	453	9	the	the	DT
19395	453	10	star	star	NN
19395	453	11	's	's	POS
19395	453	12	disk	disk	NN
19395	453	13	.	.	.
19395	454	1	To	to	TO
19395	454	2	learn	learn	VB
19395	454	3	its	-PRON-	PRP$
19395	454	4	linear	linear	JJ
19395	454	5	diameter	diameter	NN
19395	454	6	,	,	,
19395	454	7	we	-PRON-	PRP
19395	454	8	must	must	MD
19395	454	9	know	know	VB
19395	454	10	its	-PRON-	PRP$
19395	454	11	distance	distance	NN
19395	454	12	.	.	.
19395	455	1	Four	four	CD
19395	455	2	determinations	determination	NNS
19395	455	3	of	of	IN
19395	455	4	the	the	DT
19395	455	5	parallax	parallax	NN
19395	455	6	,	,	,
19395	455	7	which	which	WDT
19395	455	8	determines	determine	VBZ
19395	455	9	the	the	DT
19395	455	10	distance	distance	NN
19395	455	11	,	,	,
19395	455	12	have	have	VBP
19395	455	13	been	be	VBN
19395	455	14	made	make	VBN
19395	455	15	.	.	.
19395	456	1	Elkin	Elkin	NNP
19395	456	2	,	,	,
19395	456	3	with	with	IN
19395	456	4	the	the	DT
19395	456	5	Yale	Yale	NNP
19395	456	6	heliometer	heliometer	NN
19395	456	7	,	,	,
19395	456	8	obtained	obtain	VBD
19395	456	9	0.032	0.032	CD
19395	456	10	of	of	IN
19395	456	11	a	a	DT
19395	456	12	second	second	NN
19395	456	13	of	of	IN
19395	456	14	arc	arc	NN
19395	456	15	.	.	.
19395	457	1	Schlesinger	Schlesinger	NNP
19395	457	2	,	,	,
19395	457	3	from	from	IN
19395	457	4	photographs	photograph	NNS
19395	457	5	taken	take	VBN
19395	457	6	with	with	IN
19395	457	7	the	the	DT
19395	457	8	30-inch	30-inch	CD
19395	457	9	Allegheny	Allegheny	NNP
19395	457	10	refractor	refractor	NN
19395	457	11	,	,	,
19395	457	12	derived	derive	VBD
19395	457	13	0.016	0.016	CD
19395	457	14	.	.	.
19395	458	1	Adams	Adams	NNP
19395	458	2	,	,	,
19395	458	3	by	by	IN
19395	458	4	his	-PRON-	PRP$
19395	458	5	spectroscopic	spectroscopic	JJ
19395	458	6	method	method	NN
19395	458	7	applied	apply	VBD
19395	458	8	with	with	IN
19395	458	9	the	the	DT
19395	458	10	60-inch	60-inch	CD
19395	458	11	Mount	Mount	NNP
19395	458	12	Wilson	Wilson	NNP
19395	458	13	reflector	reflector	NN
19395	458	14	,	,	,
19395	458	15	obtained	obtain	VBD
19395	458	16	0.012	0.012	CD
19395	458	17	.	.	.
19395	459	1	Lee	Lee	NNP
19395	459	2	's	's	POS
19395	459	3	recent	recent	JJ
19395	459	4	value	value	NN
19395	459	5	,	,	,
19395	459	6	secured	secure	VBN
19395	459	7	photographically	photographically	RB
19395	459	8	with	with	IN
19395	459	9	the	the	DT
19395	459	10	40-inch	40-inch	CD
19395	459	11	Yerkes	Yerkes	NNP
19395	459	12	refractor	refractor	NN
19395	459	13	,	,	,
19395	459	14	is	be	VBZ
19395	459	15	0.022	0.022	CD
19395	459	16	.	.	.
19395	460	1	The	the	DT
19395	460	2	heliometer	heliometer	NN
19395	460	3	parallax	parallax	NN
19395	460	4	is	be	VBZ
19395	460	5	doubtless	doubtless	RB
19395	460	6	less	less	RBR
19395	460	7	reliable	reliable	JJ
19395	460	8	than	than	IN
19395	460	9	the	the	DT
19395	460	10	photographic	photographic	JJ
19395	460	11	ones	one	NNS
19395	460	12	,	,	,
19395	460	13	and	and	CC
19395	460	14	Doctor	Doctor	NNP
19395	460	15	Adams	Adams	NNP
19395	460	16	states	state	VBZ
19395	460	17	that	that	IN
19395	460	18	the	the	DT
19395	460	19	spectral	spectral	JJ
19395	460	20	type	type	NN
19395	460	21	and	and	CC
19395	460	22	luminosity	luminosity	NN
19395	460	23	of	of	IN
19395	460	24	Betelgeuse	Betelgeuse	NNP
19395	460	25	make	make	VB
19395	460	26	his	-PRON-	PRP$
19395	460	27	value	value	NN
19395	460	28	less	less	RBR
19395	460	29	certain	certain	JJ
19395	460	30	than	than	IN
19395	460	31	in	in	IN
19395	460	32	the	the	DT
19395	460	33	case	case	NN
19395	460	34	of	of	IN
19395	460	35	most	most	JJS
19395	460	36	other	other	JJ
19395	460	37	stars	star	NNS
19395	460	38	.	.	.
19395	461	1	If	if	IN
19395	461	2	we	-PRON-	PRP
19395	461	3	take	take	VBP
19395	461	4	a	a	DT
19395	461	5	(	(	-LRB-
19395	461	6	weighted	weighted	JJ
19395	461	7	)	)	-RRB-
19395	461	8	mean	mean	VBP
19395	461	9	value	value	NN
19395	461	10	of	of	IN
19395	461	11	0.020	0.020	CD
19395	461	12	of	of	IN
19395	461	13	a	a	DT
19395	461	14	second	second	JJ
19395	461	15	,	,	,
19395	461	16	we	-PRON-	PRP
19395	461	17	shall	shall	MD
19395	461	18	probably	probably	RB
19395	461	19	not	not	RB
19395	461	20	be	be	VB
19395	461	21	far	far	RB
19395	461	22	from	from	IN
19395	461	23	the	the	DT
19395	461	24	truth	truth	NN
19395	461	25	.	.	.
19395	462	1	This	this	DT
19395	462	2	parallax	parallax	NN
19395	462	3	represents	represent	VBZ
19395	462	4	the	the	DT
19395	462	5	angle	angle	NN
19395	462	6	subtended	subtend	VBN
19395	462	7	by	by	IN
19395	462	8	the	the	DT
19395	462	9	radius	radius	NN
19395	462	10	of	of	IN
19395	462	11	the	the	DT
19395	462	12	earth	earth	NN
19395	462	13	's	's	POS
19395	462	14	orbit	orbit	NN
19395	462	15	(	(	-LRB-
19395	462	16	93,000,000	93,000,000	CD
19395	462	17	miles	mile	NNS
19395	462	18	)	)	-RRB-
19395	462	19	at	at	IN
19395	462	20	the	the	DT
19395	462	21	distance	distance	NN
19395	462	22	of	of	IN
19395	462	23	Betelgeuse	Betelgeuse	NNP
19395	462	24	.	.	.
19395	463	1	By	by	IN
19395	463	2	comparing	compare	VBG
19395	463	3	it	-PRON-	PRP
19395	463	4	with	with	IN
19395	463	5	0.047	0.047	CD
19395	463	6	,	,	,
19395	463	7	the	the	DT
19395	463	8	angular	angular	JJ
19395	463	9	diameter	diameter	NN
19395	463	10	of	of	IN
19395	463	11	the	the	DT
19395	463	12	star	star	NN
19395	463	13	,	,	,
19395	463	14	we	-PRON-	PRP
19395	463	15	see	see	VBP
19395	463	16	that	that	IN
19395	463	17	the	the	DT
19395	463	18	linear	linear	JJ
19395	463	19	diameter	diameter	NN
19395	463	20	is	be	VBZ
19395	463	21	about	about	RB
19395	463	22	two	two	CD
19395	463	23	and	and	CC
19395	463	24	one	one	CD
19395	463	25	-	-	HYPH
19395	463	26	third	third	NN
19395	463	27	times	time	NNS
19395	463	28	as	as	RB
19395	463	29	great	great	JJ
19395	463	30	as	as	IN
19395	463	31	the	the	DT
19395	463	32	distance	distance	NN
19395	463	33	from	from	IN
19395	463	34	the	the	DT
19395	463	35	earth	earth	NN
19395	463	36	to	to	IN
19395	463	37	the	the	DT
19395	463	38	sun	sun	NN
19395	463	39	,	,	,
19395	463	40	or	or	CC
19395	463	41	approximately	approximately	RB
19395	463	42	215,000,000	215,000,000	CD
19395	463	43	miles	mile	NNS
19395	463	44	.	.	.
19395	464	1	Thus	thus	RB
19395	464	2	,	,	,
19395	464	3	if	if	IN
19395	464	4	this	this	DT
19395	464	5	measure	measure	NN
19395	464	6	of	of	IN
19395	464	7	its	-PRON-	PRP$
19395	464	8	distance	distance	NN
19395	464	9	is	be	VBZ
19395	464	10	not	not	RB
19395	464	11	considerably	considerably	RB
19395	464	12	in	in	IN
19395	464	13	error	error	NN
19395	464	14	,	,	,
19395	464	15	Betelgeuse	Betelgeuse	NNP
19395	464	16	would	would	MD
19395	464	17	nearly	nearly	RB
19395	464	18	fill	fill	VB
19395	464	19	the	the	DT
19395	464	20	orbit	orbit	NN
19395	464	21	of	of	IN
19395	464	22	Mars	Mars	NNP
19395	464	23	.	.	.
19395	465	1	All	all	DT
19395	465	2	methods	method	NNS
19395	465	3	of	of	IN
19395	465	4	determining	determine	VBG
19395	465	5	the	the	DT
19395	465	6	distances	distance	NNS
19395	465	7	of	of	IN
19395	465	8	the	the	DT
19395	465	9	stars	star	NNS
19395	465	10	are	be	VBP
19395	465	11	subject	subject	JJ
19395	465	12	to	to	IN
19395	465	13	uncertainty	uncertainty	NN
19395	465	14	,	,	,
19395	465	15	however	however	RB
19395	465	16	,	,	,
19395	465	17	and	and	CC
19395	465	18	subsequent	subsequent	JJ
19395	465	19	measures	measure	NNS
19395	465	20	may	may	MD
19395	465	21	reduce	reduce	VB
19395	465	22	this	this	DT
19395	465	23	figure	figure	NN
19395	465	24	very	very	RB
19395	465	25	appreciably	appreciably	RB
19395	465	26	.	.	.
19395	466	1	But	but	CC
19395	466	2	there	there	EX
19395	466	3	can	can	MD
19395	466	4	be	be	VB
19395	466	5	no	no	DT
19395	466	6	doubt	doubt	NN
19395	466	7	that	that	IN
19395	466	8	the	the	DT
19395	466	9	diameter	diameter	NN
19395	466	10	of	of	IN
19395	466	11	Betelgeuse	Betelgeuse	NNP
19395	466	12	exceeds	exceed	VBZ
19395	466	13	100,000,000	100,000,000	CD
19395	466	14	miles	mile	NNS
19395	466	15	,	,	,
19395	466	16	and	and	CC
19395	466	17	it	-PRON-	PRP
19395	466	18	is	be	VBZ
19395	466	19	probably	probably	RB
19395	466	20	much	much	RB
19395	466	21	greater	great	JJR
19395	466	22	.	.	.
19395	467	1	The	the	DT
19395	467	2	extremely	extremely	RB
19395	467	3	small	small	JJ
19395	467	4	angle	angle	NN
19395	467	5	subtended	subtend	VBN
19395	467	6	by	by	IN
19395	467	7	this	this	DT
19395	467	8	enormous	enormous	JJ
19395	467	9	disk	disk	NN
19395	467	10	is	be	VBZ
19395	467	11	explained	explain	VBN
19395	467	12	by	by	IN
19395	467	13	the	the	DT
19395	467	14	great	great	JJ
19395	467	15	distance	distance	NN
19395	467	16	of	of	IN
19395	467	17	the	the	DT
19395	467	18	star	star	NN
19395	467	19	,	,	,
19395	467	20	which	which	WDT
19395	467	21	is	be	VBZ
19395	467	22	about	about	RB
19395	467	23	160	160	CD
19395	467	24	light	light	NN
19395	467	25	-	-	HYPH
19395	467	26	years	year	NNS
19395	467	27	.	.	.
19395	468	1	That	that	DT
19395	468	2	is	be	VBZ
19395	468	3	to	to	TO
19395	468	4	say	say	VB
19395	468	5	,	,	,
19395	468	6	light	light	JJ
19395	468	7	travelling	travel	VBG
19395	468	8	at	at	IN
19395	468	9	the	the	DT
19395	468	10	rate	rate	NN
19395	468	11	of	of	IN
19395	468	12	186,000	186,000	CD
19395	468	13	miles	mile	NNS
19395	468	14	per	per	IN
19395	468	15	second	second	JJ
19395	468	16	spends	spend	VBZ
19395	468	17	160	160	CD
19395	468	18	years	year	NNS
19395	468	19	in	in	IN
19395	468	20	crossing	cross	VBG
19395	468	21	the	the	DT
19395	468	22	space	space	NN
19395	468	23	that	that	WDT
19395	468	24	lies	lie	VBZ
19395	468	25	between	between	IN
19395	468	26	us	-PRON-	PRP
19395	468	27	and	and	CC
19395	468	28	Betelgeuse	Betelgeuse	NNP
19395	468	29	,	,	,
19395	468	30	whose	whose	WP$
19395	468	31	tremendous	tremendous	JJ
19395	468	32	proportions	proportion	NNS
19395	468	33	therefore	therefore	RB
19395	468	34	seem	seem	VBP
19395	468	35	so	so	RB
19395	468	36	minute	minute	JJ
19395	468	37	even	even	RB
19395	468	38	in	in	IN
19395	468	39	the	the	DT
19395	468	40	most	most	RBS
19395	468	41	powerful	powerful	JJ
19395	468	42	telescopes	telescope	NNS
19395	468	43	.	.	.
19395	469	1	STELLAR	STELLAR	NNS
19395	469	2	EVOLUTION	EVOLUTION	VBN
19395	469	3	This	this	DT
19395	469	4	actual	actual	JJ
19395	469	5	measure	measure	NN
19395	469	6	of	of	IN
19395	469	7	the	the	DT
19395	469	8	diameter	diameter	NN
19395	469	9	of	of	IN
19395	469	10	Betelgeuse	Betelgeuse	NNP
19395	469	11	supplies	supply	VBZ
19395	469	12	a	a	DT
19395	469	13	new	new	JJ
19395	469	14	and	and	CC
19395	469	15	striking	striking	JJ
19395	469	16	test	test	NN
19395	469	17	of	of	IN
19395	469	18	Russell	Russell	NNP
19395	469	19	's	's	POS
19395	469	20	and	and	CC
19395	469	21	Hertzsprung	Hertzsprung	NNP
19395	469	22	's	's	POS
19395	469	23	theory	theory	NN
19395	469	24	of	of	IN
19395	469	25	dwarf	dwarf	NN
19395	469	26	and	and	CC
19395	469	27	giant	giant	JJ
19395	469	28	stars	star	NNS
19395	469	29	.	.	.
19395	470	1	Just	just	RB
19395	470	2	before	before	IN
19395	470	3	the	the	DT
19395	470	4	war	war	NN
19395	470	5	Russell	Russell	NNP
19395	470	6	showed	show	VBD
19395	470	7	that	that	IN
19395	470	8	our	-PRON-	PRP$
19395	470	9	old	old	JJ
19395	470	10	methods	method	NNS
19395	470	11	of	of	IN
19395	470	12	classifying	classify	VBG
19395	470	13	the	the	DT
19395	470	14	stars	star	NNS
19395	470	15	according	accord	VBG
19395	470	16	to	to	IN
19395	470	17	their	-PRON-	PRP$
19395	470	18	spectra	spectra	NN
19395	470	19	must	must	MD
19395	470	20	be	be	VB
19395	470	21	radically	radically	RB
19395	470	22	changed	change	VBN
19395	470	23	.	.	.
19395	471	1	Stars	star	NNS
19395	471	2	in	in	IN
19395	471	3	an	an	DT
19395	471	4	early	early	JJ
19395	471	5	stage	stage	NN
19395	471	6	of	of	IN
19395	471	7	their	-PRON-	PRP$
19395	471	8	life	life	NN
19395	471	9	history	history	NN
19395	471	10	may	may	MD
19395	471	11	be	be	VB
19395	471	12	regarded	regard	VBN
19395	471	13	as	as	IN
19395	471	14	diffuse	diffuse	NN
19395	471	15	gaseous	gaseous	JJ
19395	471	16	masses	masse	NNS
19395	471	17	,	,	,
19395	471	18	enormously	enormously	RB
19395	471	19	larger	large	JJR
19395	471	20	than	than	IN
19395	471	21	our	-PRON-	PRP$
19395	471	22	sun	sun	NN
19395	471	23	,	,	,
19395	471	24	and	and	CC
19395	471	25	at	at	IN
19395	471	26	a	a	DT
19395	471	27	much	much	RB
19395	471	28	lower	low	JJR
19395	471	29	temperature	temperature	NN
19395	471	30	.	.	.
19395	472	1	Their	-PRON-	PRP$
19395	472	2	density	density	NN
19395	472	3	must	must	MD
19395	472	4	be	be	VB
19395	472	5	very	very	RB
19395	472	6	low	low	JJ
19395	472	7	,	,	,
19395	472	8	and	and	CC
19395	472	9	their	-PRON-	PRP$
19395	472	10	state	state	NN
19395	472	11	that	that	DT
19395	472	12	of	of	IN
19395	472	13	a	a	DT
19395	472	14	perfect	perfect	JJ
19395	472	15	gas	gas	NN
19395	472	16	.	.	.
19395	473	1	These	these	DT
19395	473	2	are	be	VBP
19395	473	3	the	the	DT
19395	473	4	"	"	``
19395	473	5	giants	giant	NNS
19395	473	6	.	.	.
19395	473	7	"	"	''
19395	474	1	In	in	IN
19395	474	2	the	the	DT
19395	474	3	slow	slow	JJ
19395	474	4	process	process	NN
19395	474	5	of	of	IN
19395	474	6	time	time	NN
19395	474	7	they	-PRON-	PRP
19395	474	8	contract	contract	VBP
19395	474	9	through	through	IN
19395	474	10	constant	constant	JJ
19395	474	11	loss	loss	NN
19395	474	12	of	of	IN
19395	474	13	heat	heat	NN
19395	474	14	by	by	IN
19395	474	15	radiation	radiation	NN
19395	474	16	.	.	.
19395	475	1	But	but	CC
19395	475	2	,	,	,
19395	475	3	despite	despite	IN
19395	475	4	this	this	DT
19395	475	5	loss	loss	NN
19395	475	6	,	,	,
19395	475	7	the	the	DT
19395	475	8	heat	heat	NN
19395	475	9	produced	produce	VBN
19395	475	10	by	by	IN
19395	475	11	contraction	contraction	NN
19395	475	12	and	and	CC
19395	475	13	from	from	IN
19395	475	14	other	other	JJ
19395	475	15	sources	source	NNS
19395	475	16	(	(	-LRB-
19395	475	17	see	see	VB
19395	475	18	p.	p.	NN
19395	475	19	82	82	CD
19395	475	20	)	)	-RRB-
19395	475	21	causes	cause	VBZ
19395	475	22	their	-PRON-	PRP$
19395	475	23	temperature	temperature	NN
19395	475	24	to	to	TO
19395	475	25	rise	rise	VB
19395	475	26	,	,	,
19395	475	27	while	while	IN
19395	475	28	their	-PRON-	PRP$
19395	475	29	color	color	NN
19395	475	30	changes	change	NNS
19395	475	31	from	from	IN
19395	475	32	red	red	JJ
19395	475	33	to	to	IN
19395	475	34	bluish	bluish	NNP
19395	475	35	white	white	NNP
19395	475	36	.	.	.
19395	476	1	The	the	DT
19395	476	2	process	process	NN
19395	476	3	of	of	IN
19395	476	4	shrinkage	shrinkage	NN
19395	476	5	and	and	CC
19395	476	6	rise	rise	NN
19395	476	7	of	of	IN
19395	476	8	temperature	temperature	NN
19395	476	9	goes	go	VBZ
19395	476	10	on	on	RP
19395	476	11	so	so	RB
19395	476	12	long	long	RB
19395	476	13	as	as	IN
19395	476	14	they	-PRON-	PRP
19395	476	15	remain	remain	VBP
19395	476	16	in	in	IN
19395	476	17	the	the	DT
19395	476	18	state	state	NN
19395	476	19	of	of	IN
19395	476	20	a	a	DT
19395	476	21	perfect	perfect	JJ
19395	476	22	gas	gas	NN
19395	476	23	.	.	.
19395	477	1	But	but	CC
19395	477	2	as	as	RB
19395	477	3	soon	soon	RB
19395	477	4	as	as	IN
19395	477	5	contraction	contraction	NN
19395	477	6	has	have	VBZ
19395	477	7	increased	increase	VBN
19395	477	8	the	the	DT
19395	477	9	density	density	NN
19395	477	10	of	of	IN
19395	477	11	the	the	DT
19395	477	12	gas	gas	NN
19395	477	13	beyond	beyond	IN
19395	477	14	a	a	DT
19395	477	15	certain	certain	JJ
19395	477	16	point	point	NN
19395	477	17	the	the	DT
19395	477	18	cycle	cycle	NN
19395	477	19	reverses	reverse	VBZ
19395	477	20	and	and	CC
19395	477	21	the	the	DT
19395	477	22	temperature	temperature	NN
19395	477	23	begins	begin	VBZ
19395	477	24	to	to	TO
19395	477	25	fall	fall	VB
19395	477	26	.	.	.
19395	478	1	The	the	DT
19395	478	2	bluish	bluish	JJ
19395	478	3	-	-	HYPH
19395	478	4	white	white	JJ
19395	478	5	light	light	NN
19395	478	6	of	of	IN
19395	478	7	the	the	DT
19395	478	8	star	star	NN
19395	478	9	turns	turn	VBZ
19395	478	10	yellowish	yellowish	JJ
19395	478	11	,	,	,
19395	478	12	and	and	CC
19395	478	13	we	-PRON-	PRP
19395	478	14	enter	enter	VBP
19395	478	15	the	the	DT
19395	478	16	dwarf	dwarf	NN
19395	478	17	stage	stage	NN
19395	478	18	,	,	,
19395	478	19	of	of	IN
19395	478	20	which	which	WDT
19395	478	21	our	-PRON-	PRP$
19395	478	22	own	own	JJ
19395	478	23	sun	sun	NN
19395	478	24	is	be	VBZ
19395	478	25	a	a	DT
19395	478	26	representative	representative	NN
19395	478	27	.	.	.
19395	479	1	The	the	DT
19395	479	2	density	density	NN
19395	479	3	increases	increase	VBZ
19395	479	4	,	,	,
19395	479	5	surpassing	surpass	VBG
19395	479	6	that	that	DT
19395	479	7	of	of	IN
19395	479	8	water	water	NN
19395	479	9	in	in	IN
19395	479	10	the	the	DT
19395	479	11	case	case	NN
19395	479	12	of	of	IN
19395	479	13	the	the	DT
19395	479	14	sun	sun	NN
19395	479	15	,	,	,
19395	479	16	and	and	CC
19395	479	17	going	go	VBG
19395	479	18	far	far	RB
19395	479	19	beyond	beyond	IN
19395	479	20	this	this	DT
19395	479	21	point	point	NN
19395	479	22	in	in	IN
19395	479	23	later	later	JJ
19395	479	24	stages	stage	NNS
19395	479	25	.	.	.
19395	480	1	In	in	IN
19395	480	2	the	the	DT
19395	480	3	lapse	lapse	NN
19395	480	4	of	of	IN
19395	480	5	millions	million	NNS
19395	480	6	of	of	IN
19395	480	7	years	year	NNS
19395	480	8	a	a	DT
19395	480	9	reddish	reddish	JJ
19395	480	10	hue	hue	NN
19395	480	11	appears	appear	VBZ
19395	480	12	,	,	,
19395	480	13	finally	finally	RB
19395	480	14	turning	turn	VBG
19395	480	15	to	to	IN
19395	480	16	deep	deep	JJ
19395	480	17	red	red	NN
19395	480	18	.	.	.
19395	481	1	The	the	DT
19395	481	2	falling	fall	VBG
19395	481	3	temperature	temperature	NN
19395	481	4	permits	permit	VBZ
19395	481	5	the	the	DT
19395	481	6	chemical	chemical	NN
19395	481	7	elements	element	NNS
19395	481	8	,	,	,
19395	481	9	existing	exist	VBG
19395	481	10	in	in	IN
19395	481	11	a	a	DT
19395	481	12	gaseous	gaseous	JJ
19395	481	13	state	state	NN
19395	481	14	in	in	IN
19395	481	15	the	the	DT
19395	481	16	outer	outer	JJ
19395	481	17	atmosphere	atmosphere	NN
19395	481	18	of	of	IN
19395	481	19	the	the	DT
19395	481	20	star	star	NN
19395	481	21	,	,	,
19395	481	22	to	to	TO
19395	481	23	unite	unite	VB
19395	481	24	into	into	IN
19395	481	25	compounds	compound	NNS
19395	481	26	,	,	,
19395	481	27	which	which	WDT
19395	481	28	are	be	VBP
19395	481	29	rendered	render	VBN
19395	481	30	conspicuous	conspicuous	JJ
19395	481	31	by	by	IN
19395	481	32	their	-PRON-	PRP$
19395	481	33	characteristic	characteristic	JJ
19395	481	34	bands	band	NNS
19395	481	35	in	in	IN
19395	481	36	the	the	DT
19395	481	37	spectrum	spectrum	NN
19395	481	38	.	.	.
19395	482	1	Finally	finally	RB
19395	482	2	comes	come	VBZ
19395	482	3	extinction	extinction	NN
19395	482	4	of	of	IN
19395	482	5	light	light	NN
19395	482	6	,	,	,
19395	482	7	as	as	IN
19395	482	8	the	the	DT
19395	482	9	star	star	NN
19395	482	10	approaches	approach	VBZ
19395	482	11	its	-PRON-	PRP$
19395	482	12	ultimate	ultimate	JJ
19395	482	13	state	state	NN
19395	482	14	of	of	IN
19395	482	15	a	a	DT
19395	482	16	cold	cold	JJ
19395	482	17	and	and	CC
19395	482	18	solid	solid	JJ
19395	482	19	globe	globe	NN
19395	482	20	.	.	.
19395	483	1	[	[	-LRB-
19395	483	2	Illustration	illustration	NN
19395	483	3	:	:	:
19395	483	4	Fig	Fig	NNP
19395	483	5	.	.	.
19395	484	1	27	27	CD
19395	484	2	.	.	.
19395	485	1	The	the	DT
19395	485	2	giant	giant	JJ
19395	485	3	star	star	NN
19395	485	4	Antares	Antares	NNPS
19395	485	5	(	(	-LRB-
19395	485	6	within	within	IN
19395	485	7	the	the	DT
19395	485	8	white	white	NNP
19395	485	9	circle	circle	NNP
19395	485	10	)	)	-RRB-
19395	485	11	,	,	,
19395	485	12	notable	notable	JJ
19395	485	13	for	for	IN
19395	485	14	its	-PRON-	PRP$
19395	485	15	red	red	JJ
19395	485	16	color	color	NN
19395	485	17	in	in	IN
19395	485	18	the	the	DT
19395	485	19	constellation	constellation	NN
19395	485	20	Scorpio	Scorpio	NNP
19395	485	21	,	,	,
19395	485	22	and	and	CC
19395	485	23	named	name	VBN
19395	485	24	by	by	IN
19395	485	25	the	the	DT
19395	485	26	Greeks	Greeks	NNPS
19395	485	27	"	"	``
19395	485	28	A	A	NNP
19395	485	29	Rival	rival	NN
19395	485	30	of	of	IN
19395	485	31	Mars	Mars	NNP
19395	485	32	"	"	''
19395	485	33	(	(	-LRB-
19395	485	34	Hubble	Hubble	NNP
19395	485	35	)	)	-RRB-
19395	485	36	.	.	.
19395	486	1	The	the	DT
19395	486	2	distance	distance	NN
19395	486	3	of	of	IN
19395	486	4	Antares	Antares	NNP
19395	486	5	,	,	,
19395	486	6	though	though	IN
19395	486	7	not	not	RB
19395	486	8	very	very	RB
19395	486	9	accurately	accurately	RB
19395	486	10	known	know	VBN
19395	486	11	,	,	,
19395	486	12	is	be	VBZ
19395	486	13	probably	probably	RB
19395	486	14	not	not	RB
19395	486	15	far	far	RB
19395	486	16	from	from	IN
19395	486	17	350	350	CD
19395	486	18	light	light	NN
19395	486	19	-	-	HYPH
19395	486	20	years	year	NNS
19395	486	21	.	.	.
19395	487	1	Its	-PRON-	PRP$
19395	487	2	angular	angular	JJ
19395	487	3	diameter	diameter	NN
19395	487	4	of	of	IN
19395	487	5	0.040	0.040	CD
19395	487	6	of	of	IN
19395	487	7	a	a	DT
19395	487	8	second	second	JJ
19395	487	9	would	would	MD
19395	487	10	thus	thus	RB
19395	487	11	correspond	correspond	VB
19395	487	12	to	to	IN
19395	487	13	a	a	DT
19395	487	14	linear	linear	JJ
19395	487	15	diameter	diameter	NN
19395	487	16	of	of	IN
19395	487	17	about	about	IN
19395	487	18	400	400	CD
19395	487	19	million	million	CD
19395	487	20	miles	mile	NNS
19395	487	21	.	.	.
19395	487	22	]	]	-RRB-
19395	488	1	We	-PRON-	PRP
19395	488	2	may	may	MD
19395	488	3	thus	thus	RB
19395	488	4	form	form	VB
19395	488	5	a	a	DT
19395	488	6	new	new	JJ
19395	488	7	picture	picture	NN
19395	488	8	of	of	IN
19395	488	9	the	the	DT
19395	488	10	two	two	CD
19395	488	11	branches	branch	NNS
19395	488	12	of	of	IN
19395	488	13	the	the	DT
19395	488	14	temperature	temperature	NN
19395	488	15	curve	curve	NN
19395	488	16	,	,	,
19395	488	17	long	long	RB
19395	488	18	since	since	IN
19395	488	19	suggested	suggest	VBN
19395	488	20	by	by	IN
19395	488	21	Lockyer	Lockyer	NNP
19395	488	22	,	,	,
19395	488	23	on	on	IN
19395	488	24	very	very	RB
19395	488	25	different	different	JJ
19395	488	26	grounds	ground	NNS
19395	488	27	,	,	,
19395	488	28	as	as	IN
19395	488	29	the	the	DT
19395	488	30	outline	outline	NN
19395	488	31	of	of	IN
19395	488	32	stellar	stellar	JJ
19395	488	33	life	life	NN
19395	488	34	.	.	.
19395	489	1	On	on	IN
19395	489	2	the	the	DT
19395	489	3	ascending	ascend	VBG
19395	489	4	side	side	NN
19395	489	5	are	be	VBP
19395	489	6	the	the	DT
19395	489	7	giants	giant	NNS
19395	489	8	,	,	,
19395	489	9	of	of	IN
19395	489	10	vast	vast	JJ
19395	489	11	dimensions	dimension	NNS
19395	489	12	and	and	CC
19395	489	13	more	more	JJR
19395	489	14	diffuse	diffuse	NN
19395	489	15	than	than	IN
19395	489	16	the	the	DT
19395	489	17	air	air	NN
19395	489	18	we	-PRON-	PRP
19395	489	19	breathe	breathe	VBP
19395	489	20	.	.	.
19395	490	1	There	there	EX
19395	490	2	are	be	VBP
19395	490	3	good	good	JJ
19395	490	4	reasons	reason	NNS
19395	490	5	for	for	IN
19395	490	6	believing	believe	VBG
19395	490	7	that	that	IN
19395	490	8	the	the	DT
19395	490	9	mass	mass	NN
19395	490	10	of	of	IN
19395	490	11	Betelgeuse	Betelgeuse	NNP
19395	490	12	can	can	MD
19395	490	13	not	not	RB
19395	490	14	be	be	VB
19395	490	15	more	more	JJR
19395	490	16	than	than	IN
19395	490	17	ten	ten	CD
19395	490	18	times	time	NNS
19395	490	19	that	that	DT
19395	490	20	of	of	IN
19395	490	21	the	the	DT
19395	490	22	sun	sun	NN
19395	490	23	,	,	,
19395	490	24	while	while	IN
19395	490	25	its	-PRON-	PRP$
19395	490	26	volume	volume	NN
19395	490	27	is	be	VBZ
19395	490	28	at	at	IN
19395	490	29	least	least	JJS
19395	490	30	a	a	DT
19395	490	31	million	million	CD
19395	490	32	times	time	NNS
19395	490	33	as	as	RB
19395	490	34	great	great	JJ
19395	490	35	and	and	CC
19395	490	36	may	may	MD
19395	490	37	exceed	exceed	VB
19395	490	38	eight	eight	CD
19395	490	39	million	million	CD
19395	490	40	times	time	NNS
19395	490	41	the	the	DT
19395	490	42	sun	sun	NN
19395	490	43	's	's	POS
19395	490	44	volume	volume	NN
19395	490	45	.	.	.
19395	491	1	Therefore	therefore	RB
19395	491	2	,	,	,
19395	491	3	its	-PRON-	PRP$
19395	491	4	average	average	JJ
19395	491	5	density	density	NN
19395	491	6	must	must	MD
19395	491	7	be	be	VB
19395	491	8	like	like	IN
19395	491	9	that	that	DT
19395	491	10	of	of	IN
19395	491	11	an	an	DT
19395	491	12	attenuated	attenuate	VBN
19395	491	13	gas	gas	NN
19395	491	14	in	in	IN
19395	491	15	an	an	DT
19395	491	16	electric	electric	JJ
19395	491	17	vacuum	vacuum	NN
19395	491	18	tube	tube	NN
19395	491	19	.	.	.
19395	492	1	Three	three	CD
19395	492	2	-	-	HYPH
19395	492	3	quarters	quarter	NNS
19395	492	4	of	of	IN
19395	492	5	the	the	DT
19395	492	6	naked	naked	JJ
19395	492	7	-	-	HYPH
19395	492	8	eye	eye	NN
19395	492	9	stars	star	NNS
19395	492	10	are	be	VBP
19395	492	11	in	in	IN
19395	492	12	the	the	DT
19395	492	13	giant	giant	JJ
19395	492	14	stage	stage	NN
19395	492	15	,	,	,
19395	492	16	which	which	WDT
19395	492	17	comprises	comprise	VBZ
19395	492	18	such	such	JJ
19395	492	19	familiar	familiar	JJ
19395	492	20	objects	object	NNS
19395	492	21	as	as	IN
19395	492	22	Betelgeuse	Betelgeuse	NNP
19395	492	23	,	,	,
19395	492	24	Antares	Antares	NNP
19395	492	25	,	,	,
19395	492	26	and	and	CC
19395	492	27	Aldebaran	Aldebaran	NNP
19395	492	28	,	,	,
19395	492	29	but	but	CC
19395	492	30	most	most	JJS
19395	492	31	of	of	IN
19395	492	32	them	-PRON-	PRP
19395	492	33	are	be	VBP
19395	492	34	much	much	RB
19395	492	35	denser	denser	NN
19395	492	36	than	than	IN
19395	492	37	these	these	DT
19395	492	38	greatly	greatly	RB
19395	492	39	inflated	inflated	JJ
19395	492	40	bodies	body	NNS
19395	492	41	.	.	.
19395	493	1	The	the	DT
19395	493	2	pinnacle	pinnacle	NN
19395	493	3	is	be	VBZ
19395	493	4	reached	reach	VBN
19395	493	5	in	in	IN
19395	493	6	the	the	DT
19395	493	7	intensely	intensely	RB
19395	493	8	hot	hot	JJ
19395	493	9	white	white	JJ
19395	493	10	stars	star	NNS
19395	493	11	of	of	IN
19395	493	12	the	the	DT
19395	493	13	helium	helium	NN
19395	493	14	class	class	NN
19395	493	15	,	,	,
19395	493	16	in	in	IN
19395	493	17	whose	whose	WP$
19395	493	18	spectra	spectra	NNP
19395	493	19	the	the	DT
19395	493	20	lines	line	NNS
19395	493	21	of	of	IN
19395	493	22	this	this	DT
19395	493	23	gas	gas	NN
19395	493	24	are	be	VBP
19395	493	25	very	very	RB
19395	493	26	conspicuous	conspicuous	JJ
19395	493	27	.	.	.
19395	494	1	The	the	DT
19395	494	2	density	density	NN
19395	494	3	of	of	IN
19395	494	4	these	these	DT
19395	494	5	stars	star	NNS
19395	494	6	is	be	VBZ
19395	494	7	perhaps	perhaps	RB
19395	494	8	one	one	CD
19395	494	9	-	-	HYPH
19395	494	10	tenth	tenth	NN
19395	494	11	that	that	DT
19395	494	12	of	of	IN
19395	494	13	the	the	DT
19395	494	14	sun	sun	NN
19395	494	15	.	.	.
19395	495	1	Sirius	sirius	NN
19395	495	2	,	,	,
19395	495	3	also	also	RB
19395	495	4	very	very	RB
19395	495	5	hot	hot	JJ
19395	495	6	,	,	,
19395	495	7	is	be	VBZ
19395	495	8	nearly	nearly	RB
19395	495	9	twice	twice	RB
19395	495	10	as	as	RB
19395	495	11	dense	dense	JJ
19395	495	12	.	.	.
19395	496	1	Then	then	RB
19395	496	2	comes	come	VBZ
19395	496	3	the	the	DT
19395	496	4	cooling	cool	VBG
19395	496	5	stage	stage	NN
19395	496	6	,	,	,
19395	496	7	characterized	characterize	VBN
19395	496	8	,	,	,
19395	496	9	as	as	IN
19395	496	10	already	already	RB
19395	496	11	remarked	remark	VBN
19395	496	12	,	,	,
19395	496	13	by	by	IN
19395	496	14	increasing	increase	VBG
19395	496	15	density	density	NN
19395	496	16	,	,	,
19395	496	17	and	and	CC
19395	496	18	also	also	RB
19395	496	19	by	by	IN
19395	496	20	increasing	increase	VBG
19395	496	21	chemical	chemical	NN
19395	496	22	complexity	complexity	NN
19395	496	23	resulting	result	VBG
19395	496	24	from	from	IN
19395	496	25	falling	fall	VBG
19395	496	26	temperature	temperature	NN
19395	496	27	.	.	.
19395	497	1	This	this	DT
19395	497	2	life	life	NN
19395	497	3	cycle	cycle	NN
19395	497	4	is	be	VBZ
19395	497	5	probably	probably	RB
19395	497	6	not	not	RB
19395	497	7	followed	follow	VBN
19395	497	8	by	by	IN
19395	497	9	all	all	DT
19395	497	10	stars	star	NNS
19395	497	11	,	,	,
19395	497	12	but	but	CC
19395	497	13	it	-PRON-	PRP
19395	497	14	may	may	MD
19395	497	15	hold	hold	VB
19395	497	16	true	true	JJ
19395	497	17	for	for	IN
19395	497	18	millions	million	NNS
19395	497	19	of	of	IN
19395	497	20	them	-PRON-	PRP
19395	497	21	.	.	.
19395	498	1	The	the	DT
19395	498	2	existence	existence	NN
19395	498	3	of	of	IN
19395	498	4	giant	giant	NN
19395	498	5	and	and	CC
19395	498	6	dwarf	dwarf	NN
19395	498	7	stars	star	NNS
19395	498	8	has	have	VBZ
19395	498	9	been	be	VBN
19395	498	10	fully	fully	RB
19395	498	11	proved	prove	VBN
19395	498	12	by	by	IN
19395	498	13	the	the	DT
19395	498	14	remarkable	remarkable	JJ
19395	498	15	work	work	NN
19395	498	16	of	of	IN
19395	498	17	Adams	Adams	NNP
19395	498	18	and	and	CC
19395	498	19	his	-PRON-	PRP$
19395	498	20	associates	associate	NNS
19395	498	21	on	on	IN
19395	498	22	Mount	Mount	NNP
19395	498	23	Wilson	Wilson	NNP
19395	498	24	,	,	,
19395	498	25	where	where	WRB
19395	498	26	his	-PRON-	PRP$
19395	498	27	method	method	NN
19395	498	28	of	of	IN
19395	498	29	determining	determine	VBG
19395	498	30	a	a	DT
19395	498	31	star	star	NN
19395	498	32	's	's	POS
19395	498	33	distance	distance	NN
19395	498	34	and	and	CC
19395	498	35	intrinsic	intrinsic	JJ
19395	498	36	luminosity	luminosity	NN
19395	498	37	by	by	IN
19395	498	38	spectroscopic	spectroscopic	JJ
19395	498	39	observations	observation	NNS
19395	498	40	has	have	VBZ
19395	498	41	already	already	RB
19395	498	42	been	be	VBN
19395	498	43	applied	apply	VBN
19395	498	44	to	to	IN
19395	498	45	2,000	2,000	CD
19395	498	46	stars	star	NNS
19395	498	47	.	.	.
19395	499	1	Discussion	discussion	NN
19395	499	2	of	of	IN
19395	499	3	the	the	DT
19395	499	4	results	result	NNS
19395	499	5	leads	lead	VBZ
19395	499	6	at	at	IN
19395	499	7	once	once	RB
19395	499	8	to	to	IN
19395	499	9	the	the	DT
19395	499	10	recognition	recognition	NN
19395	499	11	of	of	IN
19395	499	12	the	the	DT
19395	499	13	two	two	CD
19395	499	14	great	great	JJ
19395	499	15	classes	class	NNS
19395	499	16	of	of	IN
19395	499	17	giants	giant	NNS
19395	499	18	and	and	CC
19395	499	19	dwarfs	dwarf	NNS
19395	499	20	.	.	.
19395	500	1	Now	now	RB
19395	500	2	comes	come	VBZ
19395	500	3	the	the	DT
19395	500	4	work	work	NN
19395	500	5	of	of	IN
19395	500	6	Michelson	Michelson	NNP
19395	500	7	and	and	CC
19395	500	8	Pease	Pease	NNP
19395	500	9	to	to	TO
19395	500	10	cap	cap	VB
19395	500	11	the	the	DT
19395	500	12	climax	climax	NN
19395	500	13	,	,	,
19395	500	14	giving	give	VBG
19395	500	15	us	-PRON-	PRP
19395	500	16	the	the	DT
19395	500	17	actual	actual	JJ
19395	500	18	diameter	diameter	NN
19395	500	19	of	of	IN
19395	500	20	a	a	DT
19395	500	21	typical	typical	JJ
19395	500	22	giant	giant	JJ
19395	500	23	star	star	NN
19395	500	24	,	,	,
19395	500	25	in	in	IN
19395	500	26	close	close	JJ
19395	500	27	agreement	agreement	NN
19395	500	28	with	with	IN
19395	500	29	predictions	prediction	NNS
19395	500	30	based	base	VBN
19395	500	31	upon	upon	IN
19395	500	32	theory	theory	NN
19395	500	33	.	.	.
19395	501	1	From	from	IN
19395	501	2	this	this	DT
19395	501	3	diameter	diameter	NN
19395	501	4	we	-PRON-	PRP
19395	501	5	may	may	MD
19395	501	6	conclude	conclude	VB
19395	501	7	that	that	IN
19395	501	8	the	the	DT
19395	501	9	density	density	NN
19395	501	10	of	of	IN
19395	501	11	Betelgeuse	Betelgeuse	NNP
19395	501	12	is	be	VBZ
19395	501	13	extremely	extremely	RB
19395	501	14	low	low	JJ
19395	501	15	,	,	,
19395	501	16	in	in	IN
19395	501	17	harmony	harmony	NN
19395	501	18	with	with	IN
19395	501	19	Russell	Russell	NNP
19395	501	20	's	's	POS
19395	501	21	theory	theory	NN
19395	501	22	,	,	,
19395	501	23	which	which	WDT
19395	501	24	is	be	VBZ
19395	501	25	further	further	RB
19395	501	26	supported	support	VBN
19395	501	27	by	by	IN
19395	501	28	spectroscopic	spectroscopic	JJ
19395	501	29	analysis	analysis	NN
19395	501	30	of	of	IN
19395	501	31	the	the	DT
19395	501	32	star	star	NN
19395	501	33	's	's	POS
19395	501	34	light	light	NN
19395	501	35	,	,	,
19395	501	36	revealing	reveal	VBG
19395	501	37	evidence	evidence	NN
19395	501	38	of	of	IN
19395	501	39	the	the	DT
19395	501	40	comparatively	comparatively	RB
19395	501	41	low	low	JJ
19395	501	42	temperature	temperature	NN
19395	501	43	called	call	VBN
19395	501	44	for	for	IN
19395	501	45	by	by	IN
19395	501	46	the	the	DT
19395	501	47	theory	theory	NN
19395	501	48	at	at	IN
19395	501	49	this	this	DT
19395	501	50	early	early	JJ
19395	501	51	stage	stage	NN
19395	501	52	of	of	IN
19395	501	53	stellar	stellar	JJ
19395	501	54	existence	existence	NN
19395	501	55	.	.	.
19395	502	1	TWO	two	CD
19395	502	2	OTHER	other	JJ
19395	502	3	GIANTS	giant	NNS
19395	502	4	The	the	DT
19395	502	5	diameter	diameter	NN
19395	502	6	of	of	IN
19395	502	7	Arcturus	Arcturus	NNP
19395	502	8	was	be	VBD
19395	502	9	successfully	successfully	RB
19395	502	10	measured	measure	VBN
19395	502	11	by	by	IN
19395	502	12	Mr.	Mr.	NNP
19395	502	13	Pease	Pease	NNP
19395	502	14	at	at	IN
19395	502	15	Mount	Mount	NNP
19395	502	16	Wilson	Wilson	NNP
19395	502	17	on	on	IN
19395	502	18	April	April	NNP
19395	502	19	15	15	CD
19395	502	20	.	.	.
19395	503	1	As	as	IN
19395	503	2	the	the	DT
19395	503	3	mirrors	mirror	NNS
19395	503	4	of	of	IN
19395	503	5	the	the	DT
19395	503	6	interferometer	interferometer	NN
19395	503	7	were	be	VBD
19395	503	8	moved	move	VBN
19395	503	9	apart	apart	RB
19395	503	10	,	,	,
19395	503	11	the	the	DT
19395	503	12	fringes	fringe	NNS
19395	503	13	gradually	gradually	RB
19395	503	14	decreased	decrease	VBD
19395	503	15	in	in	IN
19395	503	16	visibility	visibility	NN
19395	503	17	until	until	IN
19395	503	18	they	-PRON-	PRP
19395	503	19	finally	finally	RB
19395	503	20	disappeared	disappear	VBD
19395	503	21	at	at	IN
19395	503	22	a	a	DT
19395	503	23	mirror	mirror	NN
19395	503	24	separation	separation	NN
19395	503	25	of	of	IN
19395	503	26	19.6	19.6	CD
19395	503	27	feet	foot	NNS
19395	503	28	.	.	.
19395	504	1	Adopting	adopt	VBG
19395	504	2	a	a	DT
19395	504	3	mean	mean	JJ
19395	504	4	wave	wave	NN
19395	504	5	-	-	HYPH
19395	504	6	length	length	NN
19395	504	7	of	of	IN
19395	504	8	5600/10000000	5600/10000000	CD
19395	504	9	of	of	IN
19395	504	10	a	a	DT
19395	504	11	millimetre	millimetre	NN
19395	504	12	for	for	IN
19395	504	13	the	the	DT
19395	504	14	light	light	NN
19395	504	15	of	of	IN
19395	504	16	Arcturus	Arcturus	NNP
19395	504	17	,	,	,
19395	504	18	this	this	DT
19395	504	19	gives	give	VBZ
19395	504	20	a	a	DT
19395	504	21	value	value	NN
19395	504	22	of	of	IN
19395	504	23	0.022	0.022	CD
19395	504	24	of	of	IN
19395	504	25	a	a	DT
19395	504	26	second	second	NN
19395	504	27	of	of	IN
19395	504	28	arc	arc	NN
19395	504	29	for	for	IN
19395	504	30	the	the	DT
19395	504	31	angular	angular	JJ
19395	504	32	diameter	diameter	NN
19395	504	33	of	of	IN
19395	504	34	the	the	DT
19395	504	35	star	star	NN
19395	504	36	.	.	.
19395	505	1	If	if	IN
19395	505	2	we	-PRON-	PRP
19395	505	3	use	use	VBP
19395	505	4	a	a	DT
19395	505	5	mean	mean	JJ
19395	505	6	value	value	NN
19395	505	7	of	of	IN
19395	505	8	0.095	0.095	CD
19395	505	9	of	of	IN
19395	505	10	a	a	DT
19395	505	11	second	second	NN
19395	505	12	for	for	IN
19395	505	13	the	the	DT
19395	505	14	parallax	parallax	NN
19395	505	15	,	,	,
19395	505	16	the	the	DT
19395	505	17	corresponding	corresponding	JJ
19395	505	18	linear	linear	JJ
19395	505	19	diameter	diameter	NN
19395	505	20	comes	come	VBZ
19395	505	21	out	out	RP
19395	505	22	21,000,000	21,000,000	CD
19395	505	23	miles	mile	NNS
19395	505	24	.	.	.
19395	506	1	The	the	DT
19395	506	2	angular	angular	JJ
19395	506	3	diameter	diameter	NN
19395	506	4	,	,	,
19395	506	5	as	as	IN
19395	506	6	in	in	IN
19395	506	7	the	the	DT
19395	506	8	case	case	NN
19395	506	9	of	of	IN
19395	506	10	Betelgeuse	Betelgeuse	NNP
19395	506	11	,	,	,
19395	506	12	is	be	VBZ
19395	506	13	in	in	IN
19395	506	14	remarkably	remarkably	RB
19395	506	15	close	close	JJ
19395	506	16	agreement	agreement	NN
19395	506	17	with	with	IN
19395	506	18	the	the	DT
19395	506	19	diameter	diameter	NN
19395	506	20	predicted	predict	VBN
19395	506	21	from	from	IN
19395	506	22	theory	theory	NN
19395	506	23	.	.	.
19395	507	1	Antares	antare	NNS
19395	507	2	,	,	,
19395	507	3	the	the	DT
19395	507	4	third	third	JJ
19395	507	5	star	star	NN
19395	507	6	measured	measure	VBN
19395	507	7	by	by	IN
19395	507	8	Mr.	Mr.	NNP
19395	507	9	Pease	Pease	NNP
19395	507	10	,	,	,
19395	507	11	is	be	VBZ
19395	507	12	the	the	DT
19395	507	13	largest	large	JJS
19395	507	14	of	of	IN
19395	507	15	all	all	DT
19395	507	16	.	.	.
19395	508	1	If	if	IN
19395	508	2	it	-PRON-	PRP
19395	508	3	is	be	VBZ
19395	508	4	actually	actually	RB
19395	508	5	a	a	DT
19395	508	6	member	member	NN
19395	508	7	of	of	IN
19395	508	8	the	the	DT
19395	508	9	Scorpius	Scorpius	NNP
19395	508	10	-	-	HYPH
19395	508	11	Centaurus	Centaurus	NNP
19395	508	12	group	group	NN
19395	508	13	,	,	,
19395	508	14	as	as	IN
19395	508	15	we	-PRON-	PRP
19395	508	16	have	have	VBP
19395	508	17	strong	strong	JJ
19395	508	18	reason	reason	NN
19395	508	19	to	to	TO
19395	508	20	believe	believe	VB
19395	508	21	,	,	,
19395	508	22	it	-PRON-	PRP
19395	508	23	is	be	VBZ
19395	508	24	fully	fully	RB
19395	508	25	350	350	CD
19395	508	26	light	light	NN
19395	508	27	-	-	HYPH
19395	508	28	years	year	NNS
19395	508	29	from	from	IN
19395	508	30	the	the	DT
19395	508	31	earth	earth	NN
19395	508	32	,	,	,
19395	508	33	and	and	CC
19395	508	34	its	-PRON-	PRP$
19395	508	35	diameter	diameter	NN
19395	508	36	is	be	VBZ
19395	508	37	about	about	RB
19395	508	38	400,000,000	400,000,000	CD
19395	508	39	miles	mile	NNS
19395	508	40	.	.	.
19395	509	1	[	[	-LRB-
19395	509	2	Illustration	illustration	NN
19395	509	3	:	:	:
19395	509	4	Fig	Fig	NNP
19395	509	5	.	.	.
19395	510	1	28	28	CD
19395	510	2	.	.	.
19395	511	1	Diameters	diameter	NNS
19395	511	2	of	of	IN
19395	511	3	the	the	DT
19395	511	4	Sun	Sun	NNP
19395	511	5	,	,	,
19395	511	6	Arcturus	Arcturus	NNP
19395	511	7	,	,	,
19395	511	8	Betelgeuse	Betelgeuse	NNP
19395	511	9	,	,	,
19395	511	10	and	and	CC
19395	511	11	Antares	Antares	NNPS
19395	511	12	compared	compare	VBN
19395	511	13	with	with	IN
19395	511	14	the	the	DT
19395	511	15	orbit	orbit	NN
19395	511	16	of	of	IN
19395	511	17	Mars	Mars	NNP
19395	511	18	.	.	.
19395	512	1	Sun	Sun	NNP
19395	512	2	,	,	,
19395	512	3	diameter	diameter	NN
19395	512	4	,	,	,
19395	512	5	865,000	865,000	CD
19395	512	6	miles	mile	NNS
19395	512	7	.	.	.
19395	513	1	Arcturus	Arcturus	NNP
19395	513	2	,	,	,
19395	513	3	diameter	diameter	NN
19395	513	4	,	,	,
19395	513	5	21,000,000	21,000,000	CD
19395	513	6	miles	mile	NNS
19395	513	7	.	.	.
19395	514	1	Betelgeuse	Betelgeuse	NNP
19395	514	2	,	,	,
19395	514	3	diameter	diameter	NN
19395	514	4	,	,	,
19395	514	5	215,000,000	215,000,000	CD
19395	514	6	miles	mile	NNS
19395	514	7	.	.	.
19395	515	1	Antares	antare	NNS
19395	515	2	,	,	,
19395	515	3	diameter	diameter	NN
19395	515	4	,	,	,
19395	515	5	400,000,000	400,000,000	CD
19395	515	6	miles	mile	NNS
19395	515	7	.	.	.
19395	515	8	]	]	-RRB-
19395	516	1	It	-PRON-	PRP
19395	516	2	now	now	RB
19395	516	3	remains	remain	VBZ
19395	516	4	to	to	TO
19395	516	5	make	make	VB
19395	516	6	further	further	JJ
19395	516	7	measures	measure	NNS
19395	516	8	of	of	IN
19395	516	9	Betelgeuse	Betelgeuse	NNP
19395	516	10	,	,	,
19395	516	11	especially	especially	RB
19395	516	12	because	because	IN
19395	516	13	its	-PRON-	PRP$
19395	516	14	marked	marked	JJ
19395	516	15	changes	change	NNS
19395	516	16	in	in	IN
19395	516	17	brightness	brightness	NN
19395	516	18	suggest	suggest	VBP
19395	516	19	possible	possible	JJ
19395	516	20	variations	variation	NNS
19395	516	21	in	in	IN
19395	516	22	diameter	diameter	NN
19395	516	23	.	.	.
19395	517	1	We	-PRON-	PRP
19395	517	2	must	must	MD
19395	517	3	also	also	RB
19395	517	4	apply	apply	VB
19395	517	5	the	the	DT
19395	517	6	interferometer	interferometer	NN
19395	517	7	method	method	NN
19395	517	8	to	to	IN
19395	517	9	stars	star	NNS
19395	517	10	of	of	IN
19395	517	11	the	the	DT
19395	517	12	various	various	JJ
19395	517	13	spectral	spectral	JJ
19395	517	14	types	type	NNS
19395	517	15	,	,	,
19395	517	16	in	in	IN
19395	517	17	order	order	NN
19395	517	18	to	to	TO
19395	517	19	afford	afford	VB
19395	517	20	a	a	DT
19395	517	21	sure	sure	JJ
19395	517	22	basis	basis	NN
19395	517	23	for	for	IN
19395	517	24	future	future	JJ
19395	517	25	studies	study	NNS
19395	517	26	of	of	IN
19395	517	27	stellar	stellar	JJ
19395	517	28	evolution	evolution	NN
19395	517	29	.	.	.
19395	518	1	Unfortunately	unfortunately	RB
19395	518	2	,	,	,
19395	518	3	only	only	RB
19395	518	4	a	a	DT
19395	518	5	few	few	JJ
19395	518	6	giant	giant	JJ
19395	518	7	stars	star	NNS
19395	518	8	are	be	VBP
19395	518	9	certain	certain	JJ
19395	518	10	to	to	TO
19395	518	11	fall	fall	VB
19395	518	12	within	within	IN
19395	518	13	the	the	DT
19395	518	14	range	range	NN
19395	518	15	of	of	IN
19395	518	16	our	-PRON-	PRP$
19395	518	17	present	present	JJ
19395	518	18	instrument	instrument	NN
19395	518	19	.	.	.
19395	519	1	An	an	DT
19395	519	2	interferometer	interferometer	NN
19395	519	3	of	of	IN
19395	519	4	70-feet	70-feet	CD
19395	519	5	aperture	aperture	NN
19395	519	6	would	would	MD
19395	519	7	be	be	VB
19395	519	8	needed	need	VBN
19395	519	9	to	to	TO
19395	519	10	measure	measure	VB
19395	519	11	Sirius	Sirius	NNP
19395	519	12	accurately	accurately	RB
19395	519	13	,	,	,
19395	519	14	and	and	CC
19395	519	15	one	one	CD
19395	519	16	of	of	IN
19395	519	17	twice	twice	PDT
19395	519	18	this	this	DT
19395	519	19	size	size	NN
19395	519	20	to	to	TO
19395	519	21	deal	deal	VB
19395	519	22	with	with	IN
19395	519	23	less	less	RBR
19395	519	24	brilliant	brilliant	JJ
19395	519	25	white	white	JJ
19395	519	26	stars	star	NNS
19395	519	27	.	.	.
19395	520	1	A	a	DT
19395	520	2	100-foot	100-foot	CD
19395	520	3	instrument	instrument	NN
19395	520	4	,	,	,
19395	520	5	if	if	IN
19395	520	6	feasible	feasible	JJ
19395	520	7	to	to	TO
19395	520	8	build	build	VB
19395	520	9	,	,	,
19395	520	10	would	would	MD
19395	520	11	permit	permit	VB
19395	520	12	objects	object	NNS
19395	520	13	representing	represent	VBG
19395	520	14	most	most	JJS
19395	520	15	of	of	IN
19395	520	16	the	the	DT
19395	520	17	chief	chief	JJ
19395	520	18	stages	stage	NNS
19395	520	19	of	of	IN
19395	520	20	stellar	stellar	JJ
19395	520	21	development	development	NN
19395	520	22	to	to	TO
19395	520	23	be	be	VB
19395	520	24	measured	measure	VBN
19395	520	25	,	,	,
19395	520	26	thus	thus	RB
19395	520	27	contributing	contribute	VBG
19395	520	28	in	in	RP
19395	520	29	the	the	DT
19395	520	30	highest	high	JJS
19395	520	31	degree	degree	NN
19395	520	32	to	to	IN
19395	520	33	the	the	DT
19395	520	34	progress	progress	NN
19395	520	35	of	of	IN
19395	520	36	our	-PRON-	PRP$
19395	520	37	knowledge	knowledge	NN
19395	520	38	of	of	IN
19395	520	39	the	the	DT
19395	520	40	life	life	NN
19395	520	41	history	history	NN
19395	520	42	of	of	IN
19395	520	43	the	the	DT
19395	520	44	stars	star	NNS
19395	520	45	.	.	.
19395	521	1	Fortunately	fortunately	RB
19395	521	2	,	,	,
19395	521	3	though	though	IN
19395	521	4	the	the	DT
19395	521	5	mechanical	mechanical	JJ
19395	521	6	difficulties	difficulty	NNS
19395	521	7	are	be	VBP
19395	521	8	great	great	JJ
19395	521	9	,	,	,
19395	521	10	the	the	DT
19395	521	11	optical	optical	JJ
19395	521	12	problem	problem	NN
19395	521	13	is	be	VBZ
19395	521	14	insignificant	insignificant	JJ
19395	521	15	,	,	,
19395	521	16	and	and	CC
19395	521	17	the	the	DT
19395	521	18	cost	cost	NN
19395	521	19	of	of	IN
19395	521	20	the	the	DT
19395	521	21	entire	entire	JJ
19395	521	22	apparatus	apparatus	NN
19395	521	23	,	,	,
19395	521	24	though	though	IN
19395	521	25	necessarily	necessarily	RB
19395	521	26	high	high	JJ
19395	521	27	,	,	,
19395	521	28	would	would	MD
19395	521	29	be	be	VB
19395	521	30	only	only	RB
19395	521	31	a	a	DT
19395	521	32	small	small	JJ
19395	521	33	fraction	fraction	NN
19395	521	34	of	of	IN
19395	521	35	that	that	DT
19395	521	36	of	of	IN
19395	521	37	a	a	DT
19395	521	38	telescope	telescope	NN
19395	521	39	of	of	IN
19395	521	40	corresponding	correspond	VBG
19395	521	41	aperture	aperture	NN
19395	521	42	,	,	,
19395	521	43	if	if	IN
19395	521	44	such	such	JJ
19395	521	45	could	could	MD
19395	521	46	be	be	VB
19395	521	47	built	build	VBN
19395	521	48	.	.	.
19395	522	1	A	a	DT
19395	522	2	100-foot	100-foot	CD
19395	522	3	interferometer	interferometer	NN
19395	522	4	might	may	MD
19395	522	5	be	be	VB
19395	522	6	designed	design	VBN
19395	522	7	in	in	IN
19395	522	8	many	many	JJ
19395	522	9	different	different	JJ
19395	522	10	forms	form	NNS
19395	522	11	,	,	,
19395	522	12	and	and	CC
19395	522	13	one	one	CD
19395	522	14	of	of	IN
19395	522	15	these	these	DT
19395	522	16	may	may	MD
19395	522	17	ultimately	ultimately	RB
19395	522	18	be	be	VB
19395	522	19	found	find	VBN
19395	522	20	to	to	TO
19395	522	21	be	be	VB
19395	522	22	within	within	IN
19395	522	23	the	the	DT
19395	522	24	range	range	NN
19395	522	25	of	of	IN
19395	522	26	possibility	possibility	NN
19395	522	27	.	.	.
19395	523	1	Meanwhile	meanwhile	RB
19395	523	2	the	the	DT
19395	523	3	20-foot	20-foot	CD
19395	523	4	interferometer	interferometer	NN
19395	523	5	has	have	VBZ
19395	523	6	been	be	VBN
19395	523	7	improved	improve	VBN
19395	523	8	so	so	RB
19395	523	9	materially	materially	RB
19395	523	10	that	that	IN
19395	523	11	it	-PRON-	PRP
19395	523	12	now	now	RB
19395	523	13	promises	promise	VBZ
19395	523	14	to	to	TO
19395	523	15	yield	yield	VB
19395	523	16	approximate	approximate	JJ
19395	523	17	measures	measure	NNS
19395	523	18	of	of	IN
19395	523	19	stars	star	NNS
19395	523	20	at	at	IN
19395	523	21	first	first	RB
19395	523	22	supposed	suppose	VBN
19395	523	23	to	to	TO
19395	523	24	be	be	VB
19395	523	25	beyond	beyond	IN
19395	523	26	its	-PRON-	PRP$
19395	523	27	capacity	capacity	NN
19395	523	28	.	.	.
19395	524	1	[	[	-LRB-
19395	524	2	Illustration	illustration	NN
19395	524	3	:	:	:
19395	524	4	Fig	Fig	NNP
19395	524	5	.	.	.
19395	525	1	29	29	CD
19395	525	2	.	.	.
19395	526	1	Aldebaran	Aldebaran	NNP
19395	526	2	,	,	,
19395	526	3	the	the	DT
19395	526	4	"	"	``
19395	526	5	leader	leader	NN
19395	526	6	"	"	''
19395	526	7	(	(	-LRB-
19395	526	8	of	of	IN
19395	526	9	the	the	DT
19395	526	10	Pleiades	Pleiades	NNP
19395	526	11	)	)	-RRB-
19395	526	12	,	,	,
19395	526	13	was	be	VBD
19395	526	14	also	also	RB
19395	526	15	known	know	VBN
19395	526	16	to	to	IN
19395	526	17	the	the	DT
19395	526	18	Arabs	Arabs	NNPS
19395	526	19	as	as	IN
19395	526	20	"	"	``
19395	526	21	The	the	DT
19395	526	22	Eye	Eye	NNP
19395	526	23	of	of	IN
19395	526	24	the	the	DT
19395	526	25	Bull	Bull	NNP
19395	526	26	,	,	,
19395	526	27	"	"	''
19395	526	28	"	"	``
19395	526	29	The	the	DT
19395	526	30	Heart	heart	NN
19395	526	31	of	of	IN
19395	526	32	the	the	DT
19395	526	33	Bull	Bull	NNP
19395	526	34	,	,	,
19395	526	35	"	"	''
19395	526	36	and	and	CC
19395	526	37	"	"	``
19395	526	38	The	the	DT
19395	526	39	Great	Great	NNP
19395	526	40	Camel	Camel	NNP
19395	526	41	"	"	''
19395	526	42	(	(	-LRB-
19395	526	43	Hubble	Hubble	NNP
19395	526	44	)	)	-RRB-
19395	526	45	.	.	.
19395	527	1	Like	like	IN
19395	527	2	Betelgeuse	Betelgeuse	NNP
19395	527	3	and	and	CC
19395	527	4	Antares	Antares	NNPS
19395	527	5	,	,	,
19395	527	6	it	-PRON-	PRP
19395	527	7	is	be	VBZ
19395	527	8	notable	notable	JJ
19395	527	9	for	for	IN
19395	527	10	its	-PRON-	PRP$
19395	527	11	red	red	JJ
19395	527	12	color	color	NN
19395	527	13	,	,	,
19395	527	14	which	which	WDT
19395	527	15	accounts	account	VBZ
19395	527	16	for	for	IN
19395	527	17	the	the	DT
19395	527	18	fact	fact	NN
19395	527	19	that	that	IN
19395	527	20	its	-PRON-	PRP$
19395	527	21	image	image	NN
19395	527	22	on	on	IN
19395	527	23	this	this	DT
19395	527	24	photograph	photograph	NN
19395	527	25	is	be	VBZ
19395	527	26	hardly	hardly	RB
19395	527	27	more	more	RBR
19395	527	28	conspicuous	conspicuous	JJ
19395	527	29	than	than	IN
19395	527	30	the	the	DT
19395	527	31	images	image	NNS
19395	527	32	of	of	IN
19395	527	33	stars	star	NNS
19395	527	34	which	which	WDT
19395	527	35	are	be	VBP
19395	527	36	actually	actually	RB
19395	527	37	much	much	JJ
19395	527	38	fainter	fainter	NN
19395	527	39	but	but	CC
19395	527	40	contain	contain	VBP
19395	527	41	a	a	DT
19395	527	42	larger	large	JJR
19395	527	43	proportion	proportion	NN
19395	527	44	of	of	IN
19395	527	45	blue	blue	JJ
19395	527	46	light	light	NN
19395	527	47	,	,	,
19395	527	48	to	to	TO
19395	527	49	which	which	WDT
19395	527	50	the	the	DT
19395	527	51	photographic	photographic	JJ
19395	527	52	plates	plate	NNS
19395	527	53	here	here	RB
19395	527	54	employed	employ	VBN
19395	527	55	are	be	VBP
19395	527	56	more	more	RBR
19395	527	57	sensitive	sensitive	JJ
19395	527	58	than	than	IN
19395	527	59	to	to	IN
19395	527	60	red	red	NN
19395	527	61	or	or	CC
19395	527	62	yellow	yellow	JJ
19395	527	63	.	.	.
19395	528	1	Aldebaran	Aldebaran	NNP
19395	528	2	is	be	VBZ
19395	528	3	about	about	RB
19395	528	4	50	50	CD
19395	528	5	light	light	NN
19395	528	6	-	-	HYPH
19395	528	7	years	year	NNS
19395	528	8	from	from	IN
19395	528	9	the	the	DT
19395	528	10	earth	earth	NN
19395	528	11	.	.	.
19395	529	1	Interferometer	interferometer	NN
19395	529	2	measures	measure	NNS
19395	529	3	,	,	,
19395	529	4	now	now	RB
19395	529	5	in	in	IN
19395	529	6	progress	progress	NN
19395	529	7	on	on	IN
19395	529	8	Mount	Mount	NNP
19395	529	9	Wilson	Wilson	NNP
19395	529	10	,	,	,
19395	529	11	indicate	indicate	VBP
19395	529	12	that	that	IN
19395	529	13	its	-PRON-	PRP$
19395	529	14	angular	angular	JJ
19395	529	15	diameter	diameter	NN
19395	529	16	is	be	VBZ
19395	529	17	about	about	RB
19395	529	18	0.020	0.020	CD
19395	529	19	of	of	IN
19395	529	20	a	a	DT
19395	529	21	second	second	NN
19395	529	22	.	.	.
19395	529	23	]	]	-RRB-
19395	530	1	While	while	IN
19395	530	2	the	the	DT
19395	530	3	theory	theory	NN
19395	530	4	of	of	IN
19395	530	5	dwarf	dwarf	NN
19395	530	6	and	and	CC
19395	530	7	giant	giant	JJ
19395	530	8	stars	star	NNS
19395	530	9	and	and	CC
19395	530	10	the	the	DT
19395	530	11	measurements	measurement	NNS
19395	530	12	just	just	RB
19395	530	13	described	describe	VBD
19395	530	14	afford	afford	VB
19395	530	15	no	no	DT
19395	530	16	direct	direct	JJ
19395	530	17	evidence	evidence	NN
19395	530	18	bearing	bear	VBG
19395	530	19	on	on	IN
19395	530	20	Laplace	Laplace	NNP
19395	530	21	's	's	POS
19395	530	22	explanation	explanation	NN
19395	530	23	of	of	IN
19395	530	24	the	the	DT
19395	530	25	formation	formation	NN
19395	530	26	of	of	IN
19395	530	27	planets	planet	NNS
19395	530	28	,	,	,
19395	530	29	they	-PRON-	PRP
19395	530	30	show	show	VBP
19395	530	31	that	that	IN
19395	530	32	stars	star	NNS
19395	530	33	exist	exist	VBP
19395	530	34	which	which	WDT
19395	530	35	are	be	VBP
19395	530	36	comparable	comparable	JJ
19395	530	37	in	in	IN
19395	530	38	diameter	diameter	NN
19395	530	39	with	with	IN
19395	530	40	our	-PRON-	PRP$
19395	530	41	solar	solar	JJ
19395	530	42	system	system	NN
19395	530	43	,	,	,
19395	530	44	and	and	CC
19395	530	45	suggest	suggest	VBP
19395	530	46	that	that	IN
19395	530	47	the	the	DT
19395	530	48	sun	sun	NN
19395	530	49	must	must	MD
19395	530	50	have	have	VB
19395	530	51	shrunk	shrink	VBN
19395	530	52	from	from	IN
19395	530	53	vast	vast	JJ
19395	530	54	dimensions	dimension	NNS
19395	530	55	.	.	.
19395	531	1	The	the	DT
19395	531	2	mode	mode	NN
19395	531	3	of	of	IN
19395	531	4	formation	formation	NN
19395	531	5	of	of	IN
19395	531	6	systems	system	NNS
19395	531	7	like	like	IN
19395	531	8	our	-PRON-	PRP$
19395	531	9	own	own	JJ
19395	531	10	,	,	,
19395	531	11	and	and	CC
19395	531	12	of	of	IN
19395	531	13	other	other	JJ
19395	531	14	systems	system	NNS
19395	531	15	numerously	numerously	RB
19395	531	16	illustrated	illustrate	VBN
19395	531	17	in	in	IN
19395	531	18	the	the	DT
19395	531	19	heavens	heavens	NNPS
19395	531	20	,	,	,
19395	531	21	is	be	VBZ
19395	531	22	one	one	CD
19395	531	23	of	of	IN
19395	531	24	the	the	DT
19395	531	25	most	most	RBS
19395	531	26	fascinating	fascinating	JJ
19395	531	27	problems	problem	NNS
19395	531	28	of	of	IN
19395	531	29	astronomy	astronomy	NN
19395	531	30	.	.	.
19395	532	1	Much	much	JJ
19395	532	2	light	light	NN
19395	532	3	has	have	VBZ
19395	532	4	been	be	VBN
19395	532	5	thrown	throw	VBN
19395	532	6	on	on	IN
19395	532	7	it	-PRON-	PRP
19395	532	8	by	by	IN
19395	532	9	recent	recent	JJ
19395	532	10	investigations	investigation	NNS
19395	532	11	,	,	,
19395	532	12	rendered	render	VBN
19395	532	13	possible	possible	JJ
19395	532	14	by	by	IN
19395	532	15	the	the	DT
19395	532	16	development	development	NN
19395	532	17	of	of	IN
19395	532	18	new	new	JJ
19395	532	19	and	and	CC
19395	532	20	powerful	powerful	JJ
19395	532	21	instruments	instrument	NNS
19395	532	22	and	and	CC
19395	532	23	by	by	IN
19395	532	24	advances	advance	NNS
19395	532	25	in	in	IN
19395	532	26	physics	physics	NN
19395	532	27	of	of	IN
19395	532	28	the	the	DT
19395	532	29	most	most	RBS
19395	532	30	fundamental	fundamental	JJ
19395	532	31	character	character	NN
19395	532	32	.	.	.
19395	533	1	All	all	PDT
19395	533	2	the	the	DT
19395	533	3	evidence	evidence	NN
19395	533	4	confirms	confirm	VBZ
19395	533	5	the	the	DT
19395	533	6	existence	existence	NN
19395	533	7	of	of	IN
19395	533	8	dwarf	dwarf	NN
19395	533	9	and	and	CC
19395	533	10	giant	giant	JJ
19395	533	11	stars	star	NNS
19395	533	12	,	,	,
19395	533	13	but	but	CC
19395	533	14	much	much	JJ
19395	533	15	work	work	NN
19395	533	16	must	must	MD
19395	533	17	be	be	VB
19395	533	18	done	do	VBN
19395	533	19	before	before	IN
19395	533	20	the	the	DT
19395	533	21	entire	entire	JJ
19395	533	22	course	course	NN
19395	533	23	of	of	IN
19395	533	24	stellar	stellar	JJ
19395	533	25	evolution	evolution	NN
19395	533	26	can	can	MD
19395	533	27	be	be	VB
19395	533	28	explained	explain	VBN
19395	533	29	.	.	.
19395	534	1	CHAPTER	chapter	NN
19395	534	2	III	iii	CD
19395	534	3	COSMIC	cosmic	NN
19395	534	4	CRUCIBLES	CRUCIBLES	NNPS
19395	534	5	"	"	''
19395	534	6	Shelter	Shelter	NNP
19395	534	7	during	during	IN
19395	534	8	Raids	Raids	NNP
19395	534	9	,	,	,
19395	534	10	"	"	''
19395	534	11	marking	mark	VBG
19395	534	12	the	the	DT
19395	534	13	entrance	entrance	NN
19395	534	14	to	to	IN
19395	534	15	underground	underground	JJ
19395	534	16	passages	passage	NNS
19395	534	17	,	,	,
19395	534	18	was	be	VBD
19395	534	19	a	a	DT
19395	534	20	sign	sign	NN
19395	534	21	of	of	IN
19395	534	22	common	common	JJ
19395	534	23	occurrence	occurrence	NN
19395	534	24	and	and	CC
19395	534	25	sinister	sinister	JJ
19395	534	26	suggestion	suggestion	NN
19395	534	27	throughout	throughout	IN
19395	534	28	London	London	NNP
19395	534	29	during	during	IN
19395	534	30	the	the	DT
19395	534	31	war	war	NN
19395	534	32	.	.	.
19395	535	1	With	with	IN
19395	535	2	characteristic	characteristic	JJ
19395	535	3	ingenuity	ingenuity	NN
19395	535	4	and	and	CC
19395	535	5	craftiness	craftiness	NN
19395	535	6	,	,	,
19395	535	7	ostensibly	ostensibly	RB
19395	535	8	for	for	IN
19395	535	9	purposes	purpose	NNS
19395	535	10	of	of	IN
19395	535	11	peace	peace	NN
19395	535	12	but	but	CC
19395	535	13	with	with	IN
19395	535	14	bomb	bomb	NN
19395	535	15	-	-	HYPH
19395	535	16	carrying	carry	VBG
19395	535	17	capacity	capacity	NN
19395	535	18	as	as	IN
19395	535	19	a	a	DT
19395	535	20	prime	prime	JJ
19395	535	21	specification	specification	NN
19395	535	22	,	,	,
19395	535	23	the	the	DT
19395	535	24	Zeppelin	Zeppelin	NNP
19395	535	25	had	have	VBD
19395	535	26	been	be	VBN
19395	535	27	developed	develop	VBN
19395	535	28	by	by	IN
19395	535	29	the	the	DT
19395	535	30	Germans	Germans	NNPS
19395	535	31	to	to	IN
19395	535	32	a	a	DT
19395	535	33	point	point	NN
19395	535	34	where	where	WRB
19395	535	35	it	-PRON-	PRP
19395	535	36	seriously	seriously	RB
19395	535	37	threatened	threaten	VBD
19395	535	38	both	both	CC
19395	535	39	London	London	NNP
19395	535	40	and	and	CC
19395	535	41	Paris	Paris	NNP
19395	535	42	.	.	.
19395	536	1	Searchlights	searchlight	NNS
19395	536	2	,	,	,
19395	536	3	range	range	NN
19395	536	4	-	-	HYPH
19395	536	5	finders	finder	NNS
19395	536	6	,	,	,
19395	536	7	and	and	CC
19395	536	8	anti	anti	JJ
19395	536	9	-	-	JJ
19395	536	10	aircraft	aircraft	JJ
19395	536	11	guns	gun	NNS
19395	536	12	,	,	,
19395	536	13	surpassed	surpass	VBN
19395	536	14	by	by	IN
19395	536	15	the	the	DT
19395	536	16	daring	dare	VBG
19395	536	17	ventures	venture	NNS
19395	536	18	of	of	IN
19395	536	19	British	british	JJ
19395	536	20	and	and	CC
19395	536	21	French	french	JJ
19395	536	22	airmen	airman	NNS
19395	536	23	,	,	,
19395	536	24	would	would	MD
19395	536	25	have	have	VB
19395	536	26	served	serve	VBN
19395	536	27	but	but	CC
19395	536	28	little	little	JJ
19395	536	29	against	against	IN
19395	536	30	the	the	DT
19395	536	31	night	night	NN
19395	536	32	invader	invader	NN
19395	536	33	except	except	IN
19395	536	34	for	for	IN
19395	536	35	its	-PRON-	PRP$
19395	536	36	one	one	CD
19395	536	37	fatal	fatal	JJ
19395	536	38	defect	defect	NN
19395	536	39	--	--	:
19395	536	40	the	the	DT
19395	536	41	inflammable	inflammable	JJ
19395	536	42	nature	nature	NN
19395	536	43	of	of	IN
19395	536	44	the	the	DT
19395	536	45	hydrogen	hydrogen	NN
19395	536	46	gas	gas	NN
19395	536	47	that	that	WDT
19395	536	48	kept	keep	VBD
19395	536	49	it	-PRON-	PRP
19395	536	50	aloft	aloft	RB
19395	536	51	.	.	.
19395	537	1	A	a	DT
19395	537	2	single	single	JJ
19395	537	3	explosive	explosive	JJ
19395	537	4	bullet	bullet	NN
19395	537	5	served	serve	VBD
19395	537	6	to	to	TO
19395	537	7	transform	transform	VB
19395	537	8	a	a	DT
19395	537	9	Zeppelin	Zeppelin	NNP
19395	537	10	into	into	IN
19395	537	11	a	a	DT
19395	537	12	heap	heap	NN
19395	537	13	of	of	IN
19395	537	14	scorched	scorched	JJ
19395	537	15	and	and	CC
19395	537	16	twisted	twisted	JJ
19395	537	17	metal	metal	NN
19395	537	18	.	.	.
19395	538	1	This	this	DT
19395	538	2	characteristic	characteristic	NN
19395	538	3	of	of	IN
19395	538	4	hydrogen	hydrogen	NN
19395	538	5	caused	cause	VBD
19395	538	6	the	the	DT
19395	538	7	failure	failure	NN
19395	538	8	of	of	IN
19395	538	9	the	the	DT
19395	538	10	Zeppelin	Zeppelin	NNP
19395	538	11	raids	raid	NNS
19395	538	12	.	.	.
19395	539	1	Had	have	VBD
19395	539	2	the	the	DT
19395	539	3	war	war	NN
19395	539	4	lasted	last	VBD
19395	539	5	a	a	DT
19395	539	6	few	few	JJ
19395	539	7	months	month	NNS
19395	539	8	longer	long	RBR
19395	539	9	,	,	,
19395	539	10	however	however	RB
19395	539	11	,	,	,
19395	539	12	the	the	DT
19395	539	13	work	work	NN
19395	539	14	of	of	IN
19395	539	15	American	american	JJ
19395	539	16	scientists	scientist	NNS
19395	539	17	would	would	MD
19395	539	18	have	have	VB
19395	539	19	made	make	VBN
19395	539	20	our	-PRON-	PRP$
19395	539	21	counter	counter	NN
19395	539	22	-	-	NN
19395	539	23	attack	attack	NN
19395	539	24	in	in	IN
19395	539	25	the	the	DT
19395	539	26	air	air	NN
19395	539	27	a	a	DT
19395	539	28	formidable	formidable	JJ
19395	539	29	one	one	NN
19395	539	30	.	.	.
19395	540	1	At	at	IN
19395	540	2	the	the	DT
19395	540	3	signing	signing	NN
19395	540	4	of	of	IN
19395	540	5	the	the	DT
19395	540	6	armistice	armistice	NN
19395	540	7	hundreds	hundred	NNS
19395	540	8	of	of	IN
19395	540	9	cylinders	cylinder	NNS
19395	540	10	of	of	IN
19395	540	11	compressed	compress	VBN
19395	540	12	helium	helium	NN
19395	540	13	lay	lie	VBD
19395	540	14	at	at	IN
19395	540	15	the	the	DT
19395	540	16	docks	dock	NNS
19395	540	17	ready	ready	JJ
19395	540	18	for	for	IN
19395	540	19	shipment	shipment	NN
19395	540	20	abroad	abroad	RB
19395	540	21	.	.	.
19395	541	1	Extracted	extract	VBN
19395	541	2	from	from	IN
19395	541	3	the	the	DT
19395	541	4	natural	natural	JJ
19395	541	5	gas	gas	NN
19395	541	6	of	of	IN
19395	541	7	Texas	Texas	NNP
19395	541	8	wells	well	NNS
19395	541	9	by	by	IN
19395	541	10	new	new	JJ
19395	541	11	and	and	CC
19395	541	12	ingenious	ingenious	JJ
19395	541	13	processes	process	NNS
19395	541	14	,	,	,
19395	541	15	this	this	DT
19395	541	16	substitute	substitute	NN
19395	541	17	for	for	IN
19395	541	18	hydrogen	hydrogen	NN
19395	541	19	,	,	,
19395	541	20	almost	almost	RB
19395	541	21	as	as	IN
19395	541	22	light	light	JJ
19395	541	23	and	and	CC
19395	541	24	absolutely	absolutely	RB
19395	541	25	uninflammable	uninflammable	JJ
19395	541	26	,	,	,
19395	541	27	produced	produce	VBN
19395	541	28	in	in	IN
19395	541	29	quantities	quantity	NNS
19395	541	30	of	of	IN
19395	541	31	millions	million	NNS
19395	541	32	of	of	IN
19395	541	33	cubic	cubic	JJ
19395	541	34	feet	foot	NNS
19395	541	35	,	,	,
19395	541	36	would	would	MD
19395	541	37	have	have	VB
19395	541	38	made	make	VBN
19395	541	39	the	the	DT
19395	541	40	dirigibles	dirigible	NNS
19395	541	41	of	of	IN
19395	541	42	the	the	DT
19395	541	43	Allies	Allies	NNPS
19395	541	44	masters	master	NNS
19395	541	45	of	of	IN
19395	541	46	the	the	DT
19395	541	47	air	air	NN
19395	541	48	.	.	.
19395	542	1	The	the	DT
19395	542	2	special	special	JJ
19395	542	3	properties	property	NNS
19395	542	4	of	of	IN
19395	542	5	this	this	DT
19395	542	6	remarkable	remarkable	JJ
19395	542	7	gas	gas	NN
19395	542	8	,	,	,
19395	542	9	previously	previously	RB
19395	542	10	obtainable	obtainable	JJ
19395	542	11	only	only	RB
19395	542	12	in	in	IN
19395	542	13	minute	minute	NN
19395	542	14	quantities	quantity	NNS
19395	542	15	,	,	,
19395	542	16	would	would	MD
19395	542	17	have	have	VB
19395	542	18	sufficed	suffice	VBN
19395	542	19	to	to	TO
19395	542	20	reverse	reverse	VB
19395	542	21	the	the	DT
19395	542	22	situation	situation	NN
19395	542	23	.	.	.
19395	543	1	SOLAR	SOLAR	NNP
19395	543	2	HELIUM	HELIUM	NNP
19395	543	3	Helium	Helium	NNP
19395	543	4	,	,	,
19395	543	5	as	as	IN
19395	543	6	its	-PRON-	PRP$
19395	543	7	name	name	NN
19395	543	8	implies	imply	VBZ
19395	543	9	,	,	,
19395	543	10	is	be	VBZ
19395	543	11	of	of	IN
19395	543	12	solar	solar	JJ
19395	543	13	origin	origin	NN
19395	543	14	.	.	.
19395	544	1	In	in	IN
19395	544	2	1868	1868	CD
19395	544	3	,	,	,
19395	544	4	when	when	WRB
19395	544	5	Lockyer	Lockyer	NNP
19395	544	6	first	first	RB
19395	544	7	directed	direct	VBD
19395	544	8	his	-PRON-	PRP$
19395	544	9	spectroscope	spectroscope	NN
19395	544	10	to	to	IN
19395	544	11	the	the	DT
19395	544	12	great	great	JJ
19395	544	13	flames	flame	NNS
19395	544	14	or	or	CC
19395	544	15	prominences	prominence	NNS
19395	544	16	that	that	WDT
19395	544	17	rise	rise	VBP
19395	544	18	thousands	thousand	NNS
19395	544	19	of	of	IN
19395	544	20	miles	mile	NNS
19395	544	21	,	,	,
19395	544	22	sometimes	sometimes	RB
19395	544	23	hundreds	hundred	NNS
19395	544	24	of	of	IN
19395	544	25	thousands	thousand	NNS
19395	544	26	,	,	,
19395	544	27	above	above	IN
19395	544	28	the	the	DT
19395	544	29	surface	surface	NN
19395	544	30	of	of	IN
19395	544	31	the	the	DT
19395	544	32	sun	sun	NN
19395	544	33	,	,	,
19395	544	34	he	-PRON-	PRP
19395	544	35	instantly	instantly	RB
19395	544	36	identified	identify	VBD
19395	544	37	the	the	DT
19395	544	38	characteristic	characteristic	JJ
19395	544	39	red	red	JJ
19395	544	40	and	and	CC
19395	544	41	blue	blue	JJ
19395	544	42	radiations	radiation	NNS
19395	544	43	of	of	IN
19395	544	44	hydrogen	hydrogen	NN
19395	544	45	.	.	.
19395	545	1	In	in	IN
19395	545	2	the	the	DT
19395	545	3	yellow	yellow	JJ
19395	545	4	,	,	,
19395	545	5	close	close	JJ
19395	545	6	to	to	IN
19395	545	7	the	the	DT
19395	545	8	position	position	NN
19395	545	9	of	of	IN
19395	545	10	the	the	DT
19395	545	11	well	well	RB
19395	545	12	-	-	HYPH
19395	545	13	known	know	VBN
19395	545	14	double	double	JJ
19395	545	15	line	line	NN
19395	545	16	of	of	IN
19395	545	17	sodium	sodium	NN
19395	545	18	,	,	,
19395	545	19	but	but	CC
19395	545	20	not	not	RB
19395	545	21	quite	quite	RB
19395	545	22	coincident	coincident	JJ
19395	545	23	with	with	IN
19395	545	24	it	-PRON-	PRP
19395	545	25	,	,	,
19395	545	26	he	-PRON-	PRP
19395	545	27	detected	detect	VBD
19395	545	28	a	a	DT
19395	545	29	new	new	JJ
19395	545	30	line	line	NN
19395	545	31	,	,	,
19395	545	32	of	of	IN
19395	545	33	great	great	JJ
19395	545	34	brilliancy	brilliancy	NN
19395	545	35	,	,	,
19395	545	36	extending	extend	VBG
19395	545	37	to	to	IN
19395	545	38	the	the	DT
19395	545	39	highest	high	JJS
19395	545	40	levels	level	NNS
19395	545	41	.	.	.
19395	546	1	Its	-PRON-	PRP$
19395	546	2	similarity	similarity	NN
19395	546	3	in	in	IN
19395	546	4	this	this	DT
19395	546	5	respect	respect	NN
19395	546	6	with	with	IN
19395	546	7	the	the	DT
19395	546	8	lines	line	NNS
19395	546	9	of	of	IN
19395	546	10	hydrogen	hydrogen	NNP
19395	546	11	led	lead	VBD
19395	546	12	him	-PRON-	PRP
19395	546	13	to	to	TO
19395	546	14	recognize	recognize	VB
19395	546	15	the	the	DT
19395	546	16	existence	existence	NN
19395	546	17	of	of	IN
19395	546	18	a	a	DT
19395	546	19	new	new	JJ
19395	546	20	and	and	CC
19395	546	21	very	very	RB
19395	546	22	light	light	JJ
19395	546	23	gas	gas	NN
19395	546	24	,	,	,
19395	546	25	unknown	unknown	JJ
19395	546	26	to	to	IN
19395	546	27	terrestrial	terrestrial	JJ
19395	546	28	chemistry	chemistry	NN
19395	546	29	.	.	.
19395	547	1	Many	many	JJ
19395	547	2	years	year	NNS
19395	547	3	passed	pass	VBD
19395	547	4	before	before	IN
19395	547	5	any	any	DT
19395	547	6	chemical	chemical	JJ
19395	547	7	laboratory	laboratory	NN
19395	547	8	on	on	IN
19395	547	9	earth	earth	NN
19395	547	10	was	be	VBD
19395	547	11	able	able	JJ
19395	547	12	to	to	TO
19395	547	13	match	match	VB
19395	547	14	this	this	DT
19395	547	15	product	product	NN
19395	547	16	of	of	IN
19395	547	17	the	the	DT
19395	547	18	great	great	JJ
19395	547	19	laboratory	laboratory	NN
19395	547	20	of	of	IN
19395	547	21	the	the	DT
19395	547	22	sun	sun	NN
19395	547	23	.	.	.
19395	548	1	In	in	IN
19395	548	2	1896	1896	CD
19395	548	3	Ramsay	Ramsay	NNP
19395	548	4	at	at	IN
19395	548	5	last	last	JJ
19395	548	6	succeeded	succeed	VBN
19395	548	7	in	in	IN
19395	548	8	separating	separate	VBG
19395	548	9	helium	helium	NN
19395	548	10	,	,	,
19395	548	11	recognized	recognize	VBN
19395	548	12	by	by	IN
19395	548	13	the	the	DT
19395	548	14	same	same	JJ
19395	548	15	yellow	yellow	JJ
19395	548	16	line	line	NN
19395	548	17	in	in	IN
19395	548	18	its	-PRON-	PRP$
19395	548	19	spectrum	spectrum	NN
19395	548	20	,	,	,
19395	548	21	in	in	IN
19395	548	22	minute	minute	NN
19395	548	23	quantities	quantity	NNS
19395	548	24	from	from	IN
19395	548	25	the	the	DT
19395	548	26	mineral	mineral	NN
19395	548	27	uraninite	uraninite	NNP
19395	548	28	.	.	.
19395	549	1	Once	once	RB
19395	549	2	available	available	JJ
19395	549	3	for	for	IN
19395	549	4	study	study	NN
19395	549	5	under	under	IN
19395	549	6	electrical	electrical	JJ
19395	549	7	excitation	excitation	NN
19395	549	8	in	in	IN
19395	549	9	vacuum	vacuum	NN
19395	549	10	tubes	tube	NNS
19395	549	11	,	,	,
19395	549	12	helium	helium	NN
19395	549	13	was	be	VBD
19395	549	14	found	find	VBN
19395	549	15	to	to	TO
19395	549	16	have	have	VB
19395	549	17	many	many	JJ
19395	549	18	other	other	JJ
19395	549	19	lines	line	NNS
19395	549	20	in	in	IN
19395	549	21	its	-PRON-	PRP$
19395	549	22	spectrum	spectrum	NN
19395	549	23	,	,	,
19395	549	24	which	which	WDT
19395	549	25	have	have	VBP
19395	549	26	been	be	VBN
19395	549	27	identified	identify	VBN
19395	549	28	in	in	IN
19395	549	29	the	the	DT
19395	549	30	spectra	spectra	NN
19395	549	31	of	of	IN
19395	549	32	solar	solar	JJ
19395	549	33	prominences	prominence	NNS
19395	549	34	,	,	,
19395	549	35	gaseous	gaseous	JJ
19395	549	36	nebulæ	nebulæ	NN
19395	549	37	,	,	,
19395	549	38	and	and	CC
19395	549	39	hot	hot	JJ
19395	549	40	stars	star	NNS
19395	549	41	.	.	.
19395	550	1	Indeed	indeed	RB
19395	550	2	,	,	,
19395	550	3	there	there	EX
19395	550	4	is	be	VBZ
19395	550	5	a	a	DT
19395	550	6	stellar	stellar	JJ
19395	550	7	class	class	NN
19395	550	8	known	know	VBN
19395	550	9	as	as	IN
19395	550	10	helium	helium	NN
19395	550	11	stars	star	NNS
19395	550	12	,	,	,
19395	550	13	because	because	IN
19395	550	14	of	of	IN
19395	550	15	the	the	DT
19395	550	16	dominance	dominance	NN
19395	550	17	of	of	IN
19395	550	18	this	this	DT
19395	550	19	gas	gas	NN
19395	550	20	in	in	IN
19395	550	21	their	-PRON-	PRP$
19395	550	22	atmospheres	atmosphere	NNS
19395	550	23	.	.	.
19395	551	1	[	[	-LRB-
19395	551	2	Illustration	illustration	NN
19395	551	3	:	:	:
19395	551	4	Fig	Fig	NNP
19395	551	5	.	.	.
19395	552	1	30	30	CD
19395	552	2	.	.	.
19395	553	1	Solar	solar	JJ
19395	553	2	prominences	prominence	NNS
19395	553	3	,	,	,
19395	553	4	photographed	photograph	VBN
19395	553	5	with	with	IN
19395	553	6	the	the	DT
19395	553	7	spectroheliograph	spectroheliograph	NN
19395	553	8	without	without	IN
19395	553	9	an	an	DT
19395	553	10	eclipse	eclipse	NN
19395	553	11	(	(	-LRB-
19395	553	12	Ellerman	Ellerman	NNP
19395	553	13	)	)	-RRB-
19395	553	14	.	.	.
19395	554	1	In	in	IN
19395	554	2	these	these	DT
19395	554	3	luminous	luminous	JJ
19395	554	4	gaseous	gaseous	JJ
19395	554	5	clouds	cloud	NNS
19395	554	6	,	,	,
19395	554	7	which	which	WDT
19395	554	8	sometimes	sometimes	RB
19395	554	9	rise	rise	VBP
19395	554	10	to	to	IN
19395	554	11	elevations	elevation	NNS
19395	554	12	exceeding	exceed	VBG
19395	554	13	half	half	PDT
19395	554	14	the	the	DT
19395	554	15	sun	sun	NN
19395	554	16	's	's	POS
19395	554	17	diameter	diameter	NN
19395	554	18	,	,	,
19395	554	19	the	the	DT
19395	554	20	new	new	JJ
19395	554	21	gas	gas	NN
19395	554	22	helium	helium	NN
19395	554	23	was	be	VBD
19395	554	24	discovered	discover	VBN
19395	554	25	by	by	IN
19395	554	26	Lockyer	Lockyer	NNP
19395	554	27	in	in	IN
19395	554	28	1868	1868	CD
19395	554	29	.	.	.
19395	555	1	Helium	helium	NN
19395	555	2	was	be	VBD
19395	555	3	not	not	RB
19395	555	4	found	find	VBN
19395	555	5	on	on	IN
19395	555	6	the	the	DT
19395	555	7	earth	earth	NN
19395	555	8	until	until	IN
19395	555	9	1896	1896	CD
19395	555	10	.	.	.
19395	556	1	Since	since	IN
19395	556	2	then	then	RB
19395	556	3	it	-PRON-	PRP
19395	556	4	has	have	VBZ
19395	556	5	been	be	VBN
19395	556	6	shown	show	VBN
19395	556	7	to	to	TO
19395	556	8	be	be	VB
19395	556	9	a	a	DT
19395	556	10	prominent	prominent	JJ
19395	556	11	constituent	constituent	NN
19395	556	12	of	of	IN
19395	556	13	nebulæ	nebulæ	JJ
19395	556	14	and	and	CC
19395	556	15	hot	hot	JJ
19395	556	16	stars	star	NNS
19395	556	17	.	.	.
19395	556	18	]	]	-RRB-
19395	557	1	The	the	DT
19395	557	2	chief	chief	JJ
19395	557	3	importance	importance	NN
19395	557	4	of	of	IN
19395	557	5	helium	helium	NN
19395	557	6	lies	lie	VBZ
19395	557	7	in	in	IN
19395	557	8	the	the	DT
19395	557	9	clue	clue	NN
19395	557	10	it	-PRON-	PRP
19395	557	11	has	have	VBZ
19395	557	12	afforded	afford	VBN
19395	557	13	to	to	IN
19395	557	14	the	the	DT
19395	557	15	constitution	constitution	NN
19395	557	16	of	of	IN
19395	557	17	matter	matter	NN
19395	557	18	and	and	CC
19395	557	19	the	the	DT
19395	557	20	transmutation	transmutation	NN
19395	557	21	of	of	IN
19395	557	22	the	the	DT
19395	557	23	elements	element	NNS
19395	557	24	.	.	.
19395	558	1	Radium	Radium	NNP
19395	558	2	and	and	CC
19395	558	3	other	other	JJ
19395	558	4	radioactive	radioactive	JJ
19395	558	5	substances	substance	NNS
19395	558	6	,	,	,
19395	558	7	such	such	JJ
19395	558	8	as	as	IN
19395	558	9	uranium	uranium	NN
19395	558	10	,	,	,
19395	558	11	spontaneously	spontaneously	RB
19395	558	12	emit	emit	VB
19395	558	13	negatively	negatively	RB
19395	558	14	charged	charge	VBN
19395	558	15	particles	particle	NNS
19395	558	16	of	of	IN
19395	558	17	extremely	extremely	RB
19395	558	18	small	small	JJ
19395	558	19	mass	mass	NN
19395	558	20	(	(	-LRB-
19395	558	21	electrons	electron	NNS
19395	558	22	)	)	-RRB-
19395	558	23	,	,	,
19395	558	24	and	and	CC
19395	558	25	also	also	RB
19395	558	26	positively	positively	RB
19395	558	27	charged	charge	VBN
19395	558	28	particles	particle	NNS
19395	558	29	of	of	IN
19395	558	30	much	much	RB
19395	558	31	greater	great	JJR
19395	558	32	mass	mass	NN
19395	558	33	,	,	,
19395	558	34	known	know	VBN
19395	558	35	as	as	IN
19395	558	36	alpha	alpha	NN
19395	558	37	particles	particle	NNS
19395	558	38	.	.	.
19395	559	1	Rutherford	Rutherford	NNP
19395	559	2	and	and	CC
19395	559	3	Geiger	Geiger	NNP
19395	559	4	actually	actually	RB
19395	559	5	succeeded	succeed	VBD
19395	559	6	in	in	IN
19395	559	7	counting	count	VBG
19395	559	8	the	the	DT
19395	559	9	number	number	NN
19395	559	10	of	of	IN
19395	559	11	alpha	alpha	NN
19395	559	12	particles	particle	NNS
19395	559	13	emitted	emit	VBN
19395	559	14	per	per	IN
19395	559	15	second	second	NN
19395	559	16	by	by	IN
19395	559	17	a	a	DT
19395	559	18	known	know	VBN
19395	559	19	mass	mass	NN
19395	559	20	of	of	IN
19395	559	21	radium	radium	NN
19395	559	22	,	,	,
19395	559	23	and	and	CC
19395	559	24	showed	show	VBD
19395	559	25	that	that	IN
19395	559	26	these	these	DT
19395	559	27	were	be	VBD
19395	559	28	charged	charge	VBN
19395	559	29	helium	helium	NN
19395	559	30	atoms	atom	NNS
19395	559	31	.	.	.
19395	560	1	To	to	TO
19395	560	2	discuss	discuss	VB
19395	560	3	more	more	JJR
19395	560	4	at	at	IN
19395	560	5	length	length	NN
19395	560	6	the	the	DT
19395	560	7	extraordinary	extraordinary	JJ
19395	560	8	characteristics	characteristic	NNS
19395	560	9	of	of	IN
19395	560	10	helium	helium	NN
19395	560	11	,	,	,
19395	560	12	which	which	WDT
19395	560	13	plays	play	VBZ
19395	560	14	so	so	RB
19395	560	15	large	large	VBP
19395	560	16	a	a	DT
19395	560	17	part	part	NN
19395	560	18	in	in	IN
19395	560	19	celestial	celestial	JJ
19395	560	20	affairs	affair	NNS
19395	560	21	,	,	,
19395	560	22	would	would	MD
19395	560	23	take	take	VB
19395	560	24	us	-PRON-	PRP
19395	560	25	too	too	RB
19395	560	26	far	far	RB
19395	560	27	afield	afield	JJ
19395	560	28	.	.	.
19395	561	1	Let	let	VB
19395	561	2	us	-PRON-	PRP
19395	561	3	therefore	therefore	RB
19395	561	4	pass	pass	VB
19395	561	5	to	to	IN
19395	561	6	another	another	DT
19395	561	7	case	case	NN
19395	561	8	in	in	IN
19395	561	9	which	which	WDT
19395	561	10	a	a	DT
19395	561	11	fundamental	fundamental	JJ
19395	561	12	discovery	discovery	NN
19395	561	13	,	,	,
19395	561	14	this	this	DT
19395	561	15	time	time	NN
19395	561	16	in	in	IN
19395	561	17	physics	physics	NN
19395	561	18	,	,	,
19395	561	19	was	be	VBD
19395	561	20	first	first	RB
19395	561	21	foreshadowed	foreshadow	VBN
19395	561	22	by	by	IN
19395	561	23	astronomical	astronomical	JJ
19395	561	24	observation	observation	NN
19395	561	25	.	.	.
19395	562	1	SUN	SUN	NNP
19395	562	2	-	-	HYPH
19395	562	3	SPOTS	SPOTS	NNP
19395	562	4	AS	as	IN
19395	562	5	MAGNETS	magnets	NN
19395	562	6	No	no	DT
19395	562	7	archæologist	archæologist	NN
19395	562	8	,	,	,
19395	562	9	whether	whether	IN
19395	562	10	Young	Young	NNP
19395	562	11	or	or	CC
19395	562	12	Champollion	Champollion	NNP
19395	562	13	deciphering	decipher	VBG
19395	562	14	the	the	DT
19395	562	15	Rosetta	Rosetta	NNP
19395	562	16	Stone	Stone	NNP
19395	562	17	,	,	,
19395	562	18	or	or	CC
19395	562	19	Rawlinson	Rawlinson	NNP
19395	562	20	copying	copy	VBG
19395	562	21	the	the	DT
19395	562	22	cuneiform	cuneiform	NN
19395	562	23	inscription	inscription	NN
19395	562	24	on	on	IN
19395	562	25	the	the	DT
19395	562	26	cliff	cliff	NN
19395	562	27	of	of	IN
19395	562	28	Behistun	Behistun	NNP
19395	562	29	,	,	,
19395	562	30	was	be	VBD
19395	562	31	ever	ever	RB
19395	562	32	faced	face	VBN
19395	562	33	by	by	IN
19395	562	34	a	a	DT
19395	562	35	more	more	RBR
19395	562	36	fascinating	fascinating	JJ
19395	562	37	problem	problem	NN
19395	562	38	than	than	IN
19395	562	39	that	that	DT
19395	562	40	which	which	WDT
19395	562	41	confronts	confront	VBZ
19395	562	42	the	the	DT
19395	562	43	solar	solar	JJ
19395	562	44	physicist	physicist	NN
19395	562	45	engaged	engage	VBN
19395	562	46	in	in	IN
19395	562	47	the	the	DT
19395	562	48	interpretation	interpretation	NN
19395	562	49	of	of	IN
19395	562	50	the	the	DT
19395	562	51	hieroglyphic	hieroglyphic	JJ
19395	562	52	lines	line	NNS
19395	562	53	of	of	IN
19395	562	54	sun	sun	NN
19395	562	55	-	-	HYPH
19395	562	56	spot	spot	NN
19395	562	57	spectra	spectra	NNP
19395	562	58	.	.	.
19395	563	1	The	the	DT
19395	563	2	colossal	colossal	JJ
19395	563	3	whirling	whirl	VBG
19395	563	4	storms	storm	NNS
19395	563	5	that	that	WDT
19395	563	6	constitute	constitute	VBP
19395	563	7	sun	sun	NN
19395	563	8	-	-	HYPH
19395	563	9	spots	spot	NNS
19395	563	10	,	,	,
19395	563	11	so	so	CC
19395	563	12	vast	vast	JJ
19395	563	13	that	that	IN
19395	563	14	the	the	DT
19395	563	15	earth	earth	NN
19395	563	16	would	would	MD
19395	563	17	make	make	VB
19395	563	18	but	but	CC
19395	563	19	a	a	DT
19395	563	20	moment	moment	NN
19395	563	21	's	's	POS
19395	563	22	scant	scant	JJ
19395	563	23	mouthful	mouthful	NN
19395	563	24	for	for	IN
19395	563	25	them	-PRON-	PRP
19395	563	26	,	,	,
19395	563	27	differ	differ	VBP
19395	563	28	materially	materially	RB
19395	563	29	from	from	IN
19395	563	30	the	the	DT
19395	563	31	general	general	JJ
19395	563	32	light	light	NN
19395	563	33	of	of	IN
19395	563	34	the	the	DT
19395	563	35	sun	sun	NN
19395	563	36	when	when	WRB
19395	563	37	examined	examine	VBN
19395	563	38	with	with	IN
19395	563	39	the	the	DT
19395	563	40	spectroscope	spectroscope	NN
19395	563	41	.	.	.
19395	564	1	Observing	observe	VBG
19395	564	2	them	-PRON-	PRP
19395	564	3	visually	visually	RB
19395	564	4	many	many	JJ
19395	564	5	years	year	NNS
19395	564	6	ago	ago	RB
19395	564	7	,	,	,
19395	564	8	the	the	DT
19395	564	9	late	late	JJ
19395	564	10	Professor	Professor	NNP
19395	564	11	Young	Young	NNP
19395	564	12	,	,	,
19395	564	13	of	of	IN
19395	564	14	Princeton	Princeton	NNP
19395	564	15	,	,	,
19395	564	16	found	find	VBN
19395	564	17	among	among	IN
19395	564	18	their	-PRON-	PRP$
19395	564	19	complex	complex	JJ
19395	564	20	features	feature	VBZ
19395	564	21	a	a	DT
19395	564	22	number	number	NN
19395	564	23	of	of	IN
19395	564	24	double	double	JJ
19395	564	25	lines	line	NNS
19395	564	26	which	which	WDT
19395	564	27	he	-PRON-	PRP
19395	564	28	naturally	naturally	RB
19395	564	29	attributed	attribute	VBD
19395	564	30	,	,	,
19395	564	31	in	in	IN
19395	564	32	harmony	harmony	NN
19395	564	33	with	with	IN
19395	564	34	the	the	DT
19395	564	35	physical	physical	JJ
19395	564	36	knowledge	knowledge	NN
19395	564	37	of	of	IN
19395	564	38	the	the	DT
19395	564	39	time	time	NN
19395	564	40	,	,	,
19395	564	41	to	to	IN
19395	564	42	the	the	DT
19395	564	43	effect	effect	NN
19395	564	44	of	of	IN
19395	564	45	"	"	``
19395	564	46	reversal	reversal	NN
19395	564	47	"	"	''
19395	564	48	by	by	IN
19395	564	49	superposed	superpose	VBN
19395	564	50	layers	layer	NNS
19395	564	51	of	of	IN
19395	564	52	vapors	vapor	NNS
19395	564	53	of	of	IN
19395	564	54	different	different	JJ
19395	564	55	density	density	NN
19395	564	56	and	and	CC
19395	564	57	temperature	temperature	NN
19395	564	58	.	.	.
19395	565	1	What	what	WP
19395	565	2	he	-PRON-	PRP
19395	565	3	actually	actually	RB
19395	565	4	saw	see	VBD
19395	565	5	,	,	,
19395	565	6	however	however	RB
19395	565	7	,	,	,
19395	565	8	as	as	IN
19395	565	9	was	be	VBD
19395	565	10	proved	prove	VBN
19395	565	11	at	at	IN
19395	565	12	the	the	DT
19395	565	13	Mount	Mount	NNP
19395	565	14	Wilson	Wilson	NNP
19395	565	15	Observatory	Observatory	NNP
19395	565	16	in	in	IN
19395	565	17	1908	1908	CD
19395	565	18	,	,	,
19395	565	19	was	be	VBD
19395	565	20	the	the	DT
19395	565	21	effect	effect	NN
19395	565	22	of	of	IN
19395	565	23	a	a	DT
19395	565	24	powerful	powerful	JJ
19395	565	25	magnetic	magnetic	JJ
19395	565	26	field	field	NN
19395	565	27	on	on	IN
19395	565	28	radiation	radiation	NN
19395	565	29	,	,	,
19395	565	30	now	now	RB
19395	565	31	known	know	VBN
19395	565	32	as	as	IN
19395	565	33	the	the	DT
19395	565	34	Zeeman	Zeeman	NNP
19395	565	35	effect	effect	NN
19395	565	36	.	.	.
19395	566	1	[	[	-LRB-
19395	566	2	Illustration	illustration	NN
19395	566	3	:	:	:
19395	566	4	Fig	Fig	NNP
19395	566	5	.	.	.
19395	567	1	31	31	CD
19395	567	2	.	.	.
19395	568	1	The	the	DT
19395	568	2	150-foot	150-foot	CD
19395	568	3	tower	tower	NN
19395	568	4	telescope	telescope	NN
19395	568	5	of	of	IN
19395	568	6	the	the	DT
19395	568	7	Mount	Mount	NNP
19395	568	8	Wilson	Wilson	NNP
19395	568	9	Observatory	Observatory	NNP
19395	568	10	.	.	.
19395	569	1	An	an	DT
19395	569	2	image	image	NN
19395	569	3	of	of	IN
19395	569	4	the	the	DT
19395	569	5	sun	sun	NN
19395	569	6	about	about	RB
19395	569	7	16	16	CD
19395	569	8	inches	inch	NNS
19395	569	9	in	in	IN
19395	569	10	diameter	diameter	NN
19395	569	11	is	be	VBZ
19395	569	12	formed	form	VBN
19395	569	13	in	in	IN
19395	569	14	the	the	DT
19395	569	15	laboratory	laboratory	NN
19395	569	16	at	at	IN
19395	569	17	the	the	DT
19395	569	18	base	base	NN
19395	569	19	of	of	IN
19395	569	20	the	the	DT
19395	569	21	tower	tower	NN
19395	569	22	.	.	.
19395	570	1	Below	below	IN
19395	570	2	this	this	DT
19395	570	3	,	,	,
19395	570	4	in	in	IN
19395	570	5	a	a	DT
19395	570	6	well	well	RB
19395	570	7	extending	extend	VBG
19395	570	8	80	80	CD
19395	570	9	feet	foot	NNS
19395	570	10	into	into	IN
19395	570	11	the	the	DT
19395	570	12	earth	earth	NN
19395	570	13	,	,	,
19395	570	14	is	be	VBZ
19395	570	15	the	the	DT
19395	570	16	powerful	powerful	JJ
19395	570	17	spectroscope	spectroscope	NN
19395	570	18	with	with	IN
19395	570	19	which	which	WDT
19395	570	20	the	the	DT
19395	570	21	magnetic	magnetic	JJ
19395	570	22	fields	field	NNS
19395	570	23	in	in	IN
19395	570	24	sun	sun	NN
19395	570	25	-	-	HYPH
19395	570	26	spots	spot	NNS
19395	570	27	and	and	CC
19395	570	28	the	the	DT
19395	570	29	general	general	JJ
19395	570	30	magnetic	magnetic	JJ
19395	570	31	field	field	NN
19395	570	32	of	of	IN
19395	570	33	the	the	DT
19395	570	34	sun	sun	NN
19395	570	35	are	be	VBP
19395	570	36	studied	study	VBN
19395	570	37	.	.	.
19395	570	38	]	]	-RRB-
19395	571	1	Faraday	Faraday	NNP
19395	571	2	was	be	VBD
19395	571	3	the	the	DT
19395	571	4	first	first	JJ
19395	571	5	to	to	TO
19395	571	6	detect	detect	VB
19395	571	7	the	the	DT
19395	571	8	influence	influence	NN
19395	571	9	of	of	IN
19395	571	10	magnetism	magnetism	NN
19395	571	11	on	on	IN
19395	571	12	light	light	NN
19395	571	13	.	.	.
19395	572	1	Between	between	IN
19395	572	2	the	the	DT
19395	572	3	poles	pole	NNS
19395	572	4	of	of	IN
19395	572	5	a	a	DT
19395	572	6	large	large	JJ
19395	572	7	electromagnet	electromagnet	NN
19395	572	8	,	,	,
19395	572	9	powerful	powerful	JJ
19395	572	10	for	for	IN
19395	572	11	those	those	DT
19395	572	12	days	day	NNS
19395	572	13	(	(	-LRB-
19395	572	14	1845	1845	CD
19395	572	15	)	)	-RRB-
19395	572	16	,	,	,
19395	572	17	he	-PRON-	PRP
19395	572	18	placed	place	VBD
19395	572	19	a	a	DT
19395	572	20	block	block	NN
19395	572	21	of	of	IN
19395	572	22	very	very	RB
19395	572	23	dense	dense	JJ
19395	572	24	glass	glass	NN
19395	572	25	.	.	.
19395	573	1	The	the	DT
19395	573	2	plane	plane	NN
19395	573	3	of	of	IN
19395	573	4	polarization	polarization	NN
19395	573	5	of	of	IN
19395	573	6	a	a	DT
19395	573	7	beam	beam	NN
19395	573	8	of	of	IN
19395	573	9	light	light	NN
19395	573	10	,	,	,
19395	573	11	which	which	WDT
19395	573	12	passed	pass	VBD
19395	573	13	unaffected	unaffected	JJ
19395	573	14	through	through	IN
19395	573	15	the	the	DT
19395	573	16	glass	glass	NN
19395	573	17	before	before	IN
19395	573	18	the	the	DT
19395	573	19	switch	switch	NN
19395	573	20	was	be	VBD
19395	573	21	closed	closed	JJ
19395	573	22	,	,	,
19395	573	23	was	be	VBD
19395	573	24	seen	see	VBN
19395	573	25	to	to	TO
19395	573	26	rotate	rotate	VB
19395	573	27	when	when	WRB
19395	573	28	the	the	DT
19395	573	29	magnetic	magnetic	JJ
19395	573	30	field	field	NN
19395	573	31	was	be	VBD
19395	573	32	produced	produce	VBN
19395	573	33	by	by	IN
19395	573	34	the	the	DT
19395	573	35	flow	flow	NN
19395	573	36	of	of	IN
19395	573	37	the	the	DT
19395	573	38	current	current	NN
19395	573	39	.	.	.
19395	574	1	A	a	DT
19395	574	2	similar	similar	JJ
19395	574	3	rotation	rotation	NN
19395	574	4	is	be	VBZ
19395	574	5	now	now	RB
19395	574	6	familiar	familiar	JJ
19395	574	7	in	in	IN
19395	574	8	the	the	DT
19395	574	9	well	well	RB
19395	574	10	-	-	HYPH
19395	574	11	known	know	VBN
19395	574	12	tests	test	NNS
19395	574	13	of	of	IN
19395	574	14	sugars	sugar	NNS
19395	574	15	--	--	:
19395	574	16	lævulose	lævulose	VBN
19395	574	17	and	and	CC
19395	574	18	dextrose	dextrose	NN
19395	574	19	--	--	:
19395	574	20	which	which	WDT
19395	574	21	rotate	rotate	VBP
19395	574	22	plane	plane	NN
19395	574	23	-	-	HYPH
19395	574	24	polarized	polarize	VBN
19395	574	25	light	light	NN
19395	574	26	to	to	IN
19395	574	27	left	left	JJ
19395	574	28	and	and	CC
19395	574	29	right	right	RB
19395	574	30	,	,	,
19395	574	31	respectively	respectively	RB
19395	574	32	.	.	.
19395	575	1	But	but	CC
19395	575	2	in	in	IN
19395	575	3	this	this	DT
19395	575	4	first	first	JJ
19395	575	5	discovery	discovery	NN
19395	575	6	of	of	IN
19395	575	7	a	a	DT
19395	575	8	relationship	relationship	NN
19395	575	9	between	between	IN
19395	575	10	light	light	NN
19395	575	11	and	and	CC
19395	575	12	magnetism	magnetism	NN
19395	575	13	Faraday	Faraday	NNP
19395	575	14	had	have	VBD
19395	575	15	not	not	RB
19395	575	16	taken	take	VBN
19395	575	17	the	the	DT
19395	575	18	more	more	RBR
19395	575	19	important	important	JJ
19395	575	20	step	step	NN
19395	575	21	that	that	WDT
19395	575	22	he	-PRON-	PRP
19395	575	23	coveted	covet	VBD
19395	575	24	--	--	:
19395	575	25	to	to	TO
19395	575	26	determine	determine	VB
19395	575	27	whether	whether	IN
19395	575	28	the	the	DT
19395	575	29	vibration	vibration	NN
19395	575	30	period	period	NN
19395	575	31	of	of	IN
19395	575	32	a	a	DT
19395	575	33	light	light	RB
19395	575	34	-	-	HYPH
19395	575	35	emitting	emit	VBG
19395	575	36	particle	particle	NN
19395	575	37	is	be	VBZ
19395	575	38	subject	subject	JJ
19395	575	39	to	to	IN
19395	575	40	change	change	NN
19395	575	41	in	in	IN
19395	575	42	a	a	DT
19395	575	43	magnetic	magnetic	JJ
19395	575	44	field	field	NN
19395	575	45	.	.	.
19395	576	1	He	-PRON-	PRP
19395	576	2	attempted	attempt	VBD
19395	576	3	this	this	DT
19395	576	4	in	in	IN
19395	576	5	1862	1862	CD
19395	576	6	-	-	,
19395	576	7	-the	-the	DT
19395	576	8	last	last	JJ
19395	576	9	experiment	experiment	NN
19395	576	10	of	of	IN
19395	576	11	his	-PRON-	PRP$
19395	576	12	life	life	NN
19395	576	13	.	.	.
19395	577	1	A	a	DT
19395	577	2	sodium	sodium	NN
19395	577	3	flame	flame	NN
19395	577	4	was	be	VBD
19395	577	5	placed	place	VBN
19395	577	6	between	between	IN
19395	577	7	the	the	DT
19395	577	8	poles	pole	NNS
19395	577	9	of	of	IN
19395	577	10	a	a	DT
19395	577	11	magnet	magnet	NN
19395	577	12	,	,	,
19395	577	13	and	and	CC
19395	577	14	the	the	DT
19395	577	15	yellow	yellow	JJ
19395	577	16	lines	line	NNS
19395	577	17	were	be	VBD
19395	577	18	watched	watch	VBN
19395	577	19	in	in	IN
19395	577	20	a	a	DT
19395	577	21	spectroscope	spectroscope	NN
19395	577	22	when	when	WRB
19395	577	23	the	the	DT
19395	577	24	magnet	magnet	NN
19395	577	25	was	be	VBD
19395	577	26	excited	excite	VBN
19395	577	27	.	.	.
19395	578	1	No	no	DT
19395	578	2	change	change	NN
19395	578	3	could	could	MD
19395	578	4	be	be	VB
19395	578	5	detected	detect	VBN
19395	578	6	,	,	,
19395	578	7	and	and	CC
19395	578	8	none	none	NN
19395	578	9	was	be	VBD
19395	578	10	found	find	VBN
19395	578	11	by	by	IN
19395	578	12	subsequent	subsequent	JJ
19395	578	13	investigators	investigator	NNS
19395	578	14	until	until	IN
19395	578	15	Zeeman	Zeeman	NNP
19395	578	16	,	,	,
19395	578	17	of	of	IN
19395	578	18	Leiden	Leiden	NNP
19395	578	19	,	,	,
19395	578	20	with	with	IN
19395	578	21	more	more	RBR
19395	578	22	powerful	powerful	JJ
19395	578	23	instruments	instrument	NNS
19395	578	24	made	make	VBD
19395	578	25	his	-PRON-	PRP$
19395	578	26	famous	famous	JJ
19395	578	27	discovery	discovery	NN
19395	578	28	,	,	,
19395	578	29	the	the	DT
19395	578	30	twenty	twenty	CD
19395	578	31	-	-	HYPH
19395	578	32	fifth	fifth	JJ
19395	578	33	anniversary	anniversary	NN
19395	578	34	of	of	IN
19395	578	35	which	which	WDT
19395	578	36	has	have	VBZ
19395	578	37	recently	recently	RB
19395	578	38	been	be	VBN
19395	578	39	celebrated	celebrate	VBN
19395	578	40	.	.	.
19395	579	1	[	[	-LRB-
19395	579	2	Illustration	illustration	NN
19395	579	3	:	:	:
19395	579	4	Fig	Fig	NNP
19395	579	5	.	.	.
19395	580	1	32	32	CD
19395	580	2	.	.	.
19395	581	1	Pasadena	Pasadena	NNP
19395	581	2	Laboratory	Laboratory	NNP
19395	581	3	of	of	IN
19395	581	4	the	the	DT
19395	581	5	Mount	Mount	NNP
19395	581	6	Wilson	Wilson	NNP
19395	581	7	Observatory	Observatory	NNP
19395	581	8	.	.	.
19395	582	1	Showing	show	VBG
19395	582	2	the	the	DT
19395	582	3	large	large	JJ
19395	582	4	magnet	magnet	NN
19395	582	5	(	(	-LRB-
19395	582	6	on	on	IN
19395	582	7	the	the	DT
19395	582	8	left	left	NN
19395	582	9	)	)	-RRB-
19395	582	10	and	and	CC
19395	582	11	the	the	DT
19395	582	12	spectroscopes	spectroscope	NNS
19395	582	13	used	use	VBN
19395	582	14	for	for	IN
19395	582	15	the	the	DT
19395	582	16	study	study	NN
19395	582	17	of	of	IN
19395	582	18	the	the	DT
19395	582	19	effect	effect	NN
19395	582	20	of	of	IN
19395	582	21	magnetism	magnetism	NN
19395	582	22	on	on	IN
19395	582	23	radiation	radiation	NN
19395	582	24	.	.	.
19395	583	1	A	a	DT
19395	583	2	single	single	JJ
19395	583	3	line	line	NN
19395	583	4	in	in	IN
19395	583	5	the	the	DT
19395	583	6	spectrum	spectrum	NN
19395	583	7	is	be	VBZ
19395	583	8	split	split	VBN
19395	583	9	by	by	IN
19395	583	10	the	the	DT
19395	583	11	magnetic	magnetic	JJ
19395	583	12	field	field	NN
19395	583	13	into	into	IN
19395	583	14	from	from	IN
19395	583	15	three	three	CD
19395	583	16	to	to	TO
19395	583	17	twenty	twenty	CD
19395	583	18	-	-	HYPH
19395	583	19	one	one	CD
19395	583	20	components	component	NNS
19395	583	21	,	,	,
19395	583	22	as	as	IN
19395	583	23	illustrated	illustrate	VBN
19395	583	24	in	in	IN
19395	583	25	Fig	Fig	NNP
19395	583	26	.	.	.
19395	584	1	34	34	CD
19395	584	2	.	.	.
19395	585	1	The	the	DT
19395	585	2	corresponding	correspond	VBG
19395	585	3	lines	line	NNS
19395	585	4	in	in	IN
19395	585	5	the	the	DT
19395	585	6	spectra	spectra	NN
19395	585	7	of	of	IN
19395	585	8	sun	sun	NN
19395	585	9	-	-	HYPH
19395	585	10	spots	spot	NNS
19395	585	11	are	be	VBP
19395	585	12	split	split	VBN
19395	585	13	up	up	RP
19395	585	14	in	in	IN
19395	585	15	precisely	precisely	RB
19395	585	16	the	the	DT
19395	585	17	same	same	JJ
19395	585	18	way	way	NN
19395	585	19	,	,	,
19395	585	20	thus	thus	RB
19395	585	21	indicating	indicate	VBG
19395	585	22	the	the	DT
19395	585	23	presence	presence	NN
19395	585	24	of	of	IN
19395	585	25	powerful	powerful	JJ
19395	585	26	magnetic	magnetic	JJ
19395	585	27	fields	field	NNS
19395	585	28	in	in	IN
19395	585	29	the	the	DT
19395	585	30	sun	sun	NN
19395	585	31	.	.	.
19395	585	32	]	]	-RRB-
19395	586	1	His	-PRON-	PRP$
19395	586	2	method	method	NN
19395	586	3	of	of	IN
19395	586	4	procedure	procedure	NN
19395	586	5	was	be	VBD
19395	586	6	similar	similar	JJ
19395	586	7	to	to	IN
19395	586	8	Faraday	Faraday	NNP
19395	586	9	's	's	POS
19395	586	10	,	,	,
19395	586	11	but	but	CC
19395	586	12	his	-PRON-	PRP$
19395	586	13	magnet	magnet	NN
19395	586	14	and	and	CC
19395	586	15	spectroscope	spectroscope	NN
19395	586	16	were	be	VBD
19395	586	17	much	much	RB
19395	586	18	more	more	RBR
19395	586	19	powerful	powerful	JJ
19395	586	20	,	,	,
19395	586	21	and	and	CC
19395	586	22	a	a	DT
19395	586	23	theory	theory	NN
19395	586	24	due	due	JJ
19395	586	25	to	to	IN
19395	586	26	Lorentz	Lorentz	NNP
19395	586	27	,	,	,
19395	586	28	predicting	predict	VBG
19395	586	29	the	the	DT
19395	586	30	nature	nature	NN
19395	586	31	of	of	IN
19395	586	32	the	the	DT
19395	586	33	change	change	NN
19395	586	34	to	to	TO
19395	586	35	be	be	VB
19395	586	36	expected	expect	VBN
19395	586	37	,	,	,
19395	586	38	was	be	VBD
19395	586	39	available	available	JJ
19395	586	40	as	as	IN
19395	586	41	a	a	DT
19395	586	42	check	check	NN
19395	586	43	on	on	IN
19395	586	44	his	-PRON-	PRP$
19395	586	45	results	result	NNS
19395	586	46	.	.	.
19395	587	1	When	when	WRB
19395	587	2	the	the	DT
19395	587	3	current	current	NN
19395	587	4	was	be	VBD
19395	587	5	applied	apply	VBN
19395	587	6	the	the	DT
19395	587	7	lines	line	NNS
19395	587	8	were	be	VBD
19395	587	9	seen	see	VBN
19395	587	10	to	to	TO
19395	587	11	widen	widen	VB
19395	587	12	.	.	.
19395	588	1	In	in	IN
19395	588	2	a	a	DT
19395	588	3	still	still	RB
19395	588	4	more	more	RBR
19395	588	5	powerful	powerful	JJ
19395	588	6	magnetic	magnetic	JJ
19395	588	7	field	field	NN
19395	588	8	each	each	DT
19395	588	9	of	of	IN
19395	588	10	them	-PRON-	PRP
19395	588	11	split	split	VBD
19395	588	12	into	into	IN
19395	588	13	two	two	CD
19395	588	14	components	component	NNS
19395	588	15	(	(	-LRB-
19395	588	16	when	when	WRB
19395	588	17	the	the	DT
19395	588	18	observation	observation	NN
19395	588	19	was	be	VBD
19395	588	20	made	make	VBN
19395	588	21	along	along	IN
19395	588	22	the	the	DT
19395	588	23	lines	line	NNS
19395	588	24	of	of	IN
19395	588	25	force	force	NN
19395	588	26	)	)	-RRB-
19395	588	27	,	,	,
19395	588	28	and	and	CC
19395	588	29	the	the	DT
19395	588	30	light	light	NN
19395	588	31	of	of	IN
19395	588	32	the	the	DT
19395	588	33	components	component	NNS
19395	588	34	of	of	IN
19395	588	35	each	each	DT
19395	588	36	line	line	NN
19395	588	37	was	be	VBD
19395	588	38	found	find	VBN
19395	588	39	to	to	TO
19395	588	40	be	be	VB
19395	588	41	circularly	circularly	RB
19395	588	42	polarized	polarize	VBN
19395	588	43	in	in	IN
19395	588	44	opposite	opposite	JJ
19395	588	45	directions	direction	NNS
19395	588	46	.	.	.
19395	589	1	Strictly	strictly	RB
19395	589	2	in	in	IN
19395	589	3	harmony	harmony	NN
19395	589	4	with	with	IN
19395	589	5	Lorentz	Lorentz	NNP
19395	589	6	's	's	POS
19395	589	7	theory	theory	NN
19395	589	8	,	,	,
19395	589	9	this	this	DT
19395	589	10	splitting	splitting	NN
19395	589	11	and	and	CC
19395	589	12	polarization	polarization	NN
19395	589	13	proved	prove	VBD
19395	589	14	the	the	DT
19395	589	15	presence	presence	NN
19395	589	16	in	in	IN
19395	589	17	the	the	DT
19395	589	18	luminous	luminous	JJ
19395	589	19	vapor	vapor	NN
19395	589	20	of	of	IN
19395	589	21	exactly	exactly	RB
19395	589	22	such	such	JJ
19395	589	23	negatively	negatively	RB
19395	589	24	charged	charge	VBN
19395	589	25	electrons	electron	NNS
19395	589	26	as	as	IN
19395	589	27	had	have	VBD
19395	589	28	been	be	VBN
19395	589	29	indicated	indicate	VBN
19395	589	30	there	there	EX
19395	589	31	previously	previously	RB
19395	589	32	by	by	IN
19395	589	33	very	very	RB
19395	589	34	different	different	JJ
19395	589	35	experimental	experimental	JJ
19395	589	36	methods	method	NNS
19395	589	37	.	.	.
19395	590	1	In	in	IN
19395	590	2	1908	1908	CD
19395	590	3	great	great	JJ
19395	590	4	cyclonic	cyclonic	JJ
19395	590	5	storms	storm	NNS
19395	590	6	,	,	,
19395	590	7	or	or	CC
19395	590	8	vortices	vortex	NNS
19395	590	9	,	,	,
19395	590	10	were	be	VBD
19395	590	11	discovered	discover	VBN
19395	590	12	at	at	IN
19395	590	13	the	the	DT
19395	590	14	Mount	Mount	NNP
19395	590	15	Wilson	Wilson	NNP
19395	590	16	Observatory	Observatory	NNP
19395	590	17	centring	centre	VBG
19395	590	18	in	in	IN
19395	590	19	sun	sun	NN
19395	590	20	-	-	HYPH
19395	590	21	spots	spot	NNS
19395	590	22	.	.	.
19395	591	1	Such	such	JJ
19395	591	2	whirling	whirl	VBG
19395	591	3	masses	masse	NNS
19395	591	4	of	of	IN
19395	591	5	hot	hot	JJ
19395	591	6	vapors	vapor	NNS
19395	591	7	,	,	,
19395	591	8	inferred	infer	VBN
19395	591	9	from	from	IN
19395	591	10	Sir	Sir	NNP
19395	591	11	Joseph	Joseph	NNP
19395	591	12	Thomson	Thomson	NNP
19395	591	13	's	's	POS
19395	591	14	results	result	NNS
19395	591	15	to	to	TO
19395	591	16	contain	contain	VB
19395	591	17	electrically	electrically	RB
19395	591	18	charged	charge	VBN
19395	591	19	particles	particle	NNS
19395	591	20	,	,	,
19395	591	21	should	should	MD
19395	591	22	give	give	VB
19395	591	23	rise	rise	NN
19395	591	24	to	to	IN
19395	591	25	a	a	DT
19395	591	26	magnetic	magnetic	JJ
19395	591	27	field	field	NN
19395	591	28	.	.	.
19395	592	1	This	this	DT
19395	592	2	hypothesis	hypothesis	NN
19395	592	3	at	at	IN
19395	592	4	once	once	RB
19395	592	5	suggested	suggest	VBD
19395	592	6	that	that	IN
19395	592	7	the	the	DT
19395	592	8	double	double	JJ
19395	592	9	lines	line	NNS
19395	592	10	observed	observe	VBN
19395	592	11	by	by	IN
19395	592	12	Young	Young	NNP
19395	592	13	might	may	MD
19395	592	14	really	really	RB
19395	592	15	represent	represent	VB
19395	592	16	the	the	DT
19395	592	17	Zeeman	Zeeman	NNP
19395	592	18	effect	effect	NN
19395	592	19	.	.	.
19395	593	1	The	the	DT
19395	593	2	test	test	NN
19395	593	3	was	be	VBD
19395	593	4	made	make	VBN
19395	593	5	,	,	,
19395	593	6	and	and	CC
19395	593	7	all	all	PDT
19395	593	8	the	the	DT
19395	593	9	characteristic	characteristic	JJ
19395	593	10	phenomena	phenomenon	NNS
19395	593	11	of	of	IN
19395	593	12	radiation	radiation	NN
19395	593	13	in	in	IN
19395	593	14	a	a	DT
19395	593	15	magnetic	magnetic	JJ
19395	593	16	field	field	NN
19395	593	17	were	be	VBD
19395	593	18	found	find	VBN
19395	593	19	.	.	.
19395	594	1	Thus	thus	RB
19395	594	2	a	a	DT
19395	594	3	great	great	JJ
19395	594	4	physical	physical	JJ
19395	594	5	experiment	experiment	NN
19395	594	6	is	be	VBZ
19395	594	7	constantly	constantly	RB
19395	594	8	being	be	VBG
19395	594	9	performed	perform	VBN
19395	594	10	for	for	IN
19395	594	11	us	-PRON-	PRP
19395	594	12	in	in	IN
19395	594	13	the	the	DT
19395	594	14	sun	sun	NN
19395	594	15	.	.	.
19395	595	1	Every	every	DT
19395	595	2	large	large	JJ
19395	595	3	sunspot	sunspot	NN
19395	595	4	contains	contain	VBZ
19395	595	5	a	a	DT
19395	595	6	magnetic	magnetic	JJ
19395	595	7	field	field	NN
19395	595	8	covering	cover	VBG
19395	595	9	many	many	JJ
19395	595	10	thousands	thousand	NNS
19395	595	11	of	of	IN
19395	595	12	square	square	JJ
19395	595	13	miles	mile	NNS
19395	595	14	,	,	,
19395	595	15	within	within	IN
19395	595	16	which	which	WDT
19395	595	17	the	the	DT
19395	595	18	spectrum	spectrum	NN
19395	595	19	lines	line	NNS
19395	595	20	of	of	IN
19395	595	21	iron	iron	NN
19395	595	22	,	,	,
19395	595	23	manganese	manganese	JJ
19395	595	24	,	,	,
19395	595	25	chromium	chromium	NN
19395	595	26	,	,	,
19395	595	27	titanium	titanium	NN
19395	595	28	,	,	,
19395	595	29	vanadium	vanadium	NN
19395	595	30	,	,	,
19395	595	31	calcium	calcium	NN
19395	595	32	,	,	,
19395	595	33	and	and	CC
19395	595	34	other	other	JJ
19395	595	35	metallic	metallic	JJ
19395	595	36	vapors	vapor	NNS
19395	595	37	are	be	VBP
19395	595	38	so	so	RB
19395	595	39	powerfully	powerfully	RB
19395	595	40	affected	affected	JJ
19395	595	41	that	that	IN
19395	595	42	their	-PRON-	PRP$
19395	595	43	widening	widening	NN
19395	595	44	and	and	CC
19395	595	45	splitting	splitting	NN
19395	595	46	can	can	MD
19395	595	47	be	be	VB
19395	595	48	seen	see	VBN
19395	595	49	with	with	IN
19395	595	50	telescopes	telescope	NNS
19395	595	51	and	and	CC
19395	595	52	spectroscopes	spectroscope	NNS
19395	595	53	of	of	IN
19395	595	54	moderate	moderate	JJ
19395	595	55	size	size	NN
19395	595	56	.	.	.
19395	596	1	THE	the	DT
19395	596	2	TOWER	TOWER	NNP
19395	596	3	TELESCOPE	telescope	VBP
19395	596	4	Both	both	DT
19395	596	5	of	of	IN
19395	596	6	these	these	DT
19395	596	7	illustrations	illustration	NNS
19395	596	8	show	show	VBP
19395	596	9	how	how	WRB
19395	596	10	the	the	DT
19395	596	11	physicist	physicist	NN
19395	596	12	and	and	CC
19395	596	13	chemist	chemist	NN
19395	596	14	,	,	,
19395	596	15	when	when	WRB
19395	596	16	adequately	adequately	RB
19395	596	17	armed	armed	JJ
19395	596	18	for	for	IN
19395	596	19	astronomical	astronomical	JJ
19395	596	20	attack	attack	NN
19395	596	21	,	,	,
19395	596	22	can	can	MD
19395	596	23	take	take	VB
19395	596	24	advantage	advantage	NN
19395	596	25	in	in	IN
19395	596	26	their	-PRON-	PRP$
19395	596	27	studies	study	NNS
19395	596	28	of	of	IN
19395	596	29	the	the	DT
19395	596	30	stupendous	stupendous	JJ
19395	596	31	processes	process	NNS
19395	596	32	visible	visible	JJ
19395	596	33	in	in	IN
19395	596	34	cosmic	cosmic	JJ
19395	596	35	crucibles	crucible	NNS
19395	596	36	,	,	,
19395	596	37	heated	heat	VBN
19395	596	38	to	to	IN
19395	596	39	high	high	JJ
19395	596	40	temperatures	temperature	NNS
19395	596	41	and	and	CC
19395	596	42	influenced	influence	VBN
19395	596	43	,	,	,
19395	596	44	as	as	IN
19395	596	45	in	in	IN
19395	596	46	the	the	DT
19395	596	47	case	case	NN
19395	596	48	of	of	IN
19395	596	49	sun	sun	NN
19395	596	50	-	-	HYPH
19395	596	51	spots	spot	NNS
19395	596	52	,	,	,
19395	596	53	by	by	IN
19395	596	54	intense	intense	JJ
19395	596	55	magnetic	magnetic	JJ
19395	596	56	fields	field	NNS
19395	596	57	.	.	.
19395	597	1	Certain	certain	JJ
19395	597	2	modern	modern	JJ
19395	597	3	instruments	instrument	NNS
19395	597	4	,	,	,
19395	597	5	like	like	IN
19395	597	6	the	the	DT
19395	597	7	60-foot	60-foot	CD
19395	597	8	and	and	CC
19395	597	9	150-foot	150-foot	CD
19395	597	10	tower	tower	NN
19395	597	11	telescopes	telescope	NNS
19395	597	12	on	on	IN
19395	597	13	Mount	Mount	NNP
19395	597	14	Wilson	Wilson	NNP
19395	597	15	,	,	,
19395	597	16	are	be	VBP
19395	597	17	especially	especially	RB
19395	597	18	designed	design	VBN
19395	597	19	for	for	IN
19395	597	20	observing	observe	VBG
19395	597	21	the	the	DT
19395	597	22	course	course	NN
19395	597	23	of	of	IN
19395	597	24	these	these	DT
19395	597	25	experiments	experiment	NNS
19395	597	26	.	.	.
19395	598	1	The	the	DT
19395	598	2	second	second	JJ
19395	598	3	of	of	IN
19395	598	4	these	these	DT
19395	598	5	telescopes	telescope	NNS
19395	598	6	produces	produce	VBZ
19395	598	7	at	at	IN
19395	598	8	a	a	DT
19395	598	9	fixed	fix	VBN
19395	598	10	point	point	NN
19395	598	11	in	in	IN
19395	598	12	a	a	DT
19395	598	13	laboratory	laboratory	NN
19395	598	14	an	an	DT
19395	598	15	image	image	NN
19395	598	16	of	of	IN
19395	598	17	the	the	DT
19395	598	18	sun	sun	NN
19395	598	19	about	about	RB
19395	598	20	16	16	CD
19395	598	21	inches	inch	NNS
19395	598	22	in	in	IN
19395	598	23	diameter	diameter	NN
19395	598	24	,	,	,
19395	598	25	thus	thus	RB
19395	598	26	enlarging	enlarge	VBG
19395	598	27	the	the	DT
19395	598	28	sun	sun	NN
19395	598	29	-	-	HYPH
19395	598	30	spots	spot	NNS
19395	598	31	to	to	IN
19395	598	32	such	such	PDT
19395	598	33	a	a	DT
19395	598	34	scale	scale	NN
19395	598	35	that	that	WDT
19395	598	36	the	the	DT
19395	598	37	magnetic	magnetic	JJ
19395	598	38	phenomena	phenomenon	NNS
19395	598	39	of	of	IN
19395	598	40	their	-PRON-	PRP$
19395	598	41	various	various	JJ
19395	598	42	parts	part	NNS
19395	598	43	can	can	MD
19395	598	44	be	be	VB
19395	598	45	separately	separately	RB
19395	598	46	studied	study	VBN
19395	598	47	.	.	.
19395	599	1	This	this	DT
19395	599	2	analysis	analysis	NN
19395	599	3	is	be	VBZ
19395	599	4	accomplished	accomplish	VBN
19395	599	5	with	with	IN
19395	599	6	a	a	DT
19395	599	7	spectroscope	spectroscope	NN
19395	599	8	80	80	CD
19395	599	9	feet	foot	NNS
19395	599	10	in	in	IN
19395	599	11	length	length	NN
19395	599	12	,	,	,
19395	599	13	mounted	mount	VBN
19395	599	14	in	in	IN
19395	599	15	a	a	DT
19395	599	16	subterranean	subterranean	JJ
19395	599	17	chamber	chamber	NN
19395	599	18	beneath	beneath	IN
19395	599	19	the	the	DT
19395	599	20	tower	tower	NN
19395	599	21	.	.	.
19395	600	1	The	the	DT
19395	600	2	varied	varied	JJ
19395	600	3	results	result	NNS
19395	600	4	of	of	IN
19395	600	5	such	such	JJ
19395	600	6	investigations	investigation	NNS
19395	600	7	can	can	MD
19395	600	8	not	not	RB
19395	600	9	be	be	VB
19395	600	10	described	describe	VBN
19395	600	11	here	here	RB
19395	600	12	.	.	.
19395	601	1	Only	only	RB
19395	601	2	one	one	CD
19395	601	3	of	of	IN
19395	601	4	them	-PRON-	PRP
19395	601	5	may	may	MD
19395	601	6	be	be	VB
19395	601	7	mentioned	mention	VBN
19395	601	8	--	--	:
19395	601	9	the	the	DT
19395	601	10	discovery	discovery	NN
19395	601	11	that	that	IN
19395	601	12	the	the	DT
19395	601	13	entire	entire	JJ
19395	601	14	sun	sun	NN
19395	601	15	,	,	,
19395	601	16	rotating	rotate	VBG
19395	601	17	on	on	IN
19395	601	18	its	-PRON-	PRP$
19395	601	19	axis	axis	NN
19395	601	20	,	,	,
19395	601	21	is	be	VBZ
19395	601	22	a	a	DT
19395	601	23	great	great	JJ
19395	601	24	magnet	magnet	NN
19395	601	25	.	.	.
19395	602	1	Hence	hence	RB
19395	602	2	we	-PRON-	PRP
19395	602	3	may	may	MD
19395	602	4	reasonably	reasonably	RB
19395	602	5	infer	infer	VB
19395	602	6	that	that	IN
19395	602	7	every	every	DT
19395	602	8	star	star	NN
19395	602	9	,	,	,
19395	602	10	and	and	CC
19395	602	11	probably	probably	RB
19395	602	12	every	every	DT
19395	602	13	planet	planet	NN
19395	602	14	,	,	,
19395	602	15	is	be	VBZ
19395	602	16	also	also	RB
19395	602	17	a	a	DT
19395	602	18	magnet	magnet	NN
19395	602	19	,	,	,
19395	602	20	as	as	IN
19395	602	21	the	the	DT
19395	602	22	earth	earth	NN
19395	602	23	has	have	VBZ
19395	602	24	been	be	VBN
19395	602	25	known	know	VBN
19395	602	26	to	to	TO
19395	602	27	be	be	VB
19395	602	28	since	since	IN
19395	602	29	the	the	DT
19395	602	30	days	day	NNS
19395	602	31	of	of	IN
19395	602	32	Gilbert	Gilbert	NNP
19395	602	33	's	's	POS
19395	602	34	"	"	``
19395	602	35	De	De	NNP
19395	602	36	Magnete	Magnete	NNP
19395	602	37	.	.	.
19395	602	38	"	"	''
19395	603	1	Here	here	RB
19395	603	2	lies	lie	VBZ
19395	603	3	one	one	CD
19395	603	4	of	of	IN
19395	603	5	the	the	DT
19395	603	6	best	good	JJS
19395	603	7	clues	clue	NNS
19395	603	8	for	for	IN
19395	603	9	the	the	DT
19395	603	10	physicist	physicist	NN
19395	603	11	who	who	WP
19395	603	12	seeks	seek	VBZ
19395	603	13	the	the	DT
19395	603	14	cause	cause	NN
19395	603	15	of	of	IN
19395	603	16	magnetism	magnetism	NN
19395	603	17	,	,	,
19395	603	18	and	and	CC
19395	603	19	attempts	attempt	VBZ
19395	603	20	to	to	TO
19395	603	21	produce	produce	VB
19395	603	22	it	-PRON-	PRP
19395	603	23	,	,	,
19395	603	24	as	as	IN
19395	603	25	Barnett	Barnett	NNP
19395	603	26	has	have	VBZ
19395	603	27	recently	recently	RB
19395	603	28	succeeded	succeed	VBN
19395	603	29	in	in	IN
19395	603	30	doing	do	VBG
19395	603	31	,	,	,
19395	603	32	by	by	IN
19395	603	33	rapidly	rapidly	RB
19395	603	34	whirling	whirl	VBG
19395	603	35	masses	masse	NNS
19395	603	36	of	of	IN
19395	603	37	metal	metal	NN
19395	603	38	in	in	IN
19395	603	39	the	the	DT
19395	603	40	laboratory	laboratory	NN
19395	603	41	.	.	.
19395	604	1	[	[	-LRB-
19395	604	2	Illustration	illustration	NN
19395	604	3	:	:	:
19395	604	4	Fig	Fig	NNP
19395	604	5	.	.	.
19395	605	1	33	33	CD
19395	605	2	.	.	.
19395	606	1	Sun	Sun	NNP
19395	606	2	-	-	HYPH
19395	606	3	spot	spot	NN
19395	606	4	vortex	vortex	NNS
19395	606	5	in	in	IN
19395	606	6	the	the	DT
19395	606	7	upper	upper	JJ
19395	606	8	hydrogen	hydrogen	NN
19395	606	9	atmosphere	atmosphere	NN
19395	606	10	.	.	.
19395	607	1	(	(	-LRB-
19395	607	2	Benioff	Benioff	NNP
19395	607	3	)	)	-RRB-
19395	607	4	.	.	.
19395	608	1	Photographed	photograph	VBN
19395	608	2	with	with	IN
19395	608	3	the	the	DT
19395	608	4	spectroheliograph	spectroheliograph	NN
19395	608	5	.	.	.
19395	609	1	The	the	DT
19395	609	2	electric	electric	JJ
19395	609	3	vortex	vortex	NN
19395	609	4	that	that	WDT
19395	609	5	causes	cause	VBZ
19395	609	6	the	the	DT
19395	609	7	magnetic	magnetic	JJ
19395	609	8	field	field	NN
19395	609	9	of	of	IN
19395	609	10	the	the	DT
19395	609	11	spot	spot	NN
19395	609	12	lies	lie	VBZ
19395	609	13	at	at	IN
19395	609	14	a	a	DT
19395	609	15	lower	low	JJR
19395	609	16	level	level	NN
19395	609	17	,	,	,
19395	609	18	and	and	CC
19395	609	19	is	be	VBZ
19395	609	20	not	not	RB
19395	609	21	shown	show	VBN
19395	609	22	by	by	IN
19395	609	23	such	such	JJ
19395	609	24	photographs	photograph	NNS
19395	609	25	.	.	.
19395	609	26	]	]	-RRB-
19395	610	1	Perhaps	perhaps	RB
19395	610	2	a	a	DT
19395	610	3	word	word	NN
19395	610	4	of	of	IN
19395	610	5	caution	caution	NN
19395	610	6	should	should	MD
19395	610	7	be	be	VB
19395	610	8	interpolated	interpolate	VBN
19395	610	9	at	at	IN
19395	610	10	this	this	DT
19395	610	11	point	point	NN
19395	610	12	.	.	.
19395	611	1	Solar	solar	JJ
19395	611	2	magnetism	magnetism	NN
19395	611	3	in	in	IN
19395	611	4	no	no	DT
19395	611	5	wise	wise	JJ
19395	611	6	accounts	account	NNS
19395	611	7	for	for	IN
19395	611	8	the	the	DT
19395	611	9	sun	sun	NN
19395	611	10	's	's	POS
19395	611	11	gravitational	gravitational	JJ
19395	611	12	power	power	NN
19395	611	13	.	.	.
19395	612	1	Indeed	indeed	RB
19395	612	2	,	,	,
19395	612	3	its	-PRON-	PRP$
19395	612	4	attraction	attraction	NN
19395	612	5	can	can	MD
19395	612	6	not	not	RB
19395	612	7	be	be	VB
19395	612	8	felt	feel	VBN
19395	612	9	by	by	IN
19395	612	10	the	the	DT
19395	612	11	most	most	RBS
19395	612	12	delicate	delicate	JJ
19395	612	13	instruments	instrument	NNS
19395	612	14	at	at	IN
19395	612	15	the	the	DT
19395	612	16	distance	distance	NN
19395	612	17	of	of	IN
19395	612	18	the	the	DT
19395	612	19	earth	earth	NN
19395	612	20	,	,	,
19395	612	21	and	and	CC
19395	612	22	would	would	MD
19395	612	23	still	still	RB
19395	612	24	be	be	VB
19395	612	25	unknown	unknown	JJ
19395	612	26	were	be	VBD
19395	612	27	it	-PRON-	PRP
19395	612	28	not	not	RB
19395	612	29	for	for	IN
19395	612	30	the	the	DT
19395	612	31	influence	influence	NN
19395	612	32	of	of	IN
19395	612	33	magnetism	magnetism	NN
19395	612	34	on	on	IN
19395	612	35	light	light	NN
19395	612	36	.	.	.
19395	613	1	Auroras	aurora	NNS
19395	613	2	,	,	,
19395	613	3	magnetic	magnetic	JJ
19395	613	4	storms	storm	NNS
19395	613	5	,	,	,
19395	613	6	and	and	CC
19395	613	7	such	such	JJ
19395	613	8	electric	electric	JJ
19395	613	9	currents	current	NNS
19395	613	10	as	as	IN
19395	613	11	those	those	DT
19395	613	12	that	that	WDT
19395	613	13	recently	recently	RB
19395	613	14	deranged	derange	VBD
19395	613	15	several	several	JJ
19395	613	16	Atlantic	Atlantic	NNP
19395	613	17	cables	cable	NNS
19395	613	18	are	be	VBP
19395	613	19	due	due	JJ
19395	613	20	,	,	,
19395	613	21	not	not	RB
19395	613	22	to	to	IN
19395	613	23	the	the	DT
19395	613	24	magnetism	magnetism	NN
19395	613	25	of	of	IN
19395	613	26	the	the	DT
19395	613	27	sun	sun	NN
19395	613	28	or	or	CC
19395	613	29	its	-PRON-	PRP$
19395	613	30	spots	spot	NNS
19395	613	31	,	,	,
19395	613	32	but	but	CC
19395	613	33	probably	probably	RB
19395	613	34	to	to	IN
19395	613	35	streams	stream	NNS
19395	613	36	of	of	IN
19395	613	37	electrons	electron	NNS
19395	613	38	,	,	,
19395	613	39	shot	shoot	VBD
19395	613	40	out	out	RP
19395	613	41	from	from	IN
19395	613	42	highly	highly	RB
19395	613	43	disturbed	disturb	VBN
19395	613	44	areas	area	NNS
19395	613	45	of	of	IN
19395	613	46	the	the	DT
19395	613	47	solar	solar	JJ
19395	613	48	surface	surface	NN
19395	613	49	surrounding	surround	VBG
19395	613	50	great	great	JJ
19395	613	51	sun	sun	NN
19395	613	52	-	-	HYPH
19395	613	53	spots	spot	NNS
19395	613	54	,	,	,
19395	613	55	traversing	traverse	VBG
19395	613	56	ninety	ninety	CD
19395	613	57	-	-	HYPH
19395	613	58	three	three	CD
19395	613	59	million	million	CD
19395	613	60	miles	mile	NNS
19395	613	61	of	of	IN
19395	613	62	the	the	DT
19395	613	63	ether	ether	NN
19395	613	64	of	of	IN
19395	613	65	space	space	NN
19395	613	66	,	,	,
19395	613	67	and	and	CC
19395	613	68	penetrating	penetrating	NN
19395	613	69	deep	deep	RB
19395	613	70	into	into	IN
19395	613	71	the	the	DT
19395	613	72	earth	earth	NN
19395	613	73	's	's	POS
19395	613	74	atmosphere	atmosphere	NN
19395	613	75	.	.	.
19395	614	1	These	these	DT
19395	614	2	striking	striking	JJ
19395	614	3	phenomena	phenomena	NN
19395	614	4	lead	lead	VBP
19395	614	5	us	-PRON-	PRP
19395	614	6	into	into	IN
19395	614	7	another	another	DT
19395	614	8	chapter	chapter	NN
19395	614	9	of	of	IN
19395	614	10	physics	physics	NN
19395	614	11	,	,	,
19395	614	12	which	which	WDT
19395	614	13	limitations	limitation	NNS
19395	614	14	of	of	IN
19395	614	15	space	space	NN
19395	614	16	forbid	forbid	VB
19395	614	17	us	-PRON-	PRP
19395	614	18	to	to	TO
19395	614	19	pursue	pursue	VB
19395	614	20	.	.	.
19395	615	1	STELLAR	stellar	JJ
19395	615	2	CHEMISTRY	CHEMISTRY	NNS
19395	615	3	Let	let	VBP
19395	615	4	us	-PRON-	PRP
19395	615	5	turn	turn	VB
19395	615	6	again	again	RB
19395	615	7	to	to	IN
19395	615	8	chemistry	chemistry	NN
19395	615	9	,	,	,
19395	615	10	and	and	CC
19395	615	11	see	see	VB
19395	615	12	where	where	WRB
19395	615	13	experiments	experiment	NNS
19395	615	14	performed	perform	VBN
19395	615	15	in	in	IN
19395	615	16	cosmic	cosmic	JJ
19395	615	17	laboratories	laboratory	NNS
19395	615	18	can	can	MD
19395	615	19	serve	serve	VB
19395	615	20	as	as	IN
19395	615	21	a	a	DT
19395	615	22	guide	guide	NN
19395	615	23	to	to	IN
19395	615	24	the	the	DT
19395	615	25	investigator	investigator	NN
19395	615	26	.	.	.
19395	616	1	A	a	DT
19395	616	2	spinning	spin	VBG
19395	616	3	solar	solar	JJ
19395	616	4	tornado	tornado	NN
19395	616	5	,	,	,
19395	616	6	incomparably	incomparably	RB
19395	616	7	greater	great	JJR
19395	616	8	in	in	IN
19395	616	9	scale	scale	NN
19395	616	10	than	than	IN
19395	616	11	the	the	DT
19395	616	12	devastating	devastate	VBG
19395	616	13	whirlwinds	whirlwind	NNS
19395	616	14	that	that	WDT
19395	616	15	so	so	RB
19395	616	16	often	often	RB
19395	616	17	cut	cut	VBD
19395	616	18	narrow	narrow	JJ
19395	616	19	paths	path	NNS
19395	616	20	of	of	IN
19395	616	21	destruction	destruction	NN
19395	616	22	through	through	IN
19395	616	23	town	town	NN
19395	616	24	and	and	CC
19395	616	25	country	country	NN
19395	616	26	in	in	IN
19395	616	27	the	the	DT
19395	616	28	Middle	Middle	NNP
19395	616	29	West	West	NNP
19395	616	30	,	,	,
19395	616	31	gradually	gradually	RB
19395	616	32	gives	give	VBZ
19395	616	33	rise	rise	NN
19395	616	34	to	to	IN
19395	616	35	a	a	DT
19395	616	36	sun	sun	NN
19395	616	37	-	-	HYPH
19395	616	38	spot	spot	NN
19395	616	39	.	.	.
19395	617	1	The	the	DT
19395	617	2	expansion	expansion	NN
19395	617	3	produced	produce	VBN
19395	617	4	by	by	IN
19395	617	5	the	the	DT
19395	617	6	centrifugal	centrifugal	JJ
19395	617	7	force	force	NN
19395	617	8	at	at	IN
19395	617	9	the	the	DT
19395	617	10	centre	centre	NN
19395	617	11	of	of	IN
19395	617	12	the	the	DT
19395	617	13	storm	storm	NN
19395	617	14	cools	cool	VBZ
19395	617	15	the	the	DT
19395	617	16	intensely	intensely	RB
19395	617	17	hot	hot	JJ
19395	617	18	gases	gas	NNS
19395	617	19	of	of	IN
19395	617	20	the	the	DT
19395	617	21	solar	solar	JJ
19395	617	22	atmosphere	atmosphere	NN
19395	617	23	to	to	IN
19395	617	24	a	a	DT
19395	617	25	point	point	NN
19395	617	26	where	where	WRB
19395	617	27	chemical	chemical	NN
19395	617	28	union	union	NN
19395	617	29	can	can	MD
19395	617	30	occur	occur	VB
19395	617	31	.	.	.
19395	618	1	Titanium	titanium	NN
19395	618	2	and	and	CC
19395	618	3	oxygen	oxygen	NN
19395	618	4	,	,	,
19395	618	5	too	too	RB
19395	618	6	hot	hot	JJ
19395	618	7	to	to	TO
19395	618	8	combine	combine	VB
19395	618	9	in	in	IN
19395	618	10	most	most	JJS
19395	618	11	regions	region	NNS
19395	618	12	of	of	IN
19395	618	13	the	the	DT
19395	618	14	sun	sun	NN
19395	618	15	,	,	,
19395	618	16	join	join	VBP
19395	618	17	to	to	TO
19395	618	18	form	form	VB
19395	618	19	the	the	DT
19395	618	20	vapor	vapor	NN
19395	618	21	of	of	IN
19395	618	22	titanium	titanium	NN
19395	618	23	oxide	oxide	NN
19395	618	24	,	,	,
19395	618	25	characterized	characterize	VBN
19395	618	26	in	in	IN
19395	618	27	the	the	DT
19395	618	28	sunspot	sunspot	NN
19395	618	29	spectrum	spectrum	NN
19395	618	30	by	by	IN
19395	618	31	fluted	fluted	JJ
19395	618	32	bands	band	NNS
19395	618	33	,	,	,
19395	618	34	made	make	VBN
19395	618	35	up	up	RP
19395	618	36	of	of	IN
19395	618	37	hundreds	hundred	NNS
19395	618	38	of	of	IN
19395	618	39	regularly	regularly	RB
19395	618	40	spaced	space	VBN
19395	618	41	lines	line	NNS
19395	618	42	.	.	.
19395	619	1	Similarly	similarly	RB
19395	619	2	magnesium	magnesium	NN
19395	619	3	and	and	CC
19395	619	4	hydrogen	hydrogen	NN
19395	619	5	combine	combine	VBP
19395	619	6	as	as	IN
19395	619	7	magnesium	magnesium	NN
19395	619	8	hydride	hydride	NN
19395	619	9	and	and	CC
19395	619	10	calcium	calcium	NN
19395	619	11	and	and	CC
19395	619	12	hydrogen	hydrogen	NN
19395	619	13	form	form	NNP
19395	619	14	calcium	calcium	NN
19395	619	15	hydride	hydride	NN
19395	619	16	.	.	.
19395	620	1	None	none	NN
19395	620	2	of	of	IN
19395	620	3	these	these	DT
19395	620	4	compounds	compound	NNS
19395	620	5	,	,	,
19395	620	6	stable	stable	JJ
19395	620	7	at	at	IN
19395	620	8	the	the	DT
19395	620	9	high	high	JJ
19395	620	10	temperatures	temperature	NNS
19395	620	11	of	of	IN
19395	620	12	sun	sun	NN
19395	620	13	-	-	HYPH
19395	620	14	spots	spot	NNS
19395	620	15	,	,	,
19395	620	16	has	have	VBZ
19395	620	17	been	be	VBN
19395	620	18	much	much	RB
19395	620	19	studied	study	VBN
19395	620	20	in	in	IN
19395	620	21	the	the	DT
19395	620	22	laboratory	laboratory	NN
19395	620	23	.	.	.
19395	621	1	The	the	DT
19395	621	2	regions	region	NNS
19395	621	3	in	in	IN
19395	621	4	which	which	WDT
19395	621	5	they	-PRON-	PRP
19395	621	6	exist	exist	VBP
19395	621	7	,	,	,
19395	621	8	though	though	IN
19395	621	9	cooler	cooler	NN
19395	621	10	than	than	IN
19395	621	11	the	the	DT
19395	621	12	general	general	JJ
19395	621	13	atmosphere	atmosphere	NN
19395	621	14	of	of	IN
19395	621	15	the	the	DT
19395	621	16	sun	sun	NN
19395	621	17	,	,	,
19395	621	18	are	be	VBP
19395	621	19	at	at	IN
19395	621	20	temperatures	temperature	NNS
19395	621	21	of	of	IN
19395	621	22	several	several	JJ
19395	621	23	thousand	thousand	CD
19395	621	24	degrees	degree	NNS
19395	621	25	,	,	,
19395	621	26	attained	attain	VBN
19395	621	27	in	in	IN
19395	621	28	our	-PRON-	PRP$
19395	621	29	laboratories	laboratory	NNS
19395	621	30	only	only	RB
19395	621	31	with	with	IN
19395	621	32	the	the	DT
19395	621	33	aid	aid	NN
19395	621	34	of	of	IN
19395	621	35	such	such	JJ
19395	621	36	devices	device	NNS
19395	621	37	as	as	IN
19395	621	38	powerful	powerful	JJ
19395	621	39	electric	electric	JJ
19395	621	40	furnaces	furnace	NNS
19395	621	41	.	.	.
19395	622	1	[	[	-LRB-
19395	622	2	Illustration	illustration	NN
19395	622	3	:	:	:
19395	622	4	Fig	Fig	NNP
19395	622	5	.	.	.
19395	623	1	34	34	CD
19395	623	2	.	.	.
19395	624	1	Splitting	splitting	NN
19395	624	2	of	of	IN
19395	624	3	spectrum	spectrum	NN
19395	624	4	lines	line	NNS
19395	624	5	by	by	IN
19395	624	6	a	a	DT
19395	624	7	magnetic	magnetic	JJ
19395	624	8	field	field	NN
19395	624	9	(	(	-LRB-
19395	624	10	Babcock	Babcock	NNP
19395	624	11	)	)	-RRB-
19395	624	12	.	.	.
19395	625	1	The	the	DT
19395	625	2	upper	upper	JJ
19395	625	3	and	and	CC
19395	625	4	lower	low	JJR
19395	625	5	strips	strip	NNS
19395	625	6	show	show	VBP
19395	625	7	lines	line	NNS
19395	625	8	in	in	IN
19395	625	9	the	the	DT
19395	625	10	spectrum	spectrum	NN
19395	625	11	of	of	IN
19395	625	12	chromium	chromium	NN
19395	625	13	,	,	,
19395	625	14	observed	observe	VBN
19395	625	15	without	without	IN
19395	625	16	a	a	DT
19395	625	17	magnetic	magnetic	JJ
19395	625	18	field	field	NN
19395	625	19	.	.	.
19395	626	1	When	when	WRB
19395	626	2	subjected	subject	VBN
19395	626	3	to	to	IN
19395	626	4	the	the	DT
19395	626	5	influence	influence	NN
19395	626	6	of	of	IN
19395	626	7	magnetism	magnetism	NN
19395	626	8	,	,	,
19395	626	9	these	these	DT
19395	626	10	single	single	JJ
19395	626	11	lines	line	NNS
19395	626	12	are	be	VBP
19395	626	13	split	split	VBN
19395	626	14	into	into	IN
19395	626	15	several	several	JJ
19395	626	16	components	component	NNS
19395	626	17	.	.	.
19395	627	1	Thus	thus	RB
19395	627	2	the	the	DT
19395	627	3	first	first	JJ
19395	627	4	line	line	NN
19395	627	5	on	on	IN
19395	627	6	the	the	DT
19395	627	7	right	right	NN
19395	627	8	is	be	VBZ
19395	627	9	resolved	resolve	VBN
19395	627	10	by	by	IN
19395	627	11	the	the	DT
19395	627	12	field	field	NN
19395	627	13	into	into	IN
19395	627	14	three	three	CD
19395	627	15	components	component	NNS
19395	627	16	,	,	,
19395	627	17	one	one	CD
19395	627	18	of	of	IN
19395	627	19	which	which	WDT
19395	627	20	(	(	-LRB-
19395	627	21	plane	plane	NN
19395	627	22	polarized	polarize	VBD
19395	627	23	)	)	-RRB-
19395	627	24	appears	appear	VBZ
19395	627	25	in	in	IN
19395	627	26	the	the	DT
19395	627	27	second	second	JJ
19395	627	28	strip	strip	NN
19395	627	29	,	,	,
19395	627	30	while	while	IN
19395	627	31	the	the	DT
19395	627	32	other	other	JJ
19395	627	33	two	two	CD
19395	627	34	,	,	,
19395	627	35	which	which	WDT
19395	627	36	are	be	VBP
19395	627	37	polarized	polarize	VBN
19395	627	38	in	in	IN
19395	627	39	a	a	DT
19395	627	40	plane	plane	NN
19395	627	41	at	at	IN
19395	627	42	right	right	JJ
19395	627	43	angles	angle	NNS
19395	627	44	to	to	IN
19395	627	45	that	that	DT
19395	627	46	of	of	IN
19395	627	47	the	the	DT
19395	627	48	middle	middle	NNP
19395	627	49	component	component	NN
19395	627	50	,	,	,
19395	627	51	are	be	VBP
19395	627	52	shown	show	VBN
19395	627	53	on	on	IN
19395	627	54	the	the	DT
19395	627	55	third	third	JJ
19395	627	56	strip	strip	NN
19395	627	57	.	.	.
19395	628	1	The	the	DT
19395	628	2	next	next	JJ
19395	628	3	line	line	NN
19395	628	4	is	be	VBZ
19395	628	5	split	split	VBN
19395	628	6	by	by	IN
19395	628	7	the	the	DT
19395	628	8	magnetic	magnetic	JJ
19395	628	9	field	field	NN
19395	628	10	into	into	IN
19395	628	11	twelve	twelve	CD
19395	628	12	components	component	NNS
19395	628	13	,	,	,
19395	628	14	four	four	CD
19395	628	15	of	of	IN
19395	628	16	which	which	WDT
19395	628	17	appear	appear	VBP
19395	628	18	in	in	IN
19395	628	19	the	the	DT
19395	628	20	second	second	JJ
19395	628	21	strip	strip	NN
19395	628	22	and	and	CC
19395	628	23	eight	eight	CD
19395	628	24	in	in	IN
19395	628	25	the	the	DT
19395	628	26	third	third	NN
19395	628	27	.	.	.
19395	629	1	The	the	DT
19395	629	2	magnetic	magnetic	JJ
19395	629	3	fields	field	NNS
19395	629	4	in	in	IN
19395	629	5	sun	sun	NN
19395	629	6	-	-	HYPH
19395	629	7	spots	spot	NNS
19395	629	8	affect	affect	VBP
19395	629	9	these	these	DT
19395	629	10	lines	line	NNS
19395	629	11	in	in	IN
19395	629	12	precisely	precisely	RB
19395	629	13	the	the	DT
19395	629	14	same	same	JJ
19395	629	15	way	way	NN
19395	629	16	.	.	.
19395	629	17	]	]	-RRB-
19395	630	1	It	-PRON-	PRP
19395	630	2	is	be	VBZ
19395	630	3	interesting	interesting	JJ
19395	630	4	to	to	TO
19395	630	5	follow	follow	VB
19395	630	6	our	-PRON-	PRP$
19395	630	7	line	line	NN
19395	630	8	of	of	IN
19395	630	9	reasoning	reason	VBG
19395	630	10	to	to	IN
19395	630	11	the	the	DT
19395	630	12	stars	star	NNS
19395	630	13	,	,	,
19395	630	14	which	which	WDT
19395	630	15	differ	differ	VBP
19395	630	16	widely	widely	RB
19395	630	17	in	in	IN
19395	630	18	temperature	temperature	NN
19395	630	19	at	at	IN
19395	630	20	various	various	JJ
19395	630	21	stages	stage	NNS
19395	630	22	in	in	IN
19395	630	23	their	-PRON-	PRP$
19395	630	24	life	life	NN
19395	630	25	-	-	HYPH
19395	630	26	cycle	cycle	NN
19395	630	27	.	.	.
19395	631	1	[	[	-LRB-
19395	631	2	*	*	NFP
19395	631	3	]	]	-RRB-
19395	631	4	A	a	DT
19395	631	5	sun	sun	NN
19395	631	6	-	-	HYPH
19395	631	7	spot	spot	NN
19395	631	8	is	be	VBZ
19395	631	9	a	a	DT
19395	631	10	solar	solar	JJ
19395	631	11	tornado	tornado	NN
19395	631	12	,	,	,
19395	631	13	wherein	wherein	WRB
19395	631	14	the	the	DT
19395	631	15	intensely	intensely	RB
19395	631	16	hot	hot	JJ
19395	631	17	solar	solar	JJ
19395	631	18	vapors	vapor	NNS
19395	631	19	are	be	VBP
19395	631	20	cooled	cool	VBN
19395	631	21	by	by	IN
19395	631	22	expansion	expansion	NN
19395	631	23	,	,	,
19395	631	24	giving	give	VBG
19395	631	25	rise	rise	NN
19395	631	26	to	to	IN
19395	631	27	the	the	DT
19395	631	28	compounds	compound	NNS
19395	631	29	already	already	RB
19395	631	30	named	name	VBN
19395	631	31	.	.	.
19395	632	1	A	a	DT
19395	632	2	red	red	JJ
19395	632	3	star	star	NN
19395	632	4	,	,	,
19395	632	5	in	in	IN
19395	632	6	Russell	Russell	NNP
19395	632	7	's	's	POS
19395	632	8	scheme	scheme	NN
19395	632	9	of	of	IN
19395	632	10	stellar	stellar	JJ
19395	632	11	evolution	evolution	NN
19395	632	12	,	,	,
19395	632	13	is	be	VBZ
19395	632	14	a	a	DT
19395	632	15	cooler	cooler	NN
19395	632	16	sun	sun	NN
19395	632	17	,	,	,
19395	632	18	vast	vast	JJ
19395	632	19	in	in	IN
19395	632	20	volume	volume	NN
19395	632	21	and	and	CC
19395	632	22	far	far	RB
19395	632	23	more	more	RBR
19395	632	24	tenuous	tenuous	JJ
19395	632	25	than	than	IN
19395	632	26	atmospheric	atmospheric	JJ
19395	632	27	air	air	NN
19395	632	28	when	when	WRB
19395	632	29	in	in	IN
19395	632	30	the	the	DT
19395	632	31	initial	initial	JJ
19395	632	32	period	period	NN
19395	632	33	of	of	IN
19395	632	34	the	the	DT
19395	632	35	"	"	``
19395	632	36	giant	giant	JJ
19395	632	37	"	"	''
19395	632	38	stage	stage	NN
19395	632	39	,	,	,
19395	632	40	but	but	CC
19395	632	41	compressed	compressed	JJ
19395	632	42	and	and	CC
19395	632	43	denser	denser	NN
19395	632	44	than	than	IN
19395	632	45	water	water	NN
19395	632	46	in	in	IN
19395	632	47	the	the	DT
19395	632	48	"	"	``
19395	632	49	dwarf	dwarf	NN
19395	632	50	"	"	''
19395	632	51	stage	stage	NN
19395	632	52	,	,	,
19395	632	53	into	into	IN
19395	632	54	which	which	WDT
19395	632	55	our	-PRON-	PRP$
19395	632	56	sun	sun	NN
19395	632	57	has	have	VBZ
19395	632	58	already	already	RB
19395	632	59	entered	enter	VBN
19395	632	60	as	as	IN
19395	632	61	it	-PRON-	PRP
19395	632	62	gradually	gradually	RB
19395	632	63	approaches	approach	VBZ
19395	632	64	the	the	DT
19395	632	65	last	last	JJ
19395	632	66	phases	phase	NNS
19395	632	67	of	of	IN
19395	632	68	its	-PRON-	PRP$
19395	632	69	existence	existence	NN
19395	632	70	.	.	.
19395	633	1	Therefore	therefore	RB
19395	633	2	we	-PRON-	PRP
19395	633	3	should	should	MD
19395	633	4	find	find	VB
19395	633	5	,	,	,
19395	633	6	throughout	throughout	IN
19395	633	7	the	the	DT
19395	633	8	entire	entire	JJ
19395	633	9	atmosphere	atmosphere	NN
19395	633	10	of	of	IN
19395	633	11	such	such	JJ
19395	633	12	stars	star	NNS
19395	633	13	,	,	,
19395	633	14	some	some	DT
19395	633	15	of	of	IN
19395	633	16	the	the	DT
19395	633	17	same	same	JJ
19395	633	18	compounds	compound	NNS
19395	633	19	that	that	WDT
19395	633	20	are	be	VBP
19395	633	21	produced	produce	VBN
19395	633	22	within	within	IN
19395	633	23	the	the	DT
19395	633	24	comparatively	comparatively	RB
19395	633	25	small	small	JJ
19395	633	26	limits	limit	NNS
19395	633	27	of	of	IN
19395	633	28	a	a	DT
19395	633	29	sun	sun	NN
19395	633	30	-	-	HYPH
19395	633	31	spot	spot	NN
19395	633	32	.	.	.
19395	634	1	This	this	DT
19395	634	2	,	,	,
19395	634	3	of	of	IN
19395	634	4	course	course	NN
19395	634	5	,	,	,
19395	634	6	on	on	IN
19395	634	7	the	the	DT
19395	634	8	correct	correct	JJ
19395	634	9	assumption	assumption	NN
19395	634	10	that	that	IN
19395	634	11	sun	sun	NN
19395	634	12	and	and	CC
19395	634	13	stars	star	NNS
19395	634	14	are	be	VBP
19395	634	15	made	make	VBN
19395	634	16	of	of	IN
19395	634	17	the	the	DT
19395	634	18	same	same	JJ
19395	634	19	substances	substance	NNS
19395	634	20	.	.	.
19395	635	1	Fowler	Fowler	NNP
19395	635	2	has	have	VBZ
19395	635	3	already	already	RB
19395	635	4	identified	identify	VBN
19395	635	5	the	the	DT
19395	635	6	bands	band	NNS
19395	635	7	of	of	IN
19395	635	8	titanium	titanium	NN
19395	635	9	oxide	oxide	NN
19395	635	10	in	in	IN
19395	635	11	such	such	JJ
19395	635	12	red	red	JJ
19395	635	13	stars	star	NNS
19395	635	14	as	as	IN
19395	635	15	the	the	DT
19395	635	16	giant	giant	NN
19395	635	17	Betelgeuse	Betelgeuse	NNP
19395	635	18	,	,	,
19395	635	19	and	and	CC
19395	635	20	in	in	IN
19395	635	21	others	other	NNS
19395	635	22	of	of	IN
19395	635	23	its	-PRON-	PRP$
19395	635	24	class	class	NN
19395	635	25	.	.	.
19395	636	1	It	-PRON-	PRP
19395	636	2	is	be	VBZ
19395	636	3	safe	safe	JJ
19395	636	4	to	to	TO
19395	636	5	predict	predict	VB
19395	636	6	that	that	IN
19395	636	7	an	an	DT
19395	636	8	interesting	interesting	JJ
19395	636	9	chapter	chapter	NN
19395	636	10	in	in	IN
19395	636	11	the	the	DT
19395	636	12	chemistry	chemistry	NN
19395	636	13	of	of	IN
19395	636	14	the	the	DT
19395	636	15	future	future	NN
19395	636	16	will	will	MD
19395	636	17	be	be	VB
19395	636	18	based	base	VBN
19395	636	19	upon	upon	IN
19395	636	20	the	the	DT
19395	636	21	study	study	NN
19395	636	22	of	of	IN
19395	636	23	such	such	JJ
19395	636	24	compounds	compound	NNS
19395	636	25	,	,	,
19395	636	26	both	both	CC
19395	636	27	in	in	IN
19395	636	28	the	the	DT
19395	636	29	laboratory	laboratory	NN
19395	636	30	and	and	CC
19395	636	31	under	under	IN
19395	636	32	the	the	DT
19395	636	33	progressive	progressive	JJ
19395	636	34	temperature	temperature	NN
19395	636	35	conditions	condition	NNS
19395	636	36	afforded	afford	VBN
19395	636	37	by	by	IN
19395	636	38	the	the	DT
19395	636	39	countless	countless	JJ
19395	636	40	stellar	stellar	JJ
19395	636	41	"	"	``
19395	636	42	giants	giant	NNS
19395	636	43	"	"	''
19395	636	44	and	and	CC
19395	636	45	"	"	``
19395	636	46	dwarfs	dwarf	VBZ
19395	636	47	"	"	''
19395	636	48	that	that	WDT
19395	636	49	precede	precede	VBP
19395	636	50	and	and	CC
19395	636	51	follow	follow	VB
19395	636	52	the	the	DT
19395	636	53	solar	solar	JJ
19395	636	54	state	state	NN
19395	636	55	.	.	.
19395	637	1	[	[	-LRB-
19395	637	2	Footnote	footnote	NN
19395	637	3	*	*	NFP
19395	637	4	:	:	:
19395	637	5	See	see	VB
19395	637	6	Chapter	Chapter	NNP
19395	637	7	II	II	NNP
19395	637	8	.	.	.
19395	637	9	]	]	-RRB-
19395	638	1	[	[	-LRB-
19395	638	2	Illustration	illustration	NN
19395	638	3	:	:	:
19395	638	4	Fig	Fig	NNP
19395	638	5	.	.	.
19395	639	1	35	35	CD
19395	639	2	.	.	.
19395	640	1	Electric	electric	JJ
19395	640	2	furnace	furnace	NN
19395	640	3	in	in	IN
19395	640	4	the	the	DT
19395	640	5	Pasadena	Pasadena	NNP
19395	640	6	laboratory	laboratory	NN
19395	640	7	of	of	IN
19395	640	8	the	the	DT
19395	640	9	Mount	Mount	NNP
19395	640	10	Wilson	Wilson	NNP
19395	640	11	Observatory	Observatory	NNP
19395	640	12	.	.	.
19395	641	1	With	with	IN
19395	641	2	which	which	WDT
19395	641	3	the	the	DT
19395	641	4	chemical	chemical	NN
19395	641	5	phenomena	phenomenon	NNS
19395	641	6	observed	observe	VBN
19395	641	7	in	in	IN
19395	641	8	sun	sun	NN
19395	641	9	-	-	HYPH
19395	641	10	spots	spot	NNS
19395	641	11	and	and	CC
19395	641	12	red	red	JJ
19395	641	13	stars	star	NNS
19395	641	14	are	be	VBP
19395	641	15	experimentally	experimentally	RB
19395	641	16	imitated	imitate	VBN
19395	641	17	.	.	.
19395	641	18	]	]	-RRB-
19395	642	1	ASTROPHYSICAL	ASTROPHYSICAL	NNP
19395	642	2	LABORATORIES	laboratorie	VBZ
19395	642	3	It	-PRON-	PRP
19395	642	4	is	be	VBZ
19395	642	5	precisely	precisely	RB
19395	642	6	in	in	IN
19395	642	7	this	this	DT
19395	642	8	long	long	JJ
19395	642	9	sequence	sequence	NN
19395	642	10	of	of	IN
19395	642	11	physical	physical	JJ
19395	642	12	and	and	CC
19395	642	13	chemical	chemical	NN
19395	642	14	changes	change	NNS
19395	642	15	that	that	IN
19395	642	16	the	the	DT
19395	642	17	astrophysicist	astrophysicist	NN
19395	642	18	and	and	CC
19395	642	19	the	the	DT
19395	642	20	astrochemist	astrochemist	NN
19395	642	21	can	can	MD
19395	642	22	find	find	VB
19395	642	23	the	the	DT
19395	642	24	means	mean	NNS
19395	642	25	of	of	IN
19395	642	26	pushing	push	VBG
19395	642	27	home	home	RB
19395	642	28	their	-PRON-	PRP$
19395	642	29	attack	attack	NN
19395	642	30	.	.	.
19395	643	1	It	-PRON-	PRP
19395	643	2	is	be	VBZ
19395	643	3	true	true	JJ
19395	643	4	,	,	,
19395	643	5	of	of	IN
19395	643	6	course	course	NN
19395	643	7	,	,	,
19395	643	8	that	that	IN
19395	643	9	the	the	DT
19395	643	10	laboratory	laboratory	NN
19395	643	11	investigator	investigator	NN
19395	643	12	has	have	VBZ
19395	643	13	a	a	DT
19395	643	14	great	great	JJ
19395	643	15	advantage	advantage	NN
19395	643	16	in	in	IN
19395	643	17	his	-PRON-	PRP$
19395	643	18	ability	ability	NN
19395	643	19	to	to	TO
19395	643	20	control	control	VB
19395	643	21	his	-PRON-	PRP$
19395	643	22	experiments	experiment	NNS
19395	643	23	,	,	,
19395	643	24	and	and	CC
19395	643	25	to	to	TO
19395	643	26	vary	vary	VB
19395	643	27	their	-PRON-	PRP$
19395	643	28	progress	progress	NN
19395	643	29	at	at	IN
19395	643	30	will	will	NN
19395	643	31	.	.	.
19395	644	1	But	but	CC
19395	644	2	by	by	IN
19395	644	3	judicious	judicious	JJ
19395	644	4	use	use	NN
19395	644	5	of	of	IN
19395	644	6	the	the	DT
19395	644	7	transcendental	transcendental	JJ
19395	644	8	temperatures	temperature	NNS
19395	644	9	,	,	,
19395	644	10	far	far	RB
19395	644	11	out	out	IN
19395	644	12	ranging	range	VBG
19395	644	13	those	those	DT
19395	644	14	of	of	IN
19395	644	15	his	-PRON-	PRP$
19395	644	16	furnaces	furnace	NNS
19395	644	17	,	,	,
19395	644	18	and	and	CC
19395	644	19	extreme	extreme	JJ
19395	644	20	conditions	condition	NNS
19395	644	21	,	,	,
19395	644	22	which	which	WDT
19395	644	23	he	-PRON-	PRP
19395	644	24	can	can	MD
19395	644	25	only	only	RB
19395	644	26	partially	partially	RB
19395	644	27	imitate	imitate	VB
19395	644	28	,	,	,
19395	644	29	afforded	afford	VBN
19395	644	30	by	by	IN
19395	644	31	the	the	DT
19395	644	32	sun	sun	NN
19395	644	33	,	,	,
19395	644	34	stars	star	NNS
19395	644	35	,	,	,
19395	644	36	and	and	CC
19395	644	37	nebulæ	nebulæ	NN
19395	644	38	,	,	,
19395	644	39	he	-PRON-	PRP
19395	644	40	may	may	MD
19395	644	41	greatly	greatly	RB
19395	644	42	widen	widen	VB
19395	644	43	the	the	DT
19395	644	44	range	range	NN
19395	644	45	of	of	IN
19395	644	46	his	-PRON-	PRP$
19395	644	47	inquiries	inquiry	NNS
19395	644	48	.	.	.
19395	645	1	The	the	DT
19395	645	2	sequence	sequence	NN
19395	645	3	of	of	IN
19395	645	4	phenomena	phenomenon	NNS
19395	645	5	seen	see	VBN
19395	645	6	during	during	IN
19395	645	7	the	the	DT
19395	645	8	growth	growth	NN
19395	645	9	of	of	IN
19395	645	10	a	a	DT
19395	645	11	sun	sun	NN
19395	645	12	-	-	HYPH
19395	645	13	spot	spot	NN
19395	645	14	,	,	,
19395	645	15	or	or	CC
19395	645	16	the	the	DT
19395	645	17	observation	observation	NN
19395	645	18	of	of	IN
19395	645	19	spots	spot	NNS
19395	645	20	of	of	IN
19395	645	21	different	different	JJ
19395	645	22	sizes	size	NNS
19395	645	23	,	,	,
19395	645	24	and	and	CC
19395	645	25	the	the	DT
19395	645	26	long	long	JJ
19395	645	27	series	series	NN
19395	645	28	of	of	IN
19395	645	29	successive	successive	JJ
19395	645	30	steps	step	NNS
19395	645	31	that	that	WDT
19395	645	32	mark	mark	VBP
19395	645	33	the	the	DT
19395	645	34	rise	rise	NN
19395	645	35	and	and	CC
19395	645	36	decay	decay	NN
19395	645	37	of	of	IN
19395	645	38	stellar	stellar	JJ
19395	645	39	life	life	NN
19395	645	40	,	,	,
19395	645	41	resemble	resemble	VB
19395	645	42	the	the	DT
19395	645	43	changes	change	NNS
19395	645	44	that	that	WDT
19395	645	45	the	the	DT
19395	645	46	experimenter	experimenter	NN
19395	645	47	brings	bring	VBZ
19395	645	48	about	about	RP
19395	645	49	as	as	IN
19395	645	50	he	-PRON-	PRP
19395	645	51	increases	increase	VBZ
19395	645	52	and	and	CC
19395	645	53	diminishes	diminish	VBZ
19395	645	54	the	the	DT
19395	645	55	current	current	NN
19395	645	56	in	in	IN
19395	645	57	the	the	DT
19395	645	58	coils	coil	NNS
19395	645	59	of	of	IN
19395	645	60	his	-PRON-	PRP$
19395	645	61	magnet	magnet	NN
19395	645	62	or	or	CC
19395	645	63	raises	raise	VBZ
19395	645	64	and	and	CC
19395	645	65	lowers	lower	VBZ
19395	645	66	the	the	DT
19395	645	67	temperature	temperature	NN
19395	645	68	of	of	IN
19395	645	69	his	-PRON-	PRP$
19395	645	70	electric	electric	JJ
19395	645	71	furnace	furnace	NN
19395	645	72	,	,	,
19395	645	73	examining	examine	VBG
19395	645	74	from	from	IN
19395	645	75	time	time	NN
19395	645	76	to	to	IN
19395	645	77	time	time	NN
19395	645	78	the	the	DT
19395	645	79	spectrum	spectrum	NN
19395	645	80	of	of	IN
19395	645	81	the	the	DT
19395	645	82	glowing	glowing	JJ
19395	645	83	vapors	vapor	NNS
19395	645	84	,	,	,
19395	645	85	and	and	CC
19395	645	86	noting	note	VBG
19395	645	87	the	the	DT
19395	645	88	changes	change	NNS
19395	645	89	shown	show	VBN
19395	645	90	by	by	IN
19395	645	91	the	the	DT
19395	645	92	varying	vary	VBG
19395	645	93	appearance	appearance	NN
19395	645	94	of	of	IN
19395	645	95	their	-PRON-	PRP$
19395	645	96	lines	line	NNS
19395	645	97	.	.	.
19395	646	1	[	[	-LRB-
19395	646	2	Illustration	illustration	NN
19395	646	3	:	:	:
19395	646	4	Fig	Fig	NNP
19395	646	5	.	.	.
19395	647	1	36	36	CD
19395	647	2	.	.	.
19395	648	1	Titanium	titanium	NN
19395	648	2	oxide	oxide	NN
19395	648	3	in	in	IN
19395	648	4	red	red	JJ
19395	648	5	stars	star	NNS
19395	648	6	.	.	.
19395	649	1	The	the	DT
19395	649	2	upper	upper	JJ
19395	649	3	spectrum	spectrum	NN
19395	649	4	is	be	VBZ
19395	649	5	that	that	DT
19395	649	6	of	of	IN
19395	649	7	titanium	titanium	NN
19395	649	8	in	in	IN
19395	649	9	the	the	DT
19395	649	10	flame	flame	NN
19395	649	11	of	of	IN
19395	649	12	the	the	DT
19395	649	13	electric	electric	JJ
19395	649	14	arc	arc	NN
19395	649	15	,	,	,
19395	649	16	where	where	WRB
19395	649	17	its	-PRON-	PRP$
19395	649	18	combination	combination	NN
19395	649	19	with	with	IN
19395	649	20	oxygen	oxygen	NN
19395	649	21	gives	give	VBZ
19395	649	22	rise	rise	NN
19395	649	23	to	to	IN
19395	649	24	the	the	DT
19395	649	25	bands	band	NNS
19395	649	26	of	of	IN
19395	649	27	titanium	titanium	NN
19395	649	28	oxide	oxide	NN
19395	649	29	(	(	-LRB-
19395	649	30	Fowler	Fowler	NNP
19395	649	31	)	)	-RRB-
19395	649	32	.	.	.
19395	650	1	The	the	DT
19395	650	2	lower	low	JJR
19395	650	3	strip	strip	NN
19395	650	4	shows	show	VBZ
19395	650	5	the	the	DT
19395	650	6	spectrum	spectrum	NN
19395	650	7	of	of	IN
19395	650	8	the	the	DT
19395	650	9	red	red	JJ
19395	650	10	star	star	NN
19395	650	11	Mira	Mira	NNP
19395	650	12	(	(	-LRB-
19395	650	13	Omicron	Omicron	NNP
19395	650	14	Ceti	Ceti	NNP
19395	650	15	)	)	-RRB-
19395	650	16	,	,	,
19395	650	17	as	as	IN
19395	650	18	drawn	draw	VBN
19395	650	19	by	by	IN
19395	650	20	Cortie	Cortie	NNP
19395	650	21	at	at	IN
19395	650	22	Stonyhurst	Stonyhurst	NNP
19395	650	23	.	.	.
19395	651	1	The	the	DT
19395	651	2	bands	band	NNS
19395	651	3	of	of	IN
19395	651	4	titanium	titanium	NN
19395	651	5	oxide	oxide	NN
19395	651	6	are	be	VBP
19395	651	7	clearly	clearly	RB
19395	651	8	present	present	JJ
19395	651	9	in	in	IN
19395	651	10	the	the	DT
19395	651	11	star	star	NN
19395	651	12	.	.	.
19395	651	13	]	]	-RRB-
19395	652	1	[	[	-LRB-
19395	652	2	Illustration	illustration	NN
19395	652	3	:	:	:
19395	652	4	Fig	Fig	NNP
19395	652	5	.	.	.
19395	653	1	37	37	CD
19395	653	2	.	.	.
19395	654	1	Titanium	titanium	NN
19395	654	2	oxide	oxide	NN
19395	654	3	in	in	IN
19395	654	4	sun	sun	NN
19395	654	5	-	-	HYPH
19395	654	6	spots	spot	NNS
19395	654	7	.	.	.
19395	655	1	The	the	DT
19395	655	2	upper	upper	JJ
19395	655	3	strip	strip	NN
19395	655	4	shows	show	VBZ
19395	655	5	a	a	DT
19395	655	6	portion	portion	NN
19395	655	7	of	of	IN
19395	655	8	the	the	DT
19395	655	9	spectrum	spectrum	NN
19395	655	10	of	of	IN
19395	655	11	a	a	DT
19395	655	12	sun	sun	NN
19395	655	13	-	-	HYPH
19395	655	14	spot	spot	NN
19395	655	15	(	(	-LRB-
19395	655	16	Ellerman	Ellerman	NNP
19395	655	17	)	)	-RRB-
19395	655	18	;	;	:
19395	655	19	the	the	DT
19395	655	20	lower	low	JJR
19395	655	21	one	one	CD
19395	655	22	the	the	DT
19395	655	23	corresponding	corresponding	JJ
19395	655	24	region	region	NN
19395	655	25	of	of	IN
19395	655	26	the	the	DT
19395	655	27	spectrum	spectrum	NN
19395	655	28	of	of	IN
19395	655	29	titanium	titanium	NN
19395	655	30	oxide	oxide	NN
19395	655	31	(	(	-LRB-
19395	655	32	King	King	NNP
19395	655	33	)	)	-RRB-
19395	655	34	.	.	.
19395	656	1	The	the	DT
19395	656	2	fluted	fluted	JJ
19395	656	3	bands	band	NNS
19395	656	4	of	of	IN
19395	656	5	the	the	DT
19395	656	6	oxide	oxide	NN
19395	656	7	spectrum	spectrum	NN
19395	656	8	are	be	VBP
19395	656	9	easily	easily	RB
19395	656	10	identified	identify	VBN
19395	656	11	in	in	IN
19395	656	12	the	the	DT
19395	656	13	spot	spot	NN
19395	656	14	,	,	,
19395	656	15	where	where	WRB
19395	656	16	they	-PRON-	PRP
19395	656	17	indicate	indicate	VBP
19395	656	18	that	that	DT
19395	656	19	titanium	titanium	NN
19395	656	20	and	and	CC
19395	656	21	oxygen	oxygen	NN
19395	656	22	,	,	,
19395	656	23	too	too	RB
19395	656	24	hot	hot	JJ
19395	656	25	to	to	TO
19395	656	26	combine	combine	VB
19395	656	27	in	in	IN
19395	656	28	the	the	DT
19395	656	29	solar	solar	JJ
19395	656	30	atmosphere	atmosphere	NN
19395	656	31	,	,	,
19395	656	32	unite	unite	VB
19395	656	33	in	in	IN
19395	656	34	the	the	DT
19395	656	35	spot	spot	NN
19395	656	36	because	because	IN
19395	656	37	of	of	IN
19395	656	38	the	the	DT
19395	656	39	cooling	cooling	NN
19395	656	40	produced	produce	VBN
19395	656	41	by	by	IN
19395	656	42	expansion	expansion	NN
19395	656	43	in	in	IN
19395	656	44	the	the	DT
19395	656	45	vortex	vortex	NN
19395	656	46	.	.	.
19395	656	47	]	]	-RRB-
19395	657	1	Astronomical	astronomical	JJ
19395	657	2	observations	observation	NNS
19395	657	3	of	of	IN
19395	657	4	this	this	DT
19395	657	5	character	character	NN
19395	657	6	,	,	,
19395	657	7	it	-PRON-	PRP
19395	657	8	should	should	MD
19395	657	9	be	be	VB
19395	657	10	noted	note	VBN
19395	657	11	,	,	,
19395	657	12	are	be	VBP
19395	657	13	most	most	RBS
19395	657	14	effective	effective	JJ
19395	657	15	when	when	WRB
19395	657	16	constantly	constantly	RB
19395	657	17	tested	test	VBN
19395	657	18	and	and	CC
19395	657	19	interpreted	interpret	VBN
19395	657	20	by	by	IN
19395	657	21	laboratory	laboratory	NN
19395	657	22	experiment	experiment	NN
19395	657	23	.	.	.
19395	658	1	Indeed	indeed	RB
19395	658	2	,	,	,
19395	658	3	a	a	DT
19395	658	4	modern	modern	JJ
19395	658	5	astrophysical	astrophysical	JJ
19395	658	6	observatory	observatory	NN
19395	658	7	should	should	MD
19395	658	8	be	be	VB
19395	658	9	equipped	equip	VBN
19395	658	10	like	like	IN
19395	658	11	a	a	DT
19395	658	12	great	great	JJ
19395	658	13	physical	physical	JJ
19395	658	14	laboratory	laboratory	NN
19395	658	15	,	,	,
19395	658	16	provided	provide	VBN
19395	658	17	on	on	IN
19395	658	18	the	the	DT
19395	658	19	one	one	CD
19395	658	20	hand	hand	NN
19395	658	21	with	with	IN
19395	658	22	telescopes	telescope	NNS
19395	658	23	and	and	CC
19395	658	24	accessory	accessory	JJ
19395	658	25	apparatus	apparatus	NN
19395	658	26	of	of	IN
19395	658	27	the	the	DT
19395	658	28	greatest	great	JJS
19395	658	29	attainable	attainable	JJ
19395	658	30	power	power	NN
19395	658	31	,	,	,
19395	658	32	and	and	CC
19395	658	33	on	on	IN
19395	658	34	the	the	DT
19395	658	35	other	other	JJ
19395	658	36	with	with	IN
19395	658	37	every	every	DT
19395	658	38	device	device	NN
19395	658	39	known	know	VBN
19395	658	40	to	to	IN
19395	658	41	the	the	DT
19395	658	42	investigator	investigator	NN
19395	658	43	of	of	IN
19395	658	44	radiation	radiation	NN
19395	658	45	and	and	CC
19395	658	46	the	the	DT
19395	658	47	related	related	JJ
19395	658	48	physical	physical	JJ
19395	658	49	and	and	CC
19395	658	50	chemical	chemical	JJ
19395	658	51	phenomena	phenomenon	NNS
19395	658	52	.	.	.
19395	659	1	Its	-PRON-	PRP$
19395	659	2	telescopes	telescope	NNS
19395	659	3	,	,	,
19395	659	4	especially	especially	RB
19395	659	5	designed	design	VBN
19395	659	6	with	with	IN
19395	659	7	the	the	DT
19395	659	8	aims	aim	NNS
19395	659	9	of	of	IN
19395	659	10	the	the	DT
19395	659	11	physicist	physicist	NN
19395	659	12	and	and	CC
19395	659	13	chemist	chemist	NN
19395	659	14	in	in	IN
19395	659	15	view	view	NN
19395	659	16	,	,	,
19395	659	17	bring	bring	VB
19395	659	18	images	image	NNS
19395	659	19	of	of	IN
19395	659	20	sun	sun	NN
19395	659	21	,	,	,
19395	659	22	stars	star	NNS
19395	659	23	,	,	,
19395	659	24	nebulæ	nebulæ	NN
19395	659	25	,	,	,
19395	659	26	and	and	CC
19395	659	27	other	other	JJ
19395	659	28	heavenly	heavenly	JJ
19395	659	29	bodies	body	NNS
19395	659	30	within	within	IN
19395	659	31	the	the	DT
19395	659	32	reach	reach	NN
19395	659	33	of	of	IN
19395	659	34	powerful	powerful	JJ
19395	659	35	spectroscopes	spectroscope	NNS
19395	659	36	,	,	,
19395	659	37	sensitive	sensitive	JJ
19395	659	38	bolometers	bolometer	NNS
19395	659	39	and	and	CC
19395	659	40	thermopiles	thermopiles	NNP
19395	659	41	,	,	,
19395	659	42	and	and	CC
19395	659	43	the	the	DT
19395	659	44	long	long	JJ
19395	659	45	array	array	NN
19395	659	46	of	of	IN
19395	659	47	other	other	JJ
19395	659	48	appliances	appliance	NNS
19395	659	49	available	available	JJ
19395	659	50	for	for	IN
19395	659	51	the	the	DT
19395	659	52	measurement	measurement	NN
19395	659	53	and	and	CC
19395	659	54	analysis	analysis	NN
19395	659	55	of	of	IN
19395	659	56	radiation	radiation	NN
19395	659	57	.	.	.
19395	660	1	Its	-PRON-	PRP$
19395	660	2	electric	electric	JJ
19395	660	3	furnaces	furnace	NNS
19395	660	4	,	,	,
19395	660	5	arcs	arc	NNS
19395	660	6	,	,	,
19395	660	7	sparks	spark	NNS
19395	660	8	,	,	,
19395	660	9	and	and	CC
19395	660	10	vacuum	vacuum	NN
19395	660	11	tubes	tube	NNS
19395	660	12	,	,	,
19395	660	13	its	-PRON-	PRP$
19395	660	14	apparatus	apparatus	NN
19395	660	15	for	for	IN
19395	660	16	increasing	increase	VBG
19395	660	17	and	and	CC
19395	660	18	decreasing	decrease	VBG
19395	660	19	pressure	pressure	NN
19395	660	20	,	,	,
19395	660	21	varying	vary	VBG
19395	660	22	chemical	chemical	NN
19395	660	23	conditions	condition	NNS
19395	660	24	,	,	,
19395	660	25	and	and	CC
19395	660	26	subjecting	subject	VBG
19395	660	27	luminous	luminous	JJ
19395	660	28	gases	gas	NNS
19395	660	29	and	and	CC
19395	660	30	vapors	vapor	NNS
19395	660	31	to	to	IN
19395	660	32	the	the	DT
19395	660	33	influence	influence	NN
19395	660	34	of	of	IN
19395	660	35	electric	electric	JJ
19395	660	36	and	and	CC
19395	660	37	magnetic	magnetic	JJ
19395	660	38	fields	field	NNS
19395	660	39	,	,	,
19395	660	40	provide	provide	VB
19395	660	41	the	the	DT
19395	660	42	means	mean	NNS
19395	660	43	of	of	IN
19395	660	44	imitating	imitate	VBG
19395	660	45	celestial	celestial	JJ
19395	660	46	phenomena	phenomenon	NNS
19395	660	47	,	,	,
19395	660	48	and	and	CC
19395	660	49	of	of	IN
19395	660	50	repeating	repeat	VBG
19395	660	51	and	and	CC
19395	660	52	interpreting	interpret	VBG
19395	660	53	the	the	DT
19395	660	54	experiments	experiment	NNS
19395	660	55	observed	observe	VBN
19395	660	56	at	at	IN
19395	660	57	the	the	DT
19395	660	58	telescope	telescope	NN
19395	660	59	.	.	.
19395	661	1	And	and	CC
19395	661	2	the	the	DT
19395	661	3	advantage	advantage	NN
19395	661	4	thus	thus	RB
19395	661	5	derived	derive	VBD
19395	661	6	,	,	,
19395	661	7	as	as	IN
19395	661	8	we	-PRON-	PRP
19395	661	9	have	have	VBP
19395	661	10	seen	see	VBN
19395	661	11	,	,	,
19395	661	12	is	be	VBZ
19395	661	13	not	not	RB
19395	661	14	confined	confine	VBN
19395	661	15	to	to	IN
19395	661	16	the	the	DT
19395	661	17	astronomer	astronomer	NN
19395	661	18	,	,	,
19395	661	19	who	who	WP
19395	661	20	has	have	VBZ
19395	661	21	often	often	RB
19395	661	22	been	be	VBN
19395	661	23	able	able	JJ
19395	661	24	,	,	,
19395	661	25	by	by	IN
19395	661	26	making	make	VBG
19395	661	27	fundamental	fundamental	JJ
19395	661	28	physical	physical	JJ
19395	661	29	and	and	CC
19395	661	30	chemical	chemical	JJ
19395	661	31	discoveries	discovery	NNS
19395	661	32	,	,	,
19395	661	33	to	to	TO
19395	661	34	repay	repay	VB
19395	661	35	his	-PRON-	PRP$
19395	661	36	debt	debt	NN
19395	661	37	to	to	IN
19395	661	38	the	the	DT
19395	661	39	physicist	physicist	NN
19395	661	40	and	and	CC
19395	661	41	chemist	chemist	NN
19395	661	42	for	for	IN
19395	661	43	the	the	DT
19395	661	44	apparatus	apparatus	NN
19395	661	45	and	and	CC
19395	661	46	methods	method	NNS
19395	661	47	which	which	WDT
19395	661	48	he	-PRON-	PRP
19395	661	49	owes	owe	VBZ
19395	661	50	to	to	IN
19395	661	51	them	-PRON-	PRP
19395	661	52	.	.	.
19395	662	1	NEWTON	NEWTON	NNP
19395	662	2	AND	and	CC
19395	662	3	EINSTEIN	EINSTEIN	NNS
19395	662	4	Take	take	VBP
19395	662	5	,	,	,
19395	662	6	for	for	IN
19395	662	7	another	another	DT
19395	662	8	example	example	NN
19395	662	9	,	,	,
19395	662	10	the	the	DT
19395	662	11	greatest	great	JJS
19395	662	12	law	law	NN
19395	662	13	of	of	IN
19395	662	14	physics	physics	NN
19395	662	15	--	--	:
19395	662	16	Newton	Newton	NNP
19395	662	17	's	's	POS
19395	662	18	law	law	NN
19395	662	19	of	of	IN
19395	662	20	gravitation	gravitation	NN
19395	662	21	.	.	.
19395	663	1	Huge	huge	JJ
19395	663	2	balls	ball	NNS
19395	663	3	of	of	IN
19395	663	4	lead	lead	NN
19395	663	5	,	,	,
19395	663	6	as	as	IN
19395	663	7	used	use	VBN
19395	663	8	by	by	IN
19395	663	9	Cavendish	Cavendish	NNP
19395	663	10	,	,	,
19395	663	11	produce	produce	VBP
19395	663	12	by	by	IN
19395	663	13	their	-PRON-	PRP$
19395	663	14	gravitational	gravitational	JJ
19395	663	15	effect	effect	NN
19395	663	16	a	a	DT
19395	663	17	minute	minute	JJ
19395	663	18	rotation	rotation	NN
19395	663	19	of	of	IN
19395	663	20	a	a	DT
19395	663	21	delicately	delicately	RB
19395	663	22	suspended	suspend	VBN
19395	663	23	bar	bar	NN
19395	663	24	,	,	,
19395	663	25	carrying	carry	VBG
19395	663	26	smaller	small	JJR
19395	663	27	balls	ball	NNS
19395	663	28	at	at	IN
19395	663	29	its	-PRON-	PRP$
19395	663	30	extremities	extremity	NNS
19395	663	31	.	.	.
19395	664	1	But	but	CC
19395	664	2	no	no	DT
19395	664	3	such	such	JJ
19395	664	4	feeble	feeble	JJ
19395	664	5	means	mean	NNS
19395	664	6	sufficed	suffice	VBN
19395	664	7	for	for	IN
19395	664	8	Newton	Newton	NNP
19395	664	9	's	's	POS
19395	664	10	purpose	purpose	NN
19395	664	11	.	.	.
19395	665	1	To	to	TO
19395	665	2	prove	prove	VB
19395	665	3	the	the	DT
19395	665	4	law	law	NN
19395	665	5	of	of	IN
19395	665	6	gravitation	gravitation	NN
19395	665	7	he	-PRON-	PRP
19395	665	8	had	have	VBD
19395	665	9	recourse	recourse	JJ
19395	665	10	to	to	IN
19395	665	11	the	the	DT
19395	665	12	tremendous	tremendous	JJ
19395	665	13	pull	pull	NN
19395	665	14	on	on	IN
19395	665	15	the	the	DT
19395	665	16	moon	moon	NN
19395	665	17	of	of	IN
19395	665	18	the	the	DT
19395	665	19	entire	entire	JJ
19395	665	20	mass	mass	NN
19395	665	21	of	of	IN
19395	665	22	the	the	DT
19395	665	23	earth	earth	NN
19395	665	24	,	,	,
19395	665	25	and	and	CC
19395	665	26	then	then	RB
19395	665	27	extended	extend	VBD
19395	665	28	his	-PRON-	PRP$
19395	665	29	researches	research	NNS
19395	665	30	to	to	IN
19395	665	31	the	the	DT
19395	665	32	mutual	mutual	JJ
19395	665	33	attractions	attraction	NNS
19395	665	34	of	of	IN
19395	665	35	all	all	PDT
19395	665	36	the	the	DT
19395	665	37	bodies	body	NNS
19395	665	38	of	of	IN
19395	665	39	the	the	DT
19395	665	40	solar	solar	JJ
19395	665	41	system	system	NN
19395	665	42	.	.	.
19395	666	1	Later	later	RBR
19395	666	2	Herschel	Herschel	NNP
19395	666	3	applied	apply	VBD
19395	666	4	this	this	DT
19395	666	5	law	law	NN
19395	666	6	to	to	IN
19395	666	7	the	the	DT
19395	666	8	suns	sun	NNS
19395	666	9	which	which	WDT
19395	666	10	constitute	constitute	VBP
19395	666	11	double	double	JJ
19395	666	12	stars	star	NNS
19395	666	13	,	,	,
19395	666	14	and	and	CC
19395	666	15	to	to	IN
19395	666	16	-	-	HYPH
19395	666	17	day	day	NN
19395	666	18	Adams	Adams	NNP
19395	666	19	observes	observe	VBZ
19395	666	20	from	from	IN
19395	666	21	Mount	Mount	NNP
19395	666	22	Wilson	Wilson	NNP
19395	666	23	stars	star	NNS
19395	666	24	falling	fall	VBG
19395	666	25	with	with	IN
19395	666	26	great	great	JJ
19395	666	27	velocity	velocity	NN
19395	666	28	toward	toward	IN
19395	666	29	the	the	DT
19395	666	30	centre	centre	NN
19395	666	31	of	of	IN
19395	666	32	the	the	DT
19395	666	33	galactic	galactic	JJ
19395	666	34	system	system	NN
19395	666	35	under	under	IN
19395	666	36	the	the	DT
19395	666	37	combined	combined	JJ
19395	666	38	pull	pull	NN
19395	666	39	of	of	IN
19395	666	40	the	the	DT
19395	666	41	millions	million	NNS
19395	666	42	of	of	IN
19395	666	43	objects	object	NNS
19395	666	44	that	that	WDT
19395	666	45	compose	compose	VBP
19395	666	46	it	-PRON-	PRP
19395	666	47	.	.	.
19395	667	1	Thus	thus	RB
19395	667	2	full	full	JJ
19395	667	3	advantage	advantage	NN
19395	667	4	has	have	VBZ
19395	667	5	been	be	VBN
19395	667	6	taken	take	VBN
19395	667	7	of	of	IN
19395	667	8	the	the	DT
19395	667	9	possibility	possibility	NN
19395	667	10	of	of	IN
19395	667	11	utilizing	utilize	VBG
19395	667	12	the	the	DT
19395	667	13	great	great	JJ
19395	667	14	masses	masse	NNS
19395	667	15	of	of	IN
19395	667	16	the	the	DT
19395	667	17	heavenly	heavenly	JJ
19395	667	18	bodies	body	NNS
19395	667	19	for	for	IN
19395	667	20	the	the	DT
19395	667	21	discovery	discovery	NN
19395	667	22	and	and	CC
19395	667	23	application	application	NN
19395	667	24	of	of	IN
19395	667	25	a	a	DT
19395	667	26	law	law	NN
19395	667	27	of	of	IN
19395	667	28	physics	physics	NN
19395	667	29	and	and	CC
19395	667	30	its	-PRON-	PRP$
19395	667	31	reciprocal	reciprocal	JJ
19395	667	32	use	use	NN
19395	667	33	in	in	IN
19395	667	34	explaining	explain	VBG
19395	667	35	celestial	celestial	JJ
19395	667	36	motions	motion	NNS
19395	667	37	.	.	.
19395	668	1	[	[	-LRB-
19395	668	2	Illustration	illustration	NN
19395	668	3	:	:	:
19395	668	4	Fig	Fig	NNP
19395	668	5	.	.	.
19395	669	1	38	38	CD
19395	669	2	.	.	.
19395	670	1	The	the	DT
19395	670	2	Cavendish	cavendish	JJ
19395	670	3	experiment	experiment	NN
19395	670	4	.	.	.
19395	671	1	Two	two	CD
19395	671	2	lead	lead	JJ
19395	671	3	balls	ball	NNS
19395	671	4	,	,	,
19395	671	5	each	each	DT
19395	671	6	two	two	CD
19395	671	7	inches	inch	NNS
19395	671	8	in	in	IN
19395	671	9	diameter	diameter	NN
19395	671	10	,	,	,
19395	671	11	are	be	VBP
19395	671	12	attached	attach	VBN
19395	671	13	to	to	IN
19395	671	14	the	the	DT
19395	671	15	ends	end	NNS
19395	671	16	of	of	IN
19395	671	17	a	a	DT
19395	671	18	torsion	torsion	NN
19395	671	19	rod	rod	NN
19395	671	20	six	six	CD
19395	671	21	feet	foot	NNS
19395	671	22	long	long	JJ
19395	671	23	,	,	,
19395	671	24	which	which	WDT
19395	671	25	is	be	VBZ
19395	671	26	suspended	suspend	VBN
19395	671	27	by	by	IN
19395	671	28	a	a	DT
19395	671	29	fine	fine	JJ
19395	671	30	wire	wire	NN
19395	671	31	.	.	.
19395	672	1	The	the	DT
19395	672	2	experiment	experiment	NN
19395	672	3	consists	consist	VBZ
19395	672	4	in	in	IN
19395	672	5	measuring	measure	VBG
19395	672	6	the	the	DT
19395	672	7	rotation	rotation	NN
19395	672	8	of	of	IN
19395	672	9	the	the	DT
19395	672	10	suspended	suspend	VBN
19395	672	11	system	system	NN
19395	672	12	,	,	,
19395	672	13	caused	cause	VBN
19395	672	14	by	by	IN
19395	672	15	the	the	DT
19395	672	16	gravitational	gravitational	JJ
19395	672	17	attraction	attraction	NN
19395	672	18	of	of	IN
19395	672	19	two	two	CD
19395	672	20	lead	lead	JJ
19395	672	21	spheres	sphere	NNS
19395	672	22	,	,	,
19395	672	23	each	each	DT
19395	672	24	twelve	twelve	CD
19395	672	25	inches	inch	NNS
19395	672	26	in	in	IN
19395	672	27	diameter	diameter	NN
19395	672	28	,	,	,
19395	672	29	acting	act	VBG
19395	672	30	on	on	IN
19395	672	31	the	the	DT
19395	672	32	two	two	CD
19395	672	33	small	small	JJ
19395	672	34	lead	lead	NN
19395	672	35	balls	ball	NNS
19395	672	36	.	.	.
19395	672	37	]	]	-RRB-
19395	673	1	Or	or	CC
19395	673	2	consider	consider	VB
19395	673	3	the	the	DT
19395	673	4	Einstein	Einstein	NNP
19395	673	5	theory	theory	NN
19395	673	6	of	of	IN
19395	673	7	relativity	relativity	NN
19395	673	8	,	,	,
19395	673	9	the	the	DT
19395	673	10	truth	truth	NN
19395	673	11	or	or	CC
19395	673	12	falsity	falsity	NN
19395	673	13	of	of	IN
19395	673	14	which	which	WDT
19395	673	15	is	be	VBZ
19395	673	16	no	no	DT
19395	673	17	less	less	RBR
19395	673	18	fundamental	fundamental	JJ
19395	673	19	to	to	IN
19395	673	20	physics	physics	NN
19395	673	21	.	.	.
19395	674	1	Its	-PRON-	PRP$
19395	674	2	inception	inception	NN
19395	674	3	sprang	spring	VBD
19395	674	4	from	from	IN
19395	674	5	the	the	DT
19395	674	6	Michelson	Michelson	NNP
19395	674	7	-	-	HYPH
19395	674	8	Morley	Morley	NNP
19395	674	9	experiment	experiment	NN
19395	674	10	,	,	,
19395	674	11	made	make	VBN
19395	674	12	in	in	IN
19395	674	13	a	a	DT
19395	674	14	laboratory	laboratory	NN
19395	674	15	in	in	IN
19395	674	16	Cleveland	Cleveland	NNP
19395	674	17	,	,	,
19395	674	18	which	which	WDT
19395	674	19	showed	show	VBD
19395	674	20	that	that	IN
19395	674	21	motion	motion	NN
19395	674	22	of	of	IN
19395	674	23	the	the	DT
19395	674	24	earth	earth	NN
19395	674	25	through	through	IN
19395	674	26	the	the	DT
19395	674	27	ether	ether	NN
19395	674	28	of	of	IN
19395	674	29	space	space	NN
19395	674	30	could	could	MD
19395	674	31	not	not	RB
19395	674	32	be	be	VB
19395	674	33	detected	detect	VBN
19395	674	34	.	.	.
19395	675	1	All	all	DT
19395	675	2	of	of	IN
19395	675	3	the	the	DT
19395	675	4	three	three	CD
19395	675	5	chief	chief	JJ
19395	675	6	tests	test	NNS
19395	675	7	of	of	IN
19395	675	8	Einstein	Einstein	NNP
19395	675	9	's	's	POS
19395	675	10	general	general	JJ
19395	675	11	theory	theory	NN
19395	675	12	are	be	VBP
19395	675	13	astronomical	astronomical	JJ
19395	675	14	--	--	:
19395	675	15	because	because	IN
19395	675	16	of	of	IN
19395	675	17	the	the	DT
19395	675	18	great	great	JJ
19395	675	19	masses	masse	NNS
19395	675	20	required	require	VBN
19395	675	21	to	to	TO
19395	675	22	produce	produce	VB
19395	675	23	the	the	DT
19395	675	24	minute	minute	NN
19395	675	25	effects	effect	NNS
19395	675	26	predicted	predict	VBD
19395	675	27	:	:	:
19395	675	28	the	the	DT
19395	675	29	motion	motion	NN
19395	675	30	of	of	IN
19395	675	31	the	the	DT
19395	675	32	perihelion	perihelion	NN
19395	675	33	of	of	IN
19395	675	34	Mercury	Mercury	NNP
19395	675	35	,	,	,
19395	675	36	the	the	DT
19395	675	37	deflection	deflection	NN
19395	675	38	of	of	IN
19395	675	39	the	the	DT
19395	675	40	light	light	NN
19395	675	41	of	of	IN
19395	675	42	a	a	DT
19395	675	43	star	star	NN
19395	675	44	by	by	IN
19395	675	45	the	the	DT
19395	675	46	attraction	attraction	NN
19395	675	47	of	of	IN
19395	675	48	the	the	DT
19395	675	49	sun	sun	NN
19395	675	50	,	,	,
19395	675	51	and	and	CC
19395	675	52	the	the	DT
19395	675	53	shift	shift	NN
19395	675	54	of	of	IN
19395	675	55	the	the	DT
19395	675	56	lines	line	NNS
19395	675	57	of	of	IN
19395	675	58	the	the	DT
19395	675	59	solar	solar	JJ
19395	675	60	spectrum	spectrum	NN
19395	675	61	toward	toward	IN
19395	675	62	the	the	DT
19395	675	63	red	red	JJ
19395	675	64	--	--	:
19395	675	65	questions	question	NNS
19395	675	66	not	not	RB
19395	675	67	yet	yet	RB
19395	675	68	completely	completely	RB
19395	675	69	answered	answer	VBN
19395	675	70	.	.	.
19395	676	1	But	but	CC
19395	676	2	it	-PRON-	PRP
19395	676	3	is	be	VBZ
19395	676	4	in	in	IN
19395	676	5	the	the	DT
19395	676	6	study	study	NN
19395	676	7	of	of	IN
19395	676	8	the	the	DT
19395	676	9	constitution	constitution	NN
19395	676	10	of	of	IN
19395	676	11	matter	matter	NN
19395	676	12	and	and	CC
19395	676	13	the	the	DT
19395	676	14	evolution	evolution	NN
19395	676	15	of	of	IN
19395	676	16	the	the	DT
19395	676	17	elements	element	NNS
19395	676	18	,	,	,
19395	676	19	the	the	DT
19395	676	20	deepest	deep	JJS
19395	676	21	and	and	CC
19395	676	22	most	most	RBS
19395	676	23	critical	critical	JJ
19395	676	24	problem	problem	NN
19395	676	25	of	of	IN
19395	676	26	physics	physics	NN
19395	676	27	and	and	CC
19395	676	28	chemistry	chemistry	NN
19395	676	29	,	,	,
19395	676	30	that	that	IN
19395	676	31	the	the	DT
19395	676	32	extremes	extreme	NNS
19395	676	33	of	of	IN
19395	676	34	pressure	pressure	NN
19395	676	35	and	and	CC
19395	676	36	temperature	temperature	NN
19395	676	37	in	in	IN
19395	676	38	the	the	DT
19395	676	39	heavenly	heavenly	JJ
19395	676	40	bodies	body	NNS
19395	676	41	,	,	,
19395	676	42	and	and	CC
19395	676	43	the	the	DT
19395	676	44	prevalence	prevalence	NN
19395	676	45	of	of	IN
19395	676	46	other	other	JJ
19395	676	47	physical	physical	JJ
19395	676	48	conditions	condition	NNS
19395	676	49	not	not	RB
19395	676	50	yet	yet	RB
19395	676	51	successfully	successfully	RB
19395	676	52	imitated	imitate	VBN
19395	676	53	on	on	IN
19395	676	54	earth	earth	NN
19395	676	55	,	,	,
19395	676	56	promise	promise	VB
19395	676	57	the	the	DT
19395	676	58	greatest	great	JJS
19395	676	59	progress	progress	NN
19395	676	60	.	.	.
19395	677	1	It	-PRON-	PRP
19395	677	2	fortunately	fortunately	RB
19395	677	3	happens	happen	VBZ
19395	677	4	that	that	IN
19395	677	5	astrophysical	astrophysical	JJ
19395	677	6	research	research	NN
19395	677	7	is	be	VBZ
19395	677	8	now	now	RB
19395	677	9	at	at	IN
19395	677	10	the	the	DT
19395	677	11	very	very	JJ
19395	677	12	apex	apex	NN
19395	677	13	of	of	IN
19395	677	14	its	-PRON-	PRP$
19395	677	15	development	development	NN
19395	677	16	,	,	,
19395	677	17	founded	found	VBN
19395	677	18	as	as	IN
19395	677	19	it	-PRON-	PRP
19395	677	20	is	be	VBZ
19395	677	21	upon	upon	IN
19395	677	22	many	many	JJ
19395	677	23	centuries	century	NNS
19395	677	24	of	of	IN
19395	677	25	astronomical	astronomical	JJ
19395	677	26	investigation	investigation	NN
19395	677	27	,	,	,
19395	677	28	rejuvenated	rejuvenate	VBN
19395	677	29	by	by	IN
19395	677	30	the	the	DT
19395	677	31	introduction	introduction	NN
19395	677	32	into	into	IN
19395	677	33	the	the	DT
19395	677	34	observatory	observatory	NN
19395	677	35	of	of	IN
19395	677	36	all	all	PDT
19395	677	37	the	the	DT
19395	677	38	modern	modern	JJ
19395	677	39	devices	device	NNS
19395	677	40	of	of	IN
19395	677	41	the	the	DT
19395	677	42	physicist	physicist	NN
19395	677	43	,	,	,
19395	677	44	and	and	CC
19395	677	45	strengthened	strengthen	VBD
19395	677	46	with	with	IN
19395	677	47	instruments	instrument	NNS
19395	677	48	of	of	IN
19395	677	49	truly	truly	RB
19395	677	50	extraordinary	extraordinary	JJ
19395	677	51	range	range	NN
19395	677	52	and	and	CC
19395	677	53	power	power	NN
19395	677	54	.	.	.
19395	678	1	These	these	DT
19395	678	2	instruments	instrument	NNS
19395	678	3	bring	bring	VBP
19395	678	4	within	within	IN
19395	678	5	reach	reach	NN
19395	678	6	experiments	experiment	NNS
19395	678	7	that	that	WDT
19395	678	8	are	be	VBP
19395	678	9	in	in	IN
19395	678	10	progress	progress	NN
19395	678	11	on	on	IN
19395	678	12	some	some	DT
19395	678	13	minute	minute	JJ
19395	678	14	region	region	NN
19395	678	15	of	of	IN
19395	678	16	the	the	DT
19395	678	17	sun	sun	NN
19395	678	18	's	's	POS
19395	678	19	disk	disk	NN
19395	678	20	,	,	,
19395	678	21	or	or	CC
19395	678	22	in	in	IN
19395	678	23	some	some	DT
19395	678	24	star	star	NN
19395	678	25	too	too	RB
19395	678	26	distant	distant	JJ
19395	678	27	even	even	RB
19395	678	28	to	to	TO
19395	678	29	be	be	VB
19395	678	30	glimpsed	glimpse	VBN
19395	678	31	with	with	IN
19395	678	32	ordinary	ordinary	JJ
19395	678	33	telescopes	telescope	NNS
19395	678	34	.	.	.
19395	679	1	Indeed	indeed	RB
19395	679	2	,	,	,
19395	679	3	the	the	DT
19395	679	4	huge	huge	JJ
19395	679	5	astronomical	astronomical	JJ
19395	679	6	lenses	lense	NNS
19395	679	7	and	and	CC
19395	679	8	mirrors	mirror	NNS
19395	679	9	now	now	RB
19395	679	10	available	available	JJ
19395	679	11	serve	serve	VB
19395	679	12	for	for	IN
19395	679	13	these	these	DT
19395	679	14	remote	remote	JJ
19395	679	15	light	light	NN
19395	679	16	-	-	HYPH
19395	679	17	sources	source	NNS
19395	679	18	exactly	exactly	RB
19395	679	19	the	the	DT
19395	679	20	purpose	purpose	NN
19395	679	21	of	of	IN
19395	679	22	the	the	DT
19395	679	23	lens	lens	NN
19395	679	24	or	or	CC
19395	679	25	mirror	mirror	NN
19395	679	26	employed	employ	VBN
19395	679	27	by	by	IN
19395	679	28	the	the	DT
19395	679	29	physicist	physicist	NN
19395	679	30	to	to	TO
19395	679	31	project	project	VB
19395	679	32	upon	upon	IN
19395	679	33	the	the	DT
19395	679	34	slit	slit	NN
19395	679	35	of	of	IN
19395	679	36	his	-PRON-	PRP$
19395	679	37	spectroscope	spectroscope	NN
19395	679	38	the	the	DT
19395	679	39	image	image	NN
19395	679	40	of	of	IN
19395	679	41	a	a	DT
19395	679	42	spark	spark	NN
19395	679	43	or	or	CC
19395	679	44	arc	arc	NN
19395	679	45	or	or	CC
19395	679	46	vacuum	vacuum	NN
19395	679	47	tube	tube	NN
19395	679	48	within	within	IN
19395	679	49	which	which	WDT
19395	679	50	atoms	atom	NNS
19395	679	51	and	and	CC
19395	679	52	molecules	molecule	NNS
19395	679	53	are	be	VBP
19395	679	54	exposed	expose	VBN
19395	679	55	to	to	IN
19395	679	56	the	the	DT
19395	679	57	influence	influence	NN
19395	679	58	of	of	IN
19395	679	59	the	the	DT
19395	679	60	electric	electric	JJ
19395	679	61	discharge	discharge	NN
19395	679	62	.	.	.
19395	680	1	The	the	DT
19395	680	2	physicist	physicist	NN
19395	680	3	has	have	VBZ
19395	680	4	the	the	DT
19395	680	5	advantage	advantage	NN
19395	680	6	of	of	IN
19395	680	7	complete	complete	JJ
19395	680	8	control	control	NN
19395	680	9	over	over	IN
19395	680	10	the	the	DT
19395	680	11	experimental	experimental	JJ
19395	680	12	conditions	condition	NNS
19395	680	13	,	,	,
19395	680	14	while	while	IN
19395	680	15	the	the	DT
19395	680	16	astrophysicist	astrophysicist	NN
19395	680	17	must	must	MD
19395	680	18	observe	observe	VB
19395	680	19	and	and	CC
19395	680	20	interpret	interpret	VB
19395	680	21	the	the	DT
19395	680	22	experiments	experiment	NNS
19395	680	23	performed	perform	VBN
19395	680	24	for	for	IN
19395	680	25	him	-PRON-	PRP
19395	680	26	in	in	IN
19395	680	27	remote	remote	JJ
19395	680	28	laboratories	laboratory	NNS
19395	680	29	.	.	.
19395	681	1	In	in	IN
19395	681	2	actual	actual	JJ
19395	681	3	practice	practice	NN
19395	681	4	,	,	,
19395	681	5	the	the	DT
19395	681	6	two	two	CD
19395	681	7	classes	class	NNS
19395	681	8	of	of	IN
19395	681	9	work	work	NN
19395	681	10	must	must	MD
19395	681	11	be	be	VB
19395	681	12	done	do	VBN
19395	681	13	in	in	IN
19395	681	14	the	the	DT
19395	681	15	closest	close	JJS
19395	681	16	conjunction	conjunction	NN
19395	681	17	,	,	,
19395	681	18	if	if	IN
19395	681	19	adequate	adequate	JJ
19395	681	20	utilization	utilization	NN
19395	681	21	is	be	VBZ
19395	681	22	to	to	TO
19395	681	23	be	be	VB
19395	681	24	made	make	VBN
19395	681	25	of	of	IN
19395	681	26	either	either	DT
19395	681	27	.	.	.
19395	682	1	And	and	CC
19395	682	2	this	this	DT
19395	682	3	is	be	VBZ
19395	682	4	only	only	RB
19395	682	5	natural	natural	JJ
19395	682	6	,	,	,
19395	682	7	for	for	IN
19395	682	8	the	the	DT
19395	682	9	trend	trend	NN
19395	682	10	of	of	IN
19395	682	11	recent	recent	JJ
19395	682	12	research	research	NN
19395	682	13	has	have	VBZ
19395	682	14	made	make	VBN
19395	682	15	clear	clear	JJ
19395	682	16	the	the	DT
19395	682	17	fact	fact	NN
19395	682	18	that	that	IN
19395	682	19	one	one	CD
19395	682	20	of	of	IN
19395	682	21	the	the	DT
19395	682	22	three	three	CD
19395	682	23	greatest	great	JJS
19395	682	24	problems	problem	NNS
19395	682	25	of	of	IN
19395	682	26	modern	modern	JJ
19395	682	27	astronomy	astronomy	NN
19395	682	28	and	and	CC
19395	682	29	astrophysics	astrophysic	NNS
19395	682	30	,	,	,
19395	682	31	ranking	rank	VBG
19395	682	32	with	with	IN
19395	682	33	the	the	DT
19395	682	34	structure	structure	NN
19395	682	35	of	of	IN
19395	682	36	the	the	DT
19395	682	37	universe	universe	NN
19395	682	38	and	and	CC
19395	682	39	the	the	DT
19395	682	40	evolution	evolution	NN
19395	682	41	of	of	IN
19395	682	42	celestial	celestial	JJ
19395	682	43	bodies	body	NNS
19395	682	44	,	,	,
19395	682	45	is	be	VBZ
19395	682	46	the	the	DT
19395	682	47	constitution	constitution	NN
19395	682	48	of	of	IN
19395	682	49	matter	matter	NN
19395	682	50	.	.	.
19395	683	1	Let	let	VB
19395	683	2	us	-PRON-	PRP
19395	683	3	see	see	VB
19395	683	4	why	why	WRB
19395	683	5	this	this	DT
19395	683	6	is	be	VBZ
19395	683	7	so	so	RB
19395	683	8	.	.	.
19395	684	1	TRANSMUTATION	transmutation	NN
19395	684	2	OF	of	IN
19395	684	3	THE	the	DT
19395	684	4	ELEMENTS	elements	NN
19395	684	5	The	the	DT
19395	684	6	dream	dream	NN
19395	684	7	of	of	IN
19395	684	8	the	the	DT
19395	684	9	alchemist	alchemist	NN
19395	684	10	was	be	VBD
19395	684	11	to	to	TO
19395	684	12	transmute	transmute	VB
19395	684	13	one	one	CD
19395	684	14	element	element	NN
19395	684	15	into	into	IN
19395	684	16	another	another	DT
19395	684	17	,	,	,
19395	684	18	with	with	IN
19395	684	19	the	the	DT
19395	684	20	prime	prime	JJ
19395	684	21	object	object	NN
19395	684	22	of	of	IN
19395	684	23	producing	produce	VBG
19395	684	24	gold	gold	NN
19395	684	25	.	.	.
19395	685	1	Such	such	JJ
19395	685	2	transmutation	transmutation	NN
19395	685	3	has	have	VBZ
19395	685	4	been	be	VBN
19395	685	5	actually	actually	RB
19395	685	6	accomplished	accomplish	VBN
19395	685	7	within	within	IN
19395	685	8	the	the	DT
19395	685	9	last	last	JJ
19395	685	10	few	few	JJ
19395	685	11	years	year	NNS
19395	685	12	,	,	,
19395	685	13	but	but	CC
19395	685	14	the	the	DT
19395	685	15	process	process	NN
19395	685	16	is	be	VBZ
19395	685	17	invariably	invariably	RB
19395	685	18	one	one	CD
19395	685	19	of	of	IN
19395	685	20	disintegration	disintegration	NN
19395	685	21	--	--	:
19395	685	22	the	the	DT
19395	685	23	more	more	RBR
19395	685	24	complex	complex	JJ
19395	685	25	elements	element	NNS
19395	685	26	being	be	VBG
19395	685	27	broken	break	VBN
19395	685	28	up	up	RP
19395	685	29	into	into	IN
19395	685	30	simpler	simple	JJR
19395	685	31	constituents	constituent	NNS
19395	685	32	.	.	.
19395	686	1	Much	much	JJ
19395	686	2	remains	remain	VBZ
19395	686	3	to	to	TO
19395	686	4	be	be	VB
19395	686	5	done	do	VBN
19395	686	6	in	in	IN
19395	686	7	this	this	DT
19395	686	8	same	same	JJ
19395	686	9	direction	direction	NN
19395	686	10	;	;	:
19395	686	11	and	and	CC
19395	686	12	here	here	RB
19395	686	13	the	the	DT
19395	686	14	stars	star	NNS
19395	686	15	and	and	CC
19395	686	16	nebulæ	nebulæ	NN
19395	686	17	,	,	,
19395	686	18	which	which	WDT
19395	686	19	show	show	VBP
19395	686	20	the	the	DT
19395	686	21	spectra	spectra	NN
19395	686	22	of	of	IN
19395	686	23	the	the	DT
19395	686	24	elements	element	NNS
19395	686	25	under	under	IN
19395	686	26	a	a	DT
19395	686	27	great	great	JJ
19395	686	28	variety	variety	NN
19395	686	29	of	of	IN
19395	686	30	conditions	condition	NNS
19395	686	31	,	,	,
19395	686	32	should	should	MD
19395	686	33	help	help	VB
19395	686	34	to	to	TO
19395	686	35	point	point	VB
19395	686	36	the	the	DT
19395	686	37	way	way	NN
19395	686	38	.	.	.
19395	687	1	The	the	DT
19395	687	2	progressive	progressive	JJ
19395	687	3	changes	change	NNS
19395	687	4	in	in	IN
19395	687	5	spectra	spectra	NNP
19395	687	6	,	,	,
19395	687	7	from	from	IN
19395	687	8	the	the	DT
19395	687	9	exclusive	exclusive	JJ
19395	687	10	indications	indication	NNS
19395	687	11	of	of	IN
19395	687	12	the	the	DT
19395	687	13	simple	simple	JJ
19395	687	14	elements	element	NNS
19395	687	15	hydrogen	hydrogen	NN
19395	687	16	,	,	,
19395	687	17	helium	helium	NN
19395	687	18	,	,	,
19395	687	19	nitrogen	nitrogen	NN
19395	687	20	,	,	,
19395	687	21	possibly	possibly	RB
19395	687	22	carbon	carbon	NN
19395	687	23	,	,	,
19395	687	24	and	and	CC
19395	687	25	the	the	DT
19395	687	26	terrestrially	terrestrially	RB
19395	687	27	unknown	unknown	JJ
19395	687	28	gas	gas	NN
19395	687	29	nebulium	nebulium	NN
19395	687	30	in	in	IN
19395	687	31	the	the	DT
19395	687	32	gaseous	gaseous	JJ
19395	687	33	nebulæ	nebulæ	NN
19395	687	34	,	,	,
19395	687	35	to	to	IN
19395	687	36	the	the	DT
19395	687	37	long	long	JJ
19395	687	38	list	list	NN
19395	687	39	of	of	IN
19395	687	40	familiar	familiar	JJ
19395	687	41	substances	substance	NNS
19395	687	42	,	,	,
19395	687	43	including	include	VBG
19395	687	44	several	several	JJ
19395	687	45	chemical	chemical	JJ
19395	687	46	compounds	compound	NNS
19395	687	47	,	,	,
19395	687	48	in	in	IN
19395	687	49	the	the	DT
19395	687	50	red	red	JJ
19395	687	51	stars	star	NNS
19395	687	52	,	,	,
19395	687	53	may	may	MD
19395	687	54	prove	prove	VB
19395	687	55	to	to	TO
19395	687	56	be	be	VB
19395	687	57	fundamentally	fundamentally	RB
19395	687	58	significant	significant	JJ
19395	687	59	when	when	WRB
19395	687	60	adequately	adequately	RB
19395	687	61	studied	study	VBN
19395	687	62	from	from	IN
19395	687	63	the	the	DT
19395	687	64	standpoint	standpoint	NN
19395	687	65	of	of	IN
19395	687	66	the	the	DT
19395	687	67	investigator	investigator	NN
19395	687	68	of	of	IN
19395	687	69	atomic	atomic	JJ
19395	687	70	structure	structure	NN
19395	687	71	.	.	.
19395	688	1	The	the	DT
19395	688	2	existing	exist	VBG
19395	688	3	evidence	evidence	NN
19395	688	4	seems	seem	VBZ
19395	688	5	to	to	TO
19395	688	6	favor	favor	VB
19395	688	7	the	the	DT
19395	688	8	view	view	NN
19395	688	9	,	,	,
19395	688	10	recently	recently	RB
19395	688	11	expressed	express	VBN
19395	688	12	by	by	IN
19395	688	13	Saha	Saha	NNP
19395	688	14	,	,	,
19395	688	15	that	that	IN
19395	688	16	many	many	JJ
19395	688	17	of	of	IN
19395	688	18	these	these	DT
19395	688	19	differences	difference	NNS
19395	688	20	are	be	VBP
19395	688	21	due	due	JJ
19395	688	22	to	to	IN
19395	688	23	varying	vary	VBG
19395	688	24	degrees	degree	NNS
19395	688	25	of	of	IN
19395	688	26	ionization	ionization	NN
19395	688	27	,	,	,
19395	688	28	the	the	DT
19395	688	29	outer	outer	JJ
19395	688	30	electrons	electron	NNS
19395	688	31	of	of	IN
19395	688	32	the	the	DT
19395	688	33	atoms	atom	NNS
19395	688	34	being	be	VBG
19395	688	35	split	split	VBN
19395	688	36	off	off	RP
19395	688	37	by	by	IN
19395	688	38	high	high	JJ
19395	688	39	temperature	temperature	NN
19395	688	40	or	or	CC
19395	688	41	electrical	electrical	JJ
19395	688	42	excitation	excitation	NN
19395	688	43	.	.	.
19395	689	1	It	-PRON-	PRP
19395	689	2	is	be	VBZ
19395	689	3	even	even	RB
19395	689	4	possible	possible	JJ
19395	689	5	that	that	IN
19395	689	6	cosmic	cosmic	JJ
19395	689	7	crucibles	crucible	NNS
19395	689	8	,	,	,
19395	689	9	unrivalled	unrivalle	VBN
19395	689	10	by	by	IN
19395	689	11	terrestrial	terrestrial	JJ
19395	689	12	ones	one	NNS
19395	689	13	,	,	,
19395	689	14	may	may	MD
19395	689	15	help	help	VB
19395	689	16	materially	materially	RB
19395	689	17	to	to	TO
19395	689	18	reveal	reveal	VB
19395	689	19	the	the	DT
19395	689	20	secret	secret	NN
19395	689	21	of	of	IN
19395	689	22	the	the	DT
19395	689	23	formation	formation	NN
19395	689	24	of	of	IN
19395	689	25	complex	complex	JJ
19395	689	26	elements	element	NNS
19395	689	27	from	from	IN
19395	689	28	simpler	simple	JJR
19395	689	29	ones	one	NNS
19395	689	30	.	.	.
19395	690	1	Physicists	physicist	NNS
19395	690	2	now	now	RB
19395	690	3	believe	believe	VBP
19395	690	4	that	that	IN
19395	690	5	all	all	DT
19395	690	6	of	of	IN
19395	690	7	the	the	DT
19395	690	8	elements	element	NNS
19395	690	9	are	be	VBP
19395	690	10	compounded	compound	VBN
19395	690	11	of	of	IN
19395	690	12	hydrogen	hydrogen	NN
19395	690	13	atoms	atom	NNS
19395	690	14	,	,	,
19395	690	15	bound	bind	VBN
19395	690	16	together	together	RB
19395	690	17	by	by	IN
19395	690	18	negative	negative	JJ
19395	690	19	electrons	electron	NNS
19395	690	20	.	.	.
19395	691	1	Thus	thus	RB
19395	691	2	helium	helium	NN
19395	691	3	is	be	VBZ
19395	691	4	made	make	VBN
19395	691	5	up	up	RP
19395	691	6	of	of	IN
19395	691	7	four	four	CD
19395	691	8	hydrogen	hydrogen	NN
19395	691	9	atoms	atom	NNS
19395	691	10	,	,	,
19395	691	11	yet	yet	CC
19395	691	12	the	the	DT
19395	691	13	atomic	atomic	JJ
19395	691	14	weight	weight	NN
19395	691	15	of	of	IN
19395	691	16	helium	helium	NN
19395	691	17	(	(	-LRB-
19395	691	18	4	4	CD
19395	691	19	)	)	-RRB-
19395	691	20	is	be	VBZ
19395	691	21	less	less	JJR
19395	691	22	than	than	IN
19395	691	23	four	four	CD
19395	691	24	times	time	NNS
19395	691	25	that	that	DT
19395	691	26	of	of	IN
19395	691	27	hydrogen	hydrogen	NN
19395	691	28	(	(	-LRB-
19395	691	29	1.008	1.008	CD
19395	691	30	)	)	-RRB-
19395	691	31	.	.	.
19395	692	1	The	the	DT
19395	692	2	difference	difference	NN
19395	692	3	may	may	MD
19395	692	4	represent	represent	VB
19395	692	5	the	the	DT
19395	692	6	mass	mass	NN
19395	692	7	of	of	IN
19395	692	8	the	the	DT
19395	692	9	electrical	electrical	JJ
19395	692	10	energy	energy	NN
19395	692	11	released	release	VBN
19395	692	12	when	when	WRB
19395	692	13	the	the	DT
19395	692	14	transmutation	transmutation	NN
19395	692	15	occurred	occur	VBD
19395	692	16	.	.	.
19395	693	1	[	[	-LRB-
19395	693	2	Illustration	illustration	NN
19395	693	3	:	:	:
19395	693	4	Fig	Fig	NNP
19395	693	5	.	.	.
19395	694	1	39	39	CD
19395	694	2	.	.	.
19395	695	1	The	the	DT
19395	695	2	Trifid	Trifid	NNP
19395	695	3	Nebula	Nebula	NNP
19395	695	4	in	in	IN
19395	695	5	Sagittarius	Sagittarius	NNP
19395	695	6	(	(	-LRB-
19395	695	7	Ritchey	Ritchey	NNP
19395	695	8	)	)	-RRB-
19395	695	9	.	.	.
19395	696	1	The	the	DT
19395	696	2	gas	gas	NN
19395	696	3	"	"	``
19395	696	4	nebulium	nebulium	NN
19395	696	5	,	,	,
19395	696	6	"	"	''
19395	696	7	not	not	RB
19395	696	8	yet	yet	RB
19395	696	9	found	find	VBN
19395	696	10	on	on	IN
19395	696	11	the	the	DT
19395	696	12	earth	earth	NN
19395	696	13	,	,	,
19395	696	14	is	be	VBZ
19395	696	15	the	the	DT
19395	696	16	most	most	RBS
19395	696	17	characteristic	characteristic	JJ
19395	696	18	constituent	constituent	NN
19395	696	19	of	of	IN
19395	696	20	irregular	irregular	JJ
19395	696	21	nebulæ	nebulæ	NN
19395	696	22	.	.	.
19395	697	1	Nebulium	nebulium	NN
19395	697	2	is	be	VBZ
19395	697	3	recognized	recognize	VBN
19395	697	4	by	by	IN
19395	697	5	two	two	CD
19395	697	6	green	green	JJ
19395	697	7	lines	line	NNS
19395	697	8	in	in	IN
19395	697	9	its	-PRON-	PRP$
19395	697	10	spectrum	spectrum	NN
19395	697	11	,	,	,
19395	697	12	which	which	WDT
19395	697	13	cause	cause	VBP
19395	697	14	the	the	DT
19395	697	15	green	green	JJ
19395	697	16	color	color	NN
19395	697	17	of	of	IN
19395	697	18	nebulæ	nebulæ	NN
19395	697	19	of	of	IN
19395	697	20	the	the	DT
19395	697	21	gaseous	gaseous	JJ
19395	697	22	type	type	NN
19395	697	23	.	.	.
19395	697	24	]	]	-RRB-
19395	698	1	Eddington	Eddington	NNP
19395	698	2	has	have	VBZ
19395	698	3	speculated	speculate	VBN
19395	698	4	in	in	IN
19395	698	5	a	a	DT
19395	698	6	most	most	RBS
19395	698	7	interesting	interesting	JJ
19395	698	8	way	way	NN
19395	698	9	on	on	IN
19395	698	10	this	this	DT
19395	698	11	possible	possible	JJ
19395	698	12	source	source	NN
19395	698	13	of	of	IN
19395	698	14	stellar	stellar	JJ
19395	698	15	heat	heat	NN
19395	698	16	in	in	IN
19395	698	17	his	-PRON-	PRP$
19395	698	18	recent	recent	JJ
19395	698	19	presidential	presidential	JJ
19395	698	20	address	address	NN
19395	698	21	before	before	IN
19395	698	22	the	the	DT
19395	698	23	British	British	NNP
19395	698	24	Association	Association	NNP
19395	698	25	for	for	IN
19395	698	26	the	the	DT
19395	698	27	Advancement	Advancement	NNP
19395	698	28	of	of	IN
19395	698	29	Science	Science	NNP
19395	698	30	(	(	-LRB-
19395	698	31	see	see	VB
19395	698	32	_	_	NNP
19395	698	33	Nature	Nature	NNP
19395	698	34	_	_	NNP
19395	698	35	,	,	,
19395	698	36	September	September	NNP
19395	698	37	2	2	CD
19395	698	38	,	,	,
19395	698	39	1920	1920	CD
19395	698	40	)	)	-RRB-
19395	698	41	.	.	.
19395	699	1	He	-PRON-	PRP
19395	699	2	points	point	VBZ
19395	699	3	out	out	RP
19395	699	4	that	that	IN
19395	699	5	the	the	DT
19395	699	6	old	old	JJ
19395	699	7	contraction	contraction	NN
19395	699	8	hypothesis	hypothesis	NN
19395	699	9	,	,	,
19395	699	10	according	accord	VBG
19395	699	11	to	to	IN
19395	699	12	which	which	WDT
19395	699	13	the	the	DT
19395	699	14	source	source	NN
19395	699	15	of	of	IN
19395	699	16	solar	solar	JJ
19395	699	17	and	and	CC
19395	699	18	stellar	stellar	JJ
19395	699	19	heat	heat	NN
19395	699	20	was	be	VBD
19395	699	21	supposed	suppose	VBN
19395	699	22	to	to	TO
19395	699	23	reside	reside	VB
19395	699	24	in	in	IN
19395	699	25	the	the	DT
19395	699	26	slow	slow	JJ
19395	699	27	condensation	condensation	NN
19395	699	28	of	of	IN
19395	699	29	a	a	DT
19395	699	30	radiating	radiate	VBG
19395	699	31	mass	mass	NN
19395	699	32	of	of	IN
19395	699	33	gas	gas	NN
19395	699	34	under	under	IN
19395	699	35	the	the	DT
19395	699	36	action	action	NN
19395	699	37	of	of	IN
19395	699	38	gravity	gravity	NN
19395	699	39	,	,	,
19395	699	40	is	be	VBZ
19395	699	41	wholly	wholly	RB
19395	699	42	inadequate	inadequate	JJ
19395	699	43	to	to	TO
19395	699	44	explain	explain	VB
19395	699	45	the	the	DT
19395	699	46	observed	observed	JJ
19395	699	47	phenomena	phenomenon	NNS
19395	699	48	.	.	.
19395	700	1	If	if	IN
19395	700	2	the	the	DT
19395	700	3	old	old	JJ
19395	700	4	view	view	NN
19395	700	5	were	be	VBD
19395	700	6	correct	correct	JJ
19395	700	7	,	,	,
19395	700	8	the	the	DT
19395	700	9	earlier	early	JJR
19395	700	10	history	history	NN
19395	700	11	of	of	IN
19395	700	12	a	a	DT
19395	700	13	star	star	NN
19395	700	14	,	,	,
19395	700	15	from	from	IN
19395	700	16	the	the	DT
19395	700	17	giant	giant	JJ
19395	700	18	stage	stage	NN
19395	700	19	of	of	IN
19395	700	20	a	a	DT
19395	700	21	cool	cool	JJ
19395	700	22	and	and	CC
19395	700	23	diaphanous	diaphanous	JJ
19395	700	24	gas	gas	NN
19395	700	25	to	to	IN
19395	700	26	the	the	DT
19395	700	27	period	period	NN
19395	700	28	of	of	IN
19395	700	29	highest	high	JJS
19395	700	30	temperature	temperature	NN
19395	700	31	,	,	,
19395	700	32	would	would	MD
19395	700	33	be	be	VB
19395	700	34	run	run	VBN
19395	700	35	through	through	IN
19395	700	36	within	within	IN
19395	700	37	eighty	eighty	CD
19395	700	38	thousand	thousand	CD
19395	700	39	years	year	NNS
19395	700	40	,	,	,
19395	700	41	whereas	whereas	IN
19395	700	42	we	-PRON-	PRP
19395	700	43	have	have	VBP
19395	700	44	the	the	DT
19395	700	45	best	good	JJS
19395	700	46	of	of	IN
19395	700	47	evidence	evidence	NN
19395	700	48	that	that	IN
19395	700	49	many	many	JJ
19395	700	50	thousands	thousand	NNS
19395	700	51	of	of	IN
19395	700	52	centuries	century	NNS
19395	700	53	would	would	MD
19395	700	54	not	not	RB
19395	700	55	suffice	suffice	VB
19395	700	56	.	.	.
19395	701	1	Some	some	DT
19395	701	2	other	other	JJ
19395	701	3	source	source	NN
19395	701	4	of	of	IN
19395	701	5	energy	energy	NN
19395	701	6	is	be	VBZ
19395	701	7	imperatively	imperatively	RB
19395	701	8	needed	need	VBN
19395	701	9	.	.	.
19395	702	1	If	if	IN
19395	702	2	5	5	CD
19395	702	3	per	per	NN
19395	702	4	cent	cent	NN
19395	702	5	of	of	IN
19395	702	6	a	a	DT
19395	702	7	star	star	NN
19395	702	8	's	's	POS
19395	702	9	mass	mass	NN
19395	702	10	consists	consist	VBZ
19395	702	11	originally	originally	RB
19395	702	12	of	of	IN
19395	702	13	hydrogen	hydrogen	NN
19395	702	14	atoms	atom	NNS
19395	702	15	,	,	,
19395	702	16	which	which	WDT
19395	702	17	gradually	gradually	RB
19395	702	18	combine	combine	VBP
19395	702	19	in	in	IN
19395	702	20	the	the	DT
19395	702	21	slow	slow	JJ
19395	702	22	process	process	NN
19395	702	23	of	of	IN
19395	702	24	time	time	NN
19395	702	25	to	to	TO
19395	702	26	form	form	VB
19395	702	27	more	more	RBR
19395	702	28	complex	complex	JJ
19395	702	29	elements	element	NNS
19395	702	30	,	,	,
19395	702	31	the	the	DT
19395	702	32	total	total	JJ
19395	702	33	heat	heat	NN
19395	702	34	thus	thus	RB
19395	702	35	liberated	liberate	VBN
19395	702	36	would	would	MD
19395	702	37	more	more	RBR
19395	702	38	than	than	IN
19395	702	39	suffice	suffice	VB
19395	702	40	to	to	TO
19395	702	41	account	account	VB
19395	702	42	for	for	IN
19395	702	43	all	all	DT
19395	702	44	demands	demand	NNS
19395	702	45	,	,	,
19395	702	46	and	and	CC
19395	702	47	it	-PRON-	PRP
19395	702	48	would	would	MD
19395	702	49	be	be	VB
19395	702	50	unnecessary	unnecessary	JJ
19395	702	51	to	to	TO
19395	702	52	assume	assume	VB
19395	702	53	the	the	DT
19395	702	54	existence	existence	NN
19395	702	55	of	of	IN
19395	702	56	any	any	DT
19395	702	57	other	other	JJ
19395	702	58	source	source	NN
19395	702	59	of	of	IN
19395	702	60	heat	heat	NN
19395	702	61	.	.	.
19395	703	1	[	[	-LRB-
19395	703	2	Illustration	illustration	NN
19395	703	3	:	:	:
19395	703	4	Fig	Fig	NNP
19395	703	5	.	.	.
19395	704	1	40	40	CD
19395	704	2	.	.	.
19395	705	1	Spiral	spiral	JJ
19395	705	2	nebula	nebula	NN
19395	705	3	in	in	IN
19395	705	4	Ursa	Ursa	NNP
19395	705	5	Major	Major	NNP
19395	705	6	(	(	-LRB-
19395	705	7	Ritchey	Ritchey	NNP
19395	705	8	)	)	-RRB-
19395	705	9	.	.	.
19395	706	1	Luminous	luminous	JJ
19395	706	2	matter	matter	NN
19395	706	3	,	,	,
19395	706	4	in	in	IN
19395	706	5	every	every	DT
19395	706	6	variety	variety	NN
19395	706	7	of	of	IN
19395	706	8	physical	physical	JJ
19395	706	9	and	and	CC
19395	706	10	chemical	chemical	NN
19395	706	11	state	state	NN
19395	706	12	,	,	,
19395	706	13	is	be	VBZ
19395	706	14	available	available	JJ
19395	706	15	for	for	IN
19395	706	16	study	study	NN
19395	706	17	in	in	IN
19395	706	18	the	the	DT
19395	706	19	most	most	RBS
19395	706	20	diverse	diverse	JJ
19395	706	21	celestial	celestial	JJ
19395	706	22	objects	object	NNS
19395	706	23	,	,	,
19395	706	24	from	from	IN
19395	706	25	the	the	DT
19395	706	26	spiral	spiral	JJ
19395	706	27	and	and	CC
19395	706	28	irregular	irregular	JJ
19395	706	29	nebulæ	nebulæ	NN
19395	706	30	through	through	IN
19395	706	31	all	all	PDT
19395	706	32	the	the	DT
19395	706	33	types	type	NNS
19395	706	34	of	of	IN
19395	706	35	stars	star	NNS
19395	706	36	.	.	.
19395	707	1	Doctor	Doctor	NNP
19395	707	2	van	van	NNP
19395	707	3	Maanen	Maanen	NNP
19395	707	4	's	's	POS
19395	707	5	measures	measure	NNS
19395	707	6	of	of	IN
19395	707	7	the	the	DT
19395	707	8	Mount	Mount	NNP
19395	707	9	Wilson	Wilson	NNP
19395	707	10	photographs	photograph	NNS
19395	707	11	indicate	indicate	VBP
19395	707	12	outward	outward	JJ
19395	707	13	motion	motion	NN
19395	707	14	along	along	IN
19395	707	15	the	the	DT
19395	707	16	arms	arm	NNS
19395	707	17	of	of	IN
19395	707	18	spiral	spiral	JJ
19395	707	19	nebulæ	nebulæ	NN
19395	707	20	,	,	,
19395	707	21	while	while	IN
19395	707	22	the	the	DT
19395	707	23	spectroscope	spectroscope	NN
19395	707	24	shows	show	VBZ
19395	707	25	them	-PRON-	PRP
19395	707	26	to	to	TO
19395	707	27	be	be	VB
19395	707	28	whirling	whirl	VBG
19395	707	29	at	at	IN
19395	707	30	enormous	enormous	JJ
19395	707	31	velocities	velocity	NNS
19395	707	32	.	.	.
19395	707	33	]	]	-RRB-
19395	708	1	COSMIC	cosmic	VB
19395	708	2	PRESSURES	PRESSURES	NNP
19395	708	3	This	this	DT
19395	708	4	,	,	,
19395	708	5	it	-PRON-	PRP
19395	708	6	may	may	MD
19395	708	7	fairly	fairly	RB
19395	708	8	be	be	VB
19395	708	9	said	say	VBN
19395	708	10	,	,	,
19395	708	11	is	be	VBZ
19395	708	12	very	very	RB
19395	708	13	speculative	speculative	JJ
19395	708	14	,	,	,
19395	708	15	but	but	CC
19395	708	16	the	the	DT
19395	708	17	fact	fact	NN
19395	708	18	remains	remain	VBZ
19395	708	19	that	that	IN
19395	708	20	celestial	celestial	JJ
19395	708	21	bodies	body	NNS
19395	708	22	appear	appear	VBP
19395	708	23	to	to	TO
19395	708	24	be	be	VB
19395	708	25	the	the	DT
19395	708	26	only	only	JJ
19395	708	27	places	place	NNS
19395	708	28	in	in	IN
19395	708	29	which	which	WDT
19395	708	30	the	the	DT
19395	708	31	complex	complex	JJ
19395	708	32	elements	element	NNS
19395	708	33	may	may	MD
19395	708	34	be	be	VB
19395	708	35	in	in	IN
19395	708	36	actual	actual	JJ
19395	708	37	process	process	NN
19395	708	38	of	of	IN
19395	708	39	formation	formation	NN
19395	708	40	from	from	IN
19395	708	41	their	-PRON-	PRP$
19395	708	42	known	know	VBN
19395	708	43	source	source	NN
19395	708	44	--	--	:
19395	708	45	hydrogen	hydrogen	NN
19395	708	46	.	.	.
19395	709	1	At	at	IN
19395	709	2	least	least	JJS
19395	709	3	we	-PRON-	PRP
19395	709	4	may	may	MD
19395	709	5	see	see	VB
19395	709	6	what	what	WP
19395	709	7	a	a	DT
19395	709	8	vast	vast	JJ
19395	709	9	variety	variety	NN
19395	709	10	of	of	IN
19395	709	11	physical	physical	JJ
19395	709	12	conditions	condition	NNS
19395	709	13	these	these	DT
19395	709	14	cosmic	cosmic	JJ
19395	709	15	crucibles	crucible	NNS
19395	709	16	afford	afford	VBP
19395	709	17	.	.	.
19395	710	1	At	at	IN
19395	710	2	one	one	CD
19395	710	3	end	end	NN
19395	710	4	of	of	IN
19395	710	5	the	the	DT
19395	710	6	scale	scale	NN
19395	710	7	we	-PRON-	PRP
19395	710	8	have	have	VBP
19395	710	9	the	the	DT
19395	710	10	excessively	excessively	RB
19395	710	11	tenuous	tenuous	JJ
19395	710	12	nebulæ	nebulæ	NN
19395	710	13	,	,	,
19395	710	14	the	the	DT
19395	710	15	luminosity	luminosity	NN
19395	710	16	of	of	IN
19395	710	17	which	which	WDT
19395	710	18	,	,	,
19395	710	19	mysterious	mysterious	JJ
19395	710	20	in	in	IN
19395	710	21	its	-PRON-	PRP$
19395	710	22	origin	origin	NN
19395	710	23	,	,	,
19395	710	24	resembles	resemble	VBZ
19395	710	25	the	the	DT
19395	710	26	electric	electric	JJ
19395	710	27	glow	glow	NN
19395	710	28	in	in	IN
19395	710	29	our	-PRON-	PRP$
19395	710	30	vacuum	vacuum	NN
19395	710	31	tubes	tube	NNS
19395	710	32	.	.	.
19395	711	1	Here	here	RB
19395	711	2	we	-PRON-	PRP
19395	711	3	can	can	MD
19395	711	4	detect	detect	VB
19395	711	5	only	only	RB
19395	711	6	the	the	DT
19395	711	7	lightest	light	JJS
19395	711	8	and	and	CC
19395	711	9	simplest	simple	JJS
19395	711	10	of	of	IN
19395	711	11	the	the	DT
19395	711	12	elements	element	NNS
19395	711	13	.	.	.
19395	712	1	In	in	IN
19395	712	2	the	the	DT
19395	712	3	giant	giant	JJ
19395	712	4	stars	star	NNS
19395	712	5	,	,	,
19395	712	6	also	also	RB
19395	712	7	extremely	extremely	RB
19395	712	8	tenuous	tenuous	JJ
19395	712	9	(	(	-LRB-
19395	712	10	the	the	DT
19395	712	11	density	density	NN
19395	712	12	of	of	IN
19395	712	13	Betelgeuse	Betelgeuse	NNP
19395	712	14	can	can	MD
19395	712	15	hardly	hardly	RB
19395	712	16	exceed	exceed	VB
19395	712	17	one	one	CD
19395	712	18	-	-	HYPH
19395	712	19	thousandth	thousandth	NN
19395	712	20	of	of	IN
19395	712	21	an	an	DT
19395	712	22	atmosphere	atmosphere	NN
19395	712	23	)	)	-RRB-
19395	712	24	we	-PRON-	PRP
19395	712	25	observe	observe	VBP
19395	712	26	the	the	DT
19395	712	27	spectra	spectra	NN
19395	712	28	of	of	IN
19395	712	29	iron	iron	NN
19395	712	30	,	,	,
19395	712	31	manganese	manganese	JJ
19395	712	32	,	,	,
19395	712	33	titanium	titanium	NN
19395	712	34	,	,	,
19395	712	35	calcium	calcium	NN
19395	712	36	,	,	,
19395	712	37	chromium	chromium	NN
19395	712	38	,	,	,
19395	712	39	magnesium	magnesium	NN
19395	712	40	,	,	,
19395	712	41	vanadium	vanadium	NN
19395	712	42	,	,	,
19395	712	43	and	and	CC
19395	712	44	sodium	sodium	NN
19395	712	45	,	,	,
19395	712	46	in	in	IN
19395	712	47	addition	addition	NN
19395	712	48	to	to	IN
19395	712	49	titanium	titanium	NN
19395	712	50	oxide	oxide	RB
19395	712	51	.	.	.
19395	713	1	The	the	DT
19395	713	2	outer	outer	JJ
19395	713	3	part	part	NN
19395	713	4	of	of	IN
19395	713	5	these	these	DT
19395	713	6	bodies	body	NNS
19395	713	7	,	,	,
19395	713	8	from	from	IN
19395	713	9	which	which	WDT
19395	713	10	light	light	NN
19395	713	11	reaches	reach	VBZ
19395	713	12	us	-PRON-	PRP
19395	713	13	,	,	,
19395	713	14	must	must	MD
19395	713	15	therefore	therefore	RB
19395	713	16	be	be	VB
19395	713	17	at	at	IN
19395	713	18	a	a	DT
19395	713	19	temperature	temperature	NN
19395	713	20	of	of	IN
19395	713	21	only	only	RB
19395	713	22	a	a	DT
19395	713	23	few	few	JJ
19395	713	24	thousand	thousand	CD
19395	713	25	degrees	degree	NNS
19395	713	26	,	,	,
19395	713	27	but	but	CC
19395	713	28	vastly	vastly	RB
19395	713	29	higher	high	JJR
19395	713	30	temperatures	temperature	NNS
19395	713	31	must	must	MD
19395	713	32	prevail	prevail	VB
19395	713	33	at	at	IN
19395	713	34	their	-PRON-	PRP$
19395	713	35	centres	centre	NNS
19395	713	36	.	.	.
19395	714	1	In	in	IN
19395	714	2	passing	pass	VBG
19395	714	3	up	up	RP
19395	714	4	the	the	DT
19395	714	5	temperature	temperature	NN
19395	714	6	curve	curve	NN
19395	714	7	more	more	JJR
19395	714	8	and	and	CC
19395	714	9	more	more	JJR
19395	714	10	elements	element	NNS
19395	714	11	appear	appear	VBP
19395	714	12	,	,	,
19395	714	13	the	the	DT
19395	714	14	surface	surface	NN
19395	714	15	temperature	temperature	NN
19395	714	16	rises	rise	VBZ
19395	714	17	,	,	,
19395	714	18	and	and	CC
19395	714	19	the	the	DT
19395	714	20	internal	internal	JJ
19395	714	21	temperature	temperature	NN
19395	714	22	may	may	MD
19395	714	23	reach	reach	VB
19395	714	24	millions	million	NNS
19395	714	25	of	of	IN
19395	714	26	degrees	degree	NNS
19395	714	27	.	.	.
19395	715	1	At	at	IN
19395	715	2	the	the	DT
19395	715	3	same	same	JJ
19395	715	4	time	time	NN
19395	715	5	the	the	DT
19395	715	6	pressure	pressure	NN
19395	715	7	within	within	IN
19395	715	8	must	must	MD
19395	715	9	also	also	RB
19395	715	10	rise	rise	VB
19395	715	11	,	,	,
19395	715	12	reaching	reach	VBG
19395	715	13	enormous	enormous	JJ
19395	715	14	figures	figure	NNS
19395	715	15	in	in	IN
19395	715	16	the	the	DT
19395	715	17	last	last	JJ
19395	715	18	stages	stage	NNS
19395	715	19	of	of	IN
19395	715	20	stellar	stellar	JJ
19395	715	21	life	life	NN
19395	715	22	.	.	.
19395	716	1	Cook	Cook	NNP
19395	716	2	has	have	VBZ
19395	716	3	calculated	calculate	VBN
19395	716	4	that	that	IN
19395	716	5	the	the	DT
19395	716	6	pressure	pressure	NN
19395	716	7	at	at	IN
19395	716	8	the	the	DT
19395	716	9	centre	centre	NN
19395	716	10	of	of	IN
19395	716	11	the	the	DT
19395	716	12	earth	earth	NN
19395	716	13	is	be	VBZ
19395	716	14	between	between	IN
19395	716	15	4,000	4,000	CD
19395	716	16	and	and	CC
19395	716	17	10,000	10,000	CD
19395	716	18	tons	ton	NNS
19395	716	19	per	per	IN
19395	716	20	square	square	JJ
19395	716	21	inch	inch	NN
19395	716	22	,	,	,
19395	716	23	and	and	CC
19395	716	24	this	this	DT
19395	716	25	must	must	MD
19395	716	26	be	be	VB
19395	716	27	only	only	RB
19395	716	28	a	a	DT
19395	716	29	very	very	RB
19395	716	30	small	small	JJ
19395	716	31	fraction	fraction	NN
19395	716	32	of	of	IN
19395	716	33	that	that	WDT
19395	716	34	attained	attain	VBD
19395	716	35	within	within	IN
19395	716	36	larger	large	JJR
19395	716	37	celestial	celestial	JJ
19395	716	38	bodies	body	NNS
19395	716	39	.	.	.
19395	717	1	Jeans	Jeans	NNPS
19395	717	2	has	have	VBZ
19395	717	3	computed	compute	VBN
19395	717	4	the	the	DT
19395	717	5	pressure	pressure	NN
19395	717	6	at	at	IN
19395	717	7	the	the	DT
19395	717	8	centre	centre	NN
19395	717	9	of	of	IN
19395	717	10	two	two	CD
19395	717	11	colliding	collide	VBG
19395	717	12	stars	star	NNS
19395	717	13	as	as	IN
19395	717	14	they	-PRON-	PRP
19395	717	15	strike	strike	VBP
19395	717	16	and	and	CC
19395	717	17	flatten	flatten	VBP
19395	717	18	,	,	,
19395	717	19	and	and	CC
19395	717	20	finds	find	VBZ
19395	717	21	it	-PRON-	PRP
19395	717	22	may	may	MD
19395	717	23	be	be	VB
19395	717	24	of	of	IN
19395	717	25	the	the	DT
19395	717	26	order	order	NN
19395	717	27	of	of	IN
19395	717	28	1,000,000,000	1,000,000,000	CD
19395	717	29	tons	ton	NNS
19395	717	30	per	per	IN
19395	717	31	square	square	JJ
19395	717	32	inch	inch	NN
19395	717	33	--	--	:
19395	717	34	sufficient	sufficient	JJ
19395	717	35	,	,	,
19395	717	36	if	if	IN
19395	717	37	their	-PRON-	PRP$
19395	717	38	diameter	diameter	NN
19395	717	39	be	be	VB
19395	717	40	equal	equal	JJ
19395	717	41	to	to	IN
19395	717	42	that	that	DT
19395	717	43	of	of	IN
19395	717	44	the	the	DT
19395	717	45	sun	sun	NN
19395	717	46	--	--	:
19395	717	47	to	to	TO
19395	717	48	vaporize	vaporize	VB
19395	717	49	them	-PRON-	PRP
19395	717	50	100,000	100,000	CD
19395	717	51	times	time	NNS
19395	717	52	over	over	RB
19395	717	53	.	.	.
19395	718	1	Compare	compare	VB
19395	718	2	these	these	DT
19395	718	3	pressures	pressure	NNS
19395	718	4	with	with	IN
19395	718	5	the	the	DT
19395	718	6	highest	high	JJS
19395	718	7	that	that	WDT
19395	718	8	can	can	MD
19395	718	9	be	be	VB
19395	718	10	produced	produce	VBN
19395	718	11	on	on	IN
19395	718	12	earth	earth	NN
19395	718	13	.	.	.
19395	719	1	If	if	IN
19395	719	2	the	the	DT
19395	719	3	German	german	JJ
19395	719	4	gun	gun	NN
19395	719	5	that	that	WDT
19395	719	6	bombarded	bombard	VBD
19395	719	7	Paris	Paris	NNP
19395	719	8	were	be	VBD
19395	719	9	loaded	load	VBN
19395	719	10	with	with	IN
19395	719	11	a	a	DT
19395	719	12	solid	solid	JJ
19395	719	13	steel	steel	NN
19395	719	14	projectile	projectile	NN
19395	719	15	of	of	IN
19395	719	16	suitable	suitable	JJ
19395	719	17	dimensions	dimension	NNS
19395	719	18	,	,	,
19395	719	19	a	a	DT
19395	719	20	muzzle	muzzle	NN
19395	719	21	velocity	velocity	NN
19395	719	22	of	of	IN
19395	719	23	6,000	6,000	CD
19395	719	24	feet	foot	NNS
19395	719	25	per	per	IN
19395	719	26	second	second	JJ
19395	719	27	could	could	MD
19395	719	28	be	be	VB
19395	719	29	reached	reach	VBN
19395	719	30	.	.	.
19395	720	1	Suppose	suppose	VB
19395	720	2	this	this	DT
19395	720	3	to	to	TO
19395	720	4	be	be	VB
19395	720	5	fired	fire	VBN
19395	720	6	into	into	IN
19395	720	7	a	a	DT
19395	720	8	tapered	tapered	JJ
19395	720	9	hole	hole	NN
19395	720	10	in	in	IN
19395	720	11	a	a	DT
19395	720	12	great	great	JJ
19395	720	13	block	block	NN
19395	720	14	of	of	IN
19395	720	15	steel	steel	NN
19395	720	16	.	.	.
19395	721	1	The	the	DT
19395	721	2	instantaneous	instantaneous	JJ
19395	721	3	pressure	pressure	NN
19395	721	4	,	,	,
19395	721	5	according	accord	VBG
19395	721	6	to	to	IN
19395	721	7	Cook	Cook	NNP
19395	721	8	,	,	,
19395	721	9	would	would	MD
19395	721	10	be	be	VB
19395	721	11	about	about	IN
19395	721	12	7,000	7,000	CD
19395	721	13	tons	ton	NNS
19395	721	14	per	per	IN
19395	721	15	square	square	JJ
19395	721	16	inch	inch	NN
19395	721	17	,	,	,
19395	721	18	only	only	RB
19395	721	19	1/150000	1/150000	CD
19395	721	20	of	of	IN
19395	721	21	that	that	DT
19395	721	22	possible	possible	JJ
19395	721	23	through	through	IN
19395	721	24	the	the	DT
19395	721	25	collision	collision	NN
19395	721	26	of	of	IN
19395	721	27	the	the	DT
19395	721	28	largest	large	JJS
19395	721	29	stars	star	NNS
19395	721	30	.	.	.
19395	722	1	[	[	-LRB-
19395	722	2	Illustration	illustration	NN
19395	722	3	:	:	:
19395	722	4	Fig	Fig	NNP
19395	722	5	.	.	.
19395	723	1	41	41	CD
19395	723	2	.	.	.
19395	724	1	Mount	Mount	NNP
19395	724	2	San	San	NNP
19395	724	3	Antonio	Antonio	NNP
19395	724	4	as	as	IN
19395	724	5	seen	see	VBN
19395	724	6	from	from	IN
19395	724	7	Mount	Mount	NNP
19395	724	8	Wilson	Wilson	NNP
19395	724	9	.	.	.
19395	725	1	Michelson	Michelson	NNP
19395	725	2	is	be	VBZ
19395	725	3	measuring	measure	VBG
19395	725	4	the	the	DT
19395	725	5	velocity	velocity	NN
19395	725	6	of	of	IN
19395	725	7	light	light	NN
19395	725	8	between	between	IN
19395	725	9	stations	station	NNS
19395	725	10	on	on	IN
19395	725	11	Mount	Mount	NNP
19395	725	12	Wilson	Wilson	NNP
19395	725	13	and	and	CC
19395	725	14	Mount	Mount	NNP
19395	725	15	San	San	NNP
19395	725	16	Antonio	Antonio	NNP
19395	725	17	.	.	.
19395	726	1	Astronomical	astronomical	JJ
19395	726	2	observations	observation	NNS
19395	726	3	afford	afford	VBP
19395	726	4	the	the	DT
19395	726	5	best	good	JJS
19395	726	6	means	mean	NNS
19395	726	7	,	,	,
19395	726	8	however	however	RB
19395	726	9	,	,	,
19395	726	10	of	of	IN
19395	726	11	detecting	detect	VBG
19395	726	12	any	any	DT
19395	726	13	possible	possible	JJ
19395	726	14	difference	difference	NN
19395	726	15	between	between	IN
19395	726	16	the	the	DT
19395	726	17	velocities	velocity	NNS
19395	726	18	of	of	IN
19395	726	19	light	light	NN
19395	726	20	of	of	IN
19395	726	21	different	different	JJ
19395	726	22	colors	color	NNS
19395	726	23	.	.	.
19395	727	1	From	from	IN
19395	727	2	studies	study	NNS
19395	727	3	of	of	IN
19395	727	4	variable	variable	JJ
19395	727	5	stars	star	NNS
19395	727	6	in	in	IN
19395	727	7	the	the	DT
19395	727	8	cluster	cluster	NN
19395	727	9	Messier	Messier	NNP
19395	727	10	5	5	CD
19395	727	11	Shapley	Shapley	NNP
19395	727	12	concludes	conclude	VBZ
19395	727	13	that	that	IN
19395	727	14	if	if	IN
19395	727	15	there	there	EX
19395	727	16	is	be	VBZ
19395	727	17	any	any	DT
19395	727	18	difference	difference	NN
19395	727	19	between	between	IN
19395	727	20	the	the	DT
19395	727	21	velocities	velocity	NNS
19395	727	22	of	of	IN
19395	727	23	blue	blue	JJ
19395	727	24	and	and	CC
19395	727	25	yellow	yellow	JJ
19395	727	26	light	light	NN
19395	727	27	in	in	IN
19395	727	28	free	free	JJ
19395	727	29	space	space	NN
19395	727	30	it	-PRON-	PRP
19395	727	31	can	can	MD
19395	727	32	not	not	RB
19395	727	33	exceed	exceed	VB
19395	727	34	two	two	CD
19395	727	35	inches	inch	NNS
19395	727	36	in	in	IN
19395	727	37	one	one	CD
19395	727	38	second	second	NN
19395	727	39	,	,	,
19395	727	40	the	the	DT
19395	727	41	time	time	NN
19395	727	42	in	in	IN
19395	727	43	which	which	WDT
19395	727	44	light	light	NN
19395	727	45	travels	travel	VBZ
19395	727	46	186,000	186,000	CD
19395	727	47	miles	mile	NNS
19395	727	48	.	.	.
19395	727	49	]	]	-RRB-
19395	728	1	Finally	finally	RB
19395	728	2	,	,	,
19395	728	3	we	-PRON-	PRP
19395	728	4	may	may	MD
19395	728	5	compare	compare	VB
19395	728	6	the	the	DT
19395	728	7	effects	effect	NNS
19395	728	8	of	of	IN
19395	728	9	light	light	JJ
19395	728	10	pressure	pressure	NN
19395	728	11	on	on	IN
19395	728	12	the	the	DT
19395	728	13	earth	earth	NN
19395	728	14	and	and	CC
19395	728	15	stars	star	NNS
19395	728	16	.	.	.
19395	729	1	Twenty	twenty	CD
19395	729	2	years	year	NNS
19395	729	3	ago	ago	RB
19395	729	4	Nichols	Nichols	NNP
19395	729	5	and	and	CC
19395	729	6	Hull	Hull	NNP
19395	729	7	succeeded	succeed	VBD
19395	729	8	,	,	,
19395	729	9	with	with	IN
19395	729	10	the	the	DT
19395	729	11	aid	aid	NN
19395	729	12	of	of	IN
19395	729	13	the	the	DT
19395	729	14	most	most	RBS
19395	729	15	sensitive	sensitive	JJ
19395	729	16	apparatus	apparatus	NN
19395	729	17	,	,	,
19395	729	18	in	in	IN
19395	729	19	measuring	measure	VBG
19395	729	20	the	the	DT
19395	729	21	minute	minute	NN
19395	729	22	displacements	displacement	NNS
19395	729	23	produced	produce	VBN
19395	729	24	by	by	IN
19395	729	25	the	the	DT
19395	729	26	pressure	pressure	NN
19395	729	27	of	of	IN
19395	729	28	light	light	NN
19395	729	29	.	.	.
19395	730	1	The	the	DT
19395	730	2	effect	effect	NN
19395	730	3	is	be	VBZ
19395	730	4	so	so	RB
19395	730	5	slight	slight	JJ
19395	730	6	,	,	,
19395	730	7	even	even	RB
19395	730	8	with	with	IN
19395	730	9	the	the	DT
19395	730	10	brightest	bright	JJS
19395	730	11	light	light	NN
19395	730	12	-	-	HYPH
19395	730	13	sources	source	NNS
19395	730	14	available	available	JJ
19395	730	15	,	,	,
19395	730	16	that	that	DT
19395	730	17	great	great	JJ
19395	730	18	experimental	experimental	JJ
19395	730	19	skill	skill	NN
19395	730	20	is	be	VBZ
19395	730	21	required	require	VBN
19395	730	22	to	to	TO
19395	730	23	measure	measure	VB
19395	730	24	it	-PRON-	PRP
19395	730	25	.	.	.
19395	731	1	Yet	yet	CC
19395	731	2	in	in	IN
19395	731	3	the	the	DT
19395	731	4	case	case	NN
19395	731	5	of	of	IN
19395	731	6	some	some	DT
19395	731	7	of	of	IN
19395	731	8	the	the	DT
19395	731	9	larger	large	JJR
19395	731	10	stars	star	NNS
19395	731	11	Eddington	Eddington	NNP
19395	731	12	calculates	calculate	VBZ
19395	731	13	that	that	IN
19395	731	14	one	one	CD
19395	731	15	-	-	HYPH
19395	731	16	half	half	NN
19395	731	17	of	of	IN
19395	731	18	their	-PRON-	PRP$
19395	731	19	mass	mass	NN
19395	731	20	is	be	VBZ
19395	731	21	supported	support	VBN
19395	731	22	by	by	IN
19395	731	23	radiation	radiation	NN
19395	731	24	pressure	pressure	NN
19395	731	25	,	,	,
19395	731	26	and	and	CC
19395	731	27	this	this	DT
19395	731	28	against	against	IN
19395	731	29	their	-PRON-	PRP$
19395	731	30	enormous	enormous	JJ
19395	731	31	gravitational	gravitational	JJ
19395	731	32	attraction	attraction	NN
19395	731	33	.	.	.
19395	732	1	In	in	IN
19395	732	2	fact	fact	NN
19395	732	3	,	,	,
19395	732	4	if	if	IN
19395	732	5	their	-PRON-	PRP$
19395	732	6	mass	mass	NN
19395	732	7	were	be	VBD
19395	732	8	as	as	RB
19395	732	9	great	great	JJ
19395	732	10	as	as	IN
19395	732	11	ten	ten	CD
19395	732	12	times	time	NNS
19395	732	13	that	that	DT
19395	732	14	of	of	IN
19395	732	15	the	the	DT
19395	732	16	sun	sun	NN
19395	732	17	,	,	,
19395	732	18	the	the	DT
19395	732	19	radiation	radiation	NN
19395	732	20	pressure	pressure	NN
19395	732	21	would	would	MD
19395	732	22	so	so	RB
19395	732	23	nearly	nearly	RB
19395	732	24	overcome	overcome	VB
19395	732	25	the	the	DT
19395	732	26	pull	pull	NN
19395	732	27	of	of	IN
19395	732	28	gravitation	gravitation	NN
19395	732	29	that	that	IN
19395	732	30	they	-PRON-	PRP
19395	732	31	would	would	MD
19395	732	32	be	be	VB
19395	732	33	likely	likely	JJ
19395	732	34	to	to	TO
19395	732	35	break	break	VB
19395	732	36	up	up	RP
19395	732	37	.	.	.
19395	733	1	But	but	CC
19395	733	2	enough	enough	JJ
19395	733	3	has	have	VBZ
19395	733	4	been	be	VBN
19395	733	5	said	say	VBN
19395	733	6	to	to	TO
19395	733	7	illustrate	illustrate	VB
19395	733	8	the	the	DT
19395	733	9	wide	wide	JJ
19395	733	10	variety	variety	NN
19395	733	11	of	of	IN
19395	733	12	experimental	experimental	JJ
19395	733	13	devices	device	NNS
19395	733	14	that	that	WDT
19395	733	15	stand	stand	VBP
19395	733	16	at	at	IN
19395	733	17	our	-PRON-	PRP$
19395	733	18	service	service	NN
19395	733	19	in	in	IN
19395	733	20	the	the	DT
19395	733	21	laboratories	laboratory	NNS
19395	733	22	of	of	IN
19395	733	23	the	the	DT
19395	733	24	heavens	heavens	NNPS
19395	733	25	.	.	.
19395	734	1	Here	here	RB
19395	734	2	the	the	DT
19395	734	3	physicist	physicist	NN
19395	734	4	and	and	CC
19395	734	5	chemist	chemist	NN
19395	734	6	of	of	IN
19395	734	7	the	the	DT
19395	734	8	future	future	NN
19395	734	9	will	will	MD
19395	734	10	more	more	RBR
19395	734	11	and	and	CC
19395	734	12	more	more	RBR
19395	734	13	frequently	frequently	RB
19395	734	14	supplement	supplement	VBP
19395	734	15	their	-PRON-	PRP$
19395	734	16	terrestrial	terrestrial	JJ
19395	734	17	apparatus	apparatus	NN
19395	734	18	,	,	,
19395	734	19	and	and	CC
19395	734	20	find	find	VB
19395	734	21	new	new	JJ
19395	734	22	clues	clue	NNS
19395	734	23	to	to	IN
19395	734	24	the	the	DT
19395	734	25	complex	complex	JJ
19395	734	26	problems	problem	NNS
19395	734	27	which	which	WDT
19395	734	28	the	the	DT
19395	734	29	amazing	amazing	JJ
19395	734	30	progress	progress	NN
19395	734	31	of	of	IN
19395	734	32	recent	recent	JJ
19395	734	33	years	year	NNS
19395	734	34	has	have	VBZ
19395	734	35	already	already	RB
19395	734	36	done	do	VBN
19395	734	37	so	so	RB
19395	734	38	much	much	JJ
19395	734	39	to	to	TO
19395	734	40	solve	solve	VB
19395	734	41	.	.	.
19395	735	1	PRACTICAL	practical	NN
19395	735	2	VALUE	value	NN
19395	735	3	OF	of	IN
19395	735	4	RESEARCHES	researches	NN
19395	735	5	ON	on	IN
19395	735	6	THE	the	DT
19395	735	7	CONSTITUTION	CONSTITUTION	NNP
19395	735	8	OF	of	IN
19395	735	9	MATTER	MATTER	NNP
19395	735	10	The	the	DT
19395	735	11	layman	layman	NN
19395	735	12	has	have	VBZ
19395	735	13	no	no	DT
19395	735	14	difficulty	difficulty	NN
19395	735	15	in	in	IN
19395	735	16	recognizing	recognize	VBG
19395	735	17	the	the	DT
19395	735	18	practical	practical	JJ
19395	735	19	value	value	NN
19395	735	20	of	of	IN
19395	735	21	researches	research	NNS
19395	735	22	directed	direct	VBN
19395	735	23	toward	toward	IN
19395	735	24	the	the	DT
19395	735	25	improvement	improvement	NN
19395	735	26	of	of	IN
19395	735	27	the	the	DT
19395	735	28	incandescent	incandescent	NN
19395	735	29	lamp	lamp	NN
19395	735	30	or	or	CC
19395	735	31	the	the	DT
19395	735	32	increased	increase	VBN
19395	735	33	efficiency	efficiency	NN
19395	735	34	of	of	IN
19395	735	35	the	the	DT
19395	735	36	telephone	telephone	NN
19395	735	37	.	.	.
19395	736	1	He	-PRON-	PRP
19395	736	2	can	can	MD
19395	736	3	see	see	VB
19395	736	4	the	the	DT
19395	736	5	results	result	NNS
19395	736	6	in	in	IN
19395	736	7	the	the	DT
19395	736	8	greatly	greatly	RB
19395	736	9	decreased	decrease	VBN
19395	736	10	cost	cost	NN
19395	736	11	of	of	IN
19395	736	12	electric	electric	JJ
19395	736	13	illumination	illumination	NN
19395	736	14	and	and	CC
19395	736	15	the	the	DT
19395	736	16	rapid	rapid	JJ
19395	736	17	extension	extension	NN
19395	736	18	of	of	IN
19395	736	19	the	the	DT
19395	736	20	range	range	NN
19395	736	21	of	of	IN
19395	736	22	the	the	DT
19395	736	23	human	human	JJ
19395	736	24	voice	voice	NN
19395	736	25	.	.	.
19395	737	1	But	but	CC
19395	737	2	the	the	DT
19395	737	3	very	very	JJ
19395	737	4	men	man	NNS
19395	737	5	who	who	WP
19395	737	6	have	have	VBP
19395	737	7	made	make	VBN
19395	737	8	these	these	DT
19395	737	9	advances	advance	NNS
19395	737	10	,	,	,
19395	737	11	those	those	DT
19395	737	12	who	who	WP
19395	737	13	have	have	VBP
19395	737	14	succeeded	succeed	VBN
19395	737	15	beyond	beyond	IN
19395	737	16	all	all	DT
19395	737	17	expectation	expectation	NN
19395	737	18	in	in	IN
19395	737	19	accomplishing	accomplish	VBG
19395	737	20	the	the	DT
19395	737	21	economic	economic	JJ
19395	737	22	purposes	purpose	NNS
19395	737	23	in	in	IN
19395	737	24	view	view	NN
19395	737	25	,	,	,
19395	737	26	are	be	VBP
19395	737	27	most	most	RBS
19395	737	28	emphatic	emphatic	JJ
19395	737	29	in	in	IN
19395	737	30	their	-PRON-	PRP$
19395	737	31	insistence	insistence	NN
19395	737	32	upon	upon	IN
19395	737	33	the	the	DT
19395	737	34	importance	importance	NN
19395	737	35	of	of	IN
19395	737	36	research	research	NN
19395	737	37	of	of	IN
19395	737	38	a	a	DT
19395	737	39	more	more	RBR
19395	737	40	fundamental	fundamental	JJ
19395	737	41	character	character	NN
19395	737	42	.	.	.
19395	738	1	Thus	thus	RB
19395	738	2	Vice	Vice	NNP
19395	738	3	-	-	HYPH
19395	738	4	President	President	NNP
19395	738	5	J.	J.	NNP
19395	738	6	J.	J.	NNP
19395	738	7	Carty	Carty	NNP
19395	738	8	,	,	,
19395	738	9	of	of	IN
19395	738	10	the	the	DT
19395	738	11	American	American	NNP
19395	738	12	Telephone	Telephone	NNP
19395	738	13	and	and	CC
19395	738	14	Telegraph	Telegraph	NNP
19395	738	15	Company	Company	NNP
19395	738	16	,	,	,
19395	738	17	who	who	WP
19395	738	18	directs	direct	VBZ
19395	738	19	its	-PRON-	PRP$
19395	738	20	great	great	JJ
19395	738	21	Department	Department	NNP
19395	738	22	of	of	IN
19395	738	23	Development	Development	NNP
19395	738	24	and	and	CC
19395	738	25	Research	Research	NNP
19395	738	26	,	,	,
19395	738	27	and	and	CC
19395	738	28	Doctor	Doctor	NNP
19395	738	29	W.	W.	NNP
19395	738	30	J.	J.	NNP
19395	738	31	Whitney	Whitney	NNP
19395	738	32	,	,	,
19395	738	33	Director	Director	NNP
19395	738	34	of	of	IN
19395	738	35	the	the	DT
19395	738	36	Research	Research	NNP
19395	738	37	Laboratory	Laboratory	NNP
19395	738	38	of	of	IN
19395	738	39	the	the	DT
19395	738	40	General	General	NNP
19395	738	41	Electric	Electric	NNP
19395	738	42	Company	Company	NNP
19395	738	43	,	,	,
19395	738	44	have	have	VBP
19395	738	45	repeatedly	repeatedly	RB
19395	738	46	expressed	express	VBN
19395	738	47	their	-PRON-	PRP$
19395	738	48	indebtedness	indebtedness	NN
19395	738	49	to	to	IN
19395	738	50	the	the	DT
19395	738	51	investigations	investigation	NNS
19395	738	52	of	of	IN
19395	738	53	the	the	DT
19395	738	54	physicist	physicist	NN
19395	738	55	,	,	,
19395	738	56	made	make	VBN
19395	738	57	with	with	IN
19395	738	58	no	no	DT
19395	738	59	thought	thought	NN
19395	738	60	of	of	IN
19395	738	61	immediate	immediate	JJ
19395	738	62	practical	practical	JJ
19395	738	63	return	return	NN
19395	738	64	.	.	.
19395	739	1	Faraday	Faraday	NNP
19395	739	2	,	,	,
19395	739	3	studying	study	VBG
19395	739	4	the	the	DT
19395	739	5	laws	law	NNS
19395	739	6	of	of	IN
19395	739	7	electricity	electricity	NN
19395	739	8	,	,	,
19395	739	9	discovered	discover	VBD
19395	739	10	the	the	DT
19395	739	11	principle	principle	NN
19395	739	12	which	which	WDT
19395	739	13	rendered	render	VBD
19395	739	14	the	the	DT
19395	739	15	dynamo	dynamo	NN
19395	739	16	possible	possible	JJ
19395	739	17	.	.	.
19395	740	1	Maxwell	Maxwell	NNP
19395	740	2	,	,	,
19395	740	3	Henry	Henry	NNP
19395	740	4	,	,	,
19395	740	5	and	and	CC
19395	740	6	Hertz	Hertz	NNP
19395	740	7	,	,	,
19395	740	8	equally	equally	RB
19395	740	9	unconcerned	unconcerned	JJ
19395	740	10	with	with	IN
19395	740	11	material	material	NN
19395	740	12	advantage	advantage	NN
19395	740	13	,	,	,
19395	740	14	made	make	VBD
19395	740	15	wireless	wireless	JJ
19395	740	16	telegraphy	telegraphy	NN
19395	740	17	practicable	practicable	JJ
19395	740	18	.	.	.
19395	741	1	In	in	IN
19395	741	2	fact	fact	NN
19395	741	3	,	,	,
19395	741	4	all	all	DT
19395	741	5	truly	truly	RB
19395	741	6	great	great	JJ
19395	741	7	advances	advance	NNS
19395	741	8	are	be	VBP
19395	741	9	thus	thus	RB
19395	741	10	derived	derive	VBN
19395	741	11	from	from	IN
19395	741	12	fundamental	fundamental	JJ
19395	741	13	science	science	NN
19395	741	14	,	,	,
19395	741	15	and	and	CC
19395	741	16	the	the	DT
19395	741	17	future	future	JJ
19395	741	18	progress	progress	NN
19395	741	19	of	of	IN
19395	741	20	the	the	DT
19395	741	21	world	world	NN
19395	741	22	will	will	MD
19395	741	23	be	be	VB
19395	741	24	largely	largely	RB
19395	741	25	dependent	dependent	JJ
19395	741	26	upon	upon	IN
19395	741	27	the	the	DT
19395	741	28	provision	provision	NN
19395	741	29	made	make	VBN
19395	741	30	for	for	IN
19395	741	31	scientific	scientific	JJ
19395	741	32	research	research	NN
19395	741	33	,	,	,
19395	741	34	especially	especially	RB
19395	741	35	in	in	IN
19395	741	36	the	the	DT
19395	741	37	fields	field	NNS
19395	741	38	of	of	IN
19395	741	39	physics	physics	NN
19395	741	40	and	and	CC
19395	741	41	chemistry	chemistry	NN
19395	741	42	,	,	,
19395	741	43	which	which	WDT
19395	741	44	underlie	underlie	VBP
19395	741	45	all	all	DT
19395	741	46	branches	branch	NNS
19395	741	47	of	of	IN
19395	741	48	engineering	engineering	NN
19395	741	49	.	.	.
19395	742	1	The	the	DT
19395	742	2	constitution	constitution	NN
19395	742	3	of	of	IN
19395	742	4	matter	matter	NN
19395	742	5	,	,	,
19395	742	6	therefore	therefore	RB
19395	742	7	,	,	,
19395	742	8	instead	instead	RB
19395	742	9	of	of	IN
19395	742	10	appealing	appeal	VBG
19395	742	11	as	as	IN
19395	742	12	a	a	DT
19395	742	13	subject	subject	NN
19395	742	14	to	to	IN
19395	742	15	research	research	NN
19395	742	16	only	only	RB
19395	742	17	to	to	IN
19395	742	18	the	the	DT
19395	742	19	natural	natural	JJ
19395	742	20	philosopher	philosopher	NN
19395	742	21	or	or	CC
19395	742	22	to	to	IN
19395	742	23	the	the	DT
19395	742	24	general	general	JJ
19395	742	25	student	student	NN
19395	742	26	of	of	IN
19395	742	27	science	science	NN
19395	742	28	,	,	,
19395	742	29	is	be	VBZ
19395	742	30	a	a	DT
19395	742	31	question	question	NN
19395	742	32	of	of	IN
19395	742	33	the	the	DT
19395	742	34	greatest	great	JJS
19395	742	35	practical	practical	JJ
19395	742	36	concern	concern	NN
19395	742	37	.	.	.
19395	743	1	Already	already	RB
19395	743	2	the	the	DT
19395	743	3	by	by	NN
19395	743	4	-	-	HYPH
19395	743	5	products	product	NNS
19395	743	6	of	of	IN
19395	743	7	investigations	investigation	NNS
19395	743	8	directed	direct	VBN
19395	743	9	toward	toward	IN
19395	743	10	its	-PRON-	PRP$
19395	743	11	elucidation	elucidation	NN
19395	743	12	have	have	VBP
19395	743	13	been	be	VBN
19395	743	14	numerous	numerous	JJ
19395	743	15	and	and	CC
19395	743	16	useful	useful	JJ
19395	743	17	in	in	IN
19395	743	18	the	the	DT
19395	743	19	highest	high	JJS
19395	743	20	degree	degree	NN
19395	743	21	.	.	.
19395	744	1	Helium	helium	NN
19395	744	2	has	have	VBZ
19395	744	3	been	be	VBN
19395	744	4	already	already	RB
19395	744	5	cited	cite	VBN
19395	744	6	;	;	:
19395	744	7	X	X	NNS
19395	744	8	-	-	NNS
19395	744	9	rays	ray	NNS
19395	744	10	hardly	hardly	RB
19395	744	11	require	require	VBP
19395	744	12	mention	mention	NN
19395	744	13	;	;	:
19395	744	14	radium	radium	NN
19395	744	15	,	,	,
19395	744	16	which	which	WDT
19395	744	17	has	have	VBZ
19395	744	18	so	so	RB
19395	744	19	materially	materially	RB
19395	744	20	aided	aid	VBN
19395	744	21	sufferers	sufferer	NNS
19395	744	22	from	from	IN
19395	744	23	cancer	cancer	NN
19395	744	24	,	,	,
19395	744	25	is	be	VBZ
19395	744	26	still	still	RB
19395	744	27	better	well	RBR
19395	744	28	known	know	VBN
19395	744	29	.	.	.
19395	745	1	Wireless	wireless	JJ
19395	745	2	telephony	telephony	NN
19395	745	3	and	and	CC
19395	745	4	transcontinental	transcontinental	JJ
19395	745	5	telephony	telephony	NN
19395	745	6	with	with	IN
19395	745	7	wires	wire	NNS
19395	745	8	were	be	VBD
19395	745	9	both	both	DT
19395	745	10	rendered	render	VBN
19395	745	11	possible	possible	JJ
19395	745	12	by	by	IN
19395	745	13	studies	study	NNS
19395	745	14	of	of	IN
19395	745	15	the	the	DT
19395	745	16	nature	nature	NN
19395	745	17	of	of	IN
19395	745	18	the	the	DT
19395	745	19	electric	electric	JJ
19395	745	20	discharge	discharge	NN
19395	745	21	in	in	IN
19395	745	22	vacuum	vacuum	NN
19395	745	23	tubes	tube	NNS
19395	745	24	.	.	.
19395	746	1	Thus	thus	RB
19395	746	2	the	the	DT
19395	746	3	"	"	``
19395	746	4	practical	practical	JJ
19395	746	5	man	man	NN
19395	746	6	,	,	,
19395	746	7	"	"	''
19395	746	8	with	with	IN
19395	746	9	his	-PRON-	PRP$
19395	746	10	distrust	distrust	NN
19395	746	11	of	of	IN
19395	746	12	"	"	``
19395	746	13	pure	pure	JJ
19395	746	14	"	"	''
19395	746	15	science	science	NN
19395	746	16	,	,	,
19395	746	17	need	need	VBP
19395	746	18	not	not	RB
19395	746	19	resent	resent	VB
19395	746	20	investments	investment	NNS
19395	746	21	made	make	VBN
19395	746	22	for	for	IN
19395	746	23	the	the	DT
19395	746	24	purpose	purpose	NN
19395	746	25	of	of	IN
19395	746	26	advancing	advance	VBG
19395	746	27	our	-PRON-	PRP$
19395	746	28	knowledge	knowledge	NN
19395	746	29	of	of	IN
19395	746	30	such	such	JJ
19395	746	31	fundamental	fundamental	JJ
19395	746	32	subjects	subject	NNS
19395	746	33	as	as	IN
19395	746	34	physics	physics	NN
19395	746	35	and	and	CC
19395	746	36	chemistry	chemistry	NN
19395	746	37	.	.	.
19395	747	1	On	on	IN
19395	747	2	the	the	DT
19395	747	3	contrary	contrary	NN
19395	747	4	,	,	,
19395	747	5	if	if	IN
19395	747	6	true	true	JJ
19395	747	7	to	to	IN
19395	747	8	his	-PRON-	PRP$
19395	747	9	name	name	NN
19395	747	10	,	,	,
19395	747	11	he	-PRON-	PRP
19395	747	12	should	should	MD
19395	747	13	help	help	VB
19395	747	14	to	to	TO
19395	747	15	multiply	multiply	VB
19395	747	16	them	-PRON-	PRP
19395	747	17	many	many	JJ
19395	747	18	fold	fold	VB
19395	747	19	in	in	IN
19395	747	20	the	the	DT
19395	747	21	interest	interest	NN
19395	747	22	of	of	IN
19395	747	23	economic	economic	JJ
19395	747	24	and	and	CC
19395	747	25	commercial	commercial	JJ
19395	747	26	development	development	NN
19395	747	27	.	.	.