id	sid	tid	token	lemma	pos
33912	1	1	Transcriber	Transcriber	NNP
33912	1	2	's	's	POS
33912	1	3	Notes	note	NNS
33912	1	4	:	:	:
33912	1	5	This	this	DT
33912	1	6	is	be	VBZ
33912	1	7	Paper	Paper	NNP
33912	1	8	36	36	CD
33912	1	9	from	from	IN
33912	1	10	the	the	DT
33912	1	11	Smithsonian	Smithsonian	NNP
33912	1	12	Institution	Institution	NNP
33912	1	13	United	United	NNP
33912	1	14	States	States	NNP
33912	1	15	National	National	NNP
33912	1	16	Museum	Museum	NNP
33912	1	17	Bulletin	Bulletin	NNP
33912	1	18	240	240	CD
33912	1	19	,	,	,
33912	1	20	comprising	comprise	VBG
33912	1	21	Papers	Papers	NNP
33912	1	22	34	34	CD
33912	1	23	-	-	SYM
33912	1	24	44	44	CD
33912	1	25	,	,	,
33912	1	26	which	which	WDT
33912	1	27	will	will	MD
33912	1	28	also	also	RB
33912	1	29	be	be	VB
33912	1	30	available	available	JJ
33912	1	31	as	as	IN
33912	1	32	a	a	DT
33912	1	33	complete	complete	JJ
33912	1	34	e	e	NN
33912	1	35	-	-	NN
33912	1	36	book	book	NN
33912	1	37	.	.	.
33912	2	1	The	the	DT
33912	2	2	front	front	JJ
33912	2	3	material	material	NN
33912	2	4	,	,	,
33912	2	5	introduction	introduction	NN
33912	2	6	and	and	CC
33912	2	7	relevant	relevant	JJ
33912	2	8	index	index	NN
33912	2	9	entries	entry	NNS
33912	2	10	from	from	IN
33912	2	11	the	the	DT
33912	2	12	Bulletin	Bulletin	NNP
33912	2	13	are	be	VBP
33912	2	14	included	include	VBN
33912	2	15	in	in	IN
33912	2	16	each	each	DT
33912	2	17	single	single	JJ
33912	2	18	-	-	HYPH
33912	2	19	paper	paper	NN
33912	2	20	e	e	NN
33912	2	21	-	-	NN
33912	2	22	book	book	NN
33912	2	23	.	.	.
33912	3	1	Inconsistencies	inconsistency	NNS
33912	3	2	in	in	IN
33912	3	3	punctuation	punctuation	NN
33912	3	4	have	have	VBP
33912	3	5	been	be	VBN
33912	3	6	corrected	correct	VBN
33912	3	7	without	without	IN
33912	3	8	note	note	NN
33912	3	9	.	.	.
33912	4	1	Inconsistent	inconsistent	JJ
33912	4	2	hyphenation	hyphenation	NN
33912	4	3	is	be	VBZ
33912	4	4	as	as	IN
33912	4	5	per	per	IN
33912	4	6	the	the	DT
33912	4	7	original	original	NN
33912	4	8	.	.	.
33912	5	1	SMITHSONIAN	SMITHSONIAN	NNP
33912	5	2	INSTITUTION	institution	NN
33912	5	3	UNITED	UNITED	NNP
33912	5	4	STATES	STATES	NNP
33912	5	5	NATIONAL	NATIONAL	NNP
33912	5	6	MUSEUM	MUSEUM	NNP
33912	5	7	BULLETIN	BULLETIN	NNP
33912	5	8	240	240	CD
33912	5	9	[	[	-LRB-
33912	5	10	Illustration	illustration	NN
33912	5	11	]	]	-RRB-
33912	5	12	SMITHSONIAN	SMITHSONIAN	NNP
33912	5	13	PRESS	PRESS	NNP
33912	5	14	MUSEUM	MUSEUM	NNP
33912	5	15	OF	of	IN
33912	5	16	HISTORY	HISTORY	NNP
33912	5	17	AND	and	CC
33912	5	18	TECHNOLOGY	TECHNOLOGY	NNP
33912	5	19	CONTRIBUTIONS	CONTRIBUTIONS	NNP
33912	5	20	FROM	from	IN
33912	5	21	THE	the	DT
33912	5	22	MUSEUM	MUSEUM	NNP
33912	5	23	OF	of	IN
33912	5	24	HISTORY	HISTORY	NNP
33912	5	25	AND	and	CC
33912	5	26	TECHNOLOGY	TECHNOLOGY	NNP
33912	5	27	_	_	NNP
33912	5	28	Papers	Papers	NNP
33912	5	29	34	34	CD
33912	5	30	-	-	SYM
33912	5	31	44	44	CD
33912	5	32	_	_	NNP
33912	5	33	_	_	NNP
33912	5	34	On	on	IN
33912	5	35	Science	Science	NNP
33912	5	36	and	and	CC
33912	5	37	Technology	Technology	NNP
33912	5	38	_	_	NNP
33912	5	39	SMITHSONIAN	SMITHSONIAN	NNP
33912	5	40	INSTITUTION	INSTITUTION	NNP
33912	5	41	.	.	.
33912	6	1	WASHINGTON	WASHINGTON	NNP
33912	6	2	,	,	,
33912	6	3	D.C.	D.C.	NNP
33912	6	4	1966	1966	CD
33912	6	5	_	_	NNP
33912	6	6	Publications	Publications	NNPS
33912	6	7	of	of	IN
33912	6	8	the	the	DT
33912	6	9	United	United	NNP
33912	6	10	States	States	NNP
33912	6	11	National	National	NNP
33912	6	12	Museum	Museum	NNP
33912	6	13	_	_	NNP
33912	6	14	The	the	DT
33912	6	15	scholarly	scholarly	JJ
33912	6	16	and	and	CC
33912	6	17	scientific	scientific	JJ
33912	6	18	publications	publication	NNS
33912	6	19	of	of	IN
33912	6	20	the	the	DT
33912	6	21	United	United	NNP
33912	6	22	States	States	NNP
33912	6	23	National	National	NNP
33912	6	24	Museum	Museum	NNP
33912	6	25	include	include	VBP
33912	6	26	two	two	CD
33912	6	27	series	serie	NNS
33912	6	28	,	,	,
33912	6	29	_	_	NNP
33912	6	30	Proceedings	Proceedings	NNP
33912	6	31	of	of	IN
33912	6	32	the	the	DT
33912	6	33	United	United	NNP
33912	6	34	States	States	NNP
33912	6	35	National	National	NNP
33912	6	36	Museum	Museum	NNP
33912	6	37	_	_	NNP
33912	6	38	and	and	CC
33912	6	39	_	_	NNP
33912	6	40	United	United	NNP
33912	6	41	States	States	NNP
33912	6	42	National	National	NNP
33912	6	43	Museum	Museum	NNP
33912	6	44	Bulletin	Bulletin	NNP
33912	6	45	_	_	NNP
33912	6	46	.	.	.
33912	7	1	In	in	IN
33912	7	2	these	these	DT
33912	7	3	series	series	NN
33912	7	4	,	,	,
33912	7	5	the	the	DT
33912	7	6	Museum	Museum	NNP
33912	7	7	publishes	publish	VBZ
33912	7	8	original	original	JJ
33912	7	9	articles	article	NNS
33912	7	10	and	and	CC
33912	7	11	monographs	monographs	NNPS
33912	7	12	dealing	deal	VBG
33912	7	13	with	with	IN
33912	7	14	the	the	DT
33912	7	15	collections	collection	NNS
33912	7	16	and	and	CC
33912	7	17	work	work	NN
33912	7	18	of	of	IN
33912	7	19	its	-PRON-	PRP$
33912	7	20	constituent	constituent	NN
33912	7	21	museums	museum	NNS
33912	7	22	--	--	:
33912	7	23	The	the	DT
33912	7	24	Museum	Museum	NNP
33912	7	25	of	of	IN
33912	7	26	Natural	Natural	NNP
33912	7	27	History	History	NNP
33912	7	28	and	and	CC
33912	7	29	the	the	DT
33912	7	30	Museum	Museum	NNP
33912	7	31	of	of	IN
33912	7	32	History	History	NNP
33912	7	33	and	and	CC
33912	7	34	Technology	Technology	NNP
33912	7	35	--	--	:
33912	7	36	setting	set	VBG
33912	7	37	forth	forth	RP
33912	7	38	newly	newly	RB
33912	7	39	acquired	acquire	VBN
33912	7	40	facts	fact	NNS
33912	7	41	in	in	IN
33912	7	42	the	the	DT
33912	7	43	fields	field	NNS
33912	7	44	of	of	IN
33912	7	45	anthropology	anthropology	NN
33912	7	46	,	,	,
33912	7	47	biology	biology	NN
33912	7	48	,	,	,
33912	7	49	history	history	NN
33912	7	50	,	,	,
33912	7	51	geology	geology	NN
33912	7	52	,	,	,
33912	7	53	and	and	CC
33912	7	54	technology	technology	NN
33912	7	55	.	.	.
33912	8	1	Copies	copy	NNS
33912	8	2	of	of	IN
33912	8	3	each	each	DT
33912	8	4	publication	publication	NN
33912	8	5	are	be	VBP
33912	8	6	distributed	distribute	VBN
33912	8	7	to	to	IN
33912	8	8	libraries	library	NNS
33912	8	9	,	,	,
33912	8	10	to	to	IN
33912	8	11	cultural	cultural	JJ
33912	8	12	and	and	CC
33912	8	13	scientific	scientific	JJ
33912	8	14	organizations	organization	NNS
33912	8	15	,	,	,
33912	8	16	and	and	CC
33912	8	17	to	to	IN
33912	8	18	specialists	specialist	NNS
33912	8	19	and	and	CC
33912	8	20	others	other	NNS
33912	8	21	interested	interested	JJ
33912	8	22	in	in	IN
33912	8	23	the	the	DT
33912	8	24	different	different	JJ
33912	8	25	subjects	subject	NNS
33912	8	26	.	.	.
33912	9	1	The	the	DT
33912	9	2	_	_	NNP
33912	9	3	Proceedings	Proceedings	NNP
33912	9	4	_	_	NNP
33912	9	5	,	,	,
33912	9	6	begun	begin	VBN
33912	9	7	in	in	IN
33912	9	8	1878	1878	CD
33912	9	9	,	,	,
33912	9	10	are	be	VBP
33912	9	11	intended	intend	VBN
33912	9	12	for	for	IN
33912	9	13	the	the	DT
33912	9	14	publication	publication	NN
33912	9	15	,	,	,
33912	9	16	in	in	IN
33912	9	17	separate	separate	JJ
33912	9	18	form	form	NN
33912	9	19	,	,	,
33912	9	20	of	of	IN
33912	9	21	shorter	short	JJR
33912	9	22	papers	paper	NNS
33912	9	23	from	from	IN
33912	9	24	the	the	DT
33912	9	25	Museum	Museum	NNP
33912	9	26	of	of	IN
33912	9	27	Natural	Natural	NNP
33912	9	28	History	History	NNP
33912	9	29	.	.	.
33912	10	1	These	these	DT
33912	10	2	are	be	VBP
33912	10	3	gathered	gather	VBN
33912	10	4	in	in	IN
33912	10	5	volumes	volume	NNS
33912	10	6	,	,	,
33912	10	7	octavo	octavo	JJ
33912	10	8	in	in	IN
33912	10	9	size	size	NN
33912	10	10	,	,	,
33912	10	11	with	with	IN
33912	10	12	the	the	DT
33912	10	13	publication	publication	NN
33912	10	14	date	date	NN
33912	10	15	of	of	IN
33912	10	16	each	each	DT
33912	10	17	paper	paper	NN
33912	10	18	recorded	record	VBN
33912	10	19	in	in	IN
33912	10	20	the	the	DT
33912	10	21	table	table	NN
33912	10	22	of	of	IN
33912	10	23	contents	content	NNS
33912	10	24	of	of	IN
33912	10	25	the	the	DT
33912	10	26	volume	volume	NN
33912	10	27	.	.	.
33912	11	1	In	in	IN
33912	11	2	the	the	DT
33912	11	3	_	_	NNP
33912	11	4	Bulletin	Bulletin	NNP
33912	11	5	_	_	NNP
33912	11	6	series	series	NN
33912	11	7	,	,	,
33912	11	8	the	the	DT
33912	11	9	first	first	JJ
33912	11	10	of	of	IN
33912	11	11	which	which	WDT
33912	11	12	was	be	VBD
33912	11	13	issued	issue	VBN
33912	11	14	in	in	IN
33912	11	15	1875	1875	CD
33912	11	16	,	,	,
33912	11	17	appear	appear	VB
33912	11	18	longer	long	RBR
33912	11	19	,	,	,
33912	11	20	separate	separate	JJ
33912	11	21	publications	publication	NNS
33912	11	22	consisting	consist	VBG
33912	11	23	of	of	IN
33912	11	24	monographs	monographs	NNP
33912	11	25	(	(	-LRB-
33912	11	26	occasionally	occasionally	RB
33912	11	27	in	in	IN
33912	11	28	several	several	JJ
33912	11	29	parts	part	NNS
33912	11	30	)	)	-RRB-
33912	11	31	and	and	CC
33912	11	32	volumes	volume	NNS
33912	11	33	in	in	IN
33912	11	34	which	which	WDT
33912	11	35	are	be	VBP
33912	11	36	collected	collect	VBN
33912	11	37	works	work	NNS
33912	11	38	on	on	IN
33912	11	39	related	related	JJ
33912	11	40	subjects	subject	NNS
33912	11	41	.	.	.
33912	12	1	_	_	NNP
33912	12	2	Bulletins	Bulletins	NNP
33912	12	3	_	_	NNP
33912	12	4	are	be	VBP
33912	12	5	either	either	DT
33912	12	6	octavo	octavo	NNP
33912	12	7	or	or	CC
33912	12	8	quarto	quarto	NNP
33912	12	9	in	in	IN
33912	12	10	size	size	NN
33912	12	11	,	,	,
33912	12	12	depending	depend	VBG
33912	12	13	on	on	IN
33912	12	14	the	the	DT
33912	12	15	needs	need	NNS
33912	12	16	of	of	IN
33912	12	17	the	the	DT
33912	12	18	presentation	presentation	NN
33912	12	19	.	.	.
33912	13	1	Since	since	IN
33912	13	2	1902	1902	CD
33912	13	3	papers	paper	NNS
33912	13	4	relating	relate	VBG
33912	13	5	to	to	IN
33912	13	6	the	the	DT
33912	13	7	botanical	botanical	JJ
33912	13	8	collections	collection	NNS
33912	13	9	of	of	IN
33912	13	10	the	the	DT
33912	13	11	Museum	Museum	NNP
33912	13	12	of	of	IN
33912	13	13	Natural	Natural	NNP
33912	13	14	History	History	NNP
33912	13	15	have	have	VBP
33912	13	16	been	be	VBN
33912	13	17	published	publish	VBN
33912	13	18	in	in	IN
33912	13	19	the	the	DT
33912	13	20	_	_	NNP
33912	13	21	Bulletin	Bulletin	NNP
33912	13	22	_	_	NNP
33912	13	23	series	series	NN
33912	13	24	under	under	IN
33912	13	25	the	the	DT
33912	13	26	heading	heading	NN
33912	13	27	_	_	NNP
33912	13	28	Contributions	Contributions	NNP
33912	13	29	from	from	IN
33912	13	30	the	the	DT
33912	13	31	United	United	NNP
33912	13	32	States	States	NNP
33912	13	33	National	National	NNP
33912	13	34	Herbarium	Herbarium	NNP
33912	13	35	_	_	NNP
33912	13	36	,	,	,
33912	13	37	and	and	CC
33912	13	38	since	since	IN
33912	13	39	1959	1959	CD
33912	13	40	,	,	,
33912	13	41	in	in	IN
33912	13	42	_	_	NNP
33912	13	43	Bulletins	Bulletins	NNP
33912	13	44	_	_	NNP
33912	13	45	titled	title	VBD
33912	13	46	"	"	``
33912	13	47	Contributions	contribution	NNS
33912	13	48	from	from	IN
33912	13	49	the	the	DT
33912	13	50	Museum	Museum	NNP
33912	13	51	of	of	IN
33912	13	52	History	History	NNP
33912	13	53	and	and	CC
33912	13	54	Technology	Technology	NNP
33912	13	55	,	,	,
33912	13	56	"	"	''
33912	13	57	have	have	VBP
33912	13	58	been	be	VBN
33912	13	59	gathered	gather	VBN
33912	13	60	shorter	short	JJR
33912	13	61	papers	paper	NNS
33912	13	62	relating	relate	VBG
33912	13	63	to	to	IN
33912	13	64	the	the	DT
33912	13	65	collections	collection	NNS
33912	13	66	and	and	CC
33912	13	67	research	research	NN
33912	13	68	of	of	IN
33912	13	69	that	that	DT
33912	13	70	Museum	Museum	NNP
33912	13	71	.	.	.
33912	14	1	The	the	DT
33912	14	2	present	present	JJ
33912	14	3	collection	collection	NN
33912	14	4	of	of	IN
33912	14	5	Contributions	Contributions	NNPS
33912	14	6	,	,	,
33912	14	7	Papers	Papers	NNP
33912	14	8	34	34	CD
33912	14	9	-	-	SYM
33912	14	10	44	44	CD
33912	14	11	,	,	,
33912	14	12	comprises	comprise	VBZ
33912	14	13	Bulletin	Bulletin	NNP
33912	14	14	240	240	CD
33912	14	15	.	.	.
33912	15	1	Each	each	DT
33912	15	2	of	of	IN
33912	15	3	these	these	DT
33912	15	4	papers	paper	NNS
33912	15	5	has	have	VBZ
33912	15	6	been	be	VBN
33912	15	7	previously	previously	RB
33912	15	8	published	publish	VBN
33912	15	9	in	in	IN
33912	15	10	separate	separate	JJ
33912	15	11	form	form	NN
33912	15	12	.	.	.
33912	16	1	The	the	DT
33912	16	2	year	year	NN
33912	16	3	of	of	IN
33912	16	4	publication	publication	NN
33912	16	5	is	be	VBZ
33912	16	6	shown	show	VBN
33912	16	7	on	on	IN
33912	16	8	the	the	DT
33912	16	9	last	last	JJ
33912	16	10	page	page	NN
33912	16	11	of	of	IN
33912	16	12	each	each	DT
33912	16	13	paper	paper	NN
33912	16	14	.	.	.
33912	17	1	FRANK	FRANK	NNP
33912	17	2	A.	a.	NN
33912	17	3	TAYLOR	TAYLOR	NNP
33912	17	4	_	_	NNP
33912	17	5	Director	Director	NNP
33912	17	6	,	,	,
33912	17	7	United	United	NNP
33912	17	8	States	States	NNP
33912	17	9	National	National	NNP
33912	17	10	Museum	Museum	NNP
33912	17	11	_	_	NNP
33912	17	12	CONTRIBUTIONS	CONTRIBUTIONS	NNP
33912	17	13	FROM	from	IN
33912	17	14	THE	the	DT
33912	17	15	MUSEUM	MUSEUM	NNP
33912	17	16	OF	of	IN
33912	17	17	HISTORY	HISTORY	NNP
33912	17	18	AND	and	CC
33912	17	19	TECHNOLOGY	TECHNOLOGY	NNP
33912	17	20	:	:	:
33912	17	21	PAPER	paper	NN
33912	17	22	36	36	CD
33912	17	23	THE	the	DT
33912	17	24	ENGINEERING	engineering	NN
33912	17	25	CONTRIBUTIONS	contributions	NN
33912	17	26	OF	of	IN
33912	17	27	WENDEL	WENDEL	NNP
33912	17	28	BOLLMAN	BOLLMAN	NNP
33912	17	29	_	_	NNP
33912	17	30	Robert	Robert	NNP
33912	17	31	M.	M.	NNP
33912	17	32	Vogel	Vogel	NNP
33912	17	33	_	_	NNP
33912	17	34	EARLY	EARLY	NNP
33912	17	35	CAREER	CAREER	NNP
33912	17	36	80	80	CD
33912	17	37	THE	the	DT
33912	17	38	BOLLMAN	BOLLMAN	NNP
33912	17	39	TRUSS	TRUSS	NNP
33912	17	40	85	85	CD
33912	17	41	W.	W.	NNP
33912	17	42	BOLLMAN	BOLLMAN	NNP
33912	17	43	AND	and	CC
33912	17	44	COMPANY	COMPANY	NNP
33912	17	45	91	91	CD
33912	17	46	FINAL	final	NN
33912	17	47	USE	use	NN
33912	17	48	OF	of	IN
33912	17	49	THE	the	DT
33912	17	50	BOLLMAN	BOLLMAN	NNP
33912	17	51	TRUSS	TRUSS	NNP
33912	17	52	95	95	CD
33912	17	53	KNOWN	KNOWN	NNP
33912	17	54	BOLLMAN	BOLLMAN	NNP
33912	17	55	WORKS	WORKS	NNP
33912	17	56	99	99	CD
33912	17	57	BIBLIOGRAPHY	BIBLIOGRAPHY	NNP
33912	17	58	104	104	CD
33912	17	59	[	[	-LRB-
33912	17	60	Illustration	illustration	NN
33912	17	61	:	:	:
33912	17	62	Figure	figure	NN
33912	17	63	1.--WENDEL	1.--wendel	CD
33912	17	64	BOLLMAN	BOLLMAN	NNP
33912	17	65	,	,	,
33912	17	66	C.E.	C.E.	NNP
33912	18	1	(	(	-LRB-
33912	18	2	1814	1814	CD
33912	18	3	-	-	SYM
33912	18	4	1884	1884	CD
33912	18	5	)	)	-RRB-
33912	18	6	.	.	.
33912	19	1	(	(	-LRB-
33912	19	2	_	_	NNP
33912	19	3	Photo	Photo	NNP
33912	19	4	courtesy	courtesy	NN
33912	19	5	of	of	IN
33912	19	6	Dr.	Dr.	NNP
33912	19	7	Stuart	Stuart	NNP
33912	19	8	Christhilf	Christhilf	NNP
33912	19	9	.	.	.
33912	19	10	_	_	NNP
33912	19	11	)	)	-RRB-
33912	19	12	]	]	-RRB-
33912	19	13	_	_	NNP
33912	19	14	Robert	Robert	NNP
33912	19	15	M.	M.	NNP
33912	19	16	Vogel	Vogel	NNP
33912	19	17	_	_	NNP
33912	19	18	THE	the	DT
33912	19	19	ENGINEERING	ENGINEERING	NNP
33912	19	20	CONTRIBUTIONS	contributions	NN
33912	19	21	OF	of	IN
33912	19	22	WENDEL	WENDEL	NNP
33912	19	23	BOLLMAN	BOLLMAN	NNP
33912	19	24	_	_	NNP
33912	19	25	The	the	DT
33912	19	26	development	development	NN
33912	19	27	of	of	IN
33912	19	28	structural	structural	JJ
33912	19	29	engineering	engineering	NN
33912	19	30	has	have	VBZ
33912	19	31	always	always	RB
33912	19	32	been	be	VBN
33912	19	33	as	as	RB
33912	19	34	dependent	dependent	JJ
33912	19	35	upon	upon	IN
33912	19	36	the	the	DT
33912	19	37	availability	availability	NN
33912	19	38	of	of	IN
33912	19	39	materials	material	NNS
33912	19	40	as	as	IN
33912	19	41	upon	upon	IN
33912	19	42	the	the	DT
33912	19	43	expansion	expansion	NN
33912	19	44	of	of	IN
33912	19	45	theoretical	theoretical	JJ
33912	19	46	concepts	concept	NNS
33912	19	47	.	.	.
33912	20	1	Perhaps	perhaps	RB
33912	20	2	the	the	DT
33912	20	3	greatest	great	JJS
33912	20	4	single	single	JJ
33912	20	5	step	step	NN
33912	20	6	in	in	IN
33912	20	7	the	the	DT
33912	20	8	history	history	NN
33912	20	9	of	of	IN
33912	20	10	civil	civil	JJ
33912	20	11	engineering	engineering	NN
33912	20	12	was	be	VBD
33912	20	13	the	the	DT
33912	20	14	introduction	introduction	NN
33912	20	15	of	of	IN
33912	20	16	iron	iron	NN
33912	20	17	as	as	IN
33912	20	18	a	a	DT
33912	20	19	primary	primary	JJ
33912	20	20	structural	structural	JJ
33912	20	21	material	material	NN
33912	20	22	in	in	IN
33912	20	23	the	the	DT
33912	20	24	19th	19th	JJ
33912	20	25	century	century	NN
33912	20	26	;	;	:
33912	20	27	it	-PRON-	PRP
33912	20	28	quickly	quickly	RB
33912	20	29	released	release	VBD
33912	20	30	the	the	DT
33912	20	31	bridge	bridge	NN
33912	20	32	and	and	CC
33912	20	33	the	the	DT
33912	20	34	building	building	NN
33912	20	35	from	from	IN
33912	20	36	the	the	DT
33912	20	37	confines	confine	NNS
33912	20	38	of	of	IN
33912	20	39	a	a	DT
33912	20	40	technology	technology	NN
33912	20	41	based	base	VBN
33912	20	42	upon	upon	IN
33912	20	43	the	the	DT
33912	20	44	limited	limited	JJ
33912	20	45	strength	strength	NN
33912	20	46	of	of	IN
33912	20	47	masonry	masonry	NN
33912	20	48	and	and	CC
33912	20	49	wood	wood	NN
33912	20	50	.	.	.
33912	20	51	_	_	NNP
33912	20	52	_	_	NNP
33912	20	53	Wendel	Wendel	NNP
33912	20	54	Bollman	Bollman	NNP
33912	20	55	,	,	,
33912	20	56	self	self	NN
33912	20	57	-	-	HYPH
33912	20	58	taught	teach	VBN
33912	20	59	Baltimore	Baltimore	NNP
33912	20	60	civil	civil	JJ
33912	20	61	engineer	engineer	NN
33912	20	62	,	,	,
33912	20	63	was	be	VBD
33912	20	64	the	the	DT
33912	20	65	first	first	JJ
33912	20	66	to	to	TO
33912	20	67	evolve	evolve	VB
33912	20	68	a	a	DT
33912	20	69	system	system	NN
33912	20	70	of	of	IN
33912	20	71	bridging	bridge	VBG
33912	20	72	in	in	IN
33912	20	73	iron	iron	NN
33912	20	74	to	to	TO
33912	20	75	be	be	VB
33912	20	76	consistently	consistently	RB
33912	20	77	used	use	VBN
33912	20	78	on	on	IN
33912	20	79	an	an	DT
33912	20	80	American	american	JJ
33912	20	81	railroad	railroad	NN
33912	20	82	,	,	,
33912	20	83	becoming	become	VBG
33912	20	84	one	one	CD
33912	20	85	of	of	IN
33912	20	86	the	the	DT
33912	20	87	pioneers	pioneer	NNS
33912	20	88	who	who	WP
33912	20	89	ushered	usher	VBD
33912	20	90	in	in	RP
33912	20	91	the	the	DT
33912	20	92	modern	modern	JJ
33912	20	93	period	period	NN
33912	20	94	of	of	IN
33912	20	95	structural	structural	JJ
33912	20	96	engineering	engineering	NN
33912	20	97	.	.	.
33912	20	98	_	_	NNP
33912	20	99	THE	the	DT
33912	20	100	AUTHOR	AUTHOR	NNP
33912	20	101	:	:	:
33912	20	102	_	_	NNP
33912	20	103	Robert	Robert	NNP
33912	20	104	M.	M.	NNP
33912	20	105	Vogel	Vogel	NNP
33912	20	106	is	be	VBZ
33912	20	107	curator	curator	NN
33912	20	108	of	of	IN
33912	20	109	civil	civil	JJ
33912	20	110	engineering	engineering	NN
33912	20	111	in	in	IN
33912	20	112	the	the	DT
33912	20	113	Smithsonian	Smithsonian	NNP
33912	20	114	Institution	Institution	NNP
33912	20	115	's	's	POS
33912	20	116	Museum	Museum	NNP
33912	20	117	of	of	IN
33912	20	118	History	History	NNP
33912	20	119	and	and	CC
33912	20	120	Technology	Technology	NNP
33912	20	121	.	.	.
33912	20	122	_	_	NNP
33912	20	123	Wendel	Wendel	NNP
33912	20	124	Bollman	Bollman	NNP
33912	20	125	's	's	POS
33912	20	126	name	name	NN
33912	20	127	survives	survive	VBZ
33912	20	128	today	today	NN
33912	20	129	solely	solely	RB
33912	20	130	in	in	IN
33912	20	131	association	association	NN
33912	20	132	with	with	IN
33912	20	133	the	the	DT
33912	20	134	Bollman	Bollman	NNP
33912	20	135	truss	truss	NN
33912	20	136	,	,	,
33912	20	137	and	and	CC
33912	20	138	even	even	RB
33912	20	139	in	in	IN
33912	20	140	this	this	DT
33912	20	141	respect	respect	NN
33912	20	142	is	be	VBZ
33912	20	143	known	know	VBN
33912	20	144	only	only	RB
33912	20	145	to	to	IN
33912	20	146	a	a	DT
33912	20	147	few	few	JJ
33912	20	148	older	old	JJR
33912	20	149	civil	civil	JJ
33912	20	150	and	and	CC
33912	20	151	railroad	railroad	NN
33912	20	152	engineers	engineer	NNS
33912	20	153	.	.	.
33912	21	1	The	the	DT
33912	21	2	Bollman	Bollman	NNP
33912	21	3	system	system	NN
33912	21	4	of	of	IN
33912	21	5	trussing	trussing	NN
33912	21	6	,	,	,
33912	21	7	along	along	IN
33912	21	8	with	with	IN
33912	21	9	those	those	DT
33912	21	10	of	of	IN
33912	21	11	Whipple	Whipple	NNP
33912	21	12	and	and	CC
33912	21	13	Fink	Fink	NNP
33912	21	14	,	,	,
33912	21	15	may	may	MD
33912	21	16	be	be	VB
33912	21	17	said	say	VBN
33912	21	18	to	to	TO
33912	21	19	have	have	VB
33912	21	20	introduced	introduce	VBN
33912	21	21	the	the	DT
33912	21	22	great	great	JJ
33912	21	23	age	age	NN
33912	21	24	of	of	IN
33912	21	25	the	the	DT
33912	21	26	metal	metal	NN
33912	21	27	bridge	bridge	NN
33912	21	28	,	,	,
33912	21	29	and	and	CC
33912	21	30	thus	thus	RB
33912	21	31	,	,	,
33912	21	32	directly	directly	RB
33912	21	33	,	,	,
33912	21	34	the	the	DT
33912	21	35	modern	modern	JJ
33912	21	36	period	period	NN
33912	21	37	of	of	IN
33912	21	38	civil	civil	JJ
33912	21	39	engineering	engineering	NN
33912	21	40	.	.	.
33912	22	1	Bollman	Bollman	NNP
33912	22	2	's	's	POS
33912	22	3	bridge	bridge	NN
33912	22	4	truss	truss	NN
33912	22	5	,	,	,
33912	22	6	of	of	IN
33912	22	7	which	which	WDT
33912	22	8	the	the	DT
33912	22	9	first	first	JJ
33912	22	10	example	example	NN
33912	22	11	was	be	VBD
33912	22	12	built	build	VBN
33912	22	13	in	in	IN
33912	22	14	1850	1850	CD
33912	22	15	,	,	,
33912	22	16	has	have	VBZ
33912	22	17	the	the	DT
33912	22	18	very	very	RB
33912	22	19	significant	significant	JJ
33912	22	20	distinction	distinction	NN
33912	22	21	of	of	IN
33912	22	22	being	be	VBG
33912	22	23	the	the	DT
33912	22	24	first	first	JJ
33912	22	25	bridging	bridge	VBG
33912	22	26	system	system	NN
33912	22	27	in	in	IN
33912	22	28	the	the	DT
33912	22	29	world	world	NN
33912	22	30	employing	employ	VBG
33912	22	31	iron	iron	NN
33912	22	32	in	in	IN
33912	22	33	all	all	DT
33912	22	34	of	of	IN
33912	22	35	its	-PRON-	PRP$
33912	22	36	principal	principal	JJ
33912	22	37	structural	structural	JJ
33912	22	38	members	member	NNS
33912	22	39	that	that	WDT
33912	22	40	was	be	VBD
33912	22	41	used	use	VBN
33912	22	42	consistently	consistently	RB
33912	22	43	on	on	IN
33912	22	44	a	a	DT
33912	22	45	railroad	railroad	NN
33912	22	46	.	.	.
33912	23	1	The	the	DT
33912	23	2	importance	importance	NN
33912	23	3	of	of	IN
33912	23	4	the	the	DT
33912	23	5	transition	transition	NN
33912	23	6	from	from	IN
33912	23	7	wood	wood	NN
33912	23	8	to	to	IN
33912	23	9	iron	iron	NN
33912	23	10	as	as	IN
33912	23	11	a	a	DT
33912	23	12	structural	structural	JJ
33912	23	13	and	and	CC
33912	23	14	bridge	bridge	NN
33912	23	15	building	building	NN
33912	23	16	material	material	NN
33912	23	17	is	be	VBZ
33912	23	18	generally	generally	RB
33912	23	19	recognized	recognize	VBN
33912	23	20	,	,	,
33912	23	21	but	but	CC
33912	23	22	it	-PRON-	PRP
33912	23	23	may	may	MD
33912	23	24	be	be	VB
33912	23	25	well	well	JJ
33912	23	26	to	to	TO
33912	23	27	mention	mention	VB
33912	23	28	certain	certain	JJ
33912	23	29	aspects	aspect	NNS
33912	23	30	of	of	IN
33912	23	31	this	this	DT
33912	23	32	change	change	NN
33912	23	33	.	.	.
33912	24	1	The	the	DT
33912	24	2	tradition	tradition	NN
33912	24	3	of	of	IN
33912	24	4	masonry	masonry	NNP
33912	24	5	bridge	bridge	NNP
33912	24	6	construction	construction	NN
33912	24	7	never	never	RB
33912	24	8	attained	attain	VBD
33912	24	9	the	the	DT
33912	24	10	great	great	JJ
33912	24	11	strength	strength	NN
33912	24	12	in	in	IN
33912	24	13	this	this	DT
33912	24	14	country	country	NN
33912	24	15	which	which	WDT
33912	24	16	it	-PRON-	PRP
33912	24	17	held	hold	VBD
33912	24	18	in	in	IN
33912	24	19	Europe	Europe	NNP
33912	24	20	,	,	,
33912	24	21	despite	despite	IN
33912	24	22	a	a	DT
33912	24	23	number	number	NN
33912	24	24	of	of	IN
33912	24	25	notable	notable	JJ
33912	24	26	exceptions	exception	NNS
33912	24	27	.	.	.
33912	25	1	There	there	EX
33912	25	2	were	be	VBD
33912	25	3	several	several	JJ
33912	25	4	reasons	reason	NNS
33912	25	5	for	for	IN
33912	25	6	this	this	DT
33912	25	7	.	.	.
33912	26	1	From	from	IN
33912	26	2	the	the	DT
33912	26	3	very	very	JJ
33912	26	4	beginning	beginning	NN
33912	26	5	of	of	IN
33912	26	6	colonization	colonization	NN
33912	26	7	,	,	,
33912	26	8	capital	capital	NN
33912	26	9	was	be	VBD
33912	26	10	scarce	scarce	JJ
33912	26	11	,	,	,
33912	26	12	a	a	DT
33912	26	13	condition	condition	NN
33912	26	14	that	that	WDT
33912	26	15	prevailed	prevail	VBD
33912	26	16	until	until	IN
33912	26	17	well	well	RB
33912	26	18	into	into	IN
33912	26	19	the	the	DT
33912	26	20	19th	19th	JJ
33912	26	21	century	century	NN
33912	26	22	and	and	CC
33912	26	23	which	which	WDT
33912	26	24	prohibited	prohibit	VBD
33912	26	25	the	the	DT
33912	26	26	use	use	NN
33912	26	27	of	of	IN
33912	26	28	masonry	masonry	NN
33912	26	29	because	because	IN
33912	26	30	of	of	IN
33912	26	31	the	the	DT
33912	26	32	extremely	extremely	RB
33912	26	33	high	high	JJ
33912	26	34	costs	cost	NNS
33912	26	35	of	of	IN
33912	26	36	labor	labor	NN
33912	26	37	and	and	CC
33912	26	38	transport	transport	NN
33912	26	39	.	.	.
33912	27	1	An	an	DT
33912	27	2	even	even	RB
33912	27	3	more	more	RBR
33912	27	4	important	important	JJ
33912	27	5	economic	economic	JJ
33912	27	6	consideration	consideration	NN
33912	27	7	was	be	VBD
33912	27	8	the	the	DT
33912	27	9	rapidity	rapidity	NN
33912	27	10	with	with	IN
33912	27	11	which	which	WDT
33912	27	12	it	-PRON-	PRP
33912	27	13	was	be	VBD
33912	27	14	necessary	necessary	JJ
33912	27	15	to	to	TO
33912	27	16	extend	extend	VB
33912	27	17	the	the	DT
33912	27	18	construction	construction	NN
33912	27	19	of	of	IN
33912	27	20	railways	railway	NNS
33912	27	21	during	during	IN
33912	27	22	their	-PRON-	PRP$
33912	27	23	pioneer	pioneer	NN
33912	27	24	years	year	NNS
33912	27	25	.	.	.
33912	28	1	Unlike	unlike	IN
33912	28	2	the	the	DT
33912	28	3	early	early	JJ
33912	28	4	English	english	JJ
33912	28	5	and	and	CC
33912	28	6	European	european	JJ
33912	28	7	railways	railway	NNS
33912	28	8	,	,	,
33912	28	9	which	which	WDT
33912	28	10	invariably	invariably	RB
33912	28	11	traversed	traverse	VBD
33912	28	12	areas	area	NNS
33912	28	13	of	of	IN
33912	28	14	dense	dense	JJ
33912	28	15	population	population	NN
33912	28	16	and	and	CC
33912	28	17	industrial	industrial	JJ
33912	28	18	activity	activity	NN
33912	28	19	,	,	,
33912	28	20	and	and	CC
33912	28	21	were	be	VBD
33912	28	22	thus	thus	RB
33912	28	23	assured	assure	VBN
33912	28	24	of	of	IN
33912	28	25	a	a	DT
33912	28	26	significant	significant	JJ
33912	28	27	financial	financial	JJ
33912	28	28	return	return	NN
33912	28	29	almost	almost	RB
33912	28	30	from	from	IN
33912	28	31	the	the	DT
33912	28	32	moment	moment	NN
33912	28	33	that	that	IN
33912	28	34	the	the	DT
33912	28	35	first	first	JJ
33912	28	36	rail	rail	NN
33912	28	37	was	be	VBD
33912	28	38	down	down	RB
33912	28	39	,	,	,
33912	28	40	the	the	DT
33912	28	41	Baltimore	Baltimore	NNP
33912	28	42	and	and	CC
33912	28	43	Ohio	Ohio	NNP
33912	28	44	and	and	CC
33912	28	45	its	-PRON-	PRP$
33912	28	46	contemporaries	contemporary	NNS
33912	28	47	were	be	VBD
33912	28	48	launched	launch	VBN
33912	28	49	upon	upon	IN
33912	28	50	an	an	DT
33912	28	51	entirely	entirely	RB
33912	28	52	different	different	JJ
33912	28	53	commercial	commercial	JJ
33912	28	54	prospect	prospect	NN
33912	28	55	.	.	.
33912	29	1	Their	-PRON-	PRP$
33912	29	2	principal	principal	JJ
33912	29	3	business	business	NN
33912	29	4	consisted	consist	VBD
33912	29	5	not	not	RB
33912	29	6	so	so	RB
33912	29	7	much	much	JJ
33912	29	8	in	in	IN
33912	29	9	along	along	IN
33912	29	10	-	-	HYPH
33912	29	11	the	the	DT
33912	29	12	-	-	HYPH
33912	29	13	line	line	NN
33912	29	14	transactions	transaction	NNS
33912	29	15	as	as	IN
33912	29	16	in	in	IN
33912	29	17	haulage	haulage	NN
33912	29	18	between	between	IN
33912	29	19	principal	principal	JJ
33912	29	20	terminals	terminal	NNS
33912	29	21	separated	separate	VBN
33912	29	22	by	by	IN
33912	29	23	great	great	JJ
33912	29	24	and	and	CC
33912	29	25	largely	largely	RB
33912	29	26	desolate	desolate	JJ
33912	29	27	expanses	expanse	NNS
33912	29	28	.	.	.
33912	30	1	This	this	DT
33912	30	2	meant	mean	VBD
33912	30	3	that	that	DT
33912	30	4	income	income	NN
33912	30	5	was	be	VBD
33912	30	6	severely	severely	RB
33912	30	7	limited	limited	JJ
33912	30	8	until	until	IN
33912	30	9	the	the	DT
33912	30	10	line	line	NN
33912	30	11	was	be	VBD
33912	30	12	virtually	virtually	RB
33912	30	13	complete	complete	JJ
33912	30	14	from	from	IN
33912	30	15	end	end	NN
33912	30	16	to	to	IN
33912	30	17	end	end	NN
33912	30	18	,	,	,
33912	30	19	and	and	CC
33912	30	20	it	-PRON-	PRP
33912	30	21	meant	mean	VBD
33912	30	22	that	that	DT
33912	30	23	commencement	commencement	NN
33912	30	24	of	of	IN
33912	30	25	return	return	NN
33912	30	26	upon	upon	IN
33912	30	27	the	the	DT
33912	30	28	initial	initial	JJ
33912	30	29	investment	investment	NN
33912	30	30	was	be	VBD
33912	30	31	entirely	entirely	RB
33912	30	32	dependent	dependent	JJ
33912	30	33	upon	upon	IN
33912	30	34	the	the	DT
33912	30	35	speed	speed	NN
33912	30	36	of	of	IN
33912	30	37	survey	survey	NN
33912	30	38	,	,	,
33912	30	39	graduation	graduation	NN
33912	30	40	,	,	,
33912	30	41	tunneling	tunneling	NN
33912	30	42	,	,	,
33912	30	43	and	and	CC
33912	30	44	bridging	bridge	VBG
33912	30	45	.	.	.
33912	31	1	[	[	-LRB-
33912	31	2	Illustration	illustration	NN
33912	31	3	:	:	:
33912	31	4	Figure	figure	NN
33912	31	5	2.--MODEL	2.--MODEL	NNP
33912	31	6	OF	of	IN
33912	31	7	B.	B.	NNP
33912	31	8	H.	H.	NNP
33912	31	9	LATROBE	LATROBE	NNP
33912	31	10	'S	'S	NNP
33912	31	11	TRUSS	TRUSS	NNP
33912	31	12	,	,	,
33912	31	13	built	build	VBN
33912	31	14	in	in	IN
33912	31	15	1838	1838	CD
33912	31	16	,	,	,
33912	31	17	over	over	IN
33912	31	18	the	the	DT
33912	31	19	Patapsco	Patapsco	NNP
33912	31	20	River	River	NNP
33912	31	21	at	at	IN
33912	31	22	Elysville	Elysville	NNP
33912	31	23	(	(	-LRB-
33912	31	24	now	now	RB
33912	31	25	Daniels	Daniels	NNP
33912	31	26	)	)	-RRB-
33912	31	27	,	,	,
33912	31	28	Maryland	Maryland	NNP
33912	31	29	.	.	.
33912	32	1	(	(	-LRB-
33912	32	2	_	_	NNP
33912	32	3	Photo	Photo	NNP
33912	32	4	courtesy	courtesy	NN
33912	32	5	of	of	IN
33912	32	6	Baltimore	Baltimore	NNP
33912	32	7	and	and	CC
33912	32	8	Ohio	Ohio	NNP
33912	32	9	Railroad	Railroad	NNP
33912	32	10	.	.	.
33912	32	11	_	_	NNP
33912	32	12	)	)	-RRB-
33912	32	13	]	]	-RRB-
33912	32	14	The	the	DT
33912	32	15	need	need	NN
33912	32	16	for	for	IN
33912	32	17	speed	speed	NN
33912	32	18	,	,	,
33912	32	19	the	the	DT
33912	32	20	general	general	JJ
33912	32	21	attenuation	attenuation	NN
33912	32	22	of	of	IN
33912	32	23	capital	capital	NN
33912	32	24	,	,	,
33912	32	25	and	and	CC
33912	32	26	the	the	DT
33912	32	27	simple	simple	JJ
33912	32	28	fact	fact	NN
33912	32	29	that	that	IN
33912	32	30	all	all	PDT
33912	32	31	the	the	DT
33912	32	32	early	early	JJ
33912	32	33	railroads	railroad	NNS
33912	32	34	traversed	traverse	VBD
33912	32	35	thickly	thickly	RB
33912	32	36	forested	forest	VBN
33912	32	37	areas	area	NNS
33912	32	38	rendered	render	VBN
33912	32	39	wood	wood	NN
33912	32	40	the	the	DT
33912	32	41	most	most	RBS
33912	32	42	logical	logical	JJ
33912	32	43	material	material	NN
33912	32	44	for	for	IN
33912	32	45	bridge	bridge	NN
33912	32	46	and	and	CC
33912	32	47	other	other	JJ
33912	32	48	construction	construction	NN
33912	32	49	,	,	,
33912	32	50	both	both	CC
33912	32	51	temporary	temporary	JJ
33912	32	52	and	and	CC
33912	32	53	permanent	permanent	JJ
33912	32	54	.	.	.
33912	33	1	The	the	DT
33912	33	2	use	use	NN
33912	33	3	of	of	IN
33912	33	4	wood	wood	NN
33912	33	5	as	as	IN
33912	33	6	a	a	DT
33912	33	7	bridge	bridge	NN
33912	33	8	material	material	NN
33912	33	9	did	do	VBD
33912	33	10	not	not	RB
33912	33	11	,	,	,
33912	33	12	of	of	IN
33912	33	13	course	course	NN
33912	33	14	,	,	,
33912	33	15	originate	originate	VB
33912	33	16	with	with	IN
33912	33	17	the	the	DT
33912	33	18	railroads	railroad	NNS
33912	33	19	,	,	,
33912	33	20	or	or	CC
33912	33	21	,	,	,
33912	33	22	for	for	IN
33912	33	23	that	that	DT
33912	33	24	matter	matter	NN
33912	33	25	,	,	,
33912	33	26	in	in	IN
33912	33	27	this	this	DT
33912	33	28	country	country	NN
33912	33	29	.	.	.
33912	34	1	The	the	DT
33912	34	2	heavily	heavily	RB
33912	34	3	wooded	woode	VBN
33912	34	4	European	european	JJ
33912	34	5	countries	country	NNS
33912	34	6	--	--	:
33912	34	7	Switzerland	Switzerland	NNP
33912	34	8	in	in	IN
33912	34	9	particular	particular	JJ
33912	34	10	--	--	:
33912	34	11	had	have	VBD
33912	34	12	a	a	DT
33912	34	13	strong	strong	JJ
33912	34	14	tradition	tradition	NN
33912	34	15	of	of	IN
33912	34	16	bridge	bridge	NN
33912	34	17	construction	construction	NN
33912	34	18	in	in	IN
33912	34	19	timber	timber	NN
33912	34	20	from	from	IN
33912	34	21	the	the	DT
33912	34	22	Renaissance	Renaissance	NNP
33912	34	23	on	on	RB
33912	34	24	,	,	,
33912	34	25	and	and	CC
33912	34	26	naturally	naturally	RB
33912	34	27	a	a	DT
33912	34	28	certain	certain	JJ
33912	34	29	amount	amount	NN
33912	34	30	of	of	IN
33912	34	31	this	this	DT
33912	34	32	technique	technique	NN
33912	34	33	found	find	VBD
33912	34	34	its	-PRON-	PRP$
33912	34	35	way	way	NN
33912	34	36	to	to	IN
33912	34	37	the	the	DT
33912	34	38	New	New	NNP
33912	34	39	World	World	NNP
33912	34	40	with	with	IN
33912	34	41	the	the	DT
33912	34	42	colonials	colonial	NNS
33912	34	43	and	and	CC
33912	34	44	immigrants	immigrant	NNS
33912	34	45	.	.	.
33912	35	1	America	America	NNP
33912	35	2	's	's	POS
33912	35	3	highway	highway	NN
33912	35	4	system	system	NN
33912	35	5	was	be	VBD
33912	35	6	meager	meager	JJ
33912	35	7	until	until	IN
33912	35	8	about	about	IN
33912	35	9	the	the	DT
33912	35	10	time	time	NN
33912	35	11	the	the	DT
33912	35	12	railroad	railroad	NN
33912	35	13	age	age	NN
33912	35	14	itself	-PRON-	PRP
33912	35	15	was	be	VBD
33912	35	16	beginning	begin	VBG
33912	35	17	.	.	.
33912	36	1	However	however	RB
33912	36	2	,	,	,
33912	36	3	by	by	IN
33912	36	4	1812	1812	CD
33912	36	5	there	there	EX
33912	36	6	were	be	VBD
33912	36	7	,	,	,
33912	36	8	along	along	IN
33912	36	9	the	the	DT
33912	36	10	eastern	eastern	NNP
33912	36	11	seaboard	seaboard	NNP
33912	36	12	,	,	,
33912	36	13	a	a	DT
33912	36	14	number	number	NN
33912	36	15	of	of	IN
33912	36	16	fine	fine	JJ
33912	36	17	timber	timber	NN
33912	36	18	bridges	bridge	NNS
33912	36	19	of	of	IN
33912	36	20	truly	truly	RB
33912	36	21	remarkable	remarkable	JJ
33912	36	22	structural	structural	JJ
33912	36	23	sophistication	sophistication	NN
33912	36	24	and	and	CC
33912	36	25	workmanship	workmanship	NN
33912	36	26	.	.	.
33912	37	1	It	-PRON-	PRP
33912	37	2	was	be	VBD
33912	37	3	just	just	RB
33912	37	4	previous	previous	JJ
33912	37	5	to	to	IN
33912	37	6	the	the	DT
33912	37	7	advent	advent	NN
33912	37	8	of	of	IN
33912	37	9	the	the	DT
33912	37	10	railroads	railroad	NNS
33912	37	11	that	that	WDT
33912	37	12	the	the	DT
33912	37	13	erection	erection	NN
33912	37	14	of	of	IN
33912	37	15	highway	highway	NN
33912	37	16	bridges	bridge	NNS
33912	37	17	in	in	IN
33912	37	18	this	this	DT
33912	37	19	country	country	NN
33912	37	20	began	begin	VBD
33912	37	21	to	to	TO
33912	37	22	pass	pass	VB
33912	37	23	from	from	IN
33912	37	24	an	an	DT
33912	37	25	art	art	NN
33912	37	26	to	to	IN
33912	37	27	a	a	DT
33912	37	28	science	science	NN
33912	37	29	.	.	.
33912	38	1	And	and	CC
33912	38	2	an	an	DT
33912	38	3	art	art	NN
33912	38	4	it	-PRON-	PRP
33912	38	5	had	have	VBD
33912	38	6	been	be	VBN
33912	38	7	in	in	IN
33912	38	8	the	the	DT
33912	38	9	hands	hand	NNS
33912	38	10	of	of	IN
33912	38	11	the	the	DT
33912	38	12	group	group	NN
33912	38	13	of	of	IN
33912	38	14	skilled	skilled	JJ
33912	38	15	but	but	CC
33912	38	16	unschooled	unschooled	JJ
33912	38	17	master	master	NN
33912	38	18	carpenters	carpenter	NNS
33912	38	19	and	and	CC
33912	38	20	masons	mason	NNS
33912	38	21	who	who	WP
33912	38	22	built	build	VBD
33912	38	23	largely	largely	RB
33912	38	24	from	from	IN
33912	38	25	an	an	DT
33912	38	26	intuitive	intuitive	JJ
33912	38	27	sense	sense	NN
33912	38	28	of	of	IN
33912	38	29	proportion	proportion	NN
33912	38	30	,	,	,
33912	38	31	stress	stress	NN
33912	38	32	,	,	,
33912	38	33	and	and	CC
33912	38	34	the	the	DT
33912	38	35	general	general	JJ
33912	38	36	"	"	``
33912	38	37	fitness	fitness	NN
33912	38	38	of	of	IN
33912	38	39	things	thing	NNS
33912	38	40	.	.	.
33912	38	41	"	"	''
33912	39	1	It	-PRON-	PRP
33912	39	2	passed	pass	VBD
33912	39	3	into	into	IN
33912	39	4	an	an	DT
33912	39	5	exact	exact	JJ
33912	39	6	science	science	NN
33912	39	7	under	under	IN
33912	39	8	the	the	DT
33912	39	9	guidance	guidance	NN
33912	39	10	of	of	IN
33912	39	11	a	a	DT
33912	39	12	small	small	JJ
33912	39	13	number	number	NN
33912	39	14	of	of	IN
33912	39	15	men	man	NNS
33912	39	16	trained	train	VBN
33912	39	17	at	at	IN
33912	39	18	first	first	RB
33912	39	19	in	in	IN
33912	39	20	the	the	DT
33912	39	21	scientific	scientific	JJ
33912	39	22	and	and	CC
33912	39	23	technical	technical	JJ
33912	39	24	schools	school	NNS
33912	39	25	of	of	IN
33912	39	26	Europe	Europe	NNP
33912	39	27	,	,	,
33912	39	28	and	and	CC
33912	39	29	,	,	,
33912	39	30	after	after	IN
33912	39	31	about	about	IN
33912	39	32	1820	1820	CD
33912	39	33	,	,	,
33912	39	34	in	in	IN
33912	39	35	the	the	DT
33912	39	36	few	few	JJ
33912	39	37	institutions	institution	NNS
33912	39	38	then	then	RB
33912	39	39	established	establish	VBN
33912	39	40	in	in	IN
33912	39	41	America	America	NNP
33912	39	42	that	that	WDT
33912	39	43	offered	offer	VBD
33912	39	44	technical	technical	JJ
33912	39	45	instruction	instruction	NN
33912	39	46	.	.	.
33912	40	1	The	the	DT
33912	40	2	increasing	increase	VBG
33912	40	3	number	number	NN
33912	40	4	of	of	IN
33912	40	5	trained	train	VBN
33912	40	6	engineers	engineer	NNS
33912	40	7	at	at	IN
33912	40	8	first	first	JJ
33912	40	9	affected	affect	VBN
33912	40	10	highway	highway	NN
33912	40	11	bridge	bridge	NN
33912	40	12	construction	construction	NN
33912	40	13	not	not	RB
33912	40	14	so	so	RB
33912	40	15	much	much	JJ
33912	40	16	in	in	IN
33912	40	17	the	the	DT
33912	40	18	materials	material	NNS
33912	40	19	used	use	VBN
33912	40	20	but	but	CC
33912	40	21	in	in	IN
33912	40	22	the	the	DT
33912	40	23	way	way	NN
33912	40	24	they	-PRON-	PRP
33912	40	25	were	be	VBD
33912	40	26	assembled	assemble	VBN
33912	40	27	.	.	.
33912	41	1	In	in	IN
33912	41	2	a	a	DT
33912	41	3	bridge	bridge	NN
33912	41	4	designed	design	VBN
33912	41	5	by	by	IN
33912	41	6	a	a	DT
33912	41	7	self	self	NN
33912	41	8	-	-	HYPH
33912	41	9	taught	teach	VBN
33912	41	10	constructor	constructor	NN
33912	41	11	,	,	,
33912	41	12	the	the	DT
33912	41	13	cheapness	cheapness	NN
33912	41	14	of	of	IN
33912	41	15	wood	wood	NN
33912	41	16	made	make	VBD
33912	41	17	it	-PRON-	PRP
33912	41	18	entirely	entirely	RB
33912	41	19	feasible	feasible	JJ
33912	41	20	to	to	TO
33912	41	21	proportion	proportion	VB
33912	41	22	the	the	DT
33912	41	23	members	member	NNS
33912	41	24	by	by	IN
33912	41	25	enlarging	enlarge	VBG
33912	41	26	them	-PRON-	PRP
33912	41	27	to	to	IN
33912	41	28	the	the	DT
33912	41	29	point	point	NN
33912	41	30	where	where	WRB
33912	41	31	there	there	EX
33912	41	32	could	could	MD
33912	41	33	be	be	VB
33912	41	34	no	no	DT
33912	41	35	question	question	NN
33912	41	36	as	as	IN
33912	41	37	to	to	IN
33912	41	38	their	-PRON-	PRP$
33912	41	39	structural	structural	JJ
33912	41	40	adequacy	adequacy	NN
33912	41	41	.	.	.
33912	42	1	The	the	DT
33912	42	2	trained	train	VBN
33912	42	3	engineer	engineer	NN
33912	42	4	,	,	,
33912	42	5	on	on	IN
33912	42	6	the	the	DT
33912	42	7	other	other	JJ
33912	42	8	hand	hand	NN
33912	42	9	,	,	,
33912	42	10	could	could	MD
33912	42	11	design	design	VB
33912	42	12	from	from	IN
33912	42	13	the	the	DT
33912	42	14	standpoint	standpoint	NN
33912	42	15	of	of	IN
33912	42	16	determining	determine	VBG
33912	42	17	the	the	DT
33912	42	18	entire	entire	JJ
33912	42	19	load	load	NN
33912	42	20	and	and	CC
33912	42	21	then	then	RB
33912	42	22	proportioning	proportion	VBG
33912	42	23	each	each	DT
33912	42	24	element	element	NN
33912	42	25	according	accord	VBG
33912	42	26	to	to	IN
33912	42	27	the	the	DT
33912	42	28	increment	increment	NN
33912	42	29	of	of	IN
33912	42	30	stress	stress	NN
33912	42	31	upon	upon	IN
33912	42	32	it	-PRON-	PRP
33912	42	33	and	and	CC
33912	42	34	to	to	IN
33912	42	35	the	the	DT
33912	42	36	unit	unit	NN
33912	42	37	capacity	capacity	NN
33912	42	38	of	of	IN
33912	42	39	the	the	DT
33912	42	40	material	material	NN
33912	42	41	.	.	.
33912	43	1	By	by	IN
33912	43	2	the	the	DT
33912	43	3	time	time	NN
33912	43	4	railroads	railroad	NNS
33912	43	5	had	have	VBD
33912	43	6	started	start	VBN
33912	43	7	expanding	expand	VBG
33912	43	8	to	to	IN
33912	43	9	the	the	DT
33912	43	10	West	West	NNP
33912	43	11	there	there	EX
33912	43	12	had	have	VBD
33912	43	13	been	be	VBN
33912	43	14	sufficient	sufficient	JJ
33912	43	15	experience	experience	NN
33912	43	16	with	with	IN
33912	43	17	the	the	DT
33912	43	18	half	half	JJ
33912	43	19	dozen	dozen	NN
33912	43	20	practical	practical	JJ
33912	43	21	timber	timber	NN
33912	43	22	truss	truss	NN
33912	43	23	systems	system	NNS
33912	43	24	by	by	IN
33912	43	25	then	then	RB
33912	43	26	evolved	evolve	VBD
33912	43	27	,	,	,
33912	43	28	that	that	IN
33912	43	29	there	there	EX
33912	43	30	was	be	VBD
33912	43	31	little	little	JJ
33912	43	32	difficulty	difficulty	NN
33912	43	33	in	in	IN
33912	43	34	translating	translate	VBG
33912	43	35	them	-PRON-	PRP
33912	43	36	into	into	IN
33912	43	37	bridges	bridge	NNS
33912	43	38	capable	capable	JJ
33912	43	39	of	of	IN
33912	43	40	supporting	support	VBG
33912	43	41	the	the	DT
33912	43	42	initial	initial	JJ
33912	43	43	light	light	JJ
33912	43	44	rail	rail	NN
33912	43	45	traffic	traffic	NN
33912	43	46	.	.	.
33912	44	1	In	in	IN
33912	44	2	spite	spite	NN
33912	44	3	of	of	IN
33912	44	4	its	-PRON-	PRP$
33912	44	5	inherent	inherent	JJ
33912	44	6	shortcomings	shortcoming	NNS
33912	44	7	,	,	,
33912	44	8	wood	wood	NN
33912	44	9	was	be	VBD
33912	44	10	so	so	RB
33912	44	11	adaptable	adaptable	JJ
33912	44	12	that	that	IN
33912	44	13	it	-PRON-	PRP
33912	44	14	met	meet	VBD
33912	44	15	almost	almost	RB
33912	44	16	perfectly	perfectly	RB
33912	44	17	the	the	DT
33912	44	18	needs	need	NNS
33912	44	19	of	of	IN
33912	44	20	the	the	DT
33912	44	21	railroads	railroad	NNS
33912	44	22	during	during	IN
33912	44	23	the	the	DT
33912	44	24	early	early	JJ
33912	44	25	decades	decade	NNS
33912	44	26	of	of	IN
33912	44	27	their	-PRON-	PRP$
33912	44	28	intense	intense	JJ
33912	44	29	expansion	expansion	NN
33912	44	30	,	,	,
33912	44	31	and	and	CC
33912	44	32	,	,	,
33912	44	33	in	in	IN
33912	44	34	fact	fact	NN
33912	44	35	,	,	,
33912	44	36	still	still	RB
33912	44	37	finds	find	VBZ
33912	44	38	limited	limited	JJ
33912	44	39	use	use	NN
33912	44	40	in	in	IN
33912	44	41	the	the	DT
33912	44	42	Northwest	Northwest	NNP
33912	44	43	.	.	.
33912	45	1	Early	Early	NNP
33912	45	2	Career	Career	NNP
33912	45	3	Wendel	Wendel	NNP
33912	45	4	Bollman	Bollman	NNP
33912	45	5	was	be	VBD
33912	45	6	born	bear	VBN
33912	45	7	in	in	IN
33912	45	8	Baltimore	Baltimore	NNP
33912	45	9	of	of	IN
33912	45	10	German	german	JJ
33912	45	11	parents	parent	NNS
33912	45	12	in	in	IN
33912	45	13	1814	1814	CD
33912	45	14	.	.	.
33912	46	1	His	-PRON-	PRP$
33912	46	2	father	father	NN
33912	46	3	was	be	VBD
33912	46	4	a	a	DT
33912	46	5	baker	baker	NN
33912	46	6	,	,	,
33912	46	7	who	who	WP
33912	46	8	in	in	IN
33912	46	9	the	the	DT
33912	46	10	same	same	JJ
33912	46	11	year	year	NN
33912	46	12	had	have	VBD
33912	46	13	aided	aid	VBN
33912	46	14	in	in	IN
33912	46	15	the	the	DT
33912	46	16	city	city	NN
33912	46	17	's	's	POS
33912	46	18	defense	defense	NN
33912	46	19	against	against	IN
33912	46	20	the	the	DT
33912	46	21	British	British	NNP
33912	46	22	.	.	.
33912	47	1	Wendel	Wendel	NNP
33912	47	2	's	's	POS
33912	47	3	education	education	NN
33912	47	4	,	,	,
33912	47	5	until	until	IN
33912	47	6	about	about	IN
33912	47	7	the	the	DT
33912	47	8	age	age	NN
33912	47	9	of	of	IN
33912	47	10	11	11	CD
33912	47	11	,	,	,
33912	47	12	was	be	VBD
33912	47	13	more	more	RBR
33912	47	14	or	or	CC
33912	47	15	less	less	RBR
33912	47	16	conventionally	conventionally	RB
33912	47	17	gained	gain	VBN
33912	47	18	in	in	IN
33912	47	19	public	public	JJ
33912	47	20	and	and	CC
33912	47	21	private	private	JJ
33912	47	22	schools	school	NNS
33912	47	23	in	in	IN
33912	47	24	Baltimore	Baltimore	NNP
33912	47	25	.	.	.
33912	48	1	He	-PRON-	PRP
33912	48	2	then	then	RB
33912	48	3	entered	enter	VBD
33912	48	4	into	into	IN
33912	48	5	informal	informal	JJ
33912	48	6	apprenticeship	apprenticeship	NN
33912	48	7	,	,	,
33912	48	8	first	first	RB
33912	48	9	to	to	IN
33912	48	10	an	an	DT
33912	48	11	apothecary	apothecary	NN
33912	48	12	in	in	IN
33912	48	13	Sheperdstown	Sheperdstown	NNP
33912	48	14	,	,	,
33912	48	15	Virginia	Virginia	NNP
33912	48	16	(	(	-LRB-
33912	48	17	now	now	RB
33912	48	18	West	West	NNP
33912	48	19	Virginia	Virginia	NNP
33912	48	20	)	)	-RRB-
33912	48	21	,	,	,
33912	48	22	and	and	CC
33912	48	23	then	then	RB
33912	48	24	to	to	IN
33912	48	25	one	one	CD
33912	48	26	in	in	IN
33912	48	27	Harpers	Harpers	NNP
33912	48	28	Ferry	Ferry	NNP
33912	48	29	.	.	.
33912	49	1	In	in	IN
33912	49	2	1826	1826	CD
33912	49	3	or	or	CC
33912	49	4	1827	1827	CD
33912	49	5	he	-PRON-	PRP
33912	49	6	became	become	VBD
33912	49	7	ill	ill	JJ
33912	49	8	and	and	CC
33912	49	9	returned	return	VBN
33912	49	10	to	to	IN
33912	49	11	Baltimore	Baltimore	NNP
33912	49	12	for	for	IN
33912	49	13	cure	cure	NN
33912	49	14	.	.	.
33912	50	1	From	from	IN
33912	50	2	that	that	DT
33912	50	3	time	time	NN
33912	50	4	on	on	IN
33912	50	5	his	-PRON-	PRP$
33912	50	6	education	education	NN
33912	50	7	was	be	VBD
33912	50	8	entirely	entirely	RB
33912	50	9	self	self	NN
33912	50	10	-	-	HYPH
33912	50	11	acquired	acquire	VBN
33912	50	12	.	.	.
33912	51	1	[	[	-LRB-
33912	51	2	Illustration	illustration	NN
33912	51	3	:	:	:
33912	51	4	Figure	figure	VB
33912	51	5	3.--TRUSSED	3.--TRUSSED	NNP
33912	51	6	BEAM	BEAM	NNP
33912	51	7	.	.	.
33912	51	8	]	]	-RRB-
33912	52	1	It	-PRON-	PRP
33912	52	2	is	be	VBZ
33912	52	3	of	of	IN
33912	52	4	interest	interest	NN
33912	52	5	,	,	,
33912	52	6	in	in	IN
33912	52	7	light	light	NN
33912	52	8	of	of	IN
33912	52	9	his	-PRON-	PRP$
33912	52	10	later	later	JJ
33912	52	11	career	career	NN
33912	52	12	,	,	,
33912	52	13	to	to	TO
33912	52	14	note	note	VB
33912	52	15	that	that	IN
33912	52	16	on	on	IN
33912	52	17	the	the	DT
33912	52	18	Fourth	Fourth	NNP
33912	52	19	of	of	IN
33912	52	20	July	July	NNP
33912	52	21	1828	1828	CD
33912	52	22	,	,	,
33912	52	23	he	-PRON-	PRP
33912	52	24	marched	march	VBD
33912	52	25	with	with	IN
33912	52	26	other	other	JJ
33912	52	27	boys	boy	NNS
33912	52	28	in	in	IN
33912	52	29	a	a	DT
33912	52	30	procession	procession	NN
33912	52	31	that	that	WDT
33912	52	32	was	be	VBD
33912	52	33	part	part	NN
33912	52	34	of	of	IN
33912	52	35	the	the	DT
33912	52	36	Baltimore	Baltimore	NNP
33912	52	37	and	and	CC
33912	52	38	Ohio	Ohio	NNP
33912	52	39	Railroad	Railroad	NNP
33912	52	40	's	's	POS
33912	52	41	cornerstone	cornerstone	NN
33912	52	42	-	-	HYPH
33912	52	43	laying	lay	VBG
33912	52	44	ceremony	ceremony	NN
33912	52	45	.	.	.
33912	53	1	Shortly	shortly	RB
33912	53	2	afterward	afterward	RB
33912	53	3	,	,	,
33912	53	4	he	-PRON-	PRP
33912	53	5	apprenticed	apprentice	VBD
33912	53	6	himself	-PRON-	PRP
33912	53	7	to	to	IN
33912	53	8	a	a	DT
33912	53	9	carpenter	carpenter	NN
33912	53	10	for	for	IN
33912	53	11	a	a	DT
33912	53	12	brief	brief	JJ
33912	53	13	time	time	NN
33912	53	14	,	,	,
33912	53	15	but	but	CC
33912	53	16	when	when	WRB
33912	53	17	the	the	DT
33912	53	18	work	work	NN
33912	53	19	slacked	slack	VBD
33912	53	20	off	off	RP
33912	53	21	he	-PRON-	PRP
33912	53	22	obtained	obtain	VBD
33912	53	23	work	work	NN
33912	53	24	with	with	IN
33912	53	25	the	the	DT
33912	53	26	B.	B.	NNP
33912	54	1	&	&	CC
33912	54	2	O.	O.	NNP
33912	55	1	The	the	DT
33912	55	2	right	right	JJ
33912	55	3	-	-	HYPH
33912	55	4	of	of	IN
33912	55	5	-	-	HYPH
33912	55	6	way	way	NN
33912	55	7	had	have	VBD
33912	55	8	been	be	VBN
33912	55	9	graded	grade	VBN
33912	55	10	for	for	IN
33912	55	11	about	about	RB
33912	55	12	five	five	CD
33912	55	13	miles	mile	NNS
33912	55	14	by	by	IN
33912	55	15	that	that	DT
33912	55	16	time	time	NN
33912	55	17	,	,	,
33912	55	18	but	but	CC
33912	55	19	no	no	DT
33912	55	20	rail	rail	NN
33912	55	21	was	be	VBD
33912	55	22	down	down	RB
33912	55	23	.	.	.
33912	56	1	The	the	DT
33912	56	2	boy	boy	NN
33912	56	3	was	be	VBD
33912	56	4	at	at	IN
33912	56	5	first	first	RB
33912	56	6	given	give	VBN
33912	56	7	manual	manual	JJ
33912	56	8	work	work	NN
33912	56	9	,	,	,
33912	56	10	but	but	CC
33912	56	11	soon	soon	RB
33912	56	12	advanced	advance	VBD
33912	56	13	to	to	IN
33912	56	14	rodman	rodman	NNP
33912	56	15	and	and	CC
33912	56	16	rapidly	rapidly	RB
33912	56	17	rose	rise	VBD
33912	56	18	as	as	IN
33912	56	19	he	-PRON-	PRP
33912	56	20	gained	gain	VBD
33912	56	21	facility	facility	NN
33912	56	22	with	with	IN
33912	56	23	the	the	DT
33912	56	24	surveying	surveying	NN
33912	56	25	apparatus	apparatus	NN
33912	56	26	.	.	.
33912	57	1	In	in	IN
33912	57	2	the	the	DT
33912	57	3	fall	fall	NN
33912	57	4	of	of	IN
33912	57	5	1829	1829	CD
33912	57	6	he	-PRON-	PRP
33912	57	7	participated	participate	VBD
33912	57	8	in	in	IN
33912	57	9	laying	lay	VBG
33912	57	10	the	the	DT
33912	57	11	first	first	JJ
33912	57	12	track	track	NN
33912	57	13	.	.	.
33912	58	1	As	as	IN
33912	58	2	his	-PRON-	PRP$
33912	58	3	mother	mother	NN
33912	58	4	was	be	VBD
33912	58	5	anxious	anxious	JJ
33912	58	6	that	that	IN
33912	58	7	he	-PRON-	PRP
33912	58	8	continue	continue	VB
33912	58	9	his	-PRON-	PRP$
33912	58	10	education	education	NN
33912	58	11	in	in	IN
33912	58	12	carpentry	carpentry	NN
33912	58	13	,	,	,
33912	58	14	he	-PRON-	PRP
33912	58	15	left	leave	VBD
33912	58	16	the	the	DT
33912	58	17	railroad	railroad	NN
33912	58	18	in	in	IN
33912	58	19	the	the	DT
33912	58	20	spring	spring	NN
33912	58	21	of	of	IN
33912	58	22	1830	1830	CD
33912	58	23	to	to	TO
33912	58	24	again	again	RB
33912	58	25	enter	enter	VB
33912	58	26	apprenticeship	apprenticeship	NN
33912	58	27	.	.	.
33912	59	1	He	-PRON-	PRP
33912	59	2	finished	finish	VBD
33912	59	3	,	,	,
33912	59	4	became	become	VBD
33912	59	5	a	a	DT
33912	59	6	journeyman	journeyman	NN
33912	59	7	,	,	,
33912	59	8	helped	help	VBD
33912	59	9	build	build	VB
33912	59	10	a	a	DT
33912	59	11	planter	planter	NN
33912	59	12	's	's	POS
33912	59	13	mansion	mansion	NN
33912	59	14	in	in	IN
33912	59	15	Natchez	Natchez	NNP
33912	59	16	,	,	,
33912	59	17	and	and	CC
33912	59	18	returned	return	VBD
33912	59	19	to	to	IN
33912	59	20	Baltimore	Baltimore	NNP
33912	59	21	in	in	IN
33912	59	22	1837	1837	CD
33912	59	23	to	to	TO
33912	59	24	commence	commence	VB
33912	59	25	his	-PRON-	PRP$
33912	59	26	own	own	JJ
33912	59	27	carpentry	carpentry	NN
33912	59	28	business	business	NN
33912	59	29	.	.	.
33912	60	1	The	the	DT
33912	60	2	next	next	JJ
33912	60	3	year	year	NN
33912	60	4	,	,	,
33912	60	5	while	while	IN
33912	60	6	building	build	VBG
33912	60	7	a	a	DT
33912	60	8	house	house	NN
33912	60	9	in	in	IN
33912	60	10	Harpers	Harpers	NNP
33912	60	11	Ferry	Ferry	NNP
33912	60	12	,	,	,
33912	60	13	he	-PRON-	PRP
33912	60	14	was	be	VBD
33912	60	15	asked	ask	VBN
33912	60	16	to	to	TO
33912	60	17	rejoin	rejoin	VB
33912	60	18	the	the	DT
33912	60	19	B.	B.	NNP
33912	61	1	&	&	CC
33912	61	2	O.	O.	NNP
33912	61	3	to	to	TO
33912	61	4	rebuild	rebuild	VB
33912	61	5	parts	part	NNS
33912	61	6	of	of	IN
33912	61	7	its	-PRON-	PRP$
33912	61	8	large	large	JJ
33912	61	9	timber	timber	NN
33912	61	10	bridge	bridge	NN
33912	61	11	over	over	IN
33912	61	12	the	the	DT
33912	61	13	Potomac	Potomac	NNP
33912	61	14	there	there	RB
33912	61	15	,	,	,
33912	61	16	which	which	WDT
33912	61	17	had	have	VBD
33912	61	18	fallen	fall	VBN
33912	61	19	victim	victim	NN
33912	61	20	to	to	IN
33912	61	21	various	various	JJ
33912	61	22	defects	defect	NNS
33912	61	23	after	after	IN
33912	61	24	about	about	RB
33912	61	25	a	a	DT
33912	61	26	year	year	NN
33912	61	27	's	's	POS
33912	61	28	use	use	NN
33912	61	29	.	.	.
33912	62	1	[	[	-LRB-
33912	62	2	Illustration	illustration	NN
33912	62	3	:	:	:
33912	62	4	Figure	figure	NN
33912	62	5	4.--SIMPLE	4.--SIMPLE	NNP
33912	62	6	BEAM	BEAM	NNS
33912	62	7	of	of	IN
33912	62	8	50-foot	50-foot	CD
33912	62	9	span	span	NN
33912	62	10	with	with	IN
33912	62	11	three	three	CD
33912	62	12	independent	independent	JJ
33912	62	13	trussing	truss	VBG
33912	62	14	systems	system	NNS
33912	62	15	.	.	.
33912	63	1	Bollman	Bollman	NNP
33912	63	2	's	's	POS
33912	63	3	use	use	NN
33912	63	4	of	of	IN
33912	63	5	this	this	DT
33912	63	6	method	method	NN
33912	63	7	of	of	IN
33912	63	8	support	support	NN
33912	63	9	led	lead	VBD
33912	63	10	to	to	IN
33912	63	11	the	the	DT
33912	63	12	development	development	NN
33912	63	13	of	of	IN
33912	63	14	his	-PRON-	PRP$
33912	63	15	bridge	bridge	NN
33912	63	16	truss	truss	NN
33912	63	17	.	.	.
33912	64	1	This	this	DT
33912	64	2	drawing	drawing	NN
33912	64	3	is	be	VBZ
33912	64	4	of	of	IN
33912	64	5	a	a	DT
33912	64	6	temporary	temporary	JJ
33912	64	7	span	span	NN
33912	64	8	used	use	VBN
33912	64	9	after	after	IN
33912	64	10	the	the	DT
33912	64	11	timber	timber	NN
33912	64	12	bridge	bridge	NN
33912	64	13	at	at	IN
33912	64	14	Harpers	Harpers	NNP
33912	64	15	Ferry	Ferry	NNP
33912	64	16	was	be	VBD
33912	64	17	destroyed	destroy	VBN
33912	64	18	during	during	IN
33912	64	19	the	the	DT
33912	64	20	Civil	Civil	NNP
33912	64	21	War	War	NNP
33912	64	22	.	.	.
33912	65	1	(	(	-LRB-
33912	65	2	In	in	IN
33912	65	3	Baltimore	Baltimore	NNP
33912	65	4	and	and	CC
33912	65	5	Ohio	Ohio	NNP
33912	65	6	Collection	Collection	NNP
33912	65	7	,	,	,
33912	65	8	Museum	Museum	NNP
33912	65	9	of	of	IN
33912	65	10	History	History	NNP
33912	65	11	and	and	CC
33912	65	12	Technology	Technology	NNP
33912	65	13	.	.	.
33912	65	14	)	)	-RRB-
33912	65	15	]	]	-RRB-
33912	66	1	Shortly	shortly	RB
33912	66	2	after	after	IN
33912	66	3	the	the	DT
33912	66	4	Harpers	Harpers	NNP
33912	66	5	Ferry	Ferry	NNP
33912	66	6	bridge	bridge	NN
33912	66	7	reconstruction	reconstruction	NN
33912	66	8	,	,	,
33912	66	9	Bollman	Bollman	NNP
33912	66	10	was	be	VBD
33912	66	11	made	make	VBN
33912	66	12	foreman	foreman	NN
33912	66	13	of	of	IN
33912	66	14	bridges	bridge	NNS
33912	66	15	.	.	.
33912	67	1	It	-PRON-	PRP
33912	67	2	is	be	VBZ
33912	67	3	apparent	apparent	JJ
33912	67	4	that	that	IN
33912	67	5	,	,	,
33912	67	6	on	on	IN
33912	67	7	the	the	DT
33912	67	8	basis	basis	NN
33912	67	9	of	of	IN
33912	67	10	his	-PRON-	PRP$
33912	67	11	practical	practical	JJ
33912	67	12	ability	ability	NN
33912	67	13	,	,	,
33912	67	14	enhanced	enhance	VBN
33912	67	15	by	by	IN
33912	67	16	the	the	DT
33912	67	17	theoretical	theoretical	JJ
33912	67	18	knowledge	knowledge	NN
33912	67	19	gained	gain	VBN
33912	67	20	by	by	IN
33912	67	21	intense	intense	JJ
33912	67	22	self	self	NN
33912	67	23	-	-	HYPH
33912	67	24	study	study	NN
33912	67	25	,	,	,
33912	67	26	he	-PRON-	PRP
33912	67	27	eventually	eventually	RB
33912	67	28	came	come	VBD
33912	67	29	to	to	TO
33912	67	30	assist	assist	VB
33912	67	31	Chief	Chief	NNP
33912	67	32	Engineer	Engineer	NNP
33912	67	33	Benjamin	Benjamin	NNP
33912	67	34	H.	H.	NNP
33912	67	35	Latrobe	Latrobe	NNP
33912	67	36	in	in	IN
33912	67	37	bridge	bridge	NN
33912	67	38	design	design	NN
33912	67	39	.	.	.
33912	68	1	He	-PRON-	PRP
33912	68	2	later	later	RB
33912	68	3	took	take	VBD
33912	68	4	this	this	DT
33912	68	5	work	work	NN
33912	68	6	over	over	RP
33912	68	7	entirely	entirely	RB
33912	68	8	as	as	IN
33912	68	9	Latrobe	Latrobe	NNP
33912	68	10	's	's	POS
33912	68	11	attentions	attention	NNS
33912	68	12	and	and	CC
33912	68	13	talents	talent	NNS
33912	68	14	were	be	VBD
33912	68	15	demanded	demand	VBN
33912	68	16	in	in	IN
33912	68	17	the	the	DT
33912	68	18	location	location	NN
33912	68	19	and	and	CC
33912	68	20	extension	extension	NN
33912	68	21	of	of	IN
33912	68	22	the	the	DT
33912	68	23	line	line	NN
33912	68	24	between	between	IN
33912	68	25	Cumberland	Cumberland	NNP
33912	68	26	and	and	CC
33912	68	27	Wheeling	Wheeling	NNP
33912	68	28	.	.	.
33912	69	1	[	[	-LRB-
33912	69	2	Illustration	illustration	NN
33912	69	3	:	:	:
33912	69	4	Figure	Figure	NNP
33912	69	5	5.--BOLLMAN	5.--BOLLMAN	NNP
33912	69	6	'S	'S	NNP
33912	69	7	ORIGINAL	original	JJ
33912	69	8	PATENT	patent	NN
33912	69	9	DRAWING	drawing	NN
33912	69	10	,	,	,
33912	69	11	1851	1851	CD
33912	69	12	.	.	.
33912	70	1	(	(	-LRB-
33912	70	2	In	in	IN
33912	70	3	National	National	NNP
33912	70	4	Archives	Archives	NNPS
33912	70	5	,	,	,
33912	70	6	Washington	Washington	NNP
33912	70	7	,	,	,
33912	70	8	D.C.	D.C.	NNP
33912	70	9	)	)	-RRB-
33912	70	10	]	]	-RRB-
33912	70	11	The	the	DT
33912	70	12	B.	B.	NNP
33912	71	1	&	&	CC
33912	71	2	O.	O.	NNP
33912	71	3	did	do	VBD
33912	71	4	not	not	RB
33912	71	5	reach	reach	VB
33912	71	6	its	-PRON-	PRP$
33912	71	7	logical	logical	JJ
33912	71	8	destination	destination	NN
33912	71	9	,	,	,
33912	71	10	Ohio	Ohio	NNP
33912	71	11	(	(	-LRB-
33912	71	12	actually	actually	RB
33912	71	13	Wheeling	Wheeling	NNP
33912	71	14	,	,	,
33912	71	15	West	West	NNP
33912	71	16	Virginia	Virginia	NNP
33912	71	17	,	,	,
33912	71	18	on	on	IN
33912	71	19	the	the	DT
33912	71	20	east	east	NNP
33912	71	21	bank	bank	NNP
33912	71	22	of	of	IN
33912	71	23	the	the	DT
33912	71	24	Ohio	Ohio	NNP
33912	71	25	River	River	NNP
33912	71	26	)	)	-RRB-
33912	71	27	until	until	IN
33912	71	28	1853	1853	CD
33912	71	29	.	.	.
33912	72	1	In	in	IN
33912	72	2	the	the	DT
33912	72	3	years	year	NNS
33912	72	4	following	follow	VBG
33912	72	5	Bollman	Bollman	NNP
33912	72	6	's	's	POS
33912	72	7	return	return	NN
33912	72	8	to	to	IN
33912	72	9	the	the	DT
33912	72	10	railroad	railroad	NN
33912	72	11	,	,	,
33912	72	12	the	the	DT
33912	72	13	design	design	NN
33912	72	14	of	of	IN
33912	72	15	bridges	bridge	NNS
33912	72	16	was	be	VBD
33912	72	17	an	an	DT
33912	72	18	occupation	occupation	NN
33912	72	19	of	of	IN
33912	72	20	the	the	DT
33912	72	21	engineering	engineering	NN
33912	72	22	staff	staff	NN
33912	72	23	second	second	JJ
33912	72	24	in	in	IN
33912	72	25	importance	importance	NN
33912	72	26	only	only	RB
33912	72	27	to	to	IN
33912	72	28	the	the	DT
33912	72	29	location	location	NN
33912	72	30	of	of	IN
33912	72	31	the	the	DT
33912	72	32	line	line	NN
33912	72	33	itself	-PRON-	PRP
33912	72	34	.	.	.
33912	73	1	During	during	IN
33912	73	2	this	this	DT
33912	73	3	time	time	NN
33912	73	4	Bollman	Bollman	NNP
33912	73	5	continued	continue	VBD
33912	73	6	to	to	TO
33912	73	7	rise	rise	VB
33912	73	8	and	and	CC
33912	73	9	assume	assume	VB
33912	73	10	greater	great	JJR
33912	73	11	responsibilities	responsibility	NNS
33912	73	12	,	,	,
33912	73	13	being	be	VBG
33912	73	14	appointed	appoint	VBN
33912	73	15	master	master	NN
33912	73	16	of	of	IN
33912	73	17	road	road	NN
33912	73	18	by	by	IN
33912	73	19	Latrobe	Latrobe	NNP
33912	73	20	in	in	IN
33912	73	21	1848	1848	CD
33912	73	22	.	.	.
33912	74	1	In	in	IN
33912	74	2	this	this	DT
33912	74	3	position	position	NN
33912	74	4	he	-PRON-	PRP
33912	74	5	was	be	VBD
33912	74	6	responsible	responsible	JJ
33912	74	7	for	for	IN
33912	74	8	all	all	DT
33912	74	9	railroad	railroad	NN
33912	74	10	property	property	NN
33912	74	11	that	that	WDT
33912	74	12	did	do	VBD
33912	74	13	not	not	RB
33912	74	14	move	move	VB
33912	74	15	,	,	,
33912	74	16	principally	principally	RB
33912	74	17	the	the	DT
33912	74	18	right	right	JJ
33912	74	19	-	-	HYPH
33912	74	20	of	of	IN
33912	74	21	-	-	HYPH
33912	74	22	way	way	NN
33912	74	23	and	and	CC
33912	74	24	its	-PRON-	PRP$
33912	74	25	structures	structure	NNS
33912	74	26	,	,	,
33912	74	27	including	include	VBG
33912	74	28	,	,	,
33912	74	29	of	of	IN
33912	74	30	course	course	NN
33912	74	31	,	,	,
33912	74	32	bridges	bridge	NNS
33912	74	33	.	.	.
33912	75	1	The	the	DT
33912	75	2	recognition	recognition	NN
33912	75	3	of	of	IN
33912	75	4	Bollman	Bollman	NNP
33912	75	5	's	's	POS
33912	75	6	abilities	ability	NNS
33912	75	7	was	be	VBD
33912	75	8	in	in	IN
33912	75	9	the	the	DT
33912	75	10	well	well	RB
33912	75	11	-	-	HYPH
33912	75	12	established	establish	VBN
33912	75	13	tradition	tradition	NN
33912	75	14	of	of	IN
33912	75	15	the	the	DT
33912	75	16	B.	B.	NNP
33912	76	1	&	&	CC
33912	76	2	O.	O.	NNP
33912	76	3	,	,	,
33912	76	4	long	long	RB
33912	76	5	known	know	VBN
33912	76	6	as	as	IN
33912	76	7	America	America	NNP
33912	76	8	's	's	POS
33912	76	9	first	first	JJ
33912	76	10	"	"	``
33912	76	11	school	school	NN
33912	76	12	of	of	IN
33912	76	13	engineering	engineering	NN
33912	76	14	,	,	,
33912	76	15	"	"	''
33912	76	16	having	have	VBG
33912	76	17	sponsored	sponsor	VBN
33912	76	18	many	many	JJ
33912	76	19	early	early	JJ
33912	76	20	experiments	experiment	NNS
33912	76	21	in	in	IN
33912	76	22	motive	motive	JJ
33912	76	23	power	power	NN
33912	76	24	,	,	,
33912	76	25	trackwork	trackwork	NN
33912	76	26	,	,	,
33912	76	27	and	and	CC
33912	76	28	other	other	JJ
33912	76	29	fundamental	fundamental	JJ
33912	76	30	elements	element	NNS
33912	76	31	of	of	IN
33912	76	32	railroad	railroad	NN
33912	76	33	engineering	engineering	NN
33912	76	34	.	.	.
33912	77	1	It	-PRON-	PRP
33912	77	2	furnished	furnish	VBD
33912	77	3	the	the	DT
33912	77	4	means	mean	NNS
33912	77	5	of	of	IN
33912	77	6	expression	expression	NN
33912	77	7	for	for	IN
33912	77	8	such	such	JJ
33912	77	9	men	man	NNS
33912	77	10	as	as	IN
33912	77	11	Knight	Knight	NNP
33912	77	12	,	,	,
33912	77	13	Wright	Wright	NNP
33912	77	14	,	,	,
33912	77	15	Whistler	Whistler	NNP
33912	77	16	,	,	,
33912	77	17	Latrobe	Latrobe	NNP
33912	77	18	,	,	,
33912	77	19	and	and	CC
33912	77	20	Winans	Winans	NNPS
33912	77	21	.	.	.
33912	78	1	[	[	-LRB-
33912	78	2	Illustration	illustration	NN
33912	78	3	:	:	:
33912	78	4	Figure	figure	NN
33912	78	5	6.--PLAN	6.--plan	CD
33912	78	6	OF	of	IN
33912	78	7	HARPERS	HARPERS	NNP
33912	78	8	FERRY	FERRY	NNP
33912	78	9	BRIDGE	BRIDGE	NNP
33912	78	10	as	as	IN
33912	78	11	built	build	VBN
33912	78	12	by	by	IN
33912	78	13	Latrobe	Latrobe	NNP
33912	78	14	.	.	.
33912	79	1	The	the	DT
33912	79	2	second	second	JJ
33912	79	3	Winchester	Winchester	NNP
33912	79	4	track	track	NN
33912	79	5	was	be	VBD
33912	79	6	later	later	RB
33912	79	7	removed	remove	VBN
33912	79	8	.	.	.
33912	79	9	]	]	-RRB-
33912	80	1	Of	of	IN
33912	80	2	these	these	DT
33912	80	3	pioneer	pioneer	NN
33912	80	4	civil	civil	JJ
33912	80	5	and	and	CC
33912	80	6	mechanical	mechanical	JJ
33912	80	7	engineers	engineer	NNS
33912	80	8	,	,	,
33912	80	9	some	some	DT
33912	80	10	were	be	VBD
33912	80	11	formally	formally	RB
33912	80	12	trained	train	VBN
33912	80	13	but	but	CC
33912	80	14	most	most	JJS
33912	80	15	were	be	VBD
33912	80	16	self	self	NN
33912	80	17	-	-	HYPH
33912	80	18	taught	teach	VBN
33912	80	19	.	.	.
33912	81	1	Bollman	Bollman	NNP
33912	81	2	's	's	POS
33912	81	3	career	career	NN
33912	81	4	on	on	IN
33912	81	5	the	the	DT
33912	81	6	B.	B.	NNP
33912	82	1	&	&	CC
33912	82	2	O.	O.	NNP
33912	82	3	is	be	VBZ
33912	82	4	of	of	IN
33912	82	5	particular	particular	JJ
33912	82	6	interest	interest	NN
33912	82	7	not	not	RB
33912	82	8	only	only	RB
33912	82	9	because	because	IN
33912	82	10	he	-PRON-	PRP
33912	82	11	was	be	VBD
33912	82	12	perhaps	perhaps	RB
33912	82	13	the	the	DT
33912	82	14	most	most	RBS
33912	82	15	successful	successful	JJ
33912	82	16	of	of	IN
33912	82	17	the	the	DT
33912	82	18	latter	latter	JJ
33912	82	19	class	class	NN
33912	82	20	but	but	CC
33912	82	21	because	because	IN
33912	82	22	he	-PRON-	PRP
33912	82	23	was	be	VBD
33912	82	24	probably	probably	RB
33912	82	25	also	also	RB
33912	82	26	the	the	DT
33912	82	27	last	last	JJ
33912	82	28	.	.	.
33912	83	1	He	-PRON-	PRP
33912	83	2	may	may	MD
33912	83	3	be	be	VB
33912	83	4	said	say	VBN
33912	83	5	to	to	TO
33912	83	6	be	be	VB
33912	83	7	a	a	DT
33912	83	8	true	true	JJ
33912	83	9	representative	representative	NN
33912	83	10	of	of	IN
33912	83	11	the	the	DT
33912	83	12	transitional	transitional	JJ
33912	83	13	period	period	NN
33912	83	14	between	between	IN
33912	83	15	intuitive	intuitive	JJ
33912	83	16	and	and	CC
33912	83	17	exact	exact	JJ
33912	83	18	engineering	engineering	NN
33912	83	19	.	.	.
33912	84	1	Actually	actually	RB
33912	84	2	,	,	,
33912	84	3	his	-PRON-	PRP$
33912	84	4	designing	designing	NN
33912	84	5	was	be	VBD
33912	84	6	a	a	DT
33912	84	7	composite	composite	NN
33912	84	8	of	of	IN
33912	84	9	the	the	DT
33912	84	10	two	two	CD
33912	84	11	methods	method	NNS
33912	84	12	.	.	.
33912	85	1	While	while	IN
33912	85	2	making	make	VBG
33912	85	3	consistent	consistent	JJ
33912	85	4	use	use	NN
33912	85	5	of	of	IN
33912	85	6	mathematical	mathematical	JJ
33912	85	7	analysis	analysis	NN
33912	85	8	,	,	,
33912	85	9	he	-PRON-	PRP
33912	85	10	was	be	VBD
33912	85	11	at	at	IN
33912	85	12	the	the	DT
33912	85	13	same	same	JJ
33912	85	14	time	time	NN
33912	85	15	more	more	RBR
33912	85	16	or	or	CC
33912	85	17	less	less	RBR
33912	85	18	dependent	dependent	JJ
33912	85	19	upon	upon	IN
33912	85	20	empirical	empirical	JJ
33912	85	21	methods	method	NNS
33912	85	22	.	.	.
33912	86	1	For	for	IN
33912	86	2	years	year	NNS
33912	86	3	,	,	,
33912	86	4	B.	B.	NNP
33912	87	1	&	&	CC
33912	87	2	O.	O.	NNP
33912	87	3	employees	employee	NNS
33912	87	4	told	tell	VBD
33912	87	5	stories	story	NNS
33912	87	6	of	of	IN
33912	87	7	his	-PRON-	PRP$
33912	87	8	sessions	session	NNS
33912	87	9	in	in	IN
33912	87	10	the	the	DT
33912	87	11	tin	tin	JJ
33912	87	12	shop	shop	NN
33912	87	13	of	of	IN
33912	87	14	the	the	DT
33912	87	15	railroad	railroad	NN
33912	87	16	's	's	POS
33912	87	17	main	main	JJ
33912	87	18	repair	repair	NN
33912	87	19	facility	facility	NN
33912	87	20	at	at	IN
33912	87	21	Mount	Mount	NNP
33912	87	22	Clair	Clair	NNP
33912	87	23	in	in	IN
33912	87	24	Baltimore	Baltimore	NNP
33912	87	25	,	,	,
33912	87	26	where	where	WRB
33912	87	27	he	-PRON-	PRP
33912	87	28	built	build	VBD
33912	87	29	models	model	NNS
33912	87	30	of	of	IN
33912	87	31	bridges	bridge	NNS
33912	87	32	from	from	IN
33912	87	33	scraps	scrap	NNS
33912	87	34	of	of	IN
33912	87	35	metal	metal	NN
33912	87	36	and	and	CC
33912	87	37	then	then	RB
33912	87	38	tested	test	VBD
33912	87	39	them	-PRON-	PRP
33912	87	40	to	to	IN
33912	87	41	destruction	destruction	NN
33912	87	42	to	to	TO
33912	87	43	locate	locate	VB
33912	87	44	weaknesses	weakness	NNS
33912	87	45	.	.	.
33912	88	1	It	-PRON-	PRP
33912	88	2	seems	seem	VBZ
33912	88	3	most	most	RBS
33912	88	4	likely	likely	JJ
33912	88	5	,	,	,
33912	88	6	however	however	RB
33912	88	7	,	,	,
33912	88	8	that	that	IN
33912	88	9	the	the	DT
33912	88	10	empirical	empirical	JJ
33912	88	11	studies	study	NNS
33912	88	12	were	be	VBD
33912	88	13	used	use	VBN
33912	88	14	solely	solely	RB
33912	88	15	as	as	IN
33912	88	16	checks	check	NNS
33912	88	17	against	against	IN
33912	88	18	the	the	DT
33912	88	19	mathematical	mathematical	JJ
33912	88	20	.	.	.
33912	89	1	[	[	-LRB-
33912	89	2	Illustration	illustration	NN
33912	89	3	:	:	:
33912	89	4	Figure	Figure	NNP
33912	89	5	7.--RECENT	7.--RECENT	NNP
33912	89	6	MODEL	model	NN
33912	89	7	of	of	IN
33912	89	8	Bollman	Bollman	NNP
33912	89	9	's	's	POS
33912	89	10	Winchester	Winchester	NNP
33912	89	11	span	span	NN
33912	89	12	.	.	.
33912	90	1	Only	only	RB
33912	90	2	two	two	CD
33912	90	3	of	of	IN
33912	90	4	the	the	DT
33912	90	5	three	three	CD
33912	90	6	lines	line	NNS
33912	90	7	of	of	IN
33912	90	8	trussing	truss	VBG
33912	90	9	are	be	VBP
33912	90	10	shown	show	VBN
33912	90	11	.	.	.
33912	91	1	The	the	DT
33912	91	2	model	model	NN
33912	91	3	is	be	VBZ
33912	91	4	based	base	VBN
33912	91	5	on	on	IN
33912	91	6	Bollman	Bollman	NNP
33912	91	7	's	's	POS
33912	91	8	published	publish	VBN
33912	91	9	description	description	NN
33912	91	10	and	and	CC
33912	91	11	drawings	drawing	NNS
33912	91	12	of	of	IN
33912	91	13	the	the	DT
33912	91	14	structure	structure	NN
33912	91	15	.	.	.
33912	92	1	(	(	-LRB-
33912	92	2	USNM	USNM	NNP
33912	92	3	318171	318171	CD
33912	92	4	;	;	:
33912	92	5	Smithsonian	smithsonian	JJ
33912	92	6	photo	photo	NN
33912	92	7	46941	46941	CD
33912	92	8	.	.	.
33912	92	9	)	)	-RRB-
33912	92	10	]	]	-RRB-
33912	93	1	In	in	IN
33912	93	2	the	the	DT
33912	93	3	period	period	NN
33912	93	4	when	when	WRB
33912	93	5	Bollman	Bollman	NNP
33912	93	6	began	begin	VBD
33912	93	7	designing	design	VBG
33912	93	8	--	--	:
33912	93	9	about	about	RB
33912	93	10	1840	1840	CD
33912	93	11	-	-	HYPH
33912	93	12	-there	-there	NNP
33912	93	13	were	be	VBD
33912	93	14	fewer	few	JJR
33912	93	15	than	than	IN
33912	93	16	ten	ten	CD
33912	93	17	men	man	NNS
33912	93	18	in	in	IN
33912	93	19	the	the	DT
33912	93	20	country	country	NN
33912	93	21	designing	design	VBG
33912	93	22	bridges	bridge	NNS
33912	93	23	by	by	IN
33912	93	24	scientifically	scientifically	RB
33912	93	25	correct	correct	JJ
33912	93	26	analytical	analytical	JJ
33912	93	27	methods	method	NNS
33912	93	28	,	,	,
33912	93	29	Whipple	Whipple	NNP
33912	93	30	and	and	CC
33912	93	31	Roebling	Roebling	NNP
33912	93	32	the	the	DT
33912	93	33	most	most	RBS
33912	93	34	notable	notable	JJ
33912	93	35	of	of	IN
33912	93	36	this	this	DT
33912	93	37	group	group	NN
33912	93	38	.	.	.
33912	94	1	By	by	IN
33912	94	2	1884	1884	CD
33912	94	3	,	,	,
33912	94	4	the	the	DT
33912	94	5	year	year	NN
33912	94	6	of	of	IN
33912	94	7	Bollman	Bollman	NNP
33912	94	8	's	's	POS
33912	94	9	death	death	NN
33912	94	10	,	,	,
33912	94	11	the	the	DT
33912	94	12	age	age	NN
33912	94	13	of	of	IN
33912	94	14	intuitive	intuitive	JJ
33912	94	15	design	design	NN
33912	94	16	had	have	VBD
33912	94	17	been	be	VBN
33912	94	18	dead	dead	JJ
33912	94	19	for	for	IN
33912	94	20	a	a	DT
33912	94	21	decade	decade	NN
33912	94	22	or	or	CC
33912	94	23	longer	long	RBR
33912	94	24	.	.	.
33912	95	1	[	[	-LRB-
33912	95	2	Illustration	illustration	NN
33912	95	3	:	:	:
33912	95	4	Figure	figure	NN
33912	95	5	8.--THE	8.--the	CD
33912	95	6	BALTIMORE	BALTIMORE	NNP
33912	95	7	AND	and	CC
33912	95	8	OHIO	OHIO	NNP
33912	95	9	RAILROAD	RAILROAD	NNP
33912	95	10	'S	's	POS
33912	95	11	Potomac	Potomac	NNP
33912	95	12	River	River	NNP
33912	95	13	crossing	crossing	NN
33912	95	14	at	at	IN
33912	95	15	Harpers	Harpers	NNP
33912	95	16	Ferry	Ferry	NNP
33912	95	17	,	,	,
33912	95	18	about	about	RB
33912	95	19	1860	1860	CD
33912	95	20	.	.	.
33912	96	1	Bollman	Bollman	NNP
33912	96	2	's	's	POS
33912	96	3	iron	iron	NN
33912	96	4	"	"	``
33912	96	5	Winchester	Winchester	NNP
33912	96	6	span	span	NN
33912	96	7	"	"	''
33912	96	8	of	of	IN
33912	96	9	1851	1851	CD
33912	96	10	is	be	VBZ
33912	96	11	seen	see	VBN
33912	96	12	at	at	IN
33912	96	13	the	the	DT
33912	96	14	right	right	JJ
33912	96	15	end	end	NN
33912	96	16	of	of	IN
33912	96	17	Latrobe	Latrobe	NNP
33912	96	18	's	's	POS
33912	96	19	timber	timber	NN
33912	96	20	structure	structure	NN
33912	96	21	of	of	IN
33912	96	22	1836	1836	CD
33912	96	23	,	,	,
33912	96	24	which	which	WDT
33912	96	25	forms	form	VBZ
33912	96	26	the	the	DT
33912	96	27	body	body	NN
33912	96	28	of	of	IN
33912	96	29	the	the	DT
33912	96	30	bridge	bridge	NN
33912	96	31	.	.	.
33912	97	1	(	(	-LRB-
33912	97	2	_	_	NNP
33912	97	3	Photo	Photo	NNP
33912	97	4	courtesy	courtesy	NN
33912	97	5	of	of	IN
33912	97	6	Harpers	Harpers	NNP
33912	97	7	Ferry	Ferry	NNP
33912	97	8	National	National	NNP
33912	97	9	Historical	Historical	NNP
33912	97	10	Park	Park	NNP
33912	97	11	.	.	.
33912	97	12	_	_	NNP
33912	97	13	)	)	-RRB-
33912	97	14	]	]	-RRB-
33912	97	15	The	the	DT
33912	97	16	B.	B.	NNP
33912	98	1	&	&	CC
33912	98	2	O.	O.	NNP
33912	98	3	was	be	VBD
33912	98	4	in	in	IN
33912	98	5	every	every	DT
33912	98	6	way	way	NN
33912	98	7	a	a	DT
33912	98	8	truly	truly	RB
33912	98	9	pioneer	pioneer	NN
33912	98	10	enterprise	enterprise	NN
33912	98	11	.	.	.
33912	99	1	It	-PRON-	PRP
33912	99	2	was	be	VBD
33912	99	3	the	the	DT
33912	99	4	first	first	JJ
33912	99	5	practical	practical	JJ
33912	99	6	railroad	railroad	NN
33912	99	7	in	in	IN
33912	99	8	America	America	NNP
33912	99	9	;	;	:
33912	99	10	the	the	DT
33912	99	11	first	first	JJ
33912	99	12	to	to	TO
33912	99	13	use	use	VB
33912	99	14	an	an	DT
33912	99	15	American	american	JJ
33912	99	16	locomotive	locomotive	NN
33912	99	17	;	;	:
33912	99	18	the	the	DT
33912	99	19	first	first	JJ
33912	99	20	to	to	TO
33912	99	21	cross	cross	VB
33912	99	22	the	the	DT
33912	99	23	Alleghenies	allegheny	NNS
33912	99	24	.	.	.
33912	100	1	The	the	DT
33912	100	2	spirit	spirit	NN
33912	100	3	of	of	IN
33912	100	4	innovation	innovation	NN
33912	100	5	had	have	VBD
33912	100	6	been	be	VBN
33912	100	7	encouraged	encourage	VBN
33912	100	8	by	by	IN
33912	100	9	the	the	DT
33912	100	10	railroad	railroad	NN
33912	100	11	's	's	POS
33912	100	12	directors	director	NNS
33912	100	13	from	from	IN
33912	100	14	the	the	DT
33912	100	15	outset	outset	NN
33912	100	16	.	.	.
33912	101	1	It	-PRON-	PRP
33912	101	2	could	could	MD
33912	101	3	hardly	hardly	RB
33912	101	4	have	have	VB
33912	101	5	been	be	VBN
33912	101	6	otherwise	otherwise	RB
33912	101	7	in	in	IN
33912	101	8	light	light	NN
33912	101	9	of	of	IN
33912	101	10	the	the	DT
33912	101	11	project	project	NN
33912	101	12	's	's	POS
33912	101	13	elemental	elemental	JJ
33912	101	14	daring	daring	NN
33912	101	15	.	.	.
33912	102	1	The	the	DT
33912	102	2	first	first	JJ
33912	102	3	few	few	JJ
33912	102	4	major	major	JJ
33912	102	5	bridges	bridge	NNS
33912	102	6	beyond	beyond	IN
33912	102	7	the	the	DT
33912	102	8	line	line	NN
33912	102	9	's	's	POS
33912	102	10	starting	starting	NN
33912	102	11	point	point	NN
33912	102	12	on	on	IN
33912	102	13	Pratt	Pratt	NNP
33912	102	14	Street	Street	NNP
33912	102	15	,	,	,
33912	102	16	in	in	IN
33912	102	17	Baltimore	Baltimore	NNP
33912	102	18	,	,	,
33912	102	19	were	be	VBD
33912	102	20	of	of	IN
33912	102	21	rather	rather	RB
33912	102	22	elaborate	elaborate	JJ
33912	102	23	masonry	masonry	NN
33912	102	24	,	,	,
33912	102	25	but	but	CC
33912	102	26	this	this	DT
33912	102	27	may	may	MD
33912	102	28	be	be	VB
33912	102	29	explained	explain	VBN
33912	102	30	by	by	IN
33912	102	31	the	the	DT
33912	102	32	projectors	projector	NNS
33912	102	33	'	'	POS
33912	102	34	consciousness	consciousness	NN
33912	102	35	of	of	IN
33912	102	36	the	the	DT
33912	102	37	railroad	railroad	NN
33912	102	38	's	's	POS
33912	102	39	significance	significance	NN
33912	102	40	and	and	CC
33912	102	41	their	-PRON-	PRP$
33912	102	42	desire	desire	NN
33912	102	43	for	for	IN
33912	102	44	permanence	permanence	NN
33912	102	45	.	.	.
33912	103	1	However	however	RB
33912	103	2	,	,	,
33912	103	3	the	the	DT
33912	103	4	aforementioned	aforementioned	JJ
33912	103	5	economic	economic	JJ
33912	103	6	factors	factor	NNS
33912	103	7	shortly	shortly	RB
33912	103	8	made	make	VBD
33912	103	9	obvious	obvious	JJ
33912	103	10	the	the	DT
33912	103	11	necessity	necessity	NN
33912	103	12	of	of	IN
33912	103	13	departure	departure	NN
33912	103	14	from	from	IN
33912	103	15	this	this	DT
33912	103	16	system	system	NN
33912	103	17	,	,	,
33912	103	18	and	and	CC
33912	103	19	wood	wood	NN
33912	103	20	was	be	VBD
33912	103	21	thereafter	thereafter	RB
33912	103	22	employed	employ	VBN
33912	103	23	for	for	IN
33912	103	24	most	most	JJS
33912	103	25	long	long	JJ
33912	103	26	spans	span	NNS
33912	103	27	on	on	IN
33912	103	28	the	the	DT
33912	103	29	line	line	NN
33912	103	30	as	as	RB
33912	103	31	far	far	RB
33912	103	32	as	as	IN
33912	103	33	Harpers	Harpers	NNP
33912	103	34	Ferry	Ferry	NNP
33912	103	35	and	and	CC
33912	103	36	beyond	beyond	RB
33912	103	37	.	.	.
33912	104	1	Only	only	RB
33912	104	2	the	the	DT
33912	104	3	most	most	RBS
33912	104	4	minor	minor	JJ
33912	104	5	culverts	culvert	NNS
33912	104	6	and	and	CC
33912	104	7	short	short	JJ
33912	104	8	spans	span	NNS
33912	104	9	,	,	,
33912	104	10	and	and	CC
33912	104	11	those	those	DT
33912	104	12	only	only	RB
33912	104	13	in	in	IN
33912	104	14	locations	location	NNS
33912	104	15	near	near	IN
33912	104	16	suitable	suitable	JJ
33912	104	17	quarries	quarry	NNS
33912	104	18	,	,	,
33912	104	19	were	be	VBD
33912	104	20	built	build	VBN
33912	104	21	of	of	IN
33912	104	22	stone	stone	NN
33912	104	23	.	.	.
33912	105	1	In	in	IN
33912	105	2	addition	addition	NN
33912	105	3	to	to	IN
33912	105	4	the	the	DT
33912	105	5	economic	economic	JJ
33912	105	6	considerations	consideration	NNS
33912	105	7	which	which	WDT
33912	105	8	prompted	prompt	VBD
33912	105	9	the	the	DT
33912	105	10	company	company	NN
33912	105	11	to	to	TO
33912	105	12	revert	revert	VB
33912	105	13	to	to	TO
33912	105	14	timber	timber	VB
33912	105	15	for	for	IN
33912	105	16	the	the	DT
33912	105	17	major	major	JJ
33912	105	18	bridges	bridge	NNS
33912	105	19	,	,	,
33912	105	20	there	there	EX
33912	105	21	were	be	VBD
33912	105	22	several	several	JJ
33912	105	23	situations	situation	NNS
33912	105	24	in	in	IN
33912	105	25	which	which	WDT
33912	105	26	masonry	masonry	NN
33912	105	27	construction	construction	NN
33912	105	28	was	be	VBD
33912	105	29	unsuitable	unsuitable	JJ
33912	105	30	for	for	IN
33912	105	31	practical	practical	JJ
33912	105	32	reasons	reason	NNS
33912	105	33	.	.	.
33912	106	1	If	if	IN
33912	106	2	stone	stone	NN
33912	106	3	arches	arch	NNS
33912	106	4	were	be	VBD
33912	106	5	used	use	VBN
33912	106	6	in	in	IN
33912	106	7	locations	location	NNS
33912	106	8	where	where	WRB
33912	106	9	the	the	DT
33912	106	10	grade	grade	NN
33912	106	11	of	of	IN
33912	106	12	the	the	DT
33912	106	13	line	line	NN
33912	106	14	was	be	VBD
33912	106	15	a	a	DT
33912	106	16	relatively	relatively	RB
33912	106	17	short	short	JJ
33912	106	18	distance	distance	NN
33912	106	19	above	above	IN
33912	106	20	the	the	DT
33912	106	21	surface	surface	NN
33912	106	22	of	of	IN
33912	106	23	the	the	DT
33912	106	24	stream	stream	NN
33912	106	25	to	to	TO
33912	106	26	be	be	VB
33912	106	27	crossed	cross	VBN
33912	106	28	,	,	,
33912	106	29	a	a	DT
33912	106	30	number	number	NN
33912	106	31	of	of	IN
33912	106	32	short	short	JJ
33912	106	33	arches	arch	NNS
33912	106	34	would	would	MD
33912	106	35	have	have	VB
33912	106	36	been	be	VBN
33912	106	37	necessary	necessary	JJ
33912	106	38	to	to	TO
33912	106	39	avoid	avoid	VB
33912	106	40	a	a	DT
33912	106	41	very	very	RB
33912	106	42	flat	flat	JJ
33912	106	43	single	single	JJ
33912	106	44	arch	arch	NN
33912	106	45	.	.	.
33912	107	1	In	in	IN
33912	107	2	arch	arch	JJ
33912	107	3	construction	construction	NN
33912	107	4	,	,	,
33912	107	5	the	the	DT
33912	107	6	smaller	small	JJR
33912	107	7	the	the	DT
33912	107	8	segment	segment	NN
33912	107	9	of	of	IN
33912	107	10	a	a	DT
33912	107	11	circle	circle	NN
33912	107	12	represented	represent	VBN
33912	107	13	by	by	IN
33912	107	14	the	the	DT
33912	107	15	arch	arch	NN
33912	107	16	(	(	-LRB-
33912	107	17	that	that	RB
33912	107	18	is	is	RB
33912	107	19	,	,	,
33912	107	20	the	the	DT
33912	107	21	flatter	flat	JJR
33912	107	22	the	the	DT
33912	107	23	arch	arch	NN
33912	107	24	)	)	-RRB-
33912	107	25	,	,	,
33912	107	26	the	the	DT
33912	107	27	greater	great	JJR
33912	107	28	the	the	DT
33912	107	29	stress	stress	NN
33912	107	30	in	in	IN
33912	107	31	the	the	DT
33912	107	32	arch	arch	JJ
33912	107	33	ring	ring	NN
33912	107	34	and	and	CC
33912	107	35	the	the	DT
33912	107	36	resulting	result	VBG
33912	107	37	horizontal	horizontal	JJ
33912	107	38	thrust	thrust	NN
33912	107	39	on	on	IN
33912	107	40	the	the	DT
33912	107	41	abutments	abutment	NNS
33912	107	42	.	.	.
33912	108	1	[	[	-LRB-
33912	108	2	Illustration	illustration	NN
33912	108	3	:	:	:
33912	108	4	Figure	Figure	NNP
33912	108	5	9.--BOLLMAN	9.--BOLLMAN	NNP
33912	108	6	SKEW	skew	JJ
33912	108	7	BRIDGE	bridge	NN
33912	108	8	at	at	IN
33912	108	9	Elysville	Elysville	NNP
33912	108	10	(	(	-LRB-
33912	108	11	now	now	RB
33912	108	12	Daniels	Daniels	NNP
33912	108	13	)	)	-RRB-
33912	108	14	,	,	,
33912	108	15	Maryland	Maryland	NNP
33912	108	16	,	,	,
33912	108	17	built	build	VBN
33912	108	18	in	in	IN
33912	108	19	1853	1853	CD
33912	108	20	-	-	SYM
33912	108	21	1854	1854	CD
33912	108	22	.	.	.
33912	109	1	(	(	-LRB-
33912	109	2	_	_	NNP
33912	109	3	Photo	Photo	NNP
33912	109	4	courtesy	courtesy	NN
33912	109	5	of	of	IN
33912	109	6	Maryland	Maryland	NNP
33912	109	7	Historical	Historical	NNP
33912	109	8	Society	Society	NNP
33912	109	9	.	.	.
33912	109	10	_	_	NNP
33912	109	11	)	)	-RRB-
33912	109	12	]	]	-RRB-
33912	109	13	The	the	DT
33912	109	14	piers	pier	NNS
33912	109	15	for	for	IN
33912	109	16	the	the	DT
33912	109	17	numerous	numerous	JJ
33912	109	18	arches	arch	NNS
33912	109	19	necessary	necessary	JJ
33912	109	20	to	to	TO
33912	109	21	permit	permit	VB
33912	109	22	an	an	DT
33912	109	23	optimum	optimum	JJ
33912	109	24	amount	amount	NN
33912	109	25	of	of	IN
33912	109	26	rise	rise	NN
33912	109	27	relative	relative	JJ
33912	109	28	to	to	IN
33912	109	29	the	the	DT
33912	109	30	span	span	NN
33912	109	31	would	would	MD
33912	109	32	have	have	VB
33912	109	33	presented	present	VBN
33912	109	34	a	a	DT
33912	109	35	dangerous	dangerous	JJ
33912	109	36	restriction	restriction	NN
33912	109	37	to	to	TO
33912	109	38	stream	stream	VB
33912	109	39	flow	flow	NN
33912	109	40	in	in	IN
33912	109	41	time	time	NN
33912	109	42	of	of	IN
33912	109	43	flood	flood	NN
33912	109	44	.	.	.
33912	110	1	By	by	IN
33912	110	2	the	the	DT
33912	110	3	use	use	NN
33912	110	4	of	of	IN
33912	110	5	timber	timber	NN
33912	110	6	trusses	truss	NNS
33912	110	7	such	such	JJ
33912	110	8	crossings	crossing	NNS
33912	110	9	could	could	MD
33912	110	10	be	be	VB
33912	110	11	made	make	VBN
33912	110	12	in	in	IN
33912	110	13	one	one	CD
33912	110	14	or	or	CC
33912	110	15	two	two	CD
33912	110	16	spans	span	NNS
33912	110	17	with	with	IN
33912	110	18	,	,	,
33912	110	19	at	at	IN
33912	110	20	the	the	DT
33912	110	21	most	most	JJS
33912	110	22	,	,	,
33912	110	23	one	one	CD
33912	110	24	pier	pier	NN
33912	110	25	in	in	IN
33912	110	26	the	the	DT
33912	110	27	stream	stream	NN
33912	110	28	,	,	,
33912	110	29	thus	thus	RB
33912	110	30	avoiding	avoid	VBG
33912	110	31	the	the	DT
33912	110	32	problem	problem	NN
33912	110	33	.	.	.
33912	111	1	The	the	DT
33912	111	2	principal	principal	JJ
33912	111	3	timber	timber	NN
33912	111	4	bridges	bridge	NNS
33912	111	5	as	as	IN
33912	111	6	far	far	RB
33912	111	7	west	west	NNP
33912	111	8	as	as	IN
33912	111	9	Cumberland	Cumberland	NNP
33912	111	10	were	be	VBD
33912	111	11	of	of	IN
33912	111	12	Latrobe	Latrobe	NNP
33912	111	13	's	's	POS
33912	111	14	design	design	NN
33912	111	15	.	.	.
33912	112	1	These	these	DT
33912	112	2	were	be	VBD
33912	112	3	good	good	JJ
33912	112	4	,	,	,
33912	112	5	solid	solid	JJ
33912	112	6	structures	structure	NNS
33912	112	7	of	of	IN
33912	112	8	composite	composite	JJ
33912	112	9	construction	construction	NN
33912	112	10	,	,	,
33912	112	11	in	in	IN
33912	112	12	which	which	WDT
33912	112	13	a	a	DT
33912	112	14	certain	certain	JJ
33912	112	15	amount	amount	NN
33912	112	16	of	of	IN
33912	112	17	cast	cast	NN
33912	112	18	iron	iron	NN
33912	112	19	was	be	VBD
33912	112	20	used	use	VBN
33912	112	21	in	in	IN
33912	112	22	joints	joint	NNS
33912	112	23	and	and	CC
33912	112	24	wrought	work	VBD
33912	112	25	iron	iron	NN
33912	112	26	for	for	IN
33912	112	27	certain	certain	JJ
33912	112	28	tension	tension	NN
33912	112	29	members	member	NNS
33912	112	30	.	.	.
33912	113	1	They	-PRON-	PRP
33912	113	2	were	be	VBD
33912	113	3	,	,	,
33912	113	4	however	however	RB
33912	113	5	,	,	,
33912	113	6	more	more	RBR
33912	113	7	empirical	empirical	JJ
33912	113	8	than	than	IN
33912	113	9	efficient	efficient	JJ
33912	113	10	and	and	CC
33912	113	11	,	,	,
33912	113	12	for	for	IN
33912	113	13	the	the	DT
33912	113	14	most	most	JJS
33912	113	15	part	part	NN
33912	113	16	,	,	,
33912	113	17	not	not	RB
33912	113	18	only	only	RB
33912	113	19	grossly	grossly	RB
33912	113	20	overdesigned	overdesigne	VBN
33912	113	21	but	but	CC
33912	113	22	of	of	IN
33912	113	23	decidedly	decidedly	RB
33912	113	24	difficult	difficult	JJ
33912	113	25	fabrication	fabrication	NN
33912	113	26	and	and	CC
33912	113	27	construction	construction	NN
33912	113	28	.	.	.
33912	114	1	What	what	WP
33912	114	2	is	be	VBZ
33912	114	3	interesting	interesting	JJ
33912	114	4	about	about	IN
33912	114	5	the	the	DT
33912	114	6	Latrobian	latrobian	JJ
33912	114	7	timber	timber	NN
33912	114	8	trusses	truss	NNS
33912	114	9	,	,	,
33912	114	10	however	however	RB
33912	114	11	,	,	,
33912	114	12	is	be	VBZ
33912	114	13	the	the	DT
33912	114	14	effect	effect	NN
33912	114	15	they	-PRON-	PRP
33912	114	16	appear	appear	VBP
33912	114	17	to	to	TO
33912	114	18	have	have	VB
33912	114	19	had	have	VBN
33912	114	20	upon	upon	IN
33912	114	21	Bollman	Bollman	NNP
33912	114	22	's	's	POS
33912	114	23	subsequent	subsequent	JJ
33912	114	24	work	work	NN
33912	114	25	in	in	IN
33912	114	26	the	the	DT
33912	114	27	design	design	NN
33912	114	28	of	of	IN
33912	114	29	his	-PRON-	PRP$
33912	114	30	own	own	JJ
33912	114	31	truss	truss	NN
33912	114	32	.	.	.
33912	115	1	This	this	DT
33912	115	2	effect	effect	NN
33912	115	3	is	be	VBZ
33912	115	4	evidenced	evidence	VBN
33912	115	5	by	by	IN
33912	115	6	the	the	DT
33912	115	7	marked	marked	JJ
33912	115	8	analogy	analogy	NN
33912	115	9	between	between	IN
33912	115	10	the	the	DT
33912	115	11	primary	primary	JJ
33912	115	12	structural	structural	JJ
33912	115	13	elements	element	NNS
33912	115	14	of	of	IN
33912	115	15	the	the	DT
33912	115	16	two	two	CD
33912	115	17	types	type	NNS
33912	115	18	.	.	.
33912	116	1	The	the	DT
33912	116	2	Latrobe	Latrobe	NNP
33912	116	3	truss	truss	NN
33912	116	4	at	at	IN
33912	116	5	Elysville	Elysville	NNP
33912	116	6	(	(	-LRB-
33912	116	7	fig	fig	NN
33912	116	8	.	.	.
33912	117	1	2	2	LS
33912	117	2	)	)	-RRB-
33912	117	3	was	be	VBD
33912	117	4	only	only	RB
33912	117	5	partially	partially	RB
33912	117	6	a	a	DT
33912	117	7	truss	truss	NN
33912	117	8	,	,	,
33912	117	9	inasmuch	inasmuch	JJ
33912	117	10	as	as	IN
33912	117	11	the	the	DT
33912	117	12	greater	great	JJR
33912	117	13	part	part	NN
33912	117	14	of	of	IN
33912	117	15	the	the	DT
33912	117	16	load	load	NN
33912	117	17	was	be	VBD
33912	117	18	not	not	RB
33912	117	19	carried	carry	VBN
33912	117	20	from	from	IN
33912	117	21	panel	panel	NN
33912	117	22	to	to	IN
33912	117	23	panel	panel	NN
33912	117	24	,	,	,
33912	117	25	finally	finally	RB
33912	117	26	to	to	TO
33912	117	27	appear	appear	VB
33912	117	28	at	at	IN
33912	117	29	the	the	DT
33912	117	30	abutments	abutment	NNS
33912	117	31	as	as	IN
33912	117	32	a	a	DT
33912	117	33	pure	pure	JJ
33912	117	34	vertical	vertical	JJ
33912	117	35	reaction	reaction	NN
33912	117	36	,	,	,
33912	117	37	but	but	CC
33912	117	38	was	be	VBD
33912	117	39	carried	carry	VBN
33912	117	40	from	from	IN
33912	117	41	each	each	DT
33912	117	42	panel	panel	NN
33912	117	43	(	(	-LRB-
33912	117	44	except	except	IN
33912	117	45	the	the	DT
33912	117	46	four	four	CD
33912	117	47	at	at	IN
33912	117	48	the	the	DT
33912	117	49	center	center	NN
33912	117	50	)	)	-RRB-
33912	117	51	directly	directly	RB
33912	117	52	to	to	IN
33912	117	53	the	the	DT
33912	117	54	bearing	bearing	NN
33912	117	55	points	point	NNS
33912	117	56	at	at	IN
33912	117	57	the	the	DT
33912	117	58	piers	pier	NNS
33912	117	59	by	by	IN
33912	117	60	heavy	heavy	JJ
33912	117	61	diagonal	diagonal	JJ
33912	117	62	struts	strut	NNS
33912	117	63	,	,	,
33912	117	64	after	after	IN
33912	117	65	the	the	DT
33912	117	66	fashion	fashion	NN
33912	117	67	of	of	IN
33912	117	68	the	the	DT
33912	117	69	famous	famous	JJ
33912	117	70	18th	18th	JJ
33912	117	71	-	-	HYPH
33912	117	72	century	century	NN
33912	117	73	Swiss	swiss	JJ
33912	117	74	trusses	truss	NNS
33912	117	75	of	of	IN
33912	117	76	the	the	DT
33912	117	77	Grubenmanns	Grubenmanns	NNPS
33912	117	78	.	.	.
33912	118	1	It	-PRON-	PRP
33912	118	2	was	be	VBD
33912	118	3	a	a	DT
33912	118	4	legitimate	legitimate	JJ
33912	118	5	structural	structural	JJ
33912	118	6	device	device	NN
33912	118	7	,	,	,
33912	118	8	and	and	CC
33912	118	9	the	the	DT
33912	118	10	simplest	simple	JJS
33912	118	11	means	mean	NNS
33912	118	12	of	of	IN
33912	118	13	extending	extend	VBG
33912	118	14	the	the	DT
33912	118	15	capacity	capacity	NN
33912	118	16	of	of	IN
33912	118	17	a	a	DT
33912	118	18	spanning	span	VBG
33912	118	19	system	system	NN
33912	118	20	.	.	.
33912	119	1	However	however	RB
33912	119	2	,	,	,
33912	119	3	it	-PRON-	PRP
33912	119	4	was	be	VBD
33912	119	5	defective	defective	JJ
33912	119	6	in	in	IN
33912	119	7	that	that	IN
33912	119	8	the	the	DT
33912	119	9	struts	strut	NNS
33912	119	10	applied	apply	VBD
33912	119	11	considerable	considerable	JJ
33912	119	12	horizontal	horizontal	JJ
33912	119	13	thrust	thrust	NN
33912	119	14	to	to	IN
33912	119	15	the	the	DT
33912	119	16	abutments	abutment	NNS
33912	119	17	,	,	,
33912	119	18	requiring	require	VBG
33912	119	19	heavier	heavy	JJR
33912	119	20	masonry	masonry	NN
33912	119	21	than	than	IN
33912	119	22	would	would	MD
33912	119	23	otherwise	otherwise	RB
33912	119	24	have	have	VB
33912	119	25	been	be	VBN
33912	119	26	necessary	necessary	JJ
33912	119	27	.	.	.
33912	120	1	It	-PRON-	PRP
33912	120	2	is	be	VBZ
33912	120	3	quite	quite	RB
33912	120	4	likely	likely	JJ
33912	120	5	that	that	IN
33912	120	6	Latrobe	Latrobe	NNP
33912	120	7	did	do	VBD
33912	120	8	not	not	RB
33912	120	9	have	have	VB
33912	120	10	absolute	absolute	JJ
33912	120	11	confidence	confidence	NN
33912	120	12	in	in	IN
33912	120	13	the	the	DT
33912	120	14	various	various	JJ
33912	120	15	pure	pure	JJ
33912	120	16	truss	truss	NN
33912	120	17	systems	system	NNS
33912	120	18	already	already	RB
33912	120	19	patented	patent	VBN
33912	120	20	by	by	IN
33912	120	21	Town	Town	NNP
33912	120	22	,	,	,
33912	120	23	Long	Long	NNP
33912	120	24	,	,	,
33912	120	25	and	and	CC
33912	120	26	others	other	NNS
33912	120	27	,	,	,
33912	120	28	and	and	CC
33912	120	29	preferred	prefer	VBN
33912	120	30	for	for	IN
33912	120	31	such	such	JJ
33912	120	32	strategic	strategic	JJ
33912	120	33	service	service	NN
33912	120	34	a	a	DT
33912	120	35	structure	structure	NN
33912	120	36	in	in	IN
33912	120	37	which	which	WDT
33912	120	38	the	the	DT
33912	120	39	panel	panel	NN
33912	120	40	members	member	NNS
33912	120	41	acted	act	VBD
33912	120	42	more	more	RBR
33912	120	43	or	or	CC
33912	120	44	less	less	RBR
33912	120	45	independently	independently	RB
33912	120	46	of	of	IN
33912	120	47	one	one	CD
33912	120	48	another	another	DT
33912	120	49	.	.	.
33912	121	1	It	-PRON-	PRP
33912	121	2	will	will	MD
33912	121	3	be	be	VB
33912	121	4	seen	see	VBN
33912	121	5	that	that	IN
33912	121	6	,	,	,
33912	121	7	similarly	similarly	RB
33912	121	8	,	,	,
33912	121	9	the	the	DT
33912	121	10	individual	individual	JJ
33912	121	11	panel	panel	NN
33912	121	12	loads	load	NNS
33912	121	13	in	in	IN
33912	121	14	Bollman	Bollman	NNP
33912	121	15	's	's	POS
33912	121	16	truss	truss	NN
33912	121	17	were	be	VBD
33912	121	18	carried	carry	VBN
33912	121	19	to	to	IN
33912	121	20	the	the	DT
33912	121	21	ends	end	NNS
33912	121	22	of	of	IN
33912	121	23	the	the	DT
33912	121	24	frame	frame	NN
33912	121	25	by	by	IN
33912	121	26	members	member	NNS
33912	121	27	acting	act	VBG
33912	121	28	independently	independently	RB
33912	121	29	of	of	IN
33912	121	30	one	one	CD
33912	121	31	another	another	DT
33912	121	32	.	.	.
33912	122	1	The	the	DT
33912	122	2	Bollman	Bollman	NNP
33912	122	3	Truss	Truss	NNP
33912	122	4	There	there	EX
33912	122	5	had	have	VBD
33912	122	6	never	never	RB
33912	122	7	been	be	VBN
33912	122	8	any	any	DT
33912	122	9	question	question	NN
33912	122	10	about	about	IN
33912	122	11	the	the	DT
33912	122	12	many	many	JJ
33912	122	13	serious	serious	JJ
33912	122	14	inadequacies	inadequacy	NNS
33912	122	15	of	of	IN
33912	122	16	wood	wood	NN
33912	122	17	as	as	IN
33912	122	18	a	a	DT
33912	122	19	bridge	bridge	NN
33912	122	20	material	material	NN
33912	122	21	.	.	.
33912	123	1	Decay	decay	NN
33912	123	2	and	and	CC
33912	123	3	fire	fire	NN
33912	123	4	risk	risk	NN
33912	123	5	,	,	,
33912	123	6	always	always	RB
33912	123	7	present	present	JJ
33912	123	8	,	,	,
33912	123	9	were	be	VBD
33912	123	10	the	the	DT
33912	123	11	principal	principal	JJ
33912	123	12	ones	one	NNS
33912	123	13	,	,	,
33912	123	14	involving	involve	VBG
33912	123	15	continuous	continuous	JJ
33912	123	16	expenditure	expenditure	NN
33912	123	17	for	for	IN
33912	123	18	replacement	replacement	NN
33912	123	19	of	of	IN
33912	123	20	defective	defective	JJ
33912	123	21	members	member	NNS
33912	123	22	and	and	CC
33912	123	23	for	for	IN
33912	123	24	fire	fire	NN
33912	123	25	watches	watch	NNS
33912	123	26	.	.	.
33912	124	1	It	-PRON-	PRP
33912	124	2	was	be	VBD
33912	124	3	,	,	,
33912	124	4	in	in	IN
33912	124	5	fact	fact	NN
33912	124	6	,	,	,
33912	124	7	understood	understand	VBN
33912	124	8	by	by	IN
33912	124	9	the	the	DT
33912	124	10	management	management	NN
33912	124	11	and	and	CC
33912	124	12	engineering	engineering	NN
33912	124	13	staff	staff	NN
33912	124	14	of	of	IN
33912	124	15	the	the	DT
33912	124	16	B.	B.	NNP
33912	125	1	&	&	CC
33912	125	2	O.	O.	NNP
33912	125	3	that	that	IN
33912	125	4	their	-PRON-	PRP$
33912	125	5	timber	timber	NN
33912	125	6	bridge	bridge	NN
33912	125	7	superstructures	superstructure	NNS
33912	125	8	,	,	,
33912	125	9	though	though	IN
33912	125	10	considered	consider	VBN
33912	125	11	the	the	DT
33912	125	12	finest	fine	JJS
33912	125	13	in	in	IN
33912	125	14	the	the	DT
33912	125	15	country	country	NN
33912	125	16	,	,	,
33912	125	17	were	be	VBD
33912	125	18	more	more	RBR
33912	125	19	or	or	CC
33912	125	20	less	less	RBR
33912	125	21	expedient	expedient	JJ
33912	125	22	and	and	CC
33912	125	23	were	be	VBD
33912	125	24	eventually	eventually	RB
33912	125	25	to	to	TO
33912	125	26	be	be	VB
33912	125	27	replaced	replace	VBN
33912	125	28	.	.	.
33912	126	1	In	in	IN
33912	126	2	this	this	DT
33912	126	3	regard	regard	NN
33912	126	4	it	-PRON-	PRP
33912	126	5	is	be	VBZ
33912	126	6	not	not	RB
33912	126	7	surprising	surprising	JJ
33912	126	8	that	that	IN
33912	126	9	Latrobe	Latrobe	NNP
33912	126	10	,	,	,
33912	126	11	a	a	DT
33912	126	12	man	man	NN
33912	126	13	of	of	IN
33912	126	14	considerable	considerable	JJ
33912	126	15	foresight	foresight	NN
33912	126	16	,	,	,
33912	126	17	had	have	VBD
33912	126	18	,	,	,
33912	126	19	at	at	IN
33912	126	20	an	an	DT
33912	126	21	early	early	JJ
33912	126	22	date	date	NN
33912	126	23	,	,	,
33912	126	24	given	give	VBN
33912	126	25	serious	serious	JJ
33912	126	26	thought	thought	NN
33912	126	27	to	to	IN
33912	126	28	the	the	DT
33912	126	29	possible	possible	JJ
33912	126	30	application	application	NN
33912	126	31	of	of	IN
33912	126	32	iron	iron	NN
33912	126	33	here	here	RB
33912	126	34	.	.	.
33912	127	1	[	[	-LRB-
33912	127	2	Illustration	illustration	NN
33912	127	3	:	:	:
33912	127	4	Figure	figure	VB
33912	127	5	10.--POTOMAC	10.--potomac	CD
33912	127	6	RIVER	river	NN
33912	127	7	CROSSING	CROSSING	NNPS
33912	127	8	of	of	IN
33912	127	9	the	the	DT
33912	127	10	Baltimore	Baltimore	NNP
33912	127	11	and	and	CC
33912	127	12	Ohio	Ohio	NNP
33912	127	13	at	at	IN
33912	127	14	North	North	NNP
33912	127	15	Branch	Branch	NNP
33912	127	16	,	,	,
33912	127	17	Maryland	Maryland	NNP
33912	127	18	,	,	,
33912	127	19	built	build	VBN
33912	127	20	in	in	IN
33912	127	21	1856	1856	CD
33912	127	22	.	.	.
33912	128	1	There	there	EX
33912	128	2	are	be	VBP
33912	128	3	three	three	CD
33912	128	4	Bollman	Bollman	NNP
33912	128	5	deck	deck	NN
33912	128	6	trusses	truss	NNS
33912	128	7	.	.	.
33912	129	1	(	(	-LRB-
33912	129	2	_	_	NNP
33912	129	3	Photo	Photo	NNP
33912	129	4	courtesy	courtesy	NN
33912	129	5	of	of	IN
33912	129	6	Baltimore	Baltimore	NNP
33912	129	7	and	and	CC
33912	129	8	Ohio	Ohio	NNP
33912	129	9	Railroad	Railroad	NNP
33912	129	10	.	.	.
33912	129	11	_	_	NNP
33912	129	12	)	)	-RRB-
33912	129	13	]	]	-RRB-
33912	129	14	[	[	-LRB-
33912	129	15	Illustration	illustration	NN
33912	129	16	:	:	:
33912	129	17	Figure	figure	NN
33912	129	18	11.--THE	11.--the	CD
33912	129	19	FINK	FINK	NNP
33912	129	20	TRUSS	TRUSS	NNP
33912	129	21	.	.	.
33912	130	1	(	(	-LRB-
33912	130	2	_	_	NNP
33912	130	3	Smithsonian	Smithsonian	NNP
33912	130	4	photo	photo	NN
33912	130	5	41436	41436	CD
33912	130	6	.	.	.
33912	130	7	_	_	NNP
33912	130	8	)	)	-RRB-
33912	130	9	]	]	-RRB-
33912	130	10	[	[	-LRB-
33912	130	11	Illustration	illustration	NN
33912	130	12	:	:	:
33912	130	13	WENDEL	WENDEL	NNP
33912	130	14	BOLLMAN	BOLLMAN	NNP
33912	130	15	'S	's	POS
33912	130	16	Patent	Patent	NNP
33912	130	17	Iron	Iron	NNP
33912	130	18	Suspension	Suspension	NNP
33912	130	19	Railroad	Railroad	NNP
33912	130	20	Bridge	Bridge	NNP
33912	130	21	.	.	.
33912	131	1	The	the	DT
33912	131	2	undersigned	undersigned	JJ
33912	131	3	would	would	MD
33912	131	4	inform	inform	VB
33912	131	5	the	the	DT
33912	131	6	officers	officer	NNS
33912	131	7	of	of	IN
33912	131	8	Railroads	railroad	NNS
33912	131	9	and	and	CC
33912	131	10	others	other	NNS
33912	131	11	,	,	,
33912	131	12	that	that	IN
33912	131	13	he	-PRON-	PRP
33912	131	14	is	be	VBZ
33912	131	15	prepared	prepared	JJ
33912	131	16	to	to	TO
33912	131	17	furnish	furnish	VB
33912	131	18	Drawings	drawing	NNS
33912	131	19	and	and	CC
33912	131	20	Estimates	Estimates	NNPS
33912	131	21	for	for	IN
33912	131	22	Bridges	Bridges	NNPS
33912	131	23	,	,	,
33912	131	24	Roofs	Roofs	NNP
33912	131	25	,	,	,
33912	131	26	etc	etc	FW
33912	131	27	.	.	NN
33912	131	28	,	,	,
33912	131	29	on	on	IN
33912	131	30	the	the	DT
33912	131	31	plan	plan	NN
33912	131	32	of	of	IN
33912	131	33	Bollman	Bollman	NNP
33912	131	34	's	's	POS
33912	131	35	Patent	Patent	NNP
33912	131	36	.	.	.
33912	132	1	The	the	DT
33912	132	2	performance	performance	NN
33912	132	3	of	of	IN
33912	132	4	these	these	DT
33912	132	5	bridges	bridge	NNS
33912	132	6	,	,	,
33912	132	7	some	some	DT
33912	132	8	of	of	IN
33912	132	9	which	which	WDT
33912	132	10	have	have	VBP
33912	132	11	been	be	VBN
33912	132	12	in	in	IN
33912	132	13	use	use	NN
33912	132	14	for	for	IN
33912	132	15	six	six	CD
33912	132	16	years	year	NNS
33912	132	17	,	,	,
33912	132	18	has	have	VBZ
33912	132	19	given	give	VBN
33912	132	20	entire	entire	JJ
33912	132	21	satisfaction	satisfaction	NN
33912	132	22	.	.	.
33912	133	1	Their	-PRON-	PRP$
33912	133	2	simplicity	simplicity	NN
33912	133	3	of	of	IN
33912	133	4	construction	construction	NN
33912	133	5	renders	render	VBZ
33912	133	6	repairs	repair	VBZ
33912	133	7	easy	easy	JJ
33912	133	8	and	and	CC
33912	133	9	cheap	cheap	JJ
33912	133	10	,	,	,
33912	133	11	and	and	CC
33912	133	12	by	by	IN
33912	133	13	a	a	DT
33912	133	14	peculiar	peculiar	JJ
33912	133	15	connection	connection	NN
33912	133	16	of	of	IN
33912	133	17	the	the	DT
33912	133	18	Main	Main	NNP
33912	133	19	and	and	CC
33912	133	20	Panel	Panel	NNP
33912	133	21	Rods	Rods	NNP
33912	133	22	at	at	IN
33912	133	23	the	the	DT
33912	133	24	bottom	bottom	NN
33912	133	25	of	of	IN
33912	133	26	the	the	DT
33912	133	27	Posts	Posts	NNPS
33912	133	28	,	,	,
33912	133	29	all	all	DT
33912	133	30	danger	danger	NN
33912	133	31	from	from	IN
33912	133	32	the	the	DT
33912	133	33	effects	effect	NNS
33912	133	34	of	of	IN
33912	133	35	expansion	expansion	NN
33912	133	36	,	,	,
33912	133	37	which	which	WDT
33912	133	38	has	have	VBZ
33912	133	39	heretofore	heretofore	RB
33912	133	40	been	be	VBN
33912	133	41	the	the	DT
33912	133	42	chief	chief	JJ
33912	133	43	objection	objection	NN
33912	133	44	to	to	IN
33912	133	45	Iron	Iron	NNP
33912	133	46	Bridges	Bridges	NNP
33912	133	47	,	,	,
33912	133	48	is	be	VBZ
33912	133	49	entirely	entirely	RB
33912	133	50	removed	remove	VBN
33912	133	51	.	.	.
33912	134	1	J.	J.	NNP
33912	134	2	H.	H.	NNP
33912	134	3	TEGMEYER	TEGMEYER	NNP
33912	134	4	,	,	,
33912	134	5	Baltimore	Baltimore	NNP
33912	134	6	,	,	,
33912	134	7	Md.	Md.	NNP
33912	135	1	Figure	figure	NN
33912	135	2	12.--ADVERTISEMENT	12.--ADVERTISEMENT	VBN
33912	135	3	in	in	IN
33912	135	4	the	the	DT
33912	135	5	_	_	NNP
33912	135	6	Railroad	Railroad	NNP
33912	135	7	Advocate	Advocate	NNP
33912	135	8	_	_	NNP
33912	135	9	,	,	,
33912	135	10	August	August	NNP
33912	135	11	1855	1855	CD
33912	135	12	.	.	.
33912	135	13	]	]	-RRB-
33912	136	1	The	the	DT
33912	136	2	world	world	NN
33912	136	3	's	's	POS
33912	136	4	first	first	JJ
33912	136	5	major	major	JJ
33912	136	6	iron	iron	NN
33912	136	7	bridge	bridge	NN
33912	136	8	,	,	,
33912	136	9	the	the	DT
33912	136	10	famed	famed	JJ
33912	136	11	cast	cast	NN
33912	136	12	-	-	HYPH
33912	136	13	iron	iron	NN
33912	136	14	arch	arch	NN
33912	136	15	at	at	IN
33912	136	16	Coalbrookdale	Coalbrookdale	NNP
33912	136	17	,	,	,
33912	136	18	England	England	NNP
33912	136	19	,	,	,
33912	136	20	had	have	VBD
33912	136	21	been	be	VBN
33912	136	22	constructed	construct	VBN
33912	136	23	in	in	IN
33912	136	24	1779	1779	CD
33912	136	25	.	.	.
33912	137	1	Its	-PRON-	PRP$
33912	137	2	erection	erection	NN
33912	137	3	was	be	VBD
33912	137	4	followed	follow	VBN
33912	137	5	by	by	IN
33912	137	6	rather	rather	RB
33912	137	7	sporadic	sporadic	JJ
33912	137	8	interest	interest	NN
33912	137	9	in	in	IN
33912	137	10	this	this	DT
33912	137	11	use	use	NN
33912	137	12	of	of	IN
33912	137	13	the	the	DT
33912	137	14	material	material	NN
33912	137	15	.	.	.
33912	138	1	The	the	DT
33912	138	2	first	first	JJ
33912	138	3	significant	significant	JJ
33912	138	4	use	use	NN
33912	138	5	of	of	IN
33912	138	6	iron	iron	NN
33912	138	7	in	in	IN
33912	138	8	this	this	DT
33912	138	9	country	country	NN
33912	138	10	was	be	VBD
33912	138	11	in	in	IN
33912	138	12	a	a	DT
33912	138	13	series	series	NN
33912	138	14	of	of	IN
33912	138	15	small	small	JJ
33912	138	16	trussed	trussed	JJ
33912	138	17	highway	highway	NN
33912	138	18	arches	arch	NNS
33912	138	19	erected	erect	VBN
33912	138	20	by	by	IN
33912	138	21	Squire	Squire	NNP
33912	138	22	Whipple	Whipple	NNP
33912	138	23	over	over	IN
33912	138	24	the	the	DT
33912	138	25	Erie	Erie	NNP
33912	138	26	Canal	Canal	NNP
33912	138	27	in	in	IN
33912	138	28	the	the	DT
33912	138	29	early	early	JJ
33912	138	30	1840	1840	CD
33912	138	31	's	's	POS
33912	138	32	,	,	,
33912	138	33	over	over	IN
33912	138	34	60	60	CD
33912	138	35	years	year	NNS
33912	138	36	later	later	RB
33912	138	37	.	.	.
33912	139	1	In	in	IN
33912	139	2	these	these	DT
33912	139	3	,	,	,
33912	139	4	as	as	IN
33912	139	5	in	in	IN
33912	139	6	most	most	JJS
33912	139	7	of	of	IN
33912	139	8	the	the	DT
33912	139	9	earlier	early	JJR
33912	139	10	iron	iron	NN
33912	139	11	structures	structure	NNS
33912	139	12	,	,	,
33912	139	13	an	an	DT
33912	139	14	arch	arch	NN
33912	139	15	of	of	IN
33912	139	16	cast	cast	NN
33912	139	17	iron	iron	NN
33912	139	18	was	be	VBD
33912	139	19	the	the	DT
33912	139	20	primary	primary	JJ
33912	139	21	support	support	NN
33912	139	22	.	.	.
33912	140	1	The	the	DT
33912	140	2	thrust	thrust	NN
33912	140	3	of	of	IN
33912	140	4	the	the	DT
33912	140	5	arches	arch	NNS
33912	140	6	was	be	VBD
33912	140	7	counteracted	counteract	VBN
33912	140	8	by	by	IN
33912	140	9	open	open	JJ
33912	140	10	wrought	wrought	NN
33912	140	11	-	-	HYPH
33912	140	12	iron	iron	NN
33912	140	13	links	link	NNS
33912	140	14	with	with	IN
33912	140	15	other	other	JJ
33912	140	16	wrought-	wrought-	NN
33912	140	17	and	and	CC
33912	140	18	cast	cast	VBN
33912	140	19	-	-	HYPH
33912	140	20	iron	iron	NN
33912	140	21	members	member	NNS
33912	140	22	contributing	contribute	VBG
33912	140	23	to	to	IN
33912	140	24	the	the	DT
33912	140	25	truss	truss	NN
33912	140	26	action	action	NN
33912	140	27	.	.	.
33912	141	1	The	the	DT
33912	141	2	Whipple	Whipple	NNP
33912	141	3	bridges	bridge	NNS
33912	141	4	promoted	promote	VBD
33912	141	5	a	a	DT
33912	141	6	certain	certain	JJ
33912	141	7	amount	amount	NN
33912	141	8	of	of	IN
33912	141	9	interest	interest	NN
33912	141	10	in	in	IN
33912	141	11	the	the	DT
33912	141	12	material	material	NN
33912	141	13	.	.	.
33912	142	1	In	in	IN
33912	142	2	the	the	DT
33912	142	3	B.	B.	NNP
33912	143	1	&	&	CC
33912	143	2	O.	O.	NNP
33912	144	1	's	's	POS
33912	144	2	annual	annual	JJ
33912	144	3	report	report	NN
33912	144	4	for	for	IN
33912	144	5	the	the	DT
33912	144	6	fiscal	fiscal	JJ
33912	144	7	year	year	NN
33912	144	8	1849	1849	CD
33912	144	9	appears	appear	VBZ
33912	144	10	the	the	DT
33912	144	11	first	first	JJ
33912	144	12	record	record	NN
33912	144	13	of	of	IN
33912	144	14	Latrobe	Latrobe	NNP
33912	144	15	's	's	POS
33912	144	16	interest	interest	NN
33912	144	17	in	in	IN
33912	144	18	this	this	DT
33912	144	19	important	important	JJ
33912	144	20	matter	matter	NN
33912	144	21	.	.	.
33912	145	1	In	in	IN
33912	145	2	the	the	DT
33912	145	3	president	president	NN
33912	145	4	's	's	POS
33912	145	5	message	message	NN
33912	145	6	is	be	VBZ
33912	145	7	found	find	VBN
33912	145	8	the	the	DT
33912	145	9	following	following	NN
33912	145	10	,	,	,
33912	145	11	rather	rather	RB
33912	145	12	offhand	offhand	JJ
33912	145	13	,	,	,
33912	145	14	statement	statement	NN
33912	145	15	:	:	:
33912	145	16	$	$	$
33912	145	17	6,183.19	6,183.19	CD
33912	145	18	have	have	VBP
33912	145	19	been	be	VBN
33912	145	20	expended	expend	VBN
33912	145	21	toward	toward	IN
33912	145	22	the	the	DT
33912	145	23	renewal	renewal	NN
33912	145	24	of	of	IN
33912	145	25	the	the	DT
33912	145	26	Stone	Stone	NNP
33912	145	27	Bridges	Bridges	NNPS
33912	145	28	on	on	IN
33912	145	29	the	the	DT
33912	145	30	Washington	Washington	NNP
33912	145	31	Branch	Branch	NNP
33912	145	32	,	,	,
33912	145	33	carried	carry	VBD
33912	145	34	off	off	RP
33912	145	35	by	by	IN
33912	145	36	the	the	DT
33912	145	37	flood	flood	NN
33912	145	38	of	of	IN
33912	145	39	Oct.	October	NNP
33912	145	40	7th	7th	NN
33912	145	41	,	,	,
33912	145	42	1847	1847	CD
33912	145	43	.	.	.
33912	146	1	Preparations	preparation	NNS
33912	146	2	are	be	VBP
33912	146	3	made	make	VBN
33912	146	4	and	and	CC
33912	146	5	contracts	contract	NNS
33912	146	6	entered	enter	VBN
33912	146	7	into	into	IN
33912	146	8	,	,	,
33912	146	9	for	for	IN
33912	146	10	the	the	DT
33912	146	11	reconstruction	reconstruction	NN
33912	146	12	of	of	IN
33912	146	13	the	the	DT
33912	146	14	large	large	JJ
33912	146	15	Bridges	bridge	NNS
33912	146	16	at	at	IN
33912	146	17	Little	little	JJ
33912	146	18	Patuxent	Patuxent	NNP
33912	146	19	and	and	CC
33912	146	20	at	at	IN
33912	146	21	Bladensburg	Bladensburg	NNP
33912	146	22	which	which	WDT
33912	146	23	will	will	MD
33912	146	24	be	be	VB
33912	146	25	executed	execute	VBN
33912	146	26	in	in	IN
33912	146	27	a	a	DT
33912	146	28	few	few	JJ
33912	146	29	months	month	NNS
33912	146	30	....	....	.
33912	147	1	It	-PRON-	PRP
33912	147	2	is	be	VBZ
33912	147	3	proposed	propose	VBN
33912	147	4	to	to	TO
33912	147	5	erect	erect	VB
33912	147	6	a	a	DT
33912	147	7	superstructure	superstructure	NN
33912	147	8	of	of	IN
33912	147	9	Iron	Iron	NNP
33912	147	10	upon	upon	IN
33912	147	11	stone	stone	NN
33912	147	12	abutments	abutment	NNS
33912	147	13	,	,	,
33912	147	14	at	at	IN
33912	147	15	each	each	DT
33912	147	16	place	place	NN
33912	147	17	--	--	:
33912	147	18	with	with	IN
33912	147	19	increased	increase	VBN
33912	147	20	span	span	NN
33912	147	21	,	,	,
33912	147	22	for	for	IN
33912	147	23	greater	great	JJR
33912	147	24	security	security	NN
33912	147	25	against	against	IN
33912	147	26	future	future	JJ
33912	147	27	floods	flood	NNS
33912	147	28	.	.	.
33912	148	1	It	-PRON-	PRP
33912	148	2	is	be	VBZ
33912	148	3	interesting	interesting	JJ
33912	148	4	to	to	TO
33912	148	5	note	note	VB
33912	148	6	that	that	IN
33912	148	7	it	-PRON-	PRP
33912	148	8	was	be	VBD
33912	148	9	indeed	indeed	RB
33912	148	10	Bollman	Bollman	NNP
33912	148	11	trusses	truss	VBZ
33912	148	12	to	to	TO
33912	148	13	which	which	WDT
33912	148	14	the	the	DT
33912	148	15	president	president	NN
33912	148	16	of	of	IN
33912	148	17	the	the	DT
33912	148	18	railroad	railroad	NN
33912	148	19	had	have	VBD
33912	148	20	referred	refer	VBN
33912	148	21	.	.	.
33912	149	1	How	how	WRB
33912	149	2	much	much	RB
33912	149	3	earlier	early	RBR
33912	149	4	than	than	IN
33912	149	5	this	this	DT
33912	149	6	date	date	NN
33912	149	7	Bollman	Bollman	NNP
33912	149	8	had	have	VBD
33912	149	9	evolved	evolve	VBN
33912	149	10	his	-PRON-	PRP$
33912	149	11	peculiar	peculiar	JJ
33912	149	12	trussing	trussing	JJ
33912	149	13	system	system	NN
33912	149	14	is	be	VBZ
33912	149	15	not	not	RB
33912	149	16	clear	clear	JJ
33912	149	17	.	.	.
33912	150	1	The	the	DT
33912	150	2	certain	certain	JJ
33912	150	3	influence	influence	NN
33912	150	4	of	of	IN
33912	150	5	Latrobe	Latrobe	NNP
33912	150	6	's	's	POS
33912	150	7	radiating	radiate	VBG
33912	150	8	strut	strut	NN
33912	150	9	system	system	NN
33912	150	10	of	of	IN
33912	150	11	trussing	trussing	NN
33912	150	12	has	have	VBZ
33912	150	13	been	be	VBN
33912	150	14	mentioned	mention	VBN
33912	150	15	.	.	.
33912	151	1	As	as	IN
33912	151	2	likely	likely	RB
33912	151	3	an	an	DT
33912	151	4	influence	influence	NN
33912	151	5	was	be	VBD
33912	151	6	another	another	DT
33912	151	7	basic	basic	JJ
33912	151	8	technique	technique	NN
33912	151	9	commonly	commonly	RB
33912	151	10	used	use	VBN
33912	151	11	to	to	TO
33912	151	12	increase	increase	VB
33912	151	13	the	the	DT
33912	151	14	capacity	capacity	NN
33912	151	15	of	of	IN
33912	151	16	a	a	DT
33912	151	17	simple	simple	JJ
33912	151	18	timber	timber	NN
33912	151	19	beam	beam	NN
33912	151	20	--	--	:
33912	151	21	that	that	IN
33912	151	22	of	of	IN
33912	151	23	trussing	trussing	JJ
33912	151	24	--	--	:
33912	151	25	i.e	i.e	NNP
33912	151	26	.	.	NNP
33912	151	27	,	,	,
33912	151	28	placing	place	VBG
33912	151	29	beneath	beneath	IN
33912	151	30	the	the	DT
33912	151	31	beam	beam	NN
33912	151	32	a	a	DT
33912	151	33	rod	rod	NN
33912	151	34	of	of	IN
33912	151	35	iron	iron	NN
33912	151	36	that	that	WDT
33912	151	37	was	be	VBD
33912	151	38	anchored	anchor	VBN
33912	151	39	at	at	IN
33912	151	40	the	the	DT
33912	151	41	ends	end	NNS
33912	151	42	of	of	IN
33912	151	43	the	the	DT
33912	151	44	beam	beam	NN
33912	151	45	and	and	CC
33912	151	46	held	hold	VBD
33912	151	47	a	a	DT
33912	151	48	certain	certain	JJ
33912	151	49	distance	distance	NN
33912	151	50	below	below	IN
33912	151	51	it	-PRON-	PRP
33912	151	52	at	at	IN
33912	151	53	the	the	DT
33912	151	54	center	center	NN
33912	151	55	by	by	IN
33912	151	56	a	a	DT
33912	151	57	vertical	vertical	JJ
33912	151	58	strut	strut	NN
33912	151	59	or	or	CC
33912	151	60	post	post	NN
33912	151	61	.	.	.
33912	152	1	This	this	DT
33912	152	2	combination	combination	NN
33912	152	3	thus	thus	RB
33912	152	4	became	become	VBD
33912	152	5	a	a	DT
33912	152	6	truss	truss	NN
33912	152	7	in	in	IN
33912	152	8	that	that	DT
33912	152	9	the	the	DT
33912	152	10	timber	timber	NN
33912	152	11	portion	portion	NN
33912	152	12	was	be	VBD
33912	152	13	no	no	RB
33912	152	14	longer	long	RBR
33912	152	15	subject	subject	JJ
33912	152	16	to	to	IN
33912	152	17	a	a	DT
33912	152	18	bending	bend	VBG
33912	152	19	stress	stress	NN
33912	152	20	but	but	CC
33912	152	21	to	to	IN
33912	152	22	a	a	DT
33912	152	23	simple	simple	JJ
33912	152	24	one	one	CD
33912	152	25	of	of	IN
33912	152	26	compression	compression	NN
33912	152	27	,	,	,
33912	152	28	the	the	DT
33912	152	29	rod	rod	NN
33912	152	30	absorbing	absorb	VBG
33912	152	31	the	the	DT
33912	152	32	tensile	tensile	JJ
33912	152	33	stress	stress	NN
33912	152	34	of	of	IN
33912	152	35	the	the	DT
33912	152	36	combination	combination	NN
33912	152	37	.	.	.
33912	153	1	The	the	DT
33912	153	2	effect	effect	NN
33912	153	3	was	be	VBD
33912	153	4	to	to	TO
33912	153	5	deepen	deepen	VB
33912	153	6	the	the	DT
33912	153	7	beam	beam	NN
33912	153	8	,	,	,
33912	153	9	increasing	increase	VBG
33912	153	10	the	the	DT
33912	153	11	distance	distance	NN
33912	153	12	between	between	IN
33912	153	13	its	-PRON-	PRP$
33912	153	14	extreme	extreme	JJ
33912	153	15	fibers	fiber	NNS
33912	153	16	and	and	CC
33912	153	17	--	--	:
33912	153	18	by	by	IN
33912	153	19	thus	thus	RB
33912	153	20	reducing	reduce	VBG
33912	153	21	the	the	DT
33912	153	22	bending	bend	VBG
33912	153	23	moment	moment	NN
33912	153	24	--	--	:
33912	153	25	reducing	reduce	VBG
33912	153	26	the	the	DT
33912	153	27	stress	stress	NN
33912	153	28	in	in	IN
33912	153	29	them	-PRON-	PRP
33912	153	30	(	(	-LRB-
33912	153	31	see	see	VB
33912	153	32	fig	fig	NN
33912	153	33	.	.	.
33912	154	1	3	3	LS
33912	154	2	)	)	-RRB-
33912	154	3	.	.	.
33912	155	1	[	[	-LRB-
33912	155	2	Illustration	illustration	NN
33912	155	3	:	:	:
33912	155	4	Figure	figure	NN
33912	155	5	13.--THE	13.--the	CD
33912	155	6	FOUR	four	CD
33912	155	7	BOLLMAN	BOLLMAN	NNP
33912	155	8	SPANS	span	NNS
33912	155	9	at	at	IN
33912	155	10	Harpers	Harpers	NNP
33912	155	11	Ferry	Ferry	NNP
33912	155	12	that	that	WDT
33912	155	13	survived	survive	VBD
33912	155	14	the	the	DT
33912	155	15	Civil	Civil	NNP
33912	155	16	War	War	NNP
33912	155	17	.	.	.
33912	156	1	The	the	DT
33912	156	2	spans	span	NNS
33912	156	3	were	be	VBD
33912	156	4	completed	complete	VBN
33912	156	5	in	in	IN
33912	156	6	1862	1862	CD
33912	156	7	-	-	SYM
33912	156	8	1863	1863	CD
33912	156	9	.	.	.
33912	157	1	(	(	-LRB-
33912	157	2	_	_	NNP
33912	157	3	Photo	Photo	NNP
33912	157	4	courtesy	courtesy	NN
33912	157	5	of	of	IN
33912	157	6	Baltimore	Baltimore	NNP
33912	157	7	and	and	CC
33912	157	8	Ohio	Ohio	NNP
33912	157	9	Railroad	Railroad	NNP
33912	157	10	.	.	.
33912	157	11	_	_	NNP
33912	157	12	)	)	-RRB-
33912	157	13	]	]	-RRB-
33912	157	14	It	-PRON-	PRP
33912	157	15	apparently	apparently	RB
33912	157	16	occurred	occur	VBD
33912	157	17	to	to	IN
33912	157	18	Bollman	Bollman	NNP
33912	157	19	that	that	IN
33912	157	20	by	by	IN
33912	157	21	extending	extend	VBG
33912	157	22	the	the	DT
33912	157	23	number	number	NN
33912	157	24	of	of	IN
33912	157	25	rods	rod	NNS
33912	157	26	in	in	IN
33912	157	27	a	a	DT
33912	157	28	longitudinal	longitudinal	JJ
33912	157	29	direction	direction	NN
33912	157	30	,	,	,
33912	157	31	this	this	DT
33912	157	32	effect	effect	NN
33912	157	33	could	could	MD
33912	157	34	be	be	VB
33912	157	35	practically	practically	RB
33912	157	36	amplified	amplify	VBN
33912	157	37	to	to	IN
33912	157	38	such	such	PDT
33912	157	39	an	an	DT
33912	157	40	extent	extent	NN
33912	157	41	as	as	IN
33912	157	42	to	to	TO
33912	157	43	be	be	VB
33912	157	44	capable	capable	JJ
33912	157	45	of	of	IN
33912	157	46	spanning	span	VBG
33912	157	47	considerable	considerable	JJ
33912	157	48	distances	distance	NNS
33912	157	49	.	.	.
33912	158	1	He	-PRON-	PRP
33912	158	2	almost	almost	RB
33912	158	3	certainly	certainly	RB
33912	158	4	did	do	VBD
33912	158	5	not	not	RB
33912	158	6	at	at	IN
33912	158	7	first	first	RB
33912	158	8	contemplate	contemplate	VB
33912	158	9	an	an	DT
33912	158	10	all	all	RB
33912	158	11	-	-	HYPH
33912	158	12	iron	iron	NN
33912	158	13	system	system	NN
33912	158	14	,	,	,
33912	158	15	but	but	CC
33912	158	16	rather	rather	RB
33912	158	17	a	a	DT
33912	158	18	composite	composite	JJ
33912	158	19	one	one	NN
33912	158	20	such	such	JJ
33912	158	21	as	as	IN
33912	158	22	described	describe	VBN
33912	158	23	.	.	.
33912	159	1	It	-PRON-	PRP
33912	159	2	is	be	VBZ
33912	159	3	entirely	entirely	RB
33912	159	4	likely	likely	JJ
33912	159	5	that	that	IN
33912	159	6	such	such	JJ
33912	159	7	trussed	trussed	JJ
33912	159	8	beams	beam	NNS
33912	159	9	,	,	,
33912	159	10	with	with	IN
33912	159	11	multiple	multiple	JJ
33912	159	12	systems	system	NNS
33912	159	13	of	of	IN
33912	159	14	tension	tension	NN
33912	159	15	rods	rod	NNS
33912	159	16	,	,	,
33912	159	17	were	be	VBD
33912	159	18	used	use	VBN
33912	159	19	by	by	IN
33912	159	20	Bollman	Bollman	NNP
33912	159	21	as	as	IN
33912	159	22	bridging	bridge	VBG
33912	159	23	in	in	IN
33912	159	24	temporary	temporary	JJ
33912	159	25	trestlework	trestlework	NN
33912	159	26	along	along	IN
33912	159	27	the	the	DT
33912	159	28	line	line	NN
33912	159	29	as	as	RB
33912	159	30	early	early	RB
33912	159	31	as	as	IN
33912	159	32	1845	1845	CD
33912	159	33	(	(	-LRB-
33912	159	34	see	see	UH
33912	159	35	fig	fig	NN
33912	159	36	.	.	.
33912	160	1	4	4	LS
33912	160	2	)	)	-RRB-
33912	160	3	.	.	.
33912	161	1	It	-PRON-	PRP
33912	161	2	is	be	VBZ
33912	161	3	impossible	impossible	JJ
33912	161	4	to	to	TO
33912	161	5	say	say	VB
33912	161	6	whether	whether	IN
33912	161	7	Bollman	Bollman	NNP
33912	161	8	himself	-PRON-	PRP
33912	161	9	,	,	,
33912	161	10	or	or	CC
33912	161	11	Latrobe	Latrobe	NNP
33912	161	12	,	,	,
33912	161	13	was	be	VBD
33912	161	14	struck	strike	VBN
33912	161	15	with	with	IN
33912	161	16	the	the	DT
33912	161	17	logic	logic	NN
33912	161	18	of	of	IN
33912	161	19	further	further	RB
33912	161	20	elaborating	elaborate	VBG
33912	161	21	upon	upon	IN
33912	161	22	the	the	DT
33912	161	23	system	system	NN
33912	161	24	and	and	CC
33912	161	25	,	,	,
33912	161	26	simultaneously	simultaneously	RB
33912	161	27	,	,	,
33912	161	28	translating	translate	VBG
33912	161	29	the	the	DT
33912	161	30	timber	timber	NN
33912	161	31	compression	compression	NN
33912	161	32	member	member	NN
33912	161	33	into	into	IN
33912	161	34	one	one	CD
33912	161	35	of	of	IN
33912	161	36	cast	cast	NN
33912	161	37	iron	iron	NN
33912	161	38	.	.	.
33912	162	1	Cast	Cast	VBN
33912	162	2	iron	iron	NN
33912	162	3	would	would	MD
33912	162	4	naturally	naturally	RB
33912	162	5	have	have	VB
33912	162	6	been	be	VBN
33912	162	7	selected	select	VBN
33912	162	8	for	for	IN
33912	162	9	a	a	DT
33912	162	10	member	member	NN
33912	162	11	that	that	WDT
33912	162	12	resisted	resist	VBD
33912	162	13	a	a	DT
33912	162	14	compressive	compressive	JJ
33912	162	15	stress	stress	NN
33912	162	16	,	,	,
33912	162	17	as	as	IN
33912	162	18	it	-PRON-	PRP
33912	162	19	was	be	VBD
33912	162	20	considerably	considerably	RB
33912	162	21	cheaper	cheap	JJR
33912	162	22	than	than	IN
33912	162	23	wrought	wrought	JJ
33912	162	24	iron	iron	NN
33912	162	25	.	.	.
33912	163	1	But	but	CC
33912	163	2	more	more	RBR
33912	163	3	important	important	JJ
33912	163	4	,	,	,
33912	163	5	at	at	IN
33912	163	6	that	that	DT
33912	163	7	time	time	NN
33912	163	8	wrought	work	VBD
33912	163	9	iron	iron	NN
33912	163	10	was	be	VBD
33912	163	11	not	not	RB
33912	163	12	available	available	JJ
33912	163	13	in	in	IN
33912	163	14	shapes	shape	NNS
33912	163	15	of	of	IN
33912	163	16	sufficient	sufficient	JJ
33912	163	17	sectional	sectional	JJ
33912	163	18	area	area	NN
33912	163	19	to	to	TO
33912	163	20	resist	resist	VB
33912	163	21	the	the	DT
33912	163	22	appreciable	appreciable	JJ
33912	163	23	buckling	buckling	NN
33912	163	24	stresses	stress	NNS
33912	163	25	induced	induce	VBN
33912	163	26	in	in	IN
33912	163	27	long	long	JJ
33912	163	28	compression	compression	NN
33912	163	29	members	member	NNS
33912	163	30	.	.	.
33912	164	1	The	the	DT
33912	164	2	cost	cost	NN
33912	164	3	of	of	IN
33912	164	4	building	build	VBG
33912	164	5	up	up	RP
33912	164	6	members	member	NNS
33912	164	7	to	to	IN
33912	164	8	sufficient	sufficient	JJ
33912	164	9	size	size	NN
33912	164	10	from	from	IN
33912	164	11	the	the	DT
33912	164	12	very	very	RB
33912	164	13	limited	limited	JJ
33912	164	14	selection	selection	NN
33912	164	15	of	of	IN
33912	164	16	small	small	JJ
33912	164	17	shapes	shape	NNS
33912	164	18	then	then	RB
33912	164	19	rolled	roll	VBD
33912	164	20	would	would	MD
33912	164	21	have	have	VB
33912	164	22	been	be	VBN
33912	164	23	prohibitive	prohibitive	JJ
33912	164	24	.	.	.
33912	165	1	The	the	DT
33912	165	2	trussing	truss	VBG
33912	165	3	rods	rod	NNS
33912	165	4	,	,	,
33912	165	5	subjected	subject	VBN
33912	165	6	to	to	IN
33912	165	7	tension	tension	NN
33912	165	8	,	,	,
33912	165	9	were	be	VBD
33912	165	10	of	of	IN
33912	165	11	wrought	wrought	NN
33912	165	12	iron	iron	NN
33912	165	13	inasmuch	inasmuch	NN
33912	165	14	as	as	IN
33912	165	15	the	the	DT
33912	165	16	sectional	sectional	JJ
33912	165	17	area	area	NN
33912	165	18	had	have	VBD
33912	165	19	only	only	RB
33912	165	20	to	to	TO
33912	165	21	be	be	VB
33912	165	22	sufficient	sufficient	JJ
33912	165	23	to	to	TO
33912	165	24	resist	resist	VB
33912	165	25	the	the	DT
33912	165	26	primary	primary	JJ
33912	165	27	axial	axial	JJ
33912	165	28	stress	stress	NN
33912	165	29	.	.	.
33912	166	1	The	the	DT
33912	166	2	first	first	JJ
33912	166	3	all	all	DT
33912	166	4	-	-	HYPH
33912	166	5	iron	iron	NN
33912	166	6	Bollman	Bollman	NNP
33912	166	7	truss	truss	NN
33912	166	8	was	be	VBD
33912	166	9	constructed	construct	VBN
33912	166	10	over	over	IN
33912	166	11	the	the	DT
33912	166	12	Little	Little	NNP
33912	166	13	Patuxent	Patuxent	NNP
33912	166	14	River	River	NNP
33912	166	15	at	at	IN
33912	166	16	Savage	Savage	NNP
33912	166	17	Factory	Factory	NNP
33912	166	18	,	,	,
33912	166	19	near	near	IN
33912	166	20	Laurel	Laurel	NNP
33912	166	21	,	,	,
33912	166	22	Maryland	Maryland	NNP
33912	166	23	,	,	,
33912	166	24	in	in	IN
33912	166	25	1850	1850	CD
33912	166	26	.	.	.
33912	167	1	In	in	IN
33912	167	2	the	the	DT
33912	167	3	chief	chief	JJ
33912	167	4	engineer	engineer	NN
33912	167	5	's	's	POS
33912	167	6	report	report	NN
33912	167	7	for	for	IN
33912	167	8	the	the	DT
33912	167	9	year	year	NN
33912	167	10	1850	1850	CD
33912	167	11	,	,	,
33912	167	12	Latrobe	Latrobe	NNP
33912	167	13	was	be	VBD
33912	167	14	able	able	JJ
33912	167	15	to	to	TO
33912	167	16	state	state	VB
33912	167	17	that	that	IN
33912	167	18	the	the	DT
33912	167	19	truss	truss	NN
33912	167	20	had	have	VBD
33912	167	21	been	be	VBN
33912	167	22	completed	complete	VBN
33912	167	23	and	and	CC
33912	167	24	was	be	VBD
33912	167	25	giving	give	VBG
33912	167	26	"	"	``
33912	167	27	much	much	JJ
33912	167	28	satisfaction	satisfaction	NN
33912	167	29	.	.	.
33912	167	30	"	"	''
33912	168	1	He	-PRON-	PRP
33912	168	2	went	go	VBD
33912	168	3	on	on	RP
33912	168	4	at	at	IN
33912	168	5	some	some	DT
33912	168	6	length	length	NN
33912	168	7	to	to	TO
33912	168	8	praise	praise	VB
33912	168	9	the	the	DT
33912	168	10	"	"	``
33912	168	11	valuable	valuable	JJ
33912	168	12	mechanical	mechanical	JJ
33912	168	13	features	feature	NNS
33912	168	14	"	"	``
33912	168	15	embodied	embody	VBN
33912	168	16	therein	therein	RB
33912	168	17	,	,	,
33912	168	18	and	and	CC
33912	168	19	expressed	express	VBD
33912	168	20	great	great	JJ
33912	168	21	confidence	confidence	NN
33912	168	22	that	that	DT
33912	168	23	iron	iron	NN
33912	168	24	would	would	MD
33912	168	25	become	become	VB
33912	168	26	as	as	RB
33912	168	27	important	important	JJ
33912	168	28	a	a	DT
33912	168	29	material	material	NN
33912	168	30	in	in	IN
33912	168	31	the	the	DT
33912	168	32	field	field	NN
33912	168	33	of	of	IN
33912	168	34	civil	civil	JJ
33912	168	35	engineering	engineering	NN
33912	168	36	as	as	IN
33912	168	37	it	-PRON-	PRP
33912	168	38	was	be	VBD
33912	168	39	in	in	IN
33912	168	40	mechanical	mechanical	JJ
33912	168	41	engineering	engineering	NN
33912	168	42	.	.	.
33912	169	1	[	[	-LRB-
33912	169	2	Illustration	illustration	NN
33912	169	3	:	:	:
33912	169	4	Figure	figure	NN
33912	169	5	14.--THE	14.--the	CD
33912	169	6	HARPERS	HARPERS	NNP
33912	169	7	FERRY	FERRY	NNP
33912	169	8	BRIDGE	BRIDGE	NNP
33912	169	9	as	as	IN
33912	169	10	completed	complete	VBN
33912	169	11	after	after	IN
33912	169	12	the	the	DT
33912	169	13	Civil	Civil	NNP
33912	169	14	War	War	NNP
33912	169	15	.	.	.
33912	170	1	It	-PRON-	PRP
33912	170	2	was	be	VBD
33912	170	3	used	use	VBN
33912	170	4	by	by	IN
33912	170	5	the	the	DT
33912	170	6	Baltimore	Baltimore	NNP
33912	170	7	and	and	CC
33912	170	8	Ohio	Ohio	NNP
33912	170	9	until	until	IN
33912	170	10	1894	1894	CD
33912	170	11	,	,	,
33912	170	12	and	and	CC
33912	170	13	as	as	IN
33912	170	14	a	a	DT
33912	170	15	highway	highway	NN
33912	170	16	bridge	bridge	NN
33912	170	17	until	until	IN
33912	170	18	1936	1936	CD
33912	170	19	.	.	.
33912	171	1	(	(	-LRB-
33912	171	2	Photo	photo	NN
33912	171	3	690	690	CD
33912	171	4	,	,	,
33912	171	5	Baltimore	Baltimore	NNP
33912	171	6	and	and	CC
33912	171	7	Ohio	Ohio	NNP
33912	171	8	Collection	Collection	NNP
33912	171	9	,	,	,
33912	171	10	Museum	Museum	NNP
33912	171	11	of	of	IN
33912	171	12	History	History	NNP
33912	171	13	and	and	CC
33912	171	14	Technology	Technology	NNP
33912	171	15	.	.	.
33912	171	16	)	)	-RRB-
33912	171	17	]	]	-RRB-
33912	172	1	The	the	DT
33912	172	2	cost	cost	NN
33912	172	3	of	of	IN
33912	172	4	this	this	DT
33912	172	5	first	first	JJ
33912	172	6	major	major	JJ
33912	172	7	Bollman	Bollman	NNP
33912	172	8	bridge	bridge	NN
33912	172	9	was	be	VBD
33912	172	10	$	$	$
33912	172	11	23,825.00	23,825.00	CD
33912	172	12	.	.	.
33912	173	1	Its	-PRON-	PRP$
33912	173	2	span	span	NN
33912	173	3	was	be	VBD
33912	173	4	76	76	CD
33912	173	5	feet	foot	NNS
33912	173	6	.	.	.
33912	174	1	Latrobe	Latrobe	NNP
33912	174	2	's	's	POS
33912	174	3	confidence	confidence	NN
33912	174	4	was	be	VBD
33912	174	5	well	well	RB
33912	174	6	placed	place	VBN
33912	174	7	.	.	.
33912	175	1	The	the	DT
33912	175	2	Savage	Savage	NNP
33912	175	3	span	span	NN
33912	175	4	and	and	CC
33912	175	5	another	another	DT
33912	175	6	at	at	IN
33912	175	7	Bladensburg	Bladensburg	NNP
33912	175	8	may	may	MD
33912	175	9	be	be	VB
33912	175	10	considered	consider	VBN
33912	175	11	successful	successful	JJ
33912	175	12	pilot	pilot	NN
33912	175	13	models	model	NNS
33912	175	14	,	,	,
33912	175	15	for	for	IN
33912	175	16	,	,	,
33912	175	17	in	in	IN
33912	175	18	spite	spite	NN
33912	175	19	of	of	IN
33912	175	20	a	a	DT
33912	175	21	certain	certain	JJ
33912	175	22	undercurrent	undercurrent	NN
33912	175	23	of	of	IN
33912	175	24	mistrust	mistrust	NN
33912	175	25	of	of	IN
33912	175	26	iron	iron	NN
33912	175	27	bridges	bridge	NNS
33912	175	28	within	within	IN
33912	175	29	the	the	DT
33912	175	30	engineering	engineering	NN
33912	175	31	profession	profession	NN
33912	175	32	--	--	:
33912	175	33	due	due	JJ
33912	175	34	mainly	mainly	RB
33912	175	35	to	to	IN
33912	175	36	a	a	DT
33912	175	37	number	number	NN
33912	175	38	of	of	IN
33912	175	39	failures	failure	NNS
33912	175	40	of	of	IN
33912	175	41	improperly	improperly	RB
33912	175	42	designed	design	VBN
33912	175	43	spans	span	NNS
33912	175	44	--	--	:
33912	175	45	Latrobe	Latrobe	NNP
33912	175	46	felt	feel	VBD
33912	175	47	there	there	EX
33912	175	48	was	be	VBD
33912	175	49	sufficient	sufficient	JJ
33912	175	50	justification	justification	NN
33912	175	51	for	for	IN
33912	175	52	the	the	DT
33912	175	53	unqualified	unqualified	JJ
33912	175	54	adoption	adoption	NN
33912	175	55	of	of	IN
33912	175	56	iron	iron	NN
33912	175	57	in	in	IN
33912	175	58	all	all	DT
33912	175	59	subsequent	subsequent	JJ
33912	175	60	major	major	JJ
33912	175	61	bridge	bridge	NN
33912	175	62	structures	structure	NNS
33912	175	63	on	on	IN
33912	175	64	the	the	DT
33912	175	65	B.	B.	NNP
33912	176	1	&	&	CC
33912	176	2	O.	O.	NNP
33912	177	1	Almost	almost	RB
33912	177	2	immediately	immediately	RB
33912	177	3	following	follow	VBG
33912	177	4	completion	completion	NN
33912	177	5	of	of	IN
33912	177	6	the	the	DT
33912	177	7	Savage	Savage	NNP
33912	177	8	Bridge	Bridge	NNP
33912	177	9	,	,	,
33912	177	10	Bollman	Bollman	NNP
33912	177	11	undertook	undertake	VBD
33912	177	12	the	the	DT
33912	177	13	design	design	NN
33912	177	14	of	of	IN
33912	177	15	replacements	replacement	NNS
33912	177	16	for	for	IN
33912	177	17	the	the	DT
33912	177	18	large	large	JJ
33912	177	19	Patapsco	Patapsco	NNP
33912	177	20	River	River	NNP
33912	177	21	span	span	NN
33912	177	22	at	at	IN
33912	177	23	Elysville	Elysville	NNP
33912	177	24	(	(	-LRB-
33912	177	25	now	now	RB
33912	177	26	Daniels	Daniels	NNP
33912	177	27	)	)	-RRB-
33912	177	28	,	,	,
33912	177	29	Maryland	Maryland	NNP
33912	177	30	,	,	,
33912	177	31	and	and	CC
33912	177	32	the	the	DT
33912	177	33	so	so	RB
33912	177	34	-	-	HYPH
33912	177	35	called	call	VBN
33912	177	36	Winchester	Winchester	NNP
33912	177	37	span	span	NN
33912	177	38	of	of	IN
33912	177	39	the	the	DT
33912	177	40	B.	B.	NNP
33912	178	1	&	&	CC
33912	178	2	O.	O.	NNP
33912	179	1	's	's	POS
33912	179	2	largest	large	JJS
33912	179	3	and	and	CC
33912	179	4	most	most	RBS
33912	179	5	important	important	JJ
33912	179	6	bridge	bridge	NN
33912	179	7	,	,	,
33912	179	8	that	that	IN
33912	179	9	over	over	IN
33912	179	10	the	the	DT
33912	179	11	Potomac	Potomac	NNP
33912	179	12	at	at	IN
33912	179	13	Harpers	Harpers	NNP
33912	179	14	Ferry	Ferry	NNP
33912	179	15	.	.	.
33912	180	1	Harpers	Harpers	NNP
33912	180	2	Ferry	Ferry	NNP
33912	180	3	bridge	bridge	NN
33912	180	4	,	,	,
33912	180	5	a	a	DT
33912	180	6	timber	timber	NN
33912	180	7	structure	structure	NN
33912	180	8	,	,	,
33912	180	9	had	have	VBD
33912	180	10	been	be	VBN
33912	180	11	designed	design	VBN
33912	180	12	by	by	IN
33912	180	13	Latrobe	Latrobe	NNP
33912	180	14	and	and	CC
33912	180	15	built	build	VBN
33912	180	16	in	in	IN
33912	180	17	1836	1836	CD
33912	180	18	-	-	SYM
33912	180	19	1837	1837	CD
33912	180	20	by	by	IN
33912	180	21	the	the	DT
33912	180	22	noted	note	VBN
33912	180	23	bridge	bridge	NN
33912	180	24	constructor	constructor	NN
33912	180	25	Lewis	Lewis	NNP
33912	180	26	Wernwag	Wernwag	NNP
33912	180	27	.	.	.
33912	181	1	It	-PRON-	PRP
33912	181	2	was	be	VBD
33912	181	3	peculiar	peculiar	JJ
33912	181	4	in	in	IN
33912	181	5	having	have	VBG
33912	181	6	a	a	DT
33912	181	7	turnout	turnout	NN
33912	181	8	,	,	,
33912	181	9	near	near	IN
33912	181	10	the	the	DT
33912	181	11	Virginia	Virginia	NNP
33912	181	12	shore	shore	NN
33912	181	13	,	,	,
33912	181	14	whereby	whereby	WRB
33912	181	15	a	a	DT
33912	181	16	subsidiary	subsidiary	JJ
33912	181	17	road	road	NN
33912	181	18	branched	branch	VBD
33912	181	19	off	off	RP
33912	181	20	to	to	IN
33912	181	21	Winchester	Winchester	NNP
33912	181	22	(	(	-LRB-
33912	181	23	see	see	VB
33912	181	24	fig	fig	NN
33912	181	25	.	.	.
33912	182	1	6	6	LS
33912	182	2	)	)	-RRB-
33912	182	3	.	.	.
33912	183	1	Only	only	RB
33912	183	2	the	the	DT
33912	183	3	single	single	JJ
33912	183	4	span	span	NN
33912	183	5	on	on	IN
33912	183	6	this	this	DT
33912	183	7	line	line	NN
33912	183	8	,	,	,
33912	183	9	situated	situate	VBN
33912	183	10	between	between	IN
33912	183	11	the	the	DT
33912	183	12	midriver	midriver	NN
33912	183	13	switch	switch	NN
33912	183	14	and	and	CC
33912	183	15	the	the	DT
33912	183	16	shore	shore	NN
33912	183	17	,	,	,
33912	183	18	was	be	VBD
33912	183	19	slated	slate	VBN
33912	183	20	for	for	IN
33912	183	21	replacement	replacement	NN
33912	183	22	,	,	,
33912	183	23	as	as	IN
33912	183	24	the	the	DT
33912	183	25	other	other	JJ
33912	183	26	seven	seven	CD
33912	183	27	spans	span	NNS
33912	183	28	of	of	IN
33912	183	29	the	the	DT
33912	183	30	bridge	bridge	NN
33912	183	31	had	have	VBD
33912	183	32	been	be	VBN
33912	183	33	virtually	virtually	RB
33912	183	34	reconstructed	reconstruct	VBN
33912	183	35	in	in	IN
33912	183	36	the	the	DT
33912	183	37	decade	decade	NN
33912	183	38	or	or	CC
33912	183	39	so	so	RB
33912	183	40	of	of	IN
33912	183	41	their	-PRON-	PRP$
33912	183	42	history	history	NN
33912	183	43	and	and	CC
33912	183	44	were	be	VBD
33912	183	45	in	in	IN
33912	183	46	sound	sound	JJ
33912	183	47	condition	condition	NN
33912	183	48	at	at	IN
33912	183	49	the	the	DT
33912	183	50	time	time	NN
33912	183	51	.	.	.
33912	184	1	The	the	DT
33912	184	2	Winchester	Winchester	NNP
33912	184	3	span	span	NN
33912	184	4	(	(	-LRB-
33912	184	5	fig	fig	NN
33912	184	6	.	.	.
33912	185	1	8)	8)	CD
33912	185	2	,	,	,
33912	185	3	which	which	WDT
33912	185	4	was	be	VBD
33912	185	5	the	the	DT
33912	185	6	first	first	JJ
33912	185	7	Bollman	Bollman	NNP
33912	185	8	truss	truss	NN
33912	185	9	to	to	TO
33912	185	10	embody	embody	VB
33912	185	11	sufficient	sufficient	JJ
33912	185	12	refinement	refinement	NN
33912	185	13	of	of	IN
33912	185	14	detail	detail	NN
33912	185	15	to	to	TO
33912	185	16	be	be	VB
33912	185	17	considered	consider	VBN
33912	185	18	a	a	DT
33912	185	19	prototype	prototype	NN
33912	185	20	,	,	,
33912	185	21	was	be	VBD
33912	185	22	completed	complete	VBN
33912	185	23	in	in	IN
33912	185	24	1851	1851	CD
33912	185	25	.	.	.
33912	186	1	Bollman	Bollman	NNP
33912	186	2	was	be	VBD
33912	186	3	extremely	extremely	RB
33912	186	4	proud	proud	JJ
33912	186	5	of	of	IN
33912	186	6	the	the	DT
33912	186	7	work	work	NN
33912	186	8	,	,	,
33912	186	9	with	with	IN
33912	186	10	perfect	perfect	JJ
33912	186	11	justification	justification	NN
33912	186	12	it	-PRON-	PRP
33912	186	13	may	may	MD
33912	186	14	be	be	VB
33912	186	15	said	say	VBN
33912	186	16	.	.	.
33912	187	1	The	the	DT
33912	187	2	124-foot	124-foot	CD
33912	187	3	span	span	NN
33912	187	4	was	be	VBD
33912	187	5	fabricated	fabricate	VBN
33912	187	6	in	in	IN
33912	187	7	the	the	DT
33912	187	8	railroad	railroad	NN
33912	187	9	's	's	POS
33912	187	10	extensive	extensive	JJ
33912	187	11	Mount	Mount	NNP
33912	187	12	Clair	Clair	NNP
33912	187	13	shops	shop	NNS
33912	187	14	.	.	.
33912	188	1	It	-PRON-	PRP
33912	188	2	was	be	VBD
33912	188	3	subdivided	subdivide	VBN
33912	188	4	into	into	IN
33912	188	5	eight	eight	CD
33912	188	6	panels	panel	NNS
33912	188	7	by	by	IN
33912	188	8	seven	seven	CD
33912	188	9	struts	strut	NNS
33912	188	10	and	and	CC
33912	188	11	seven	seven	CD
33912	188	12	pairs	pair	NNS
33912	188	13	of	of	IN
33912	188	14	truss	truss	NN
33912	188	15	rods	rod	NNS
33912	188	16	.	.	.
33912	189	1	An	an	DT
33912	189	2	interesting	interesting	JJ
33912	189	3	difference	difference	NN
33912	189	4	between	between	IN
33912	189	5	this	this	DT
33912	189	6	span	span	NN
33912	189	7	and	and	CC
33912	189	8	Bollman	Bollman	NNP
33912	189	9	's	's	POS
33912	189	10	succeeding	succeed	VBG
33912	189	11	bridges	bridge	NNS
33912	189	12	was	be	VBD
33912	189	13	his	-PRON-	PRP$
33912	189	14	use	use	NN
33912	189	15	of	of	IN
33912	189	16	granite	granite	NN
33912	189	17	rather	rather	RB
33912	189	18	than	than	IN
33912	189	19	cast	cast	VBN
33912	189	20	iron	iron	NN
33912	189	21	for	for	IN
33912	189	22	the	the	DT
33912	189	23	towers	tower	NNS
33912	189	24	.	.	.
33912	190	1	The	the	DT
33912	190	2	span	span	NN
33912	190	3	consisted	consist	VBD
33912	190	4	of	of	IN
33912	190	5	three	three	CD
33912	190	6	parallel	parallel	JJ
33912	190	7	lines	line	NNS
33912	190	8	of	of	IN
33912	190	9	trussing	truss	VBG
33912	190	10	to	to	TO
33912	190	11	accommodate	accommodate	VB
33912	190	12	a	a	DT
33912	190	13	common	common	JJ
33912	190	14	road	road	NN
33912	190	15	in	in	IN
33912	190	16	addition	addition	NN
33912	190	17	to	to	IN
33912	190	18	the	the	DT
33912	190	19	single	single	JJ
33912	190	20	-	-	HYPH
33912	190	21	track	track	NN
33912	190	22	Winchester	Winchester	NNP
33912	190	23	line	line	NN
33912	190	24	.	.	.
33912	191	1	The	the	DT
33912	191	2	distinctive	distinctive	JJ
33912	191	3	feature	feature	NN
33912	191	4	of	of	IN
33912	191	5	the	the	DT
33912	191	6	Bollman	Bollman	NNP
33912	191	7	system	system	NN
33912	191	8	was	be	VBD
33912	191	9	the	the	DT
33912	191	10	previously	previously	RB
33912	191	11	mentioned	mention	VBN
33912	191	12	series	series	NN
33912	191	13	of	of	IN
33912	191	14	diagonal	diagonal	JJ
33912	191	15	truss	truss	NN
33912	191	16	links	link	NNS
33912	191	17	in	in	IN
33912	191	18	combination	combination	NN
33912	191	19	with	with	IN
33912	191	20	a	a	DT
33912	191	21	cast	cast	NN
33912	191	22	-	-	HYPH
33912	191	23	iron	iron	NN
33912	191	24	compression	compression	NN
33912	191	25	chord	chord	NN
33912	191	26	,	,	,
33912	191	27	which	which	WDT
33912	191	28	Bollman	Bollman	NNP
33912	191	29	called	call	VBD
33912	191	30	the	the	DT
33912	191	31	"	"	``
33912	191	32	stretcher	stretcher	NN
33912	191	33	.	.	.
33912	191	34	"	"	''
33912	192	1	The	the	DT
33912	192	2	spacing	spacing	NN
33912	192	3	between	between	IN
33912	192	4	the	the	DT
33912	192	5	chord	chord	NN
33912	192	6	and	and	CC
33912	192	7	the	the	DT
33912	192	8	junction	junction	NN
33912	192	9	of	of	IN
33912	192	10	each	each	DT
33912	192	11	pair	pair	NN
33912	192	12	of	of	IN
33912	192	13	links	link	NNS
33912	192	14	was	be	VBD
33912	192	15	maintained	maintain	VBN
33912	192	16	by	by	IN
33912	192	17	a	a	DT
33912	192	18	vertical	vertical	JJ
33912	192	19	post	post	NN
33912	192	20	or	or	CC
33912	192	21	strut	strut	NN
33912	192	22	,	,	,
33912	192	23	also	also	RB
33912	192	24	cast	cast	VBD
33912	192	25	.	.	.
33912	193	1	[	[	-LRB-
33912	193	2	Illustration	illustration	NN
33912	193	3	:	:	:
33912	193	4	Figure	Figure	NNP
33912	193	5	15.--NORTH	15.--north	CD
33912	193	6	STREET	STREET	NNP
33912	193	7	(	(	-LRB-
33912	193	8	now	now	RB
33912	193	9	Guilford	Guilford	NNP
33912	193	10	Avenue	Avenue	NNP
33912	193	11	)	)	-RRB-
33912	193	12	bridge	bridge	NN
33912	193	13	,	,	,
33912	193	14	Baltimore	Baltimore	NNP
33912	193	15	.	.	.
33912	194	1	In	in	IN
33912	194	2	this	this	DT
33912	194	3	transitional	transitional	JJ
33912	194	4	composite	composite	JJ
33912	194	5	structure	structure	NN
33912	194	6	cast	cast	NN
33912	194	7	iron	iron	NN
33912	194	8	was	be	VBD
33912	194	9	used	use	VBN
33912	194	10	only	only	RB
33912	194	11	in	in	IN
33912	194	12	the	the	DT
33912	194	13	relatively	relatively	RB
33912	194	14	short	short	JJ
33912	194	15	sections	section	NNS
33912	194	16	of	of	IN
33912	194	17	the	the	DT
33912	194	18	upper	upper	JJ
33912	194	19	chord	chord	NN
33912	194	20	.	.	.
33912	195	1	For	for	IN
33912	195	2	the	the	DT
33912	195	3	long	long	RB
33912	195	4	unsupported	unsupported	JJ
33912	195	5	compression	compression	NN
33912	195	6	members	member	NNS
33912	195	7	of	of	IN
33912	195	8	the	the	DT
33912	195	9	web	web	NN
33912	195	10	system	system	NN
33912	195	11	,	,	,
33912	195	12	standard	standard	JJ
33912	195	13	wrought	wrought	NN
33912	195	14	-	-	HYPH
33912	195	15	iron	iron	NN
33912	195	16	angles	angle	NNS
33912	195	17	and	and	CC
33912	195	18	channels	channel	NNS
33912	195	19	were	be	VBD
33912	195	20	built	build	VBN
33912	195	21	up	up	RP
33912	195	22	into	into	IN
33912	195	23	a	a	DT
33912	195	24	large	large	JJ
33912	195	25	section	section	NN
33912	195	26	.	.	.
33912	196	1	The	the	DT
33912	196	2	decorative	decorative	JJ
33912	196	3	cast	cast	NN
33912	196	4	-	-	HYPH
33912	196	5	iron	iron	NN
33912	196	6	end	end	NN
33912	196	7	posts	post	NNS
33912	196	8	were	be	VBD
33912	196	9	non	non	JJ
33912	196	10	-	-	JJ
33912	196	11	structural	structural	JJ
33912	196	12	.	.	.
33912	197	1	(	(	-LRB-
33912	197	2	Photo	photo	NN
33912	197	3	in	in	IN
33912	197	4	the	the	DT
33912	197	5	L.	L.	NNP
33912	197	6	N.	N.	NNP
33912	197	7	Edwards	Edwards	NNP
33912	197	8	Collection	Collection	NNP
33912	197	9	,	,	,
33912	197	10	Museum	Museum	NNP
33912	197	11	of	of	IN
33912	197	12	History	History	NNP
33912	197	13	and	and	CC
33912	197	14	Technology	Technology	NNP
33912	197	15	.	.	.
33912	197	16	)	)	-RRB-
33912	197	17	]	]	-RRB-
33912	198	1	Much	much	JJ
33912	198	2	of	of	IN
33912	198	3	the	the	DT
33912	198	4	appeal	appeal	NN
33912	198	5	of	of	IN
33912	198	6	this	this	DT
33912	198	7	design	design	NN
33912	198	8	lay	lie	VBD
33912	198	9	unquestionably	unquestionably	RB
33912	198	10	in	in	IN
33912	198	11	the	the	DT
33912	198	12	sense	sense	NN
33912	198	13	of	of	IN
33912	198	14	security	security	NN
33912	198	15	derived	derive	VBN
33912	198	16	from	from	IN
33912	198	17	the	the	DT
33912	198	18	fact	fact	NN
33912	198	19	that	that	IN
33912	198	20	each	each	DT
33912	198	21	of	of	IN
33912	198	22	the	the	DT
33912	198	23	systems	system	NNS
33912	198	24	acted	act	VBD
33912	198	25	independently	independently	RB
33912	198	26	to	to	TO
33912	198	27	carry	carry	VB
33912	198	28	its	-PRON-	PRP$
33912	198	29	load	load	NN
33912	198	30	to	to	IN
33912	198	31	the	the	DT
33912	198	32	abutments	abutment	NNS
33912	198	33	.	.	.
33912	199	1	The	the	DT
33912	199	2	lower	low	JJR
33912	199	3	chords	chord	NNS
33912	199	4	,	,	,
33912	199	5	actually	actually	RB
33912	199	6	nonfunctional	nonfunctional	JJ
33912	199	7	in	in	IN
33912	199	8	the	the	DT
33912	199	9	primary	primary	JJ
33912	199	10	structure	structure	NN
33912	199	11	,	,	,
33912	199	12	were	be	VBD
33912	199	13	included	include	VBN
33912	199	14	merely	merely	RB
33912	199	15	to	to	TO
33912	199	16	preserve	preserve	VB
33912	199	17	the	the	DT
33912	199	18	proper	proper	JJ
33912	199	19	longitudinal	longitudinal	JJ
33912	199	20	spacing	spacing	NN
33912	199	21	between	between	IN
33912	199	22	the	the	DT
33912	199	23	lower	low	JJR
33912	199	24	ends	end	NNS
33912	199	25	of	of	IN
33912	199	26	the	the	DT
33912	199	27	struts	strut	NNS
33912	199	28	.	.	.
33912	200	1	A	a	DT
33912	200	2	certain	certain	JJ
33912	200	3	lack	lack	NN
33912	200	4	of	of	IN
33912	200	5	rigidity	rigidity	NN
33912	200	6	was	be	VBD
33912	200	7	inherent	inherent	JJ
33912	200	8	in	in	IN
33912	200	9	the	the	DT
33912	200	10	system	system	NN
33912	200	11	due	due	IN
33912	200	12	to	to	IN
33912	200	13	that	that	DT
33912	200	14	very	very	JJ
33912	200	15	discontinuity	discontinuity	NN
33912	200	16	which	which	WDT
33912	200	17	characterized	characterize	VBD
33912	200	18	its	-PRON-	PRP$
33912	200	19	action	action	NN
33912	200	20	;	;	:
33912	200	21	however	however	RB
33912	200	22	,	,	,
33912	200	23	this	this	DT
33912	200	24	was	be	VBD
33912	200	25	compensated	compensate	VBN
33912	200	26	for	for	IN
33912	200	27	by	by	IN
33912	200	28	a	a	DT
33912	200	29	pair	pair	NN
33912	200	30	of	of	IN
33912	200	31	light	light	JJ
33912	200	32	diagonal	diagonal	JJ
33912	200	33	stay	stay	NN
33912	200	34	rods	rod	NNS
33912	200	35	crossing	cross	VBG
33912	200	36	each	each	DT
33912	200	37	panel	panel	NN
33912	200	38	.	.	.
33912	201	1	These	these	DT
33912	201	2	rods	rod	NNS
33912	201	3	served	serve	VBD
33912	201	4	the	the	DT
33912	201	5	additional	additional	JJ
33912	201	6	function	function	NN
33912	201	7	of	of	IN
33912	201	8	distributing	distribute	VBG
33912	201	9	concentrated	concentrated	JJ
33912	201	10	loads	load	NNS
33912	201	11	to	to	IN
33912	201	12	adjacent	adjacent	JJ
33912	201	13	struts	strut	NNS
33912	201	14	much	much	RB
33912	201	15	in	in	IN
33912	201	16	the	the	DT
33912	201	17	manner	manner	NN
33912	201	18	of	of	IN
33912	201	19	the	the	DT
33912	201	20	bridging	bridging	NN
33912	201	21	between	between	IN
33912	201	22	floor	floor	NN
33912	201	23	joists	joist	NNS
33912	201	24	in	in	IN
33912	201	25	a	a	DT
33912	201	26	building	building	NN
33912	201	27	.	.	.
33912	202	1	In	in	IN
33912	202	2	the	the	DT
33912	202	3	Winchester	Winchester	NNP
33912	202	4	span	span	NN
33912	202	5	the	the	DT
33912	202	6	floor	floor	NN
33912	202	7	system	system	NN
33912	202	8	was	be	VBD
33912	202	9	of	of	IN
33912	202	10	timber	timber	NN
33912	202	11	for	for	IN
33912	202	12	reasons	reason	NNS
33912	202	13	of	of	IN
33912	202	14	economy	economy	NN
33912	202	15	.	.	.
33912	203	1	This	this	DT
33912	203	2	was	be	VBD
33912	203	3	a	a	DT
33912	203	4	very	very	RB
33912	203	5	minor	minor	JJ
33912	203	6	weakness	weakness	NN
33912	203	7	inasmuch	inasmuch	NN
33912	203	8	as	as	IN
33912	203	9	any	any	DT
33912	203	10	stick	stick	NN
33912	203	11	could	could	MD
33912	203	12	be	be	VB
33912	203	13	quickly	quickly	RB
33912	203	14	replaced	replace	VBN
33912	203	15	,	,	,
33912	203	16	and	and	CC
33912	203	17	without	without	IN
33912	203	18	disturbing	disturb	VBG
33912	203	19	the	the	DT
33912	203	20	function	function	NN
33912	203	21	of	of	IN
33912	203	22	the	the	DT
33912	203	23	structure	structure	NN
33912	203	24	.	.	.
33912	204	1	Bollman	Bollman	NNP
33912	204	2	received	receive	VBD
33912	204	3	a	a	DT
33912	204	4	patent	patent	NN
33912	204	5	for	for	IN
33912	204	6	his	-PRON-	PRP$
33912	204	7	truss	truss	NN
33912	204	8	in	in	IN
33912	204	9	January	January	NNP
33912	204	10	1852	1852	CD
33912	204	11	,	,	,
33912	204	12	and	and	CC
33912	204	13	in	in	IN
33912	204	14	the	the	DT
33912	204	15	same	same	JJ
33912	204	16	year	year	NN
33912	204	17	published	publish	VBD
33912	204	18	a	a	DT
33912	204	19	booklet	booklet	NN
33912	204	20	describing	describe	VBG
33912	204	21	his	-PRON-	PRP$
33912	204	22	system	system	NN
33912	204	23	in	in	IN
33912	204	24	general	general	JJ
33912	204	25	and	and	CC
33912	204	26	the	the	DT
33912	204	27	Harpers	Harpers	NNP
33912	204	28	Ferry	Ferry	NNP
33912	204	29	span	span	NN
33912	204	30	in	in	IN
33912	204	31	particular	particular	JJ
33912	204	32	.	.	.
33912	205	1	Here	here	RB
33912	205	2	,	,	,
33912	205	3	he	-PRON-	PRP
33912	205	4	first	first	RB
33912	205	5	calls	call	VBZ
33912	205	6	it	-PRON-	PRP
33912	205	7	a	a	DT
33912	205	8	"	"	``
33912	205	9	suspension	suspension	NN
33912	205	10	and	and	CC
33912	205	11	trussed	truss	VBN
33912	205	12	bridge	bridge	NN
33912	205	13	,	,	,
33912	205	14	"	"	''
33912	205	15	which	which	WDT
33912	205	16	is	be	VBZ
33912	205	17	indeed	indeed	RB
33912	205	18	an	an	DT
33912	205	19	accurate	accurate	JJ
33912	205	20	designation	designation	NN
33912	205	21	for	for	IN
33912	205	22	a	a	DT
33912	205	23	system	system	NN
33912	205	24	which	which	WDT
33912	205	25	is	be	VBZ
33912	205	26	not	not	RB
33912	205	27	strictly	strictly	RB
33912	205	28	a	a	DT
33912	205	29	truss	truss	NN
33912	205	30	because	because	IN
33912	205	31	it	-PRON-	PRP
33912	205	32	has	have	VBZ
33912	205	33	no	no	DT
33912	205	34	active	active	JJ
33912	205	35	lower	low	JJR
33912	205	36	chord	chord	NN
33912	205	37	.	.	.
33912	206	1	(	(	-LRB-
33912	206	2	The	the	DT
33912	206	3	analogy	analogy	NN
33912	206	4	to	to	IN
33912	206	5	a	a	DT
33912	206	6	suspension	suspension	NN
33912	206	7	bridge	bridge	NN
33912	206	8	is	be	VBZ
33912	206	9	quite	quite	RB
33912	206	10	clear	clear	JJ
33912	206	11	,	,	,
33912	206	12	each	each	DT
33912	206	13	pair	pair	NN
33912	206	14	of	of	IN
33912	206	15	primary	primary	JJ
33912	206	16	rods	rod	NNS
33912	206	17	being	be	VBG
33912	206	18	comparable	comparable	JJ
33912	206	19	to	to	IN
33912	206	20	a	a	DT
33912	206	21	suspension	suspension	NN
33912	206	22	cable	cable	NN
33912	206	23	.	.	.
33912	206	24	)	)	-RRB-
33912	207	1	Thereafter	thereafter	RB
33912	207	2	,	,	,
33912	207	3	Bollman	Bollman	NNP
33912	207	4	's	's	POS
33912	207	5	invention	invention	NN
33912	207	6	was	be	VBD
33912	207	7	generally	generally	RB
33912	207	8	termed	term	VBN
33912	207	9	a	a	DT
33912	207	10	suspension	suspension	NN
33912	207	11	truss	truss	NN
33912	207	12	.	.	.
33912	208	1	INFLUENCE	influence	NN
33912	208	2	OF	of	IN
33912	208	3	THE	the	DT
33912	208	4	TRUSS	TRUSS	NNP
33912	208	5	Bollman	Bollman	NNP
33912	208	6	's	's	POS
33912	208	7	1852	1852	CD
33912	208	8	publication	publication	NN
33912	208	9	was	be	VBD
33912	208	10	widely	widely	RB
33912	208	11	disseminated	disseminate	VBN
33912	208	12	here	here	RB
33912	208	13	and	and	CC
33912	208	14	abroad	abroad	RB
33912	208	15	and	and	CC
33912	208	16	studied	study	VBN
33912	208	17	with	with	IN
33912	208	18	respectful	respectful	JJ
33912	208	19	interest	interest	NN
33912	208	20	by	by	IN
33912	208	21	the	the	DT
33912	208	22	engineering	engineering	NN
33912	208	23	profession	profession	NN
33912	208	24	.	.	.
33912	209	1	Its	-PRON-	PRP$
33912	209	2	drawings	drawing	NNS
33912	209	3	of	of	IN
33912	209	4	the	the	DT
33912	209	5	structure	structure	NN
33912	209	6	were	be	VBD
33912	209	7	copied	copy	VBN
33912	209	8	in	in	IN
33912	209	9	a	a	DT
33912	209	10	number	number	NN
33912	209	11	of	of	IN
33912	209	12	leading	lead	VBG
33912	209	13	technical	technical	JJ
33912	209	14	journals	journal	NNS
33912	209	15	in	in	IN
33912	209	16	England	England	NNP
33912	209	17	and	and	CC
33912	209	18	Germany	Germany	NNP
33912	209	19	.	.	.
33912	210	1	Although	although	IN
33912	210	2	there	there	EX
33912	210	3	is	be	VBZ
33912	210	4	no	no	DT
33912	210	5	record	record	NN
33912	210	6	that	that	IN
33912	210	7	the	the	DT
33912	210	8	type	type	NN
33912	210	9	was	be	VBD
33912	210	10	ever	ever	RB
33912	210	11	reproduced	reproduce	VBN
33912	210	12	in	in	IN
33912	210	13	Europe	Europe	NNP
33912	210	14	,	,	,
33912	210	15	there	there	EX
33912	210	16	can	can	MD
33912	210	17	be	be	VB
33912	210	18	little	little	JJ
33912	210	19	doubt	doubt	NN
33912	210	20	that	that	IN
33912	210	21	this	this	DT
33912	210	22	successful	successful	JJ
33912	210	23	structural	structural	JJ
33912	210	24	use	use	NN
33912	210	25	of	of	IN
33912	210	26	iron	iron	NN
33912	210	27	by	by	IN
33912	210	28	the	the	DT
33912	210	29	most	most	RBS
33912	210	30	eminent	eminent	JJ
33912	210	31	railroad	railroad	NN
33912	210	32	in	in	IN
33912	210	33	the	the	DT
33912	210	34	United	United	NNP
33912	210	35	States	States	NNP
33912	210	36	and	and	CC
33912	210	37	its	-PRON-	PRP$
33912	210	38	endorsement	endorsement	NN
33912	210	39	by	by	IN
33912	210	40	an	an	DT
33912	210	41	engineer	engineer	NN
33912	210	42	of	of	IN
33912	210	43	Latrobe	Latrobe	NNP
33912	210	44	's	's	POS
33912	210	45	status	status	NN
33912	210	46	gave	give	VBD
33912	210	47	great	great	JJ
33912	210	48	impetus	impetus	NN
33912	210	49	to	to	IN
33912	210	50	the	the	DT
33912	210	51	general	general	JJ
33912	210	52	adoption	adoption	NN
33912	210	53	of	of	IN
33912	210	54	the	the	DT
33912	210	55	material	material	NN
33912	210	56	.	.	.
33912	211	1	This	this	DT
33912	211	2	influence	influence	NN
33912	211	3	was	be	VBD
33912	211	4	certainly	certainly	RB
33912	211	5	equal	equal	JJ
33912	211	6	to	to	IN
33912	211	7	that	that	DT
33912	211	8	of	of	IN
33912	211	9	Stephenson	Stephenson	NNP
33912	211	10	's	's	POS
33912	211	11	tubular	tubular	JJ
33912	211	12	iron	iron	NN
33912	211	13	bridge	bridge	NNP
33912	211	14	of	of	IN
33912	211	15	1850	1850	CD
33912	211	16	over	over	IN
33912	211	17	the	the	DT
33912	211	18	Menai	Menai	NNP
33912	211	19	Strait	Strait	NNP
33912	211	20	,	,	,
33912	211	21	or	or	CC
33912	211	22	Roebling	Roebling	NNP
33912	211	23	's	's	POS
33912	211	24	iron	iron	NN
33912	211	25	-	-	HYPH
33912	211	26	wire	wire	NN
33912	211	27	suspension	suspension	NN
33912	211	28	bridge	bridge	NN
33912	211	29	of	of	IN
33912	211	30	1855	1855	CD
33912	211	31	over	over	IN
33912	211	32	Niagara	Niagara	NNP
33912	211	33	gorge	gorge	NN
33912	211	34	.	.	.
33912	212	1	The	the	DT
33912	212	2	Bollman	Bollman	NNP
33912	212	3	design	design	NN
33912	212	4	had	have	VBD
33912	212	5	perhaps	perhaps	RB
33912	212	6	even	even	RB
33912	212	7	greater	great	JJR
33912	212	8	influence	influence	NN
33912	212	9	,	,	,
33912	212	10	as	as	IN
33912	212	11	the	the	DT
33912	212	12	B.	B.	NNP
33912	213	1	&	&	CC
33912	213	2	O.	O.	NNP
33912	213	3	immediately	immediately	RB
33912	213	4	launched	launch	VBD
33912	213	5	the	the	DT
33912	213	6	system	system	NN
33912	213	7	with	with	IN
33912	213	8	great	great	JJ
33912	213	9	energy	energy	NN
33912	213	10	and	and	CC
33912	213	11	in	in	IN
33912	213	12	great	great	JJ
33912	213	13	numbers	number	NNS
33912	213	14	to	to	TO
33912	213	15	replace	replace	VB
33912	213	16	its	-PRON-	PRP$
33912	213	17	timber	timber	NN
33912	213	18	spans	span	NNS
33912	213	19	;	;	:
33912	213	20	on	on	IN
33912	213	21	the	the	DT
33912	213	22	other	other	JJ
33912	213	23	hand	hand	NN
33912	213	24	,	,	,
33912	213	25	Roebling	Roebling	NNP
33912	213	26	's	's	POS
33912	213	27	structure	structure	NN
33912	213	28	was	be	VBD
33912	213	29	never	never	RB
33912	213	30	duplicated	duplicate	VBN
33912	213	31	in	in	IN
33912	213	32	railroad	railroad	NN
33912	213	33	service	service	NN
33912	213	34	,	,	,
33912	213	35	and	and	CC
33912	213	36	Stephenson	Stephenson	NNP
33912	213	37	's	's	POS
33912	213	38	only	only	RB
33912	213	39	once	once	RB
33912	213	40	.	.	.
33912	214	1	[	[	-LRB-
33912	214	2	Illustration	illustration	NN
33912	214	3	:	:	:
33912	214	4	Figure	figure	NN
33912	214	5	16.--_Left	16.--_left	CD
33912	214	6	:	:	:
33912	214	7	_	_	NNP
33912	214	8	CONJECTURAL	CONJECTURAL	NNP
33912	214	9	SECTION	SECTION	NNP
33912	214	10	of	of	IN
33912	214	11	Bollman	Bollman	NNP
33912	214	12	's	's	POS
33912	214	13	segmental	segmental	JJ
33912	214	14	wrought	wrought	NN
33912	214	15	-	-	HYPH
33912	214	16	iron	iron	NN
33912	214	17	column	column	NN
33912	214	18	,	,	,
33912	214	19	about	about	RB
33912	214	20	1860	1860	CD
33912	214	21	,	,	,
33912	214	22	and	and	CC
33912	214	23	section	section	NN
33912	214	24	of	of	IN
33912	214	25	the	the	DT
33912	214	26	standard	standard	JJ
33912	214	27	Phoenix	Phoenix	NNP
33912	214	28	column	column	NN
33912	214	29	;	;	:
33912	214	30	_	_	NNP
33912	214	31	right	right	RB
33912	214	32	:	:	:
33912	214	33	_	_	NNP
33912	214	34	Phoenix	Phoenix	NNP
33912	214	35	column	column	NN
33912	214	36	as	as	IN
33912	214	37	used	use	VBN
33912	214	38	in	in	IN
33912	214	39	truss	truss	NNP
33912	214	40	-	-	HYPH
33912	214	41	bridge	bridge	NN
33912	214	42	compression	compression	NN
33912	214	43	members	member	NNS
33912	214	44	.	.	.
33912	214	45	]	]	-RRB-
33912	215	1	EVALUATION	EVALUATION	NNS
33912	215	2	OF	of	IN
33912	215	3	THE	the	DT
33912	215	4	TRUSS	TRUSS	NNP
33912	215	5	By	by	IN
33912	215	6	the	the	DT
33912	215	7	late	late	JJ
33912	215	8	1850	1850	CD
33912	215	9	's	's	POS
33912	215	10	iron	iron	NN
33912	215	11	was	be	VBD
33912	215	12	well	well	RB
33912	215	13	established	establish	VBN
33912	215	14	as	as	IN
33912	215	15	a	a	DT
33912	215	16	bridge	bridge	NN
33912	215	17	material	material	NN
33912	215	18	throughout	throughout	IN
33912	215	19	the	the	DT
33912	215	20	world	world	NN
33912	215	21	.	.	.
33912	216	1	Once	once	IN
33912	216	2	the	the	DT
33912	216	3	previous	previous	JJ
33912	216	4	fears	fear	NNS
33912	216	5	of	of	IN
33912	216	6	iron	iron	NN
33912	216	7	had	have	VBD
33912	216	8	been	be	VBN
33912	216	9	stilled	still	VBN
33912	216	10	and	and	CC
33912	216	11	the	the	DT
33912	216	12	attention	attention	NN
33912	216	13	of	of	IN
33912	216	14	engineers	engineer	NNS
33912	216	15	was	be	VBD
33912	216	16	directed	direct	VBN
33912	216	17	to	to	IN
33912	216	18	the	the	DT
33912	216	19	interpretation	interpretation	NN
33912	216	20	of	of	IN
33912	216	21	existing	existing	JJ
33912	216	22	and	and	CC
33912	216	23	new	new	JJ
33912	216	24	spanning	span	VBG
33912	216	25	methods	method	NNS
33912	216	26	into	into	IN
33912	216	27	metal	metal	NN
33912	216	28	,	,	,
33912	216	29	the	the	DT
33912	216	30	Bollman	Bollman	NNP
33912	216	31	truss	truss	NN
33912	216	32	began	begin	VBD
33912	216	33	to	to	TO
33912	216	34	suffer	suffer	VB
33912	216	35	somewhat	somewhat	RB
33912	216	36	from	from	IN
33912	216	37	the	the	DT
33912	216	38	comparison	comparison	NN
33912	216	39	.	.	.
33912	217	1	Although	although	IN
33912	217	2	its	-PRON-	PRP$
33912	217	3	components	component	NNS
33912	217	4	were	be	VBD
33912	217	5	simple	simple	JJ
33912	217	6	to	to	TO
33912	217	7	fabricate	fabricate	VB
33912	217	8	and	and	CC
33912	217	9	its	-PRON-	PRP$
33912	217	10	analysis	analysis	NN
33912	217	11	and	and	CC
33912	217	12	design	design	NN
33912	217	13	were	be	VBD
33912	217	14	straightforward	straightforward	JJ
33912	217	15	,	,	,
33912	217	16	it	-PRON-	PRP
33912	217	17	was	be	VBD
33912	217	18	less	less	RBR
33912	217	19	economical	economical	JJ
33912	217	20	of	of	IN
33912	217	21	material	material	NN
33912	217	22	than	than	IN
33912	217	23	the	the	DT
33912	217	24	more	more	RBR
33912	217	25	conventional	conventional	JJ
33912	217	26	panel	panel	NN
33912	217	27	trusses	truss	NNS
33912	217	28	such	such	JJ
33912	217	29	as	as	IN
33912	217	30	the	the	DT
33912	217	31	Pratt	Pratt	NNP
33912	217	32	and	and	CC
33912	217	33	Whipple	Whipple	NNP
33912	217	34	types	type	NNS
33912	217	35	.	.	.
33912	218	1	Additionally	additionally	RB
33912	218	2	,	,	,
33912	218	3	there	there	EX
33912	218	4	was	be	VBD
33912	218	5	the	the	DT
33912	218	6	requisite	requisite	JJ
33912	218	7	amount	amount	NN
33912	218	8	of	of	IN
33912	218	9	secondary	secondary	JJ
33912	218	10	metal	metal	NN
33912	218	11	in	in	IN
33912	218	12	lower	low	JJR
33912	218	13	chords	chord	NNS
33912	218	14	and	and	CC
33912	218	15	braces	brace	NNS
33912	218	16	necessary	necessary	JJ
33912	218	17	for	for	IN
33912	218	18	stability	stability	NN
33912	218	19	and	and	CC
33912	218	20	rigidity	rigidity	NN
33912	218	21	.	.	.
33912	219	1	A	a	DT
33912	219	2	factor	factor	NN
33912	219	3	difficult	difficult	JJ
33912	219	4	to	to	TO
33912	219	5	assess	assess	VB
33912	219	6	is	be	VBZ
33912	219	7	Bollman	Bollman	NNP
33912	219	8	's	's	POS
33912	219	9	handling	handling	NN
33912	219	10	of	of	IN
33912	219	11	his	-PRON-	PRP$
33912	219	12	patent	patent	NN
33912	219	13	,	,	,
33912	219	14	which	which	WDT
33912	219	15	was	be	VBD
33912	219	16	renewed	renew	VBN
33912	219	17	in	in	IN
33912	219	18	1866	1866	CD
33912	219	19	.	.	.
33912	220	1	There	there	EX
33912	220	2	is	be	VBZ
33912	220	3	sufficient	sufficient	JJ
33912	220	4	evidence	evidence	NN
33912	220	5	to	to	TO
33912	220	6	conclude	conclude	VB
33912	220	7	that	that	IN
33912	220	8	he	-PRON-	PRP
33912	220	9	considered	consider	VBD
33912	220	10	the	the	DT
33912	220	11	patent	patent	NN
33912	220	12	valuable	valuable	JJ
33912	220	13	because	because	IN
33912	220	14	it	-PRON-	PRP
33912	220	15	was	be	VBD
33912	220	16	based	base	VBN
33912	220	17	upon	upon	IN
33912	220	18	a	a	DT
33912	220	19	sound	sound	JJ
33912	220	20	design	design	NN
33912	220	21	.	.	.
33912	221	1	Therefore	therefore	RB
33912	221	2	,	,	,
33912	221	3	he	-PRON-	PRP
33912	221	4	probably	probably	RB
33912	221	5	established	establish	VBD
33912	221	6	a	a	DT
33912	221	7	high	high	JJ
33912	221	8	license	license	NN
33912	221	9	fee	fee	NN
33912	221	10	which	which	WDT
33912	221	11	,	,	,
33912	221	12	with	with	IN
33912	221	13	the	the	DT
33912	221	14	truss	truss	NN
33912	221	15	's	's	POS
33912	221	16	other	other	JJ
33912	221	17	shortcomings	shortcoming	NNS
33912	221	18	,	,	,
33912	221	19	was	be	VBD
33912	221	20	sufficient	sufficient	JJ
33912	221	21	to	to	TO
33912	221	22	discourage	discourage	VB
33912	221	23	its	-PRON-	PRP$
33912	221	24	use	use	NN
33912	221	25	by	by	IN
33912	221	26	other	other	JJ
33912	221	27	railroads	railroad	NNS
33912	221	28	.	.	.
33912	222	1	As	as	IN
33912	222	2	patron	patron	NN
33912	222	3	,	,	,
33912	222	4	the	the	DT
33912	222	5	B.	B.	NNP
33912	223	1	&	&	CC
33912	223	2	O.	O.	NNP
33912	223	3	had	have	VBD
33912	223	4	naturally	naturally	RB
33912	223	5	had	have	VBN
33912	223	6	full	full	JJ
33912	223	7	rights	right	NNS
33912	223	8	to	to	IN
33912	223	9	its	-PRON-	PRP$
33912	223	10	use	use	NN
33912	223	11	.	.	.
33912	224	1	An	an	DT
33912	224	2	additional	additional	JJ
33912	224	3	defect	defect	NN
33912	224	4	,	,	,
33912	224	5	acknowledged	acknowledge	VBN
33912	224	6	even	even	RB
33912	224	7	by	by	IN
33912	224	8	Bollman	Bollman	NNP
33912	224	9	,	,	,
33912	224	10	arose	arise	VBD
33912	224	11	because	because	IN
33912	224	12	of	of	IN
33912	224	13	the	the	DT
33912	224	14	unequal	unequal	JJ
33912	224	15	length	length	NN
33912	224	16	of	of	IN
33912	224	17	the	the	DT
33912	224	18	links	link	NNS
33912	224	19	in	in	IN
33912	224	20	each	each	DT
33912	224	21	group	group	NN
33912	224	22	except	except	IN
33912	224	23	the	the	DT
33912	224	24	center	center	NN
33912	224	25	one	one	CD
33912	224	26	.	.	.
33912	225	1	This	this	DT
33912	225	2	caused	cause	VBD
33912	225	3	an	an	DT
33912	225	4	unevenness	unevenness	NN
33912	225	5	in	in	IN
33912	225	6	the	the	DT
33912	225	7	thermal	thermal	JJ
33912	225	8	expansion	expansion	NN
33912	225	9	and	and	CC
33912	225	10	contraction	contraction	NN
33912	225	11	of	of	IN
33912	225	12	the	the	DT
33912	225	13	framework	framework	NN
33912	225	14	,	,	,
33912	225	15	with	with	IN
33912	225	16	the	the	DT
33912	225	17	result	result	NN
33912	225	18	that	that	IN
33912	225	19	the	the	DT
33912	225	20	bridges	bridge	NNS
33912	225	21	were	be	VBD
33912	225	22	difficult	difficult	JJ
33912	225	23	to	to	TO
33912	225	24	keep	keep	VB
33912	225	25	in	in	IN
33912	225	26	adjustment	adjustment	NN
33912	225	27	.	.	.
33912	226	1	This	this	DT
33912	226	2	had	have	VBD
33912	226	3	the	the	DT
33912	226	4	practical	practical	JJ
33912	226	5	effect	effect	NN
33912	226	6	of	of	IN
33912	226	7	virtually	virtually	RB
33912	226	8	limiting	limit	VBG
33912	226	9	the	the	DT
33912	226	10	system	system	NN
33912	226	11	to	to	TO
33912	226	12	intermediate	intermediate	VB
33912	226	13	span	span	NN
33912	226	14	lengths	length	NNS
33912	226	15	,	,	,
33912	226	16	up	up	RB
33912	226	17	to	to	IN
33912	226	18	about	about	IN
33912	226	19	150	150	CD
33912	226	20	feet	foot	NNS
33912	226	21	.	.	.
33912	227	1	For	for	IN
33912	227	2	longer	long	JJR
33912	227	3	spans	span	NNS
33912	227	4	the	the	DT
33912	227	5	B.	B.	NNP
33912	228	1	&	&	CC
33912	228	2	O.	O.	NNP
33912	228	3	employed	employ	VBD
33912	228	4	the	the	DT
33912	228	5	truss	truss	NN
33912	228	6	of	of	IN
33912	228	7	another	another	DT
33912	228	8	of	of	IN
33912	228	9	Latrobe	Latrobe	NNP
33912	228	10	's	's	POS
33912	228	11	assistants	assistant	NNS
33912	228	12	,	,	,
33912	228	13	German	German	NNP
33912	228	14	-	-	HYPH
33912	228	15	born	bear	VBN
33912	228	16	and	and	CC
33912	228	17	technically	technically	RB
33912	228	18	trained	train	VBN
33912	228	19	Albert	Albert	NNP
33912	228	20	Fink	Fink	NNP
33912	228	21	.	.	.
33912	229	1	The	the	DT
33912	229	2	Fink	Fink	NNP
33912	229	3	truss	truss	NN
33912	229	4	was	be	VBD
33912	229	5	evolved	evolve	VBN
33912	229	6	contemporaneously	contemporaneously	RB
33912	229	7	with	with	IN
33912	229	8	Bollman	Bollman	NNP
33912	229	9	's	's	POS
33912	229	10	and	and	CC
33912	229	11	was	be	VBD
33912	229	12	structurally	structurally	RB
33912	229	13	quite	quite	RB
33912	229	14	similar	similar	JJ
33912	229	15	,	,	,
33912	229	16	being	be	VBG
33912	229	17	a	a	DT
33912	229	18	suspension	suspension	NN
33912	229	19	truss	truss	NN
33912	229	20	with	with	IN
33912	229	21	no	no	DT
33912	229	22	lower	low	JJR
33912	229	23	chord	chord	NN
33912	229	24	.	.	.
33912	230	1	The	the	DT
33912	230	2	principal	principal	JJ
33912	230	3	difference	difference	NN
33912	230	4	was	be	VBD
33912	230	5	the	the	DT
33912	230	6	symmetry	symmetry	NN
33912	230	7	of	of	IN
33912	230	8	Fink	Fink	NNP
33912	230	9	's	's	POS
33912	230	10	plan	plan	NN
33912	230	11	,	,	,
33912	230	12	which	which	WDT
33912	230	13	was	be	VBD
33912	230	14	achieved	achieve	VBN
33912	230	15	by	by	IN
33912	230	16	carrying	carry	VBG
33912	230	17	the	the	DT
33912	230	18	individual	individual	JJ
33912	230	19	panel	panel	NN
33912	230	20	loads	load	NNS
33912	230	21	from	from	IN
33912	230	22	the	the	DT
33912	230	23	panel	panel	NN
33912	230	24	points	point	NNS
33912	230	25	to	to	TO
33912	230	26	increasingly	increasingly	RB
33912	230	27	longer	long	RBR
33912	230	28	panel	panel	NN
33912	230	29	units	unit	NNS
33912	230	30	before	before	IN
33912	230	31	having	have	VBG
33912	230	32	them	-PRON-	PRP
33912	230	33	appear	appear	VB
33912	230	34	at	at	IN
33912	230	35	the	the	DT
33912	230	36	end	end	NN
33912	230	37	bearings	bearing	NNS
33912	230	38	.	.	.
33912	231	1	This	this	DT
33912	231	2	eliminated	eliminate	VBD
33912	231	3	the	the	DT
33912	231	4	weakness	weakness	NN
33912	231	5	of	of	IN
33912	231	6	unequal	unequal	JJ
33912	231	7	strains	strain	NNS
33912	231	8	.	.	.
33912	232	1	The	the	DT
33912	232	2	design	design	NN
33912	232	3	was	be	VBD
33912	232	4	basically	basically	RB
33912	232	5	a	a	DT
33912	232	6	more	more	RBR
33912	232	7	rational	rational	JJ
33912	232	8	one	one	NN
33912	232	9	,	,	,
33912	232	10	and	and	CC
33912	232	11	it	-PRON-	PRP
33912	232	12	came	come	VBD
33912	232	13	to	to	TO
33912	232	14	be	be	VB
33912	232	15	widely	widely	RB
33912	232	16	used	use	VBN
33912	232	17	in	in	IN
33912	232	18	spans	span	NNS
33912	232	19	of	of	IN
33912	232	20	up	up	IN
33912	232	21	to	to	TO
33912	232	22	250	250	CD
33912	232	23	feet	foot	NNS
33912	232	24	,	,	,
33912	232	25	generally	generally	RB
33912	232	26	as	as	IN
33912	232	27	a	a	DT
33912	232	28	deck	deck	NN
33912	232	29	-	-	HYPH
33912	232	30	type	type	NN
33912	232	31	truss	truss	NN
33912	232	32	(	(	-LRB-
33912	232	33	see	see	UH
33912	232	34	fig	fig	NN
33912	232	35	.	.	.
33912	233	1	11	11	CD
33912	233	2	)	)	-RRB-
33912	233	3	.	.	.
33912	234	1	W.	W.	NNP
33912	234	2	Bollman	Bollman	NNP
33912	234	3	and	and	CC
33912	234	4	Company	Company	NNP
33912	234	5	Bollman	Bollman	NNP
33912	234	6	resigned	resign	VBD
33912	234	7	from	from	IN
33912	234	8	the	the	DT
33912	234	9	Baltimore	Baltimore	NNP
33912	234	10	and	and	CC
33912	234	11	Ohio	Ohio	NNP
33912	234	12	in	in	IN
33912	234	13	1858	1858	CD
33912	234	14	to	to	TO
33912	234	15	form	form	VB
33912	234	16	,	,	,
33912	234	17	with	with	IN
33912	234	18	John	John	NNP
33912	234	19	H.	H.	NNP
33912	234	20	Tegmeyer	Tegmeyer	NNP
33912	234	21	and	and	CC
33912	234	22	John	John	NNP
33912	234	23	Clark	Clark	NNP
33912	234	24	,	,	,
33912	234	25	two	two	CD
33912	234	26	of	of	IN
33912	234	27	his	-PRON-	PRP$
33912	234	28	former	former	JJ
33912	234	29	B.	B.	NNP
33912	235	1	&	&	CC
33912	235	2	O.	O.	NNP
33912	235	3	assistants	assistant	NNS
33912	235	4	,	,	,
33912	235	5	a	a	DT
33912	235	6	bridge	bridge	NN
33912	235	7	-	-	HYPH
33912	235	8	building	building	NN
33912	235	9	firm	firm	NN
33912	235	10	in	in	IN
33912	235	11	Baltimore	Baltimore	NNP
33912	235	12	known	know	VBN
33912	235	13	as	as	IN
33912	235	14	W.	W.	NNP
33912	235	15	Bollman	Bollman	NNP
33912	235	16	and	and	CC
33912	235	17	Company	Company	NNP
33912	235	18	.	.	.
33912	236	1	This	this	DT
33912	236	2	was	be	VBD
33912	236	3	apparently	apparently	RB
33912	236	4	the	the	DT
33912	236	5	first	first	JJ
33912	236	6	organization	organization	NN
33912	236	7	in	in	IN
33912	236	8	the	the	DT
33912	236	9	United	United	NNP
33912	236	10	States	States	NNP
33912	236	11	to	to	TO
33912	236	12	design	design	VB
33912	236	13	,	,	,
33912	236	14	fabricate	fabricate	VB
33912	236	15	,	,	,
33912	236	16	and	and	CC
33912	236	17	erect	erect	VB
33912	236	18	iron	iron	NN
33912	236	19	bridges	bridge	NNS
33912	236	20	and	and	CC
33912	236	21	structures	structure	NNS
33912	236	22	,	,	,
33912	236	23	pioneering	pioneer	VBG
33912	236	24	in	in	IN
33912	236	25	what	what	WP
33912	236	26	25	25	CD
33912	236	27	years	year	NNS
33912	236	28	later	later	RB
33912	236	29	had	have	VBD
33912	236	30	become	become	VBN
33912	236	31	an	an	DT
33912	236	32	immense	immense	JJ
33912	236	33	industry	industry	NN
33912	236	34	.	.	.
33912	237	1	The	the	DT
33912	237	2	firm	firm	NN
33912	237	3	had	have	VBD
33912	237	4	its	-PRON-	PRP$
33912	237	5	foundation	foundation	NN
33912	237	6	at	at	IN
33912	237	7	least	least	JJS
33912	237	8	as	as	RB
33912	237	9	early	early	RB
33912	237	10	as	as	IN
33912	237	11	1855	1855	CD
33912	237	12	when	when	WRB
33912	237	13	advertisements	advertisement	NNS
33912	237	14	to	to	TO
33912	237	15	supply	supply	VB
33912	237	16	designs	design	NNS
33912	237	17	and	and	CC
33912	237	18	estimates	estimate	NNS
33912	237	19	for	for	IN
33912	237	20	Bollman	Bollman	NNP
33912	237	21	bridges	bridge	NNS
33912	237	22	appeared	appear	VBD
33912	237	23	over	over	IN
33912	237	24	Tegmeyer	Tegmeyer	NNP
33912	237	25	's	's	POS
33912	237	26	name	name	NN
33912	237	27	in	in	IN
33912	237	28	several	several	JJ
33912	237	29	railroad	railroad	NN
33912	237	30	journals	journal	NNS
33912	237	31	(	(	-LRB-
33912	237	32	see	see	VB
33912	237	33	fig	fig	NN
33912	237	34	.	.	.
33912	238	1	12	12	CD
33912	238	2	)	)	-RRB-
33912	238	3	.	.	.
33912	239	1	Bollman	Bollman	NNP
33912	239	2	's	's	POS
33912	239	3	separation	separation	NN
33912	239	4	from	from	IN
33912	239	5	the	the	DT
33912	239	6	B.	B.	NNP
33912	240	1	&	&	CC
33912	240	2	O.	O.	NNP
33912	240	3	was	be	VBD
33912	240	4	not	not	RB
33912	240	5	a	a	DT
33912	240	6	complete	complete	JJ
33912	240	7	one	one	NN
33912	240	8	.	.	.
33912	241	1	The	the	DT
33912	241	2	railroad	railroad	NN
33912	241	3	continued	continue	VBD
33912	241	4	its	-PRON-	PRP$
33912	241	5	program	program	NN
33912	241	6	of	of	IN
33912	241	7	replacing	replace	VBG
33912	241	8	timber	timber	NN
33912	241	9	bridges	bridge	NNS
33912	241	10	with	with	IN
33912	241	11	Bollman	Bollman	NNP
33912	241	12	trusses	truss	NNS
33912	241	13	,	,	,
33912	241	14	and	and	CC
33912	241	15	contracted	contract	VBN
33912	241	16	with	with	IN
33912	241	17	W.	W.	NNP
33912	241	18	Bollman	Bollman	NNP
33912	241	19	and	and	CC
33912	241	20	Company	Company	NNP
33912	241	21	for	for	IN
33912	241	22	design	design	NN
33912	241	23	and	and	CC
33912	241	24	a	a	DT
33912	241	25	certain	certain	JJ
33912	241	26	amount	amount	NN
33912	241	27	of	of	IN
33912	241	28	fabrication	fabrication	NN
33912	241	29	.	.	.
33912	242	1	There	there	EX
33912	242	2	is	be	VBZ
33912	242	3	some	some	DT
33912	242	4	likelihood	likelihood	NN
33912	242	5	that	that	WDT
33912	242	6	eventually	eventually	RB
33912	242	7	fabrication	fabrication	NN
33912	242	8	was	be	VBD
33912	242	9	entirely	entirely	RB
33912	242	10	discontinued	discontinue	VBN
33912	242	11	at	at	IN
33912	242	12	Mount	Mount	NNP
33912	242	13	Clair	Clair	NNP
33912	242	14	,	,	,
33912	242	15	and	and	CC
33912	242	16	all	all	DT
33912	242	17	parts	part	NNS
33912	242	18	subsequently	subsequently	RB
33912	242	19	purchased	purchase	VBD
33912	242	20	from	from	IN
33912	242	21	Bollman	Bollman	NNP
33912	242	22	.	.	.
33912	243	1	The	the	DT
33912	243	2	firm	firm	NN
33912	243	3	prospered	prospered	NN
33912	243	4	,	,	,
33912	243	5	erecting	erect	VBG
33912	243	6	a	a	DT
33912	243	7	number	number	NN
33912	243	8	of	of	IN
33912	243	9	major	major	JJ
33912	243	10	railroad	railroad	NN
33912	243	11	bridges	bridge	NNS
33912	243	12	in	in	IN
33912	243	13	Mexico	Mexico	NNP
33912	243	14	,	,	,
33912	243	15	Cuba	Cuba	NNP
33912	243	16	,	,	,
33912	243	17	and	and	CC
33912	243	18	Chile	Chile	NNP
33912	243	19	.	.	.
33912	244	1	Operations	operation	NNS
33912	244	2	ceased	cease	VBD
33912	244	3	from	from	IN
33912	244	4	1861	1861	CD
33912	244	5	to	to	IN
33912	244	6	1863	1863	CD
33912	244	7	because	because	IN
33912	244	8	of	of	IN
33912	244	9	difficult	difficult	JJ
33912	244	10	wartime	wartime	JJ
33912	244	11	conditions	condition	NNS
33912	244	12	in	in	IN
33912	244	13	the	the	DT
33912	244	14	border	border	NN
33912	244	15	city	city	NN
33912	244	16	of	of	IN
33912	244	17	Baltimore	Baltimore	NNP
33912	244	18	.	.	.
33912	245	1	Following	follow	VBG
33912	245	2	this	this	DT
33912	245	3	,	,	,
33912	245	4	Bollman	Bollman	NNP
33912	245	5	reentered	reentere	VBD
33912	245	6	business	business	NN
33912	245	7	as	as	IN
33912	245	8	sole	sole	JJ
33912	245	9	proprietor	proprietor	NN
33912	245	10	of	of	IN
33912	245	11	the	the	DT
33912	245	12	Patapsco	Patapsco	NNP
33912	245	13	Bridge	Bridge	NNP
33912	245	14	and	and	CC
33912	245	15	Iron	Iron	NNP
33912	245	16	Works	Works	NNP
33912	245	17	.	.	.
33912	246	1	[	[	-LRB-
33912	246	2	Illustration	illustration	NN
33912	246	3	:	:	:
33912	246	4	QUINCY	QUINCY	VBN
33912	246	5	BAY	BAY	NNP
33912	246	6	BRIDGE	BRIDGE	NNP
33912	246	7	Figure	figure	NN
33912	246	8	17.--CHICAGO	17.--chicago	CD
33912	246	9	,	,	,
33912	246	10	BURLINGTON	BURLINGTON	NNP
33912	246	11	AND	and	CC
33912	246	12	QUINCY	QUINCY	VBN
33912	246	13	RAILROAD	RAILROAD	VBN
33912	246	14	BRIDGE	bridge	NN
33912	246	15	over	over	IN
33912	246	16	Quincy	Quincy	NNP
33912	246	17	Bay	Bay	NNP
33912	246	18	(	(	-LRB-
33912	246	19	branch	branch	NN
33912	246	20	of	of	IN
33912	246	21	the	the	DT
33912	246	22	Mississippi	Mississippi	NNP
33912	246	23	River	River	NNP
33912	246	24	)	)	-RRB-
33912	246	25	at	at	IN
33912	246	26	Quincy	Quincy	NNP
33912	246	27	,	,	,
33912	246	28	Illinois	Illinois	NNP
33912	246	29	.	.	.
33912	247	1	The	the	DT
33912	247	2	pivot	pivot	NN
33912	247	3	draw	draw	NN
33912	247	4	-	-	HYPH
33912	247	5	span	span	NN
33912	247	6	was	be	VBD
33912	247	7	formed	form	VBN
33912	247	8	of	of	IN
33912	247	9	two	two	CD
33912	247	10	Bollman	Bollman	NNP
33912	247	11	deck	deck	NN
33912	247	12	trusses	truss	NNS
33912	247	13	supported	support	VBN
33912	247	14	at	at	IN
33912	247	15	their	-PRON-	PRP$
33912	247	16	outer	outer	JJ
33912	247	17	ends	end	NNS
33912	247	18	by	by	IN
33912	247	19	hog	hog	NN
33912	247	20	chains	chain	NNS
33912	247	21	.	.	.
33912	248	1	The	the	DT
33912	248	2	bridge	bridge	NN
33912	248	3	was	be	VBD
33912	248	4	built	build	VBN
33912	248	5	in	in	IN
33912	248	6	1867	1867	CD
33912	248	7	-	-	SYM
33912	248	8	1868	1868	CD
33912	248	9	by	by	IN
33912	248	10	the	the	DT
33912	248	11	Detroit	Detroit	NNP
33912	248	12	Bridge	Bridge	NNP
33912	248	13	and	and	CC
33912	248	14	Iron	Iron	NNP
33912	248	15	Co.	Co.	NNP
33912	248	16	,	,	,
33912	248	17	Bollman	Bollman	NNP
33912	248	18	licensee	licensee	NN
33912	248	19	.	.	.
33912	249	1	(	(	-LRB-
33912	249	2	Clarke	Clarke	NNP
33912	249	3	,	,	,
33912	249	4	_	_	NNP
33912	249	5	Account	Account	NNP
33912	249	6	of	of	IN
33912	249	7	the	the	DT
33912	249	8	Iron	Iron	NNP
33912	249	9	Railway	Railway	NNP
33912	249	10	Bridge	Bridge	NNP
33912	249	11	...	...	:
33912	249	12	at	at	IN
33912	249	13	Quincy	Quincy	NNP
33912	249	14	,	,	,
33912	249	15	Illinois	Illinois	NNP
33912	249	16	_	_	NNP
33912	249	17	.	.	.
33912	249	18	)	)	-RRB-
33912	249	19	]	]	-RRB-
33912	250	1	The	the	DT
33912	250	2	most	most	RBS
33912	250	3	noteworthy	noteworthy	JJ
33912	250	4	of	of	IN
33912	250	5	Bollman	Bollman	NNP
33912	250	6	's	's	POS
33912	250	7	works	work	NNS
33912	250	8	in	in	IN
33912	250	9	this	this	DT
33912	250	10	period	period	NN
33912	250	11	was	be	VBD
33912	250	12	a	a	DT
33912	250	13	series	series	NN
33912	250	14	of	of	IN
33912	250	15	spans	span	NNS
33912	250	16	at	at	IN
33912	250	17	Harpers	Harpers	NNP
33912	250	18	Ferry	Ferry	NNP
33912	250	19	.	.	.
33912	251	1	The	the	DT
33912	251	2	B.	B.	NNP
33912	252	1	&	&	CC
33912	252	2	O.	O.	NNP
33912	253	1	's	's	POS
33912	253	2	timber	timber	NNP
33912	253	3	bridge	bridge	NN
33912	253	4	had	have	VBD
33912	253	5	been	be	VBN
33912	253	6	destroyed	destroy	VBN
33912	253	7	by	by	IN
33912	253	8	Confederate	Confederate	NNP
33912	253	9	forces	force	NNS
33912	253	10	in	in	IN
33912	253	11	June	June	NNP
33912	253	12	1861	1861	CD
33912	253	13	,	,	,
33912	253	14	and	and	CC
33912	253	15	the	the	DT
33912	253	16	crossing	crossing	NN
33912	253	17	was	be	VBD
33912	253	18	thereafter	thereafter	RB
33912	253	19	made	make	VBN
33912	253	20	upon	upon	IN
33912	253	21	temporary	temporary	JJ
33912	253	22	trestlework	trestlework	NN
33912	253	23	.	.	.
33912	254	1	This	this	DT
33912	254	2	was	be	VBD
33912	254	3	a	a	DT
33912	254	4	constant	constant	JJ
33912	254	5	source	source	NN
33912	254	6	of	of	IN
33912	254	7	trouble	trouble	NN
33912	254	8	,	,	,
33912	254	9	with	with	IN
33912	254	10	continuing	continue	VBG
33912	254	11	interruptions	interruption	NNS
33912	254	12	of	of	IN
33912	254	13	the	the	DT
33912	254	14	connection	connection	NN
33912	254	15	from	from	IN
33912	254	16	high	high	JJ
33912	254	17	water	water	NN
33912	254	18	,	,	,
33912	254	19	washouts	washout	NNS
33912	254	20	,	,	,
33912	254	21	and	and	CC
33912	254	22	military	military	JJ
33912	254	23	actions	action	NNS
33912	254	24	.	.	.
33912	255	1	The	the	DT
33912	255	2	annoyance	annoyance	NN
33912	255	3	and	and	CC
33912	255	4	expense	expense	NN
33912	255	5	of	of	IN
33912	255	6	this	this	DT
33912	255	7	became	become	VBD
33912	255	8	so	so	RB
33912	255	9	great	great	JJ
33912	255	10	that	that	IN
33912	255	11	the	the	DT
33912	255	12	company	company	NN
33912	255	13	decided	decide	VBD
33912	255	14	to	to	TO
33912	255	15	risk	risk	VB
33912	255	16	an	an	DT
33912	255	17	iron	iron	NN
33912	255	18	bridge	bridge	NN
33912	255	19	at	at	IN
33912	255	20	the	the	DT
33912	255	21	crossing	crossing	NN
33912	255	22	.	.	.
33912	256	1	In	in	IN
33912	256	2	July	July	NNP
33912	256	3	and	and	CC
33912	256	4	August	August	NNP
33912	256	5	1862	1862	CD
33912	256	6	,	,	,
33912	256	7	two	two	CD
33912	256	8	sections	section	NNS
33912	256	9	of	of	IN
33912	256	10	Bollman	Bollman	NNP
33912	256	11	truss	truss	NN
33912	256	12	,	,	,
33912	256	13	spans	span	VBZ
33912	256	14	no	no	UH
33912	256	15	.	.	.
33912	257	1	4	4	CD
33912	257	2	and	and	CC
33912	257	3	no	no	UH
33912	257	4	.	.	.
33912	258	1	5	5	CD
33912	258	2	were	be	VBD
33912	258	3	completed	complete	VBN
33912	258	4	.	.	.
33912	259	1	As	as	IN
33912	259	2	this	this	DT
33912	259	3	occurred	occur	VBD
33912	259	4	during	during	IN
33912	259	5	the	the	DT
33912	259	6	time	time	NN
33912	259	7	when	when	WRB
33912	259	8	W.	W.	NNP
33912	259	9	Bollman	Bollman	NNP
33912	259	10	and	and	CC
33912	259	11	Company	Company	NNP
33912	259	12	was	be	VBD
33912	259	13	inoperative	inoperative	JJ
33912	259	14	,	,	,
33912	259	15	the	the	DT
33912	259	16	work	work	NN
33912	259	17	was	be	VBD
33912	259	18	produced	produce	VBN
33912	259	19	at	at	IN
33912	259	20	Mount	Mount	NNP
33912	259	21	Clair	Clair	NNP
33912	259	22	to	to	IN
33912	259	23	Bollman	Bollman	NNP
33912	259	24	's	's	POS
33912	259	25	design	design	NN
33912	259	26	and	and	CC
33912	259	27	,	,	,
33912	259	28	undoubtedly	undoubtedly	RB
33912	259	29	,	,	,
33912	259	30	erected	erect	VBN
33912	259	31	under	under	IN
33912	259	32	his	-PRON-	PRP$
33912	259	33	supervision	supervision	NN
33912	259	34	.	.	.
33912	260	1	Five	five	CD
33912	260	2	weeks	week	NNS
33912	260	3	later	later	RB
33912	260	4	,	,	,
33912	260	5	on	on	IN
33912	260	6	September	September	NNP
33912	260	7	24	24	CD
33912	260	8	,	,	,
33912	260	9	these	these	DT
33912	260	10	and	and	CC
33912	260	11	Bollman	Bollman	NNP
33912	260	12	's	's	POS
33912	260	13	famous	famous	JJ
33912	260	14	Winchester	Winchester	NNP
33912	260	15	span	span	NN
33912	260	16	of	of	IN
33912	260	17	1851	1851	CD
33912	260	18	were	be	VBD
33912	260	19	blown	blow	VBN
33912	260	20	up	up	RP
33912	260	21	by	by	IN
33912	260	22	the	the	DT
33912	260	23	Confederates	Confederates	NNPS
33912	260	24	,	,	,
33912	260	25	and	and	CC
33912	260	26	the	the	DT
33912	260	27	line	line	NN
33912	260	28	's	's	POS
33912	260	29	business	business	NN
33912	260	30	was	be	VBD
33912	260	31	again	again	RB
33912	260	32	placed	place	VBN
33912	260	33	at	at	IN
33912	260	34	the	the	DT
33912	260	35	mercy	mercy	NN
33912	260	36	of	of	IN
33912	260	37	trestling	trestle	VBG
33912	260	38	.	.	.
33912	261	1	The	the	DT
33912	261	2	spirit	spirit	NN
33912	261	3	of	of	IN
33912	261	4	the	the	DT
33912	261	5	B.	B.	NNP
33912	262	1	&	&	CC
33912	262	2	O.	O.	NNP
33912	262	3	administration	administration	NN
33912	262	4	indeed	indeed	RB
33912	262	5	seems	seem	VBZ
33912	262	6	to	to	TO
33912	262	7	have	have	VB
33912	262	8	been	be	VBN
33912	262	9	unshakable	unshakable	JJ
33912	262	10	when	when	WRB
33912	262	11	,	,	,
33912	262	12	in	in	IN
33912	262	13	the	the	DT
33912	262	14	face	face	NN
33912	262	15	of	of	IN
33912	262	16	such	such	JJ
33912	262	17	heartbreaking	heartbreaking	JJ
33912	262	18	setbacks	setback	NNS
33912	262	19	,	,	,
33912	262	20	it	-PRON-	PRP
33912	262	21	determined	determine	VBD
33912	262	22	to	to	TO
33912	262	23	again	again	RB
33912	262	24	bridge	bridge	VB
33912	262	25	the	the	DT
33912	262	26	river	river	NN
33912	262	27	with	with	IN
33912	262	28	iron	iron	NN
33912	262	29	,	,	,
33912	262	30	even	even	RB
33912	262	31	at	at	IN
33912	262	32	the	the	DT
33912	262	33	height	height	NN
33912	262	34	of	of	IN
33912	262	35	the	the	DT
33912	262	36	hostilities	hostility	NNS
33912	262	37	.	.	.
33912	263	1	In	in	IN
33912	263	2	November	November	NNP
33912	263	3	,	,	,
33912	263	4	span	span	VB
33912	263	5	no	no	UH
33912	263	6	.	.	.
33912	264	1	5	5	CD
33912	264	2	was	be	VBD
33912	264	3	erected	erect	VBN
33912	264	4	,	,	,
33912	264	5	and	and	CC
33912	264	6	by	by	IN
33912	264	7	April	April	NNP
33912	264	8	1863	1863	CD
33912	264	9	nos	nos	RB
33912	264	10	.	.	.
33912	265	1	3	3	CD
33912	265	2	,	,	,
33912	265	3	4	4	CD
33912	265	4	,	,	,
33912	265	5	and	and	CC
33912	265	6	6	6	CD
33912	265	7	also	also	RB
33912	265	8	.	.	.
33912	266	1	These	these	DT
33912	266	2	were	be	VBD
33912	266	3	the	the	DT
33912	266	4	four	four	CD
33912	266	5	straight	straight	JJ
33912	266	6	spans	span	NNS
33912	266	7	in	in	IN
33912	266	8	midriver	midriver	NN
33912	266	9	between	between	IN
33912	266	10	the	the	DT
33912	266	11	"	"	``
33912	266	12	wide	wide	JJ
33912	266	13	"	"	''
33912	266	14	(	(	-LRB-
33912	266	15	or	or	CC
33912	266	16	"	"	``
33912	266	17	branch	branch	NN
33912	266	18	,	,	,
33912	266	19	"	"	''
33912	266	20	or	or	CC
33912	266	21	"	"	``
33912	266	22	wye	wye	WRB
33912	266	23	"	"	''
33912	266	24	)	)	-RRB-
33912	266	25	span	span	NN
33912	266	26	and	and	CC
33912	266	27	the	the	DT
33912	266	28	span	span	NN
33912	266	29	on	on	IN
33912	266	30	the	the	DT
33912	266	31	Maryland	Maryland	NNP
33912	266	32	shore	shore	NN
33912	266	33	over	over	RP
33912	266	34	the	the	DT
33912	266	35	Chesapeake	Chesapeake	NNP
33912	266	36	and	and	CC
33912	266	37	Ohio	Ohio	NNP
33912	266	38	Canal	Canal	NNP
33912	266	39	(	(	-LRB-
33912	266	40	see	see	VBP
33912	266	41	fig	fig	NN
33912	266	42	.	.	.
33912	267	1	13	13	CD
33912	267	2	)	)	-RRB-
33912	267	3	.	.	.
33912	268	1	Although	although	IN
33912	268	2	the	the	DT
33912	268	3	wood	wood	NN
33912	268	4	floor	floor	NN
33912	268	5	system	system	NN
33912	268	6	of	of	IN
33912	268	7	these	these	DT
33912	268	8	spans	span	NNS
33912	268	9	was	be	VBD
33912	268	10	burned	burn	VBN
33912	268	11	for	for	IN
33912	268	12	strategic	strategic	JJ
33912	268	13	reasons	reason	NNS
33912	268	14	by	by	IN
33912	268	15	U.S.	U.S.	NNP
33912	268	16	troops	troop	NNS
33912	268	17	later	later	RB
33912	268	18	in	in	IN
33912	268	19	1863	1863	CD
33912	268	20	,	,	,
33912	268	21	they	-PRON-	PRP
33912	268	22	survived	survive	VBD
33912	268	23	the	the	DT
33912	268	24	war	war	NN
33912	268	25	.	.	.
33912	269	1	In	in	IN
33912	269	2	1868	1868	CD
33912	269	3	the	the	DT
33912	269	4	remaining	remain	VBG
33912	269	5	trestlework	trestlework	NN
33912	269	6	was	be	VBD
33912	269	7	replaced	replace	VBN
33912	269	8	with	with	IN
33912	269	9	Bollman	Bollman	NNP
33912	269	10	trusses	truss	NNS
33912	269	11	.	.	.
33912	270	1	This	this	DT
33912	270	2	magnificent	magnificent	JJ
33912	270	3	structure	structure	NN
33912	270	4	served	serve	VBD
33912	270	5	the	the	DT
33912	270	6	railroad	railroad	NN
33912	270	7	until	until	IN
33912	270	8	1894	1894	CD
33912	270	9	when	when	WRB
33912	270	10	the	the	DT
33912	270	11	right	right	JJ
33912	270	12	-	-	HYPH
33912	270	13	of	of	IN
33912	270	14	-	-	HYPH
33912	270	15	way	way	NN
33912	270	16	was	be	VBD
33912	270	17	realigned	realign	VBN
33912	270	18	at	at	IN
33912	270	19	Harpers	Harpers	NNP
33912	270	20	Ferry	Ferry	NNP
33912	270	21	.	.	.
33912	271	1	However	however	RB
33912	271	2	,	,	,
33912	271	3	the	the	DT
33912	271	4	half	half	NN
33912	271	5	used	use	VBN
33912	271	6	by	by	IN
33912	271	7	the	the	DT
33912	271	8	common	common	JJ
33912	271	9	road	road	NN
33912	271	10	remained	remain	VBD
33912	271	11	in	in	IN
33912	271	12	use	use	NN
33912	271	13	until	until	IN
33912	271	14	carried	carry	VBN
33912	271	15	away	away	RB
33912	271	16	by	by	IN
33912	271	17	the	the	DT
33912	271	18	disastrous	disastrous	JJ
33912	271	19	flood	flood	NN
33912	271	20	in	in	IN
33912	271	21	1936	1936	CD
33912	271	22	.	.	.
33912	272	1	The	the	DT
33912	272	2	piers	pier	NNS
33912	272	3	may	may	MD
33912	272	4	still	still	RB
33912	272	5	be	be	VB
33912	272	6	seen	see	VBN
33912	272	7	.	.	.
33912	273	1	During	during	IN
33912	273	2	the	the	DT
33912	273	3	prewar	prewar	JJ
33912	273	4	years	year	NNS
33912	273	5	,	,	,
33912	273	6	Bollman	Bollman	NNP
33912	273	7	evolved	evolve	VBD
33912	273	8	a	a	DT
33912	273	9	structural	structural	JJ
33912	273	10	development	development	NN
33912	273	11	of	of	IN
33912	273	12	most	most	JJS
33912	273	13	profound	profound	JJ
33912	273	14	importance	importance	NN
33912	273	15	,	,	,
33912	273	16	which	which	WDT
33912	273	17	is	be	VBZ
33912	273	18	usually	usually	RB
33912	273	19	associated	associate	VBN
33912	273	20	with	with	IN
33912	273	21	the	the	DT
33912	273	22	Phoenix	Phoenix	NNP
33912	273	23	Iron	Iron	NNP
33912	273	24	Works	Works	NNP
33912	273	25	and	and	CC
33912	273	26	its	-PRON-	PRP$
33912	273	27	founder	founder	NN
33912	273	28	,	,	,
33912	273	29	Samuel	Samuel	NNP
33912	273	30	J.	J.	NNP
33912	273	31	Reeves	Reeves	NNP
33912	273	32	.	.	.
33912	274	1	In	in	IN
33912	274	2	the	the	DT
33912	274	3	erection	erection	NN
33912	274	4	of	of	IN
33912	274	5	a	a	DT
33912	274	6	high	high	JJ
33912	274	7	trestlework	trestlework	NN
33912	274	8	viaduct	viaduct	NN
33912	274	9	for	for	IN
33912	274	10	the	the	DT
33912	274	11	Havana	Havana	NNP
33912	274	12	Railroad	Railroad	NNP
33912	274	13	,	,	,
33912	274	14	Bollman	Bollman	NNP
33912	274	15	apparently	apparently	RB
33912	274	16	became	become	VBD
33912	274	17	concerned	concerned	JJ
33912	274	18	with	with	IN
33912	274	19	the	the	DT
33912	274	20	tensile	tensile	JJ
33912	274	21	weakness	weakness	NN
33912	274	22	of	of	IN
33912	274	23	cast	cast	NN
33912	274	24	iron	iron	NN
33912	274	25	when	when	WRB
33912	274	26	applied	apply	VBN
33912	274	27	in	in	IN
33912	274	28	long	long	JJ
33912	274	29	,	,	,
33912	274	30	unsupported	unsupported	JJ
33912	274	31	columns	column	NNS
33912	274	32	.	.	.
33912	275	1	Although	although	IN
33912	275	2	a	a	DT
33912	275	3	column	column	NN
33912	275	4	is	be	VBZ
33912	275	5	normally	normally	RB
33912	275	6	subjected	subject	VBN
33912	275	7	to	to	IN
33912	275	8	compressive	compressive	JJ
33912	275	9	stresses	stress	NNS
33912	275	10	,	,	,
33912	275	11	when	when	WRB
33912	275	12	the	the	DT
33912	275	13	slenderness	slenderness	NN
33912	275	14	ratio	ratio	NN
33912	275	15	--	--	:
33912	275	16	that	that	RB
33912	275	17	is	is	RB
33912	275	18	,	,	,
33912	275	19	the	the	DT
33912	275	20	length	length	NN
33912	275	21	divided	divide	VBN
33912	275	22	by	by	IN
33912	275	23	the	the	DT
33912	275	24	radius	radius	NN
33912	275	25	of	of	IN
33912	275	26	gyration	gyration	NN
33912	275	27	of	of	IN
33912	275	28	the	the	DT
33912	275	29	cross	cross	NN
33912	275	30	section	section	NN
33912	275	31	--	--	:
33912	275	32	becomes	become	VBZ
33912	275	33	great	great	JJ
33912	275	34	,	,	,
33912	275	35	a	a	DT
33912	275	36	secondary	secondary	JJ
33912	275	37	bending	bend	VBG
33912	275	38	stress	stress	NN
33912	275	39	may	may	MD
33912	275	40	be	be	VB
33912	275	41	produced	produce	VBN
33912	275	42	.	.	.
33912	276	1	If	if	IN
33912	276	2	this	this	DT
33912	276	3	stress	stress	NN
33912	276	4	becomes	become	VBZ
33912	276	5	great	great	JJ
33912	276	6	enough	enough	RB
33912	276	7	,	,	,
33912	276	8	the	the	DT
33912	276	9	value	value	NN
33912	276	10	of	of	IN
33912	276	11	the	the	DT
33912	276	12	tensile	tensile	JJ
33912	276	13	stress	stress	NN
33912	276	14	in	in	IN
33912	276	15	one	one	CD
33912	276	16	side	side	NN
33912	276	17	of	of	IN
33912	276	18	the	the	DT
33912	276	19	column	column	NN
33912	276	20	may	may	MD
33912	276	21	actually	actually	RB
33912	276	22	exceed	exceed	VB
33912	276	23	the	the	DT
33912	276	24	principal	principal	JJ
33912	276	25	compressive	compressive	JJ
33912	276	26	stress	stress	NN
33912	276	27	,	,	,
33912	276	28	and	and	CC
33912	276	29	a	a	DT
33912	276	30	net	net	JJ
33912	276	31	effect	effect	NN
33912	276	32	of	of	IN
33912	276	33	tension	tension	NN
33912	276	34	result	result	NN
33912	276	35	.	.	.
33912	277	1	[	[	-LRB-
33912	277	2	Illustration	illustration	NN
33912	277	3	:	:	:
33912	277	4	Figure	figure	VB
33912	277	5	18.--OHIO	18.--ohio	CD
33912	277	6	RIVER	river	NN
33912	277	7	CROSSING	CROSSING	NNPS
33912	277	8	of	of	IN
33912	277	9	the	the	DT
33912	277	10	Baltimore	Baltimore	NNP
33912	277	11	and	and	CC
33912	277	12	Ohio	Ohio	NNP
33912	277	13	at	at	IN
33912	277	14	Benwood	Benwood	NNP
33912	277	15	,	,	,
33912	277	16	West	West	NNP
33912	277	17	Virginia	Virginia	NNP
33912	277	18	,	,	,
33912	277	19	completed	complete	VBN
33912	277	20	in	in	IN
33912	277	21	1870	1870	CD
33912	277	22	.	.	.
33912	278	1	Bollman	bollman	JJ
33912	278	2	deck	deck	NN
33912	278	3	trusses	truss	NNS
33912	278	4	were	be	VBD
33912	278	5	used	use	VBN
33912	278	6	in	in	IN
33912	278	7	the	the	DT
33912	278	8	approaches	approach	NNS
33912	278	9	on	on	IN
33912	278	10	both	both	DT
33912	278	11	sides	side	NNS
33912	278	12	.	.	.
33912	279	1	(	(	-LRB-
33912	279	2	Photo	photo	NN
33912	279	3	693	693	CD
33912	279	4	,	,	,
33912	279	5	Baltimore	Baltimore	NNP
33912	279	6	and	and	CC
33912	279	7	Ohio	Ohio	NNP
33912	279	8	Collection	Collection	NNP
33912	279	9	,	,	,
33912	279	10	Museum	Museum	NNP
33912	279	11	of	of	IN
33912	279	12	History	History	NNP
33912	279	13	and	and	CC
33912	279	14	Technology	Technology	NNP
33912	279	15	.	.	.
33912	279	16	)	)	-RRB-
33912	279	17	]	]	-RRB-
33912	280	1	[	[	-LRB-
33912	280	2	Illustration	illustration	NN
33912	280	3	:	:	:
33912	280	4	Figure	figure	NN
33912	280	5	19.--PATAPSCO	19.--patapsco	CD
33912	280	6	RIVER	river	NN
33912	280	7	crossing	crossing	NN
33912	280	8	of	of	IN
33912	280	9	the	the	DT
33912	280	10	Baltimore	Baltimore	NNP
33912	280	11	and	and	CC
33912	280	12	Ohio	Ohio	NNP
33912	280	13	between	between	IN
33912	280	14	Thistle	Thistle	NNP
33912	280	15	and	and	CC
33912	280	16	Ilchester	Ilchester	NNP
33912	280	17	,	,	,
33912	280	18	Maryland	Maryland	NNP
33912	280	19	.	.	.
33912	281	1	(	(	-LRB-
33912	281	2	Photo	photo	NN
33912	281	3	695	695	CD
33912	281	4	,	,	,
33912	281	5	Baltimore	Baltimore	NNP
33912	281	6	and	and	CC
33912	281	7	Ohio	Ohio	NNP
33912	281	8	Collection	Collection	NNP
33912	281	9	,	,	,
33912	281	10	Museum	Museum	NNP
33912	281	11	of	of	IN
33912	281	12	History	History	NNP
33912	281	13	and	and	CC
33912	281	14	Technology	Technology	NNP
33912	281	15	.	.	.
33912	281	16	)	)	-RRB-
33912	281	17	]	]	-RRB-
33912	282	1	As	as	IN
33912	282	2	already	already	RB
33912	282	3	mentioned	mention	VBN
33912	282	4	,	,	,
33912	282	5	the	the	DT
33912	282	6	few	few	JJ
33912	282	7	available	available	JJ
33912	282	8	rolled	roll	VBN
33912	282	9	-	-	HYPH
33912	282	10	iron	iron	NN
33912	282	11	shapes	shape	NNS
33912	282	12	were	be	VBD
33912	282	13	of	of	IN
33912	282	14	relatively	relatively	RB
33912	282	15	small	small	JJ
33912	282	16	area	area	NN
33912	282	17	and	and	CC
33912	282	18	quite	quite	RB
33912	282	19	unsuitable	unsuitable	JJ
33912	282	20	for	for	IN
33912	282	21	use	use	NN
33912	282	22	as	as	IN
33912	282	23	columns	column	NNS
33912	282	24	unless	unless	IN
33912	282	25	combined	combine	VBN
33912	282	26	and	and	CC
33912	282	27	built	build	VBN
33912	282	28	up	up	RP
33912	282	29	in	in	IN
33912	282	30	complex	complex	JJ
33912	282	31	fabrications	fabrication	NNS
33912	282	32	.	.	.
33912	283	1	The	the	DT
33912	283	2	normal	normal	JJ
33912	283	3	practice	practice	NN
33912	283	4	at	at	IN
33912	283	5	the	the	DT
33912	283	6	time	time	NN
33912	283	7	was	be	VBD
33912	283	8	to	to	TO
33912	283	9	use	use	VB
33912	283	10	cast	cast	NN
33912	283	11	compression	compression	NN
33912	283	12	members	member	NNS
33912	283	13	in	in	IN
33912	283	14	iron	iron	NN
33912	283	15	bridges	bridge	NNS
33912	283	16	and	and	CC
33912	283	17	structures	structure	NNS
33912	283	18	,	,	,
33912	283	19	with	with	IN
33912	283	20	their	-PRON-	PRP$
33912	283	21	sectional	sectional	JJ
33912	283	22	area	area	NN
33912	283	23	so	so	RB
33912	283	24	proportioned	proportion	VBD
33912	283	25	to	to	IN
33912	283	26	the	the	DT
33912	283	27	length	length	NN
33912	283	28	that	that	WDT
33912	283	29	a	a	DT
33912	283	30	state	state	NN
33912	283	31	of	of	IN
33912	283	32	tension	tension	NN
33912	283	33	could	could	MD
33912	283	34	not	not	RB
33912	283	35	exist	exist	VB
33912	283	36	.	.	.
33912	284	1	In	in	IN
33912	284	2	the	the	DT
33912	284	3	case	case	NN
33912	284	4	of	of	IN
33912	284	5	long	long	JJ
33912	284	6	members	member	NNS
33912	284	7	,	,	,
33912	284	8	this	this	DT
33912	284	9	naturally	naturally	RB
33912	284	10	meant	mean	VBD
33912	284	11	that	that	IN
33912	284	12	an	an	DT
33912	284	13	excessive	excessive	JJ
33912	284	14	amount	amount	NN
33912	284	15	of	of	IN
33912	284	16	material	material	NN
33912	284	17	was	be	VBD
33912	284	18	used	use	VBN
33912	284	19	.	.	.
33912	285	1	[	[	-LRB-
33912	285	2	Illustration	illustration	NN
33912	285	3	:	:	:
33912	285	4	Figure	figure	NN
33912	285	5	20.--TWO	20.--two	CD
33912	285	6	VIEWS	view	NNS
33912	285	7	OF	of	IN
33912	285	8	BOLLMAN	BOLLMAN	NNP
33912	285	9	-	-	HYPH
33912	285	10	BUILT	build	VBN
33912	285	11	"	"	''
33912	285	12	water	water	NN
33912	285	13	-	-	HYPH
33912	285	14	pipe	pipe	NN
33912	285	15	truss	truss	NN
33912	285	16	"	"	''
33912	285	17	that	that	WDT
33912	285	18	carries	carry	VBZ
33912	285	19	Lombard	Lombard	NNP
33912	285	20	Street	Street	NNP
33912	285	21	over	over	IN
33912	285	22	Jones	Jones	NNP
33912	285	23	Falls	Falls	NNP
33912	285	24	in	in	IN
33912	285	25	Baltimore	Baltimore	NNP
33912	285	26	.	.	.
33912	286	1	Built	build	VBN
33912	286	2	in	in	IN
33912	286	3	1877	1877	CD
33912	286	4	.	.	.
33912	286	5	]	]	-RRB-
33912	287	1	Bollman	Bollman	NNP
33912	287	2	was	be	VBD
33912	287	3	conscious	conscious	JJ
33912	287	4	of	of	IN
33912	287	5	the	the	DT
33912	287	6	problem	problem	NN
33912	287	7	from	from	IN
33912	287	8	his	-PRON-	PRP$
33912	287	9	experience	experience	NN
33912	287	10	with	with	IN
33912	287	11	the	the	DT
33912	287	12	stretchers	stretcher	NNS
33912	287	13	and	and	CC
33912	287	14	struts	strut	NNS
33912	287	15	of	of	IN
33912	287	16	his	-PRON-	PRP$
33912	287	17	truss	truss	NN
33912	287	18	,	,	,
33912	287	19	and	and	CC
33912	287	20	he	-PRON-	PRP
33912	287	21	must	must	MD
33912	287	22	have	have	VB
33912	287	23	been	be	VBN
33912	287	24	aware	aware	JJ
33912	287	25	of	of	IN
33912	287	26	the	the	DT
33912	287	27	great	great	JJ
33912	287	28	advantage	advantage	NN
33912	287	29	which	which	WDT
33912	287	30	would	would	MD
33912	287	31	be	be	VB
33912	287	32	obtained	obtain	VBN
33912	287	33	by	by	IN
33912	287	34	a	a	DT
33912	287	35	practical	practical	JJ
33912	287	36	method	method	NN
33912	287	37	of	of	IN
33912	287	38	forming	form	VBG
33912	287	39	such	such	JJ
33912	287	40	members	member	NNS
33912	287	41	in	in	IN
33912	287	42	wrought	wrought	NN
33912	287	43	iron	iron	NN
33912	287	44	,	,	,
33912	287	45	the	the	DT
33912	287	46	tensile	tensile	JJ
33912	287	47	resistance	resistance	NN
33912	287	48	of	of	IN
33912	287	49	which	which	WDT
33912	287	50	is	be	VBZ
33912	287	51	equivalent	equivalent	JJ
33912	287	52	to	to	IN
33912	287	53	the	the	DT
33912	287	54	compressive	compressive	JJ
33912	287	55	.	.	.
33912	288	1	He	-PRON-	PRP
33912	288	2	eventually	eventually	RB
33912	288	3	developed	develop	VBD
33912	288	4	the	the	DT
33912	288	5	forerunner	forerunner	NN
33912	288	6	of	of	IN
33912	288	7	what	what	WP
33912	288	8	came	come	VBD
33912	288	9	to	to	TO
33912	288	10	be	be	VB
33912	288	11	known	know	VBN
33912	288	12	as	as	IN
33912	288	13	the	the	DT
33912	288	14	Phoenix	Phoenix	NNP
33912	288	15	form	form	NN
33912	288	16	by	by	IN
33912	288	17	having	have	VBG
33912	288	18	special	special	JJ
33912	288	19	segmental	segmental	JJ
33912	288	20	wrought	wrought	NN
33912	288	21	-	-	HYPH
33912	288	22	iron	iron	NN
33912	288	23	shapes	shape	NNS
33912	288	24	rolled	roll	VBN
33912	288	25	by	by	IN
33912	288	26	Morris	Morris	NNP
33912	288	27	,	,	,
33912	288	28	Tasker	Tasker	NNP
33912	288	29	and	and	CC
33912	288	30	Company	Company	NNP
33912	288	31	of	of	IN
33912	288	32	Philadelphia	Philadelphia	NNP
33912	288	33	,	,	,
33912	288	34	these	these	DT
33912	288	35	shapes	shape	NNS
33912	288	36	being	be	VBG
33912	288	37	combined	combine	VBN
33912	288	38	into	into	IN
33912	288	39	a	a	DT
33912	288	40	circular	circular	JJ
33912	288	41	section	section	NN
33912	288	42	with	with	IN
33912	288	43	outstanding	outstanding	JJ
33912	288	44	flanges	flange	NNS
33912	288	45	for	for	IN
33912	288	46	riveting	rivet	VBG
33912	288	47	together	together	RB
33912	288	48	.	.	.
33912	289	1	The	the	DT
33912	289	2	circular	circular	JJ
33912	289	3	section	section	NN
33912	289	4	is	be	VBZ
33912	289	5	theoretically	theoretically	RB
33912	289	6	the	the	DT
33912	289	7	most	most	RBS
33912	289	8	efficient	efficient	JJ
33912	289	9	to	to	TO
33912	289	10	bear	bear	VB
33912	289	11	compressive	compressive	JJ
33912	289	12	loading	loading	NN
33912	289	13	.	.	.
33912	290	1	A	a	DT
33912	290	2	column	column	NN
33912	290	3	of	of	IN
33912	290	4	any	any	DT
33912	290	5	required	require	VBN
33912	290	6	diameter	diameter	NN
33912	290	7	could	could	MD
33912	290	8	be	be	VB
33912	290	9	produced	produce	VBN
33912	290	10	by	by	IN
33912	290	11	simply	simply	RB
33912	290	12	increasing	increase	VBG
33912	290	13	the	the	DT
33912	290	14	number	number	NN
33912	290	15	of	of	IN
33912	290	16	segments	segment	NNS
33912	290	17	,	,	,
33912	290	18	the	the	DT
33912	290	19	individual	individual	JJ
33912	290	20	size	size	NN
33912	290	21	of	of	IN
33912	290	22	which	which	WDT
33912	290	23	never	never	RB
33912	290	24	exceeded	exceed	VBD
33912	290	25	contemporary	contemporary	JJ
33912	290	26	rolling	rolling	NN
33912	290	27	mill	mill	NN
33912	290	28	capacity	capacity	NN
33912	290	29	(	(	-LRB-
33912	290	30	see	see	VB
33912	290	31	fig	fig	NN
33912	290	32	.	.	.
33912	291	1	16	16	CD
33912	291	2	)	)	-RRB-
33912	291	3	.	.	.
33912	292	1	The	the	DT
33912	292	2	design	design	NN
33912	292	3	exhibits	exhibit	VBZ
33912	292	4	the	the	DT
33912	292	5	inspired	inspire	VBN
33912	292	6	combination	combination	NN
33912	292	7	of	of	IN
33912	292	8	functional	functional	JJ
33912	292	9	perfection	perfection	NN
33912	292	10	and	and	CC
33912	292	11	simplicity	simplicity	NN
33912	292	12	that	that	WDT
33912	292	13	seems	seem	VBZ
33912	292	14	to	to	TO
33912	292	15	characterize	characterize	VB
33912	292	16	most	most	JJS
33912	292	17	great	great	JJ
33912	292	18	inventions	invention	NNS
33912	292	19	.	.	.
33912	293	1	[	[	-LRB-
33912	293	2	Illustration	illustration	NN
33912	293	3	:	:	:
33912	293	4	Figure	figure	NN
33912	293	5	21.--THE	21.--the	CD
33912	293	6	HARPERS	HARPERS	NNP
33912	293	7	FERRY	FERRY	NNP
33912	293	8	BRIDGE	BRIDGE	NNP
33912	293	9	toward	toward	IN
33912	293	10	the	the	DT
33912	293	11	end	end	NN
33912	293	12	of	of	IN
33912	293	13	its	-PRON-	PRP$
33912	293	14	career	career	NN
33912	293	15	,	,	,
33912	293	16	carrying	carry	VBG
33912	293	17	a	a	DT
33912	293	18	common	common	JJ
33912	293	19	road	road	NN
33912	293	20	over	over	IN
33912	293	21	the	the	DT
33912	293	22	Potomac	Potomac	NNP
33912	293	23	.	.	.
33912	294	1	The	the	DT
33912	294	2	westernmost	westernmost	NN
33912	294	3	line	line	NN
33912	294	4	of	of	IN
33912	294	5	trussing	truss	VBG
33912	294	6	and	and	CC
33912	294	7	span	span	VBP
33912	294	8	no	no	UH
33912	294	9	.	.	.
33912	295	1	1	1	CD
33912	295	2	had	have	VBD
33912	295	3	been	be	VBN
33912	295	4	removed	remove	VBN
33912	295	5	long	long	RB
33912	295	6	before	before	RB
33912	295	7	.	.	.
33912	296	1	View	view	VB
33912	296	2	through	through	IN
33912	296	3	the	the	DT
33912	296	4	Winchester	Winchester	NNP
33912	296	5	span	span	NN
33912	296	6	looking	look	VBG
33912	296	7	toward	toward	IN
33912	296	8	Maryland	Maryland	NNP
33912	296	9	in	in	IN
33912	296	10	1933	1933	CD
33912	296	11	.	.	.
33912	297	1	(	(	-LRB-
33912	297	2	_	_	NNP
33912	297	3	Photo	Photo	NNP
33912	297	4	courtesy	courtesy	NN
33912	297	5	of	of	IN
33912	297	6	Harpers	Harpers	NNP
33912	297	7	Ferry	Ferry	NNP
33912	297	8	National	National	NNP
33912	297	9	Historical	Historical	NNP
33912	297	10	Park	Park	NNP
33912	297	11	.	.	.
33912	297	12	_	_	NNP
33912	297	13	)	)	-RRB-
33912	297	14	]	]	-RRB-
33912	297	15	It	-PRON-	PRP
33912	297	16	may	may	MD
33912	297	17	have	have	VB
33912	297	18	been	be	VBN
33912	297	19	because	because	IN
33912	297	20	he	-PRON-	PRP
33912	297	21	had	have	VBD
33912	297	22	no	no	DT
33912	297	23	facilities	facility	NNS
33912	297	24	for	for	IN
33912	297	25	rolling	roll	VBG
33912	297	26	that	that	WDT
33912	297	27	Bollman	Bollman	NNP
33912	297	28	communicated	communicate	VBD
33912	297	29	his	-PRON-	PRP$
33912	297	30	idea	idea	NN
33912	297	31	to	to	IN
33912	297	32	Reeves	Reeves	NNP
33912	297	33	,	,	,
33912	297	34	although	although	IN
33912	297	35	this	this	DT
33912	297	36	seems	seem	VBZ
33912	297	37	illogical	illogical	JJ
33912	297	38	.	.	.
33912	298	1	At	at	IN
33912	298	2	any	any	DT
33912	298	3	rate	rate	NN
33912	298	4	,	,	,
33912	298	5	Reeves	Reeves	NNP
33912	298	6	and	and	CC
33912	298	7	his	-PRON-	PRP$
33912	298	8	associates	associate	NNS
33912	298	9	patented	patent	VBD
33912	298	10	the	the	DT
33912	298	11	system	system	NN
33912	298	12	extensively	extensively	RB
33912	298	13	,	,	,
33912	298	14	and	and	CC
33912	298	15	the	the	DT
33912	298	16	Phoenix	Phoenix	NNP
33912	298	17	column	column	NN
33912	298	18	was	be	VBD
33912	298	19	eventually	eventually	RB
33912	298	20	employed	employ	VBN
33912	298	21	to	to	IN
33912	298	22	the	the	DT
33912	298	23	virtual	virtual	JJ
33912	298	24	exclusion	exclusion	NN
33912	298	25	of	of	IN
33912	298	26	cast	cast	NN
33912	298	27	-	-	HYPH
33912	298	28	iron	iron	NN
33912	298	29	and	and	CC
33912	298	30	other	other	JJ
33912	298	31	types	type	NNS
33912	298	32	of	of	IN
33912	298	33	wrought	wrought	NN
33912	298	34	-	-	HYPH
33912	298	35	iron	iron	NN
33912	298	36	columns	column	NNS
33912	298	37	.	.	.
33912	299	1	By	by	IN
33912	299	2	the	the	DT
33912	299	3	end	end	NN
33912	299	4	of	of	IN
33912	299	5	the	the	DT
33912	299	6	19th	19th	JJ
33912	299	7	century	century	NN
33912	299	8	it	-PRON-	PRP
33912	299	9	began	begin	VBD
33912	299	10	to	to	TO
33912	299	11	pass	pass	VB
33912	299	12	from	from	IN
33912	299	13	use	use	NN
33912	299	14	,	,	,
33912	299	15	as	as	IN
33912	299	16	mills	mill	NNS
33912	299	17	became	become	VBD
33912	299	18	capable	capable	JJ
33912	299	19	of	of	IN
33912	299	20	producing	produce	VBG
33912	299	21	larger	large	JJR
33912	299	22	sections	section	NNS
33912	299	23	with	with	IN
33912	299	24	properties	property	NNS
33912	299	25	relatively	relatively	RB
33912	299	26	favorable	favorable	JJ
33912	299	27	to	to	TO
33912	299	28	column	column	VB
33912	299	29	use	use	NN
33912	299	30	and	and	CC
33912	299	31	more	more	RBR
33912	299	32	adaptable	adaptable	JJ
33912	299	33	to	to	IN
33912	299	34	connection	connection	NN
33912	299	35	with	with	IN
33912	299	36	other	other	JJ
33912	299	37	members	member	NNS
33912	299	38	.	.	.
33912	300	1	Final	final	JJ
33912	300	2	Use	Use	NNP
33912	300	3	of	of	IN
33912	300	4	the	the	DT
33912	300	5	Bollman	Bollman	NNP
33912	300	6	Truss	Truss	NNP
33912	300	7	The	the	DT
33912	300	8	Bollman	Bollman	NNP
33912	300	9	truss	truss	NN
33912	300	10	found	find	VBD
33912	300	11	occasional	occasional	JJ
33912	300	12	use	use	NN
33912	300	13	elsewhere	elsewhere	RB
33912	300	14	than	than	IN
33912	300	15	on	on	IN
33912	300	16	the	the	DT
33912	300	17	B.	B.	NNP
33912	301	1	&	&	CC
33912	301	2	O.	O.	NNP
33912	301	3	lines	line	NNS
33912	301	4	,	,	,
33912	301	5	but	but	CC
33912	301	6	generally	generally	RB
33912	301	7	only	only	RB
33912	301	8	when	when	WRB
33912	301	9	erected	erect	VBN
33912	301	10	on	on	IN
33912	301	11	contract	contract	NN
33912	301	12	by	by	IN
33912	301	13	Patapsco	Patapsco	NNP
33912	301	14	Bridge	Bridge	NNP
33912	301	15	and	and	CC
33912	301	16	Iron	Iron	NNP
33912	301	17	Works	Works	NNP
33912	301	18	.	.	.
33912	302	1	However	however	RB
33912	302	2	,	,	,
33912	302	3	the	the	DT
33912	302	4	fact	fact	NN
33912	302	5	that	that	IN
33912	302	6	Bollman	Bollman	NNP
33912	302	7	could	could	MD
33912	302	8	profitably	profitably	RB
33912	302	9	erect	erect	VB
33912	302	10	this	this	DT
33912	302	11	bridge	bridge	NN
33912	302	12	in	in	IN
33912	302	13	the	the	DT
33912	302	14	severely	severely	RB
33912	302	15	competitive	competitive	JJ
33912	302	16	1870	1870	CD
33912	302	17	's	's	POS
33912	302	18	indicates	indicate	NNS
33912	302	19	that	that	IN
33912	302	20	the	the	DT
33912	302	21	harsh	harsh	JJ
33912	302	22	criticism	criticism	NN
33912	302	23	of	of	IN
33912	302	24	the	the	DT
33912	302	25	system	system	NN
33912	302	26	by	by	IN
33912	302	27	authorities	authority	NNS
33912	302	28	of	of	IN
33912	302	29	such	such	JJ
33912	302	30	stature	stature	NN
33912	302	31	as	as	IN
33912	302	32	Whipple	Whipple	NNP
33912	302	33	was	be	VBD
33912	302	34	not	not	RB
33912	302	35	necessarily	necessarily	RB
33912	302	36	justified	justify	VBN
33912	302	37	.	.	.
33912	303	1	Bollman	Bollman	NNP
33912	303	2	's	's	POS
33912	303	3	advertisements	advertisement	NNS
33912	303	4	,	,	,
33912	303	5	in	in	IN
33912	303	6	fact	fact	NN
33912	303	7	,	,	,
33912	303	8	refer	refer	VB
33912	303	9	to	to	IN
33912	303	10	the	the	DT
33912	303	11	favorable	favorable	JJ
33912	303	12	recommendations	recommendation	NNS
33912	303	13	of	of	IN
33912	303	14	other	other	JJ
33912	303	15	such	such	JJ
33912	303	16	renowned	renowned	JJ
33912	303	17	engineers	engineer	NNS
33912	303	18	as	as	IN
33912	303	19	Herman	Herman	NNP
33912	303	20	Haupt	Haupt	NNP
33912	303	21	and	and	CC
33912	303	22	M.	M.	NNP
33912	303	23	C.	C.	NNP
33912	303	24	Meigs	Meigs	NNP
33912	303	25	.	.	.
33912	304	1	[	[	-LRB-
33912	304	2	Illustration	illustration	NN
33912	304	3	:	:	:
33912	304	4	Figure	figure	NN
33912	304	5	22.--BOLLMAN	22.--bollman	CD
33912	304	6	DECK	deck	NN
33912	304	7	TRUSSES	truss	NNS
33912	304	8	in	in	IN
33912	304	9	the	the	DT
33912	304	10	North	North	NNP
33912	304	11	River	River	NNP
33912	304	12	Bridge	Bridge	NNP
33912	304	13	built	build	VBN
33912	304	14	in	in	IN
33912	304	15	1873	1873	CD
33912	304	16	at	at	IN
33912	304	17	Mount	Mount	NNP
33912	304	18	Crawford	Crawford	NNP
33912	304	19	,	,	,
33912	304	20	Virginia	Virginia	NNP
33912	304	21	,	,	,
33912	304	22	on	on	IN
33912	304	23	the	the	DT
33912	304	24	Valley	Valley	NNP
33912	304	25	Railroad	Railroad	NNP
33912	304	26	of	of	IN
33912	304	27	Virginia	Virginia	NNP
33912	304	28	(	(	-LRB-
33912	304	29	B.	B.	NNP
33912	305	1	&	&	CC
33912	305	2	O.	O.	NNP
33912	305	3	)	)	-RRB-
33912	305	4	.	.	.
33912	306	1	Each	each	DT
33912	306	2	end	end	NN
33912	306	3	span	span	NN
33912	306	4	is	be	VBZ
33912	306	5	98	98	CD
33912	306	6	ft	ft	NN
33912	306	7	.	.	NNP
33912	306	8	6	6	CD
33912	306	9	in	in	IN
33912	306	10	.	.	.
33912	307	1	;	;	:
33912	307	2	the	the	DT
33912	307	3	river	river	NN
33912	307	4	span	span	NN
33912	307	5	is	be	VBZ
33912	307	6	148	148	CD
33912	307	7	ft	ft	NN
33912	307	8	.	.	NNP
33912	307	9	9	9	CD
33912	307	10	in	in	IN
33912	307	11	.	.	.
33912	308	1	(	(	-LRB-
33912	308	2	Photo	Photo	NNP
33912	308	3	756	756	CD
33912	308	4	,	,	,
33912	308	5	Baltimore	Baltimore	NNP
33912	308	6	and	and	CC
33912	308	7	Ohio	Ohio	NNP
33912	308	8	Collection	Collection	NNP
33912	308	9	,	,	,
33912	308	10	Museum	Museum	NNP
33912	308	11	of	of	IN
33912	308	12	History	History	NNP
33912	308	13	and	and	CC
33912	308	14	Technology	Technology	NNP
33912	308	15	.	.	.
33912	308	16	)	)	-RRB-
33912	308	17	]	]	-RRB-
33912	309	1	An	an	DT
33912	309	2	interesting	interesting	JJ
33912	309	3	application	application	NN
33912	309	4	of	of	IN
33912	309	5	the	the	DT
33912	309	6	system	system	NN
33912	309	7	was	be	VBD
33912	309	8	in	in	IN
33912	309	9	a	a	DT
33912	309	10	drawbridge	drawbridge	NN
33912	309	11	,	,	,
33912	309	12	formed	form	VBN
33912	309	13	of	of	IN
33912	309	14	two	two	CD
33912	309	15	Bollman	Bollman	NNP
33912	309	16	deck	deck	NN
33912	309	17	spans	span	NNS
33912	309	18	,	,	,
33912	309	19	over	over	IN
33912	309	20	an	an	DT
33912	309	21	arm	arm	NN
33912	309	22	of	of	IN
33912	309	23	the	the	DT
33912	309	24	Mississippi	Mississippi	NNP
33912	309	25	at	at	IN
33912	309	26	Quincy	Quincy	NNP
33912	309	27	,	,	,
33912	309	28	Illinois	Illinois	NNP
33912	309	29	(	(	-LRB-
33912	309	30	see	see	UH
33912	309	31	fig	fig	NN
33912	309	32	.	.	.
33912	310	1	17	17	CD
33912	310	2	)	)	-RRB-
33912	310	3	.	.	.
33912	311	1	The	the	DT
33912	311	2	first	first	JJ
33912	311	3	iron	iron	NN
33912	311	4	bridge	bridge	NN
33912	311	5	in	in	IN
33912	311	6	Mexico	Mexico	NNP
33912	311	7	was	be	VBD
33912	311	8	erected	erect	VBN
33912	311	9	by	by	IN
33912	311	10	Bollman	Bollman	NNP
33912	311	11	over	over	IN
33912	311	12	the	the	DT
33912	311	13	Medellín	Medellín	NNP
33912	311	14	River	River	NNP
33912	311	15	about	about	IN
33912	311	16	1864	1864	CD
33912	311	17	.	.	.
33912	312	1	Another	another	DT
33912	312	2	work	work	NN
33912	312	3	of	of	IN
33912	312	4	this	this	DT
33912	312	5	period	period	NN
33912	312	6	,	,	,
33912	312	7	which	which	WDT
33912	312	8	attracted	attract	VBD
33912	312	9	considerable	considerable	JJ
33912	312	10	attention	attention	NN
33912	312	11	,	,	,
33912	312	12	was	be	VBD
33912	312	13	a	a	DT
33912	312	14	pair	pair	NN
33912	312	15	of	of	IN
33912	312	16	bridges	bridge	NNS
33912	312	17	that	that	WDT
33912	312	18	Bollman	Bollman	NNP
33912	312	19	erected	erect	VBD
33912	312	20	over	over	IN
33912	312	21	North	North	NNP
33912	312	22	Carolina	Carolina	NNP
33912	312	23	's	's	POS
33912	312	24	Cape	Cape	NNP
33912	312	25	Fear	Fear	NNP
33912	312	26	River	River	NNP
33912	312	27	in	in	IN
33912	312	28	1867	1867	CD
33912	312	29	-	-	SYM
33912	312	30	1868	1868	CD
33912	312	31	.	.	.
33912	313	1	These	these	DT
33912	313	2	bridges	bridge	NNS
33912	313	3	were	be	VBD
33912	313	4	notable	notable	JJ
33912	313	5	for	for	IN
33912	313	6	their	-PRON-	PRP$
33912	313	7	foundation	foundation	NN
33912	313	8	on	on	IN
33912	313	9	cast	cast	NN
33912	313	10	-	-	HYPH
33912	313	11	iron	iron	NN
33912	313	12	cylinders	cylinder	NNS
33912	313	13	,	,	,
33912	313	14	sunk	sink	VBN
33912	313	15	pneumatically	pneumatically	RB
33912	313	16	.	.	.
33912	314	1	This	this	DT
33912	314	2	was	be	VBD
33912	314	3	one	one	CD
33912	314	4	of	of	IN
33912	314	5	the	the	DT
33912	314	6	first	first	JJ
33912	314	7	instances	instance	NNS
33912	314	8	of	of	IN
33912	314	9	the	the	DT
33912	314	10	use	use	NN
33912	314	11	of	of	IN
33912	314	12	the	the	DT
33912	314	13	process	process	NN
33912	314	14	in	in	IN
33912	314	15	America	America	NNP
33912	314	16	,	,	,
33912	314	17	and	and	CC
33912	314	18	the	the	DT
33912	314	19	depth	depth	NN
33912	314	20	of	of	IN
33912	314	21	80	80	CD
33912	314	22	feet	foot	NNS
33912	314	23	below	below	IN
33912	314	24	the	the	DT
33912	314	25	water	water	NN
33912	314	26	surface	surface	NN
33912	314	27	reached	reach	VBN
33912	314	28	by	by	IN
33912	314	29	one	one	CD
33912	314	30	cylinder	cylinder	NN
33912	314	31	was	be	VBD
33912	314	32	considered	consider	VBN
33912	314	33	remarkable	remarkable	JJ
33912	314	34	for	for	IN
33912	314	35	years	year	NNS
33912	314	36	afterward	afterward	RB
33912	314	37	.	.	.
33912	315	1	In	in	IN
33912	315	2	the	the	DT
33912	315	3	last	last	JJ
33912	315	4	active	active	JJ
33912	315	5	decade	decade	NN
33912	315	6	or	or	CC
33912	315	7	so	so	RB
33912	315	8	of	of	IN
33912	315	9	his	-PRON-	PRP$
33912	315	10	career	career	NN
33912	315	11	,	,	,
33912	315	12	Bollman	Bollman	NNP
33912	315	13	produced	produce	VBD
33912	315	14	hundreds	hundred	NNS
33912	315	15	of	of	IN
33912	315	16	minor	minor	JJ
33912	315	17	bridges	bridge	NNS
33912	315	18	and	and	CC
33912	315	19	other	other	JJ
33912	315	20	structures	structure	NNS
33912	315	21	.	.	.
33912	316	1	In	in	IN
33912	316	2	1873	1873	CD
33912	316	3	he	-PRON-	PRP
33912	316	4	supplied	supply	VBD
33912	316	5	the	the	DT
33912	316	6	castings	casting	NNS
33912	316	7	for	for	IN
33912	316	8	the	the	DT
33912	316	9	splendid	splendid	JJ
33912	316	10	iron	iron	NN
33912	316	11	dome	dome	NN
33912	316	12	of	of	IN
33912	316	13	Baltimore	Baltimore	NNP
33912	316	14	's	's	POS
33912	316	15	City	City	NNP
33912	316	16	Hall	Hall	NNP
33912	316	17	and	and	CC
33912	316	18	erected	erect	VBD
33912	316	19	the	the	DT
33912	316	20	ingenious	ingenious	JJ
33912	316	21	water	water	NN
33912	316	22	-	-	HYPH
33912	316	23	main	main	JJ
33912	316	24	truss	truss	NN
33912	316	25	which	which	WDT
33912	316	26	carries	carry	VBZ
33912	316	27	Lombard	Lombard	NNP
33912	316	28	Street	Street	NNP
33912	316	29	over	over	IN
33912	316	30	Jones	Jones	NNP
33912	316	31	Falls	Falls	NNP
33912	316	32	in	in	IN
33912	316	33	that	that	DT
33912	316	34	city	city	NN
33912	316	35	.	.	.
33912	317	1	In	in	IN
33912	317	2	this	this	DT
33912	317	3	structure	structure	NN
33912	317	4	the	the	DT
33912	317	5	top	top	JJ
33912	317	6	and	and	CC
33912	317	7	bottom	bottom	JJ
33912	317	8	chords	chord	NNS
33912	317	9	of	of	IN
33912	317	10	the	the	DT
33912	317	11	central	central	JJ
33912	317	12	line	line	NN
33912	317	13	of	of	IN
33912	317	14	trussing	truss	VBG
33912	317	15	are	be	VBP
33912	317	16	cast	cast	VBN
33912	317	17	-	-	HYPH
33912	317	18	iron	iron	NN
33912	317	19	water	water	NN
33912	317	20	mains	main	NNS
33912	317	21	,	,	,
33912	317	22	bifurcated	bifurcate	VBN
33912	317	23	at	at	IN
33912	317	24	the	the	DT
33912	317	25	abutments	abutment	NNS
33912	317	26	,	,	,
33912	317	27	and	and	CC
33912	317	28	joined	join	VBN
33912	317	29	by	by	IN
33912	317	30	cast-	cast-	NN
33912	317	31	and	and	CC
33912	317	32	wrought	wrought	NN
33912	317	33	-	-	HYPH
33912	317	34	iron	iron	NN
33912	317	35	web	web	NN
33912	317	36	members	member	NNS
33912	317	37	(	(	-LRB-
33912	317	38	see	see	VB
33912	317	39	fig	fig	NN
33912	317	40	.	.	.
33912	318	1	20	20	CD
33912	318	2	)	)	-RRB-
33912	318	3	.	.	.
33912	319	1	In	in	IN
33912	319	2	the	the	DT
33912	319	3	mid	mid	JJ
33912	319	4	1870	1870	CD
33912	319	5	's	's	POS
33912	319	6	Bollman	Bollman	NNP
33912	319	7	saw	see	VBD
33912	319	8	his	-PRON-	PRP$
33912	319	9	truss	truss	NN
33912	319	10	pass	pass	VB
33912	319	11	into	into	IN
33912	319	12	obsolescence	obsolescence	NN
33912	319	13	.	.	.
33912	320	1	This	this	DT
33912	320	2	was	be	VBD
33912	320	3	due	due	JJ
33912	320	4	primarily	primarily	RB
33912	320	5	to	to	IN
33912	320	6	the	the	DT
33912	320	7	generally	generally	RB
33912	320	8	increasing	increase	VBG
33912	320	9	distrust	distrust	NN
33912	320	10	of	of	IN
33912	320	11	cast	cast	NN
33912	320	12	iron	iron	NN
33912	320	13	for	for	IN
33912	320	14	major	major	JJ
33912	320	15	structural	structural	JJ
33912	320	16	members	member	NNS
33912	320	17	due	due	JJ
33912	320	18	to	to	IN
33912	320	19	its	-PRON-	PRP$
33912	320	20	brittleness	brittleness	NN
33912	320	21	,	,	,
33912	320	22	but	but	CC
33912	320	23	advances	advance	NNS
33912	320	24	in	in	IN
33912	320	25	structural	structural	JJ
33912	320	26	theory	theory	NN
33912	320	27	,	,	,
33912	320	28	availability	availability	NN
33912	320	29	of	of	IN
33912	320	30	a	a	DT
33912	320	31	greater	great	JJR
33912	320	32	variety	variety	NN
33912	320	33	of	of	IN
33912	320	34	rolled	roll	VBN
33912	320	35	structural	structural	JJ
33912	320	36	shapes	shape	NNS
33912	320	37	,	,	,
33912	320	38	and	and	CC
33912	320	39	the	the	DT
33912	320	40	increasing	increase	VBG
33912	320	41	loading	loading	NN
33912	320	42	patterns	pattern	NNS
33912	320	43	of	of	IN
33912	320	44	the	the	DT
33912	320	45	period	period	NN
33912	320	46	all	all	DT
33912	320	47	contributed	contribute	VBD
33912	320	48	.	.	.
33912	321	1	[	[	-LRB-
33912	321	2	Illustration	illustration	NN
33912	321	3	:	:	:
33912	321	4	Figure	figure	NN
33912	321	5	23.--THE	23.--the	CD
33912	321	6	ONLY	only	RB
33912	321	7	SURVIVING	survive	VBG
33912	321	8	BOLLMAN	BOLLMAN	NNP
33912	321	9	TRUSS	TRUSS	NNP
33912	321	10	BRIDGE	BRIDGE	NNP
33912	321	11	,	,	,
33912	321	12	at	at	IN
33912	321	13	Savage	Savage	NNP
33912	321	14	,	,	,
33912	321	15	Maryland	Maryland	NNP
33912	321	16	.	.	.
33912	322	1	The	the	DT
33912	322	2	bridge	bridge	NN
33912	322	3	was	be	VBD
33912	322	4	built	build	VBN
33912	322	5	elsewhere	elsewhere	RB
33912	322	6	in	in	IN
33912	322	7	1852	1852	CD
33912	322	8	and	and	CC
33912	322	9	was	be	VBD
33912	322	10	moved	move	VBN
33912	322	11	to	to	IN
33912	322	12	this	this	DT
33912	322	13	now	now	RB
33912	322	14	-	-	HYPH
33912	322	15	abandoned	abandon	VBN
33912	322	16	Baltimore	Baltimore	NNP
33912	322	17	and	and	CC
33912	322	18	Ohio	Ohio	NNP
33912	322	19	industrial	industrial	JJ
33912	322	20	siding	siding	NN
33912	322	21	in	in	IN
33912	322	22	about	about	RB
33912	322	23	1888	1888	CD
33912	322	24	.	.	.
33912	322	25	]	]	-RRB-
33912	323	1	Although	although	IN
33912	323	2	no	no	DT
33912	323	3	Bollman	Bollman	NNP
33912	323	4	trusses	truss	NNS
33912	323	5	were	be	VBD
33912	323	6	built	build	VBN
33912	323	7	by	by	IN
33912	323	8	Bollman	Bollman	NNP
33912	323	9	or	or	CC
33912	323	10	the	the	DT
33912	323	11	B.	B.	NNP
33912	324	1	&	&	CC
33912	324	2	O.	O.	NNP
33912	324	3	after	after	IN
33912	324	4	1875	1875	CD
33912	324	5	,	,	,
33912	324	6	those	those	DT
33912	324	7	in	in	IN
33912	324	8	use	use	NN
33912	324	9	were	be	VBD
33912	324	10	only	only	RB
33912	324	11	removed	remove	VBN
33912	324	12	as	as	IN
33912	324	13	required	require	VBN
33912	324	14	by	by	IN
33912	324	15	heavier	heavy	JJR
33912	324	16	motive	motive	JJ
33912	324	17	power	power	NN
33912	324	18	.	.	.
33912	325	1	The	the	DT
33912	325	2	Harpers	Harpers	NNP
33912	325	3	Ferry	Ferry	NNP
33912	325	4	span	span	NN
33912	325	5	,	,	,
33912	325	6	as	as	IN
33912	325	7	noted	note	VBN
33912	325	8	,	,	,
33912	325	9	remained	remain	VBD
33912	325	10	in	in	IN
33912	325	11	full	full	JJ
33912	325	12	main	main	JJ
33912	325	13	-	-	HYPH
33912	325	14	line	line	NN
33912	325	15	service	service	NN
33912	325	16	until	until	IN
33912	325	17	1894	1894	CD
33912	325	18	.	.	.
33912	326	1	Bollman	Bollman	NNP
33912	326	2	trusses	truss	NNS
33912	326	3	on	on	IN
33912	326	4	feeder	feeder	NN
33912	326	5	lines	line	NNS
33912	326	6	were	be	VBD
33912	326	7	continued	continue	VBN
33912	326	8	in	in	IN
33912	326	9	use	use	NN
33912	326	10	until	until	IN
33912	326	11	much	much	RB
33912	326	12	later	later	RB
33912	326	13	;	;	:
33912	326	14	a	a	DT
33912	326	15	number	number	NN
33912	326	16	of	of	IN
33912	326	17	them	-PRON-	PRP
33912	326	18	on	on	IN
33912	326	19	the	the	DT
33912	326	20	Valley	Valley	NNP
33912	326	21	Railroad	Railroad	NNP
33912	326	22	of	of	IN
33912	326	23	Virginia	Virginia	NNP
33912	326	24	(	(	-LRB-
33912	326	25	see	see	UH
33912	326	26	fig	fig	NN
33912	326	27	.	.	.
33912	327	1	22	22	CD
33912	327	2	)	)	-RRB-
33912	327	3	were	be	VBD
33912	327	4	not	not	RB
33912	327	5	removed	remove	VBN
33912	327	6	until	until	IN
33912	327	7	1923	1923	CD
33912	327	8	.	.	.
33912	328	1	However	however	RB
33912	328	2	,	,	,
33912	328	3	only	only	RB
33912	328	4	on	on	IN
33912	328	5	the	the	DT
33912	328	6	most	most	RBS
33912	328	7	isolated	isolated	JJ
33912	328	8	spurs	spur	NNS
33912	328	9	was	be	VBD
33912	328	10	the	the	DT
33912	328	11	Bollman	Bollman	NNP
33912	328	12	truss	truss	NN
33912	328	13	permitted	permit	VBD
33912	328	14	to	to	TO
33912	328	15	reach	reach	VB
33912	328	16	really	really	RB
33912	328	17	ripe	ripe	JJ
33912	328	18	age	age	NN
33912	328	19	.	.	.
33912	329	1	The	the	DT
33912	329	2	sole	sole	NN
33912	329	3	known	know	VBD
33912	329	4	remaining	remain	VBG
33912	329	5	example	example	NN
33912	329	6	(	(	-LRB-
33912	329	7	fig	fig	NN
33912	329	8	.	.	.
33912	330	1	23	23	LS
33912	330	2	)	)	-RRB-
33912	330	3	stands	stand	VBZ
33912	330	4	on	on	IN
33912	330	5	such	such	PDT
33912	330	6	a	a	DT
33912	330	7	branch	branch	NN
33912	330	8	--	--	:
33912	330	9	ironically	ironically	RB
33912	330	10	,	,	,
33912	330	11	at	at	IN
33912	330	12	Savage	Savage	NNP
33912	330	13	,	,	,
33912	330	14	over	over	IN
33912	330	15	the	the	DT
33912	330	16	Little	Little	NNP
33912	330	17	Patuxent	Patuxent	NNP
33912	330	18	,	,	,
33912	330	19	the	the	DT
33912	330	20	site	site	NN
33912	330	21	of	of	IN
33912	330	22	the	the	DT
33912	330	23	first	first	JJ
33912	330	24	Bollman	Bollman	NNP
33912	330	25	span	span	NN
33912	330	26	.	.	.
33912	331	1	This	this	DT
33912	331	2	is	be	VBZ
33912	331	3	not	not	RB
33912	331	4	the	the	DT
33912	331	5	1850	1850	CD
33912	331	6	bridge	bridge	NN
33912	331	7	,	,	,
33912	331	8	but	but	CC
33912	331	9	one	one	CD
33912	331	10	built	build	VBD
33912	331	11	in	in	IN
33912	331	12	1852	1852	CD
33912	331	13	and	and	CC
33912	331	14	moved	move	VBD
33912	331	15	to	to	IN
33912	331	16	the	the	DT
33912	331	17	present	present	JJ
33912	331	18	site	site	NN
33912	331	19	30	30	CD
33912	331	20	years	year	NNS
33912	331	21	later	later	RB
33912	331	22	.	.	.
33912	332	1	The	the	DT
33912	332	2	fate	fate	NN
33912	332	3	of	of	IN
33912	332	4	the	the	DT
33912	332	5	first	first	JJ
33912	332	6	span	span	NN
33912	332	7	is	be	VBZ
33912	332	8	not	not	RB
33912	332	9	known	know	VBN
33912	332	10	.	.	.
33912	333	1	[	[	-LRB-
33912	333	2	Illustration	illustration	NN
33912	333	3	:	:	:
33912	333	4	Figure	figure	NN
33912	333	5	24.--HOT	24.--hot	CD
33912	333	6	-	-	:
33912	333	7	WATER	water	NN
33912	333	8	AND	and	CC
33912	333	9	CHOCOLATE	CHOCOLATE	NNP
33912	333	10	PITCHERS	pitcher	NNS
33912	333	11	of	of	IN
33912	333	12	the	the	DT
33912	333	13	10-piece	10-piece	CD
33912	333	14	,	,	,
33912	333	15	silver	silver	NN
33912	333	16	tea	tea	NN
33912	333	17	service	service	NN
33912	333	18	presented	present	VBN
33912	333	19	to	to	IN
33912	333	20	Bollman	Bollman	NNP
33912	333	21	by	by	IN
33912	333	22	his	-PRON-	PRP$
33912	333	23	fellow	fellow	JJ
33912	333	24	employees	employee	NNS
33912	333	25	when	when	WRB
33912	333	26	he	-PRON-	PRP
33912	333	27	resigned	resign	VBD
33912	333	28	from	from	IN
33912	333	29	the	the	DT
33912	333	30	Baltimore	Baltimore	NNP
33912	333	31	and	and	CC
33912	333	32	Ohio	Ohio	NNP
33912	333	33	in	in	IN
33912	333	34	1858	1858	CD
33912	333	35	.	.	.
33912	334	1	A	a	DT
33912	334	2	railroad	railroad	NN
33912	334	3	motif	motif	NN
33912	334	4	was	be	VBD
33912	334	5	used	use	VBN
33912	334	6	throughout	throughout	IN
33912	334	7	,	,	,
33912	334	8	each	each	DT
33912	334	9	piece	piece	NN
33912	334	10	being	be	VBG
33912	334	11	circled	circle	VBN
33912	334	12	at	at	IN
33912	334	13	top	top	NN
33912	334	14	and	and	CC
33912	334	15	bottom	bottom	NN
33912	334	16	by	by	IN
33912	334	17	a	a	DT
33912	334	18	track	track	NN
33912	334	19	,	,	,
33912	334	20	complete	complete	JJ
33912	334	21	with	with	IN
33912	334	22	rail	rail	NN
33912	334	23	of	of	IN
33912	334	24	accurate	accurate	JJ
33912	334	25	section	section	NN
33912	334	26	and	and	CC
33912	334	27	ties	tie	NNS
33912	334	28	.	.	.
33912	335	1	Spouts	spout	NNS
33912	335	2	are	be	VBP
33912	335	3	in	in	IN
33912	335	4	simulation	simulation	NN
33912	335	5	of	of	IN
33912	335	6	hexagonal	hexagonal	JJ
33912	335	7	sheet	sheet	NN
33912	335	8	-	-	HYPH
33912	335	9	iron	iron	NN
33912	335	10	chimneys	chimney	NNS
33912	335	11	,	,	,
33912	335	12	with	with	IN
33912	335	13	seams	seam	NNS
33912	335	14	riveted	rivet	VBN
33912	335	15	,	,	,
33912	335	16	and	and	CC
33912	335	17	the	the	DT
33912	335	18	handles	handle	NNS
33912	335	19	are	be	VBP
33912	335	20	in	in	IN
33912	335	21	the	the	DT
33912	335	22	form	form	NN
33912	335	23	of	of	IN
33912	335	24	a	a	DT
33912	335	25	surveyor	surveyor	NN
33912	335	26	's	's	POS
33912	335	27	telescope	telescope	NN
33912	335	28	.	.	.
33912	336	1	On	on	IN
33912	336	2	the	the	DT
33912	336	3	various	various	JJ
33912	336	4	pieces	piece	NNS
33912	336	5	are	be	VBP
33912	336	6	engraved	engrave	VBN
33912	336	7	the	the	DT
33912	336	8	designs	design	NNS
33912	336	9	of	of	IN
33912	336	10	the	the	DT
33912	336	11	more	more	RBR
33912	336	12	important	important	JJ
33912	336	13	B.	B.	NNP
33912	337	1	&	&	CC
33912	337	2	O.	O.	NNP
33912	337	3	bridges	bridge	NNS
33912	337	4	.	.	.
33912	338	1	Throughout	throughout	IN
33912	338	2	is	be	VBZ
33912	338	3	a	a	DT
33912	338	4	wonderful	wonderful	JJ
33912	338	5	profusion	profusion	NN
33912	338	6	of	of	IN
33912	338	7	bits	bit	NNS
33912	338	8	and	and	CC
33912	338	9	objects	object	NNS
33912	338	10	of	of	IN
33912	338	11	railroadiana	railroadiana	NNP
33912	338	12	in	in	IN
33912	338	13	low	low	JJ
33912	338	14	relief	relief	NN
33912	338	15	,	,	,
33912	338	16	high	high	JJ
33912	338	17	relief	relief	NN
33912	338	18	,	,	,
33912	338	19	and	and	CC
33912	338	20	fully	fully	RB
33912	338	21	modeled	model	VBN
33912	338	22	.	.	.
33912	339	1	In	in	IN
33912	339	2	Board	Board	NNP
33912	339	3	of	of	IN
33912	339	4	Directors	Directors	NNPS
33912	339	5	Room	Room	NNP
33912	339	6	,	,	,
33912	339	7	Baltimore	Baltimore	NNP
33912	339	8	and	and	CC
33912	339	9	Ohio	Ohio	NNP
33912	339	10	Railroad	Railroad	NNP
33912	339	11	Company	Company	NNP
33912	339	12	,	,	,
33912	339	13	Baltimore	Baltimore	NNP
33912	339	14	,	,	,
33912	339	15	Md.	Md.	NNP
33912	340	1	(	(	-LRB-
33912	340	2	_	_	NNP
33912	340	3	Photo	Photo	NNP
33912	340	4	courtesy	courtesy	NN
33912	340	5	of	of	IN
33912	340	6	Baltimore	Baltimore	NNP
33912	340	7	and	and	CC
33912	340	8	Ohio	Ohio	NNP
33912	340	9	Railroad	Railroad	NNP
33912	340	10	.	.	.
33912	340	11	_	_	NNP
33912	340	12	)	)	-RRB-
33912	340	13	]	]	-RRB-
33912	340	14	Known	know	VBN
33912	340	15	Bollman	Bollman	NNP
33912	340	16	Works	Works	NNP
33912	340	17	(	(	-LRB-
33912	340	18	All	all	DT
33912	340	19	B.	B.	NNP
33912	341	1	&	&	CC
33912	341	2	O.	O.	NNP
33912	341	3	works	work	VBZ
33912	341	4	listed	list	VBN
33912	341	5	were	be	VBD
33912	341	6	designed	design	VBN
33912	341	7	by	by	IN
33912	341	8	Bollman	Bollman	NNP
33912	341	9	and	and	CC
33912	341	10	built	build	VBN
33912	341	11	by	by	IN
33912	341	12	the	the	DT
33912	341	13	railroad	railroad	NN
33912	341	14	,	,	,
33912	341	15	unless	unless	IN
33912	341	16	otherwise	otherwise	RB
33912	341	17	indicated	indicate	VBN
33912	341	18	.	.	.
33912	341	19	)	)	-RRB-
33912	342	1	Dates	date	NNS
33912	342	2	of	of	IN
33912	342	3	Location	location	NN
33912	342	4	Type	type	NN
33912	342	5	No	no	UH
33912	342	6	.	.	.
33912	343	1	spans	spans	NNPS
33912	343	2	Remarks	Remarks	NNPS
33912	343	3	service	service	NN
33912	343	4	/	/	SYM
33912	343	5	length	length	NN
33912	343	6	of	of	IN
33912	343	7	each	each	DT
33912	343	8	1850-	1850-	CD
33912	343	9	?	?	.
33912	344	1	Savage	Savage	NNP
33912	344	2	,	,	,
33912	344	3	Md.	Md.	NNP
33912	344	4	,	,	,
33912	344	5	Little	Little	NNP
33912	344	6	Bollman	Bollman	NNP
33912	344	7	1/76	1/76	CD
33912	344	8	'	'	''
33912	344	9	First	First	NNP
33912	344	10	Bollman	Bollman	NNP
33912	344	11	truss	truss	NN
33912	344	12	Patuxent	Patuxent	NNP
33912	344	13	River	River	NNP
33912	344	14	through	through	IN
33912	344	15	erected	erect	VBN
33912	344	16	;	;	:
33912	344	17	granite	granite	NN
33912	344	18	towers	tower	NNS
33912	344	19	;	;	:
33912	344	20	truss	truss	NN
33912	344	21	cost	cost	NN
33912	344	22	,	,	,
33912	344	23	$	$	$
33912	344	24	23,825	23,825	CD
33912	344	25	.	.	.
33912	345	1	B.	B.	NNP
33912	346	1	&	&	CC
33912	346	2	O.	O.	NNP
33912	346	3	RR	RR	NNP
33912	346	4	.	.	.
33912	347	1	1851-	1851-	CD
33912	347	2	?	?	.
33912	348	1	Bladensburg	Bladensburg	NNP
33912	348	2	,	,	,
33912	348	3	Md.	Md.	NNP
33912	348	4	,	,	,
33912	348	5	Bollman	Bollman	NNP
33912	348	6	1/	1/	CD
33912	348	7	?	?	.
33912	349	1	Second	second	JJ
33912	349	2	Bollman	Bollman	NNP
33912	349	3	truss	truss	NN
33912	349	4	Anacostia	Anacostia	NNP
33912	349	5	River	River	NNP
33912	349	6	through	through	IN
33912	349	7	erected	erect	VBN
33912	349	8	;	;	:
33912	349	9	granite	granite	NN
33912	349	10	towers	tower	NNS
33912	349	11	;	;	:
33912	349	12	truss	truss	NN
33912	349	13	cost	cost	NN
33912	349	14	,	,	,
33912	349	15	$	$	$
33912	349	16	19,430	19,430	CD
33912	349	17	.	.	.
33912	350	1	B.	B.	NNP
33912	351	1	&	&	CC
33912	351	2	O.	O.	NNP
33912	351	3	RR	RR	NNP
33912	351	4	.	.	.
33912	352	1	1851	1851	CD
33912	352	2	-	-	SYM
33912	352	3	1862	1862	CD
33912	352	4	Harpers	Harpers	NNP
33912	352	5	Ferry	Ferry	NNP
33912	352	6	,	,	,
33912	352	7	Va.	Virginia	NNP
33912	352	8	,	,	,
33912	352	9	Bollman	Bollman	NNP
33912	352	10	1/124	1/124	VBZ
33912	352	11	'	'	''
33912	352	12	Winchester	Winchester	NNP
33912	352	13	span	span	NN
33912	352	14	;	;	:
33912	352	15	first	first	JJ
33912	352	16	Potomac	Potomac	NNP
33912	352	17	River	River	NNP
33912	352	18	through	through	IN
33912	352	19	major	major	JJ
33912	352	20	Bollman	bollman	JJ
33912	352	21	truss	truss	NN
33912	352	22	;	;	:
33912	352	23	three	three	CD
33912	352	24	truss	truss	NN
33912	352	25	lines	line	NNS
33912	352	26	of	of	IN
33912	352	27	truss	truss	NNP
33912	352	28	;	;	:
33912	352	29	granite	granite	NN
33912	352	30	towers	tower	NNS
33912	352	31	;	;	,
33912	352	32	blown	blow	VBN
33912	352	33	up	up	RP
33912	352	34	by	by	IN
33912	352	35	Confederate	Confederate	NNP
33912	352	36	Army	Army	NNP
33912	352	37	on	on	IN
33912	352	38	September	September	NNP
33912	352	39	24	24	CD
33912	352	40	,	,	,
33912	352	41	1862	1862	CD
33912	352	42	.	.	.
33912	353	1	B.	B.	NNP
33912	354	1	&	&	CC
33912	354	2	O.	O.	NNP
33912	354	3	RR	RR	NNP
33912	354	4	.	.	.
33912	355	1	1851-	1851-	CD
33912	355	2	?	?	.
33912	356	1	Baltimore	Baltimore	NNP
33912	356	2	,	,	,
33912	356	3	Md.	Md.	NNP
33912	356	4	,	,	,
33912	356	5	Trestle	Trestle	NNP
33912	356	6	--	--	:
33912	356	7	Wood	wood	NN
33912	356	8	trestle	trestle	NN
33912	356	9	bents	bent	NNS
33912	356	10	with	with	IN
33912	356	11	Carey	Carey	NNP
33912	356	12	Street	Street	NNP
33912	356	13	wrought	wrought	NN
33912	356	14	-	-	HYPH
33912	356	15	iron	iron	NN
33912	356	16	diagonals	diagonal	NNS
33912	356	17	.	.	.
33912	357	1	First	first	JJ
33912	357	2	use	use	NN
33912	357	3	of	of	IN
33912	357	4	iron	iron	NN
33912	357	5	structural	structural	JJ
33912	357	6	members	member	NNS
33912	357	7	in	in	IN
33912	357	8	trestlework	trestlework	NN
33912	357	9	.	.	.
33912	358	1	Total	total	JJ
33912	358	2	length	length	NN
33912	358	3	76	76	CD
33912	358	4	feet	foot	NNS
33912	358	5	.	.	.
33912	359	1	B.	B.	NNP
33912	360	1	&	&	CC
33912	360	2	O.	O.	NNP
33912	360	3	RR	RR	NNP
33912	360	4	.	.	.
33912	361	1	1852-	1852-	CD
33912	361	2	Savage	Savage	NNP
33912	361	3	,	,	,
33912	361	4	Md.	Md.	NNP
33912	361	5	,	,	,
33912	361	6	Little	Little	NNP
33912	361	7	Bollman	Bollman	NNP
33912	361	8	2	2	CD
33912	361	9	/	/	SYM
33912	361	10	±80	â±80	XX
33912	361	11	'	'	''
33912	361	12	Still	still	RB
33912	361	13	standing	stand	VBG
33912	361	14	.	.	.
33912	362	1	Moved	move	VBN
33912	362	2	to	to	IN
33912	362	3	Patuxent	Patuxent	NNP
33912	362	4	River	River	NNP
33912	362	5	through	through	IN
33912	362	6	Savage	Savage	NNP
33912	362	7	in	in	IN
33912	362	8	1888	1888	CD
33912	362	9	;	;	,
33912	362	10	original	original	JJ
33912	362	11	truss	truss	NN
33912	362	12	location	location	NN
33912	362	13	unknown	unknown	NN
33912	362	14	.	.	.
33912	363	1	This	this	DT
33912	363	2	and	and	CC
33912	363	3	succeeding	succeed	VBG
33912	363	4	Bollman	Bollman	NNP
33912	363	5	trusses	truss	NNS
33912	363	6	use	use	VBP
33912	363	7	iron	iron	NN
33912	363	8	towers	tower	NNS
33912	363	9	.	.	.
33912	364	1	B.	B.	NNP
33912	365	1	&	&	CC
33912	365	2	O.	O.	NNP
33912	365	3	RR	RR	NNP
33912	365	4	.	.	.
33912	366	1	1852	1852	CD
33912	366	2	(	(	-LRB-
33912	366	3	or	or	CC
33912	366	4	Marriottsville	Marriottsville	NNP
33912	366	5	,	,	,
33912	366	6	Bollman	Bollman	NNP
33912	366	7	1/50	1/50	CD
33912	366	8	'	'	''
33912	366	9	One	one	CD
33912	366	10	of	of	IN
33912	366	11	first	first	JJ
33912	366	12	Bollman	bollman	JJ
33912	366	13	1853)-	1853)-	CD
33912	366	14	?	?	.
33912	367	1	Md.	Md.	NNP
33912	367	2	,	,	,
33912	367	3	Patapsco	Patapsco	NNP
33912	367	4	River	River	NNP
33912	367	5	truss	truss	NN
33912	367	6	trusses	truss	NNS
33912	367	7	with	with	IN
33912	367	8	iron	iron	NN
33912	367	9	towers	tower	NNS
33912	367	10	.	.	.
33912	368	1	B.	B.	NNP
33912	369	1	&	&	CC
33912	369	2	O.	O.	NNP
33912	369	3	RR	RR	NNP
33912	369	4	.	.	.
33912	370	1	1853-	1853-	CD
33912	370	2	?	?	.
33912	371	1	Zanesville	Zanesville	NNP
33912	371	2	,	,	,
33912	371	3	Ohio	Ohio	NNP
33912	371	4	,	,	,
33912	371	5	Bollman	Bollman	NNP
33912	371	6	4/124	4/124	CD
33912	371	7	'	'	``
33912	371	8	Double	double	JJ
33912	371	9	track	track	NN
33912	371	10	,	,	,
33912	371	11	Central	Central	NNP
33912	371	12	Ohio	Ohio	NNP
33912	371	13	Muskingum	Muskingum	NNP
33912	371	14	River	River	NNP
33912	371	15	truss	truss	NN
33912	371	16	(	(	-LRB-
33912	371	17	or	or	CC
33912	371	18	RR	RR	NNP
33912	371	19	.	.	.
33912	372	1	Designed	design	VBN
33912	372	2	by	by	IN
33912	372	3	Bollman	Bollman	NNP
33912	372	4	;	;	:
33912	372	5	5/160	5/160	NNP
33912	372	6	'	'	''
33912	372	7	)	)	-RRB-
33912	372	8	built	build	VBN
33912	372	9	by	by	IN
33912	372	10	Douglas	Douglas	NNP
33912	372	11	,	,	,
33912	372	12	Smith	Smith	NNP
33912	372	13	&	&	CC
33912	372	14	Co.	Co.	NNP
33912	372	15	,	,	,
33912	372	16	Zanesville	Zanesville	NNP
33912	372	17	.	.	.
33912	373	1	1854-	1854-	CD
33912	373	2	Elysville	Elysville	NNP
33912	373	3	(	(	-LRB-
33912	373	4	now	now	RB
33912	373	5	Bollman	Bollman	NNP
33912	373	6	3/97'9	3/97'9	NNP
33912	373	7	"	"	``
33912	373	8	Upper	upper	JJ
33912	373	9	bridge	bridge	NN
33912	373	10	,	,	,
33912	373	11	skew	skew	JJ
33912	373	12	.	.	.
33912	374	1	Cost	cost	NN
33912	374	2	,	,	,
33912	374	3	1870	1870	CD
33912	374	4	(	(	-LRB-
33912	374	5	?	?	.
33912	374	6	)	)	-RRB-
33912	375	1	Daniels	Daniels	NNP
33912	375	2	)	)	-RRB-
33912	375	3	,	,	,
33912	375	4	Md.	Md.	NNP
33912	375	5	,	,	,
33912	375	6	through	through	IN
33912	375	7	$	$	$
33912	375	8	24,477.59	24,477.59	CD
33912	375	9	.	.	.
33912	376	1	B.	B.	NNP
33912	377	1	&	&	CC
33912	377	2	O.	O.	NNP
33912	377	3	RR	RR	NNP
33912	377	4	.	.	.
33912	378	1	Patapsco	Patapsco	NNP
33912	378	2	River	River	NNP
33912	378	3	truss	truss	NN
33912	378	4	1854	1854	CD
33912	378	5	-	-	HYPH
33912	378	6	1862	1862	CD
33912	378	7	Monocacy	Monocacy	NNP
33912	378	8	,	,	,
33912	378	9	Md.	Md.	NNP
33912	378	10	,	,	,
33912	378	11	Bollman	Bollman	NNP
33912	378	12	3/119	3/119	,
33912	378	13	'	'	''
33912	378	14	Blown	blow	VBN
33912	378	15	up	up	RP
33912	378	16	September	September	NNP
33912	378	17	8	8	CD
33912	378	18	,	,	,
33912	378	19	Monocacy	Monocacy	NNP
33912	378	20	River	River	NNP
33912	378	21	truss	truss	NN
33912	378	22	1862	1862	CD
33912	378	23	;	;	:
33912	378	24	rebuilt	rebuild	VBD
33912	378	25	in	in	IN
33912	378	26	1864	1864	CD
33912	378	27	.	.	.
33912	379	1	Cost	cost	NN
33912	379	2	,	,	,
33912	379	3	$	$	$
33912	379	4	22,722.59	22,722.59	CD
33912	379	5	.	.	.
33912	380	1	B.	B.	NNP
33912	381	1	&	&	CC
33912	381	2	O.	O.	NNP
33912	381	3	RR	RR	NNP
33912	381	4	.	.	.
33912	382	1	1854-	1854-	CD
33912	382	2	?	?	.
33912	383	1	Eastern	Eastern	NNP
33912	383	2	Ohio	Ohio	NNP
33912	383	3	Bollman	Bollman	NNP
33912	383	4	1/40	1/40	CD
33912	383	5	'	'	''
33912	383	6	C.	C.	NNP
33912	383	7	O.	O.	NNP
33912	383	8	RR	RR	NNP
33912	383	9	.	.	.
33912	384	1	Section	section	NN
33912	384	2	76	76	CD
33912	384	3	truss	truss	NN
33912	384	4	(	(	-LRB-
33912	384	5	?	?	.
33912	384	6	)	)	-RRB-
33912	385	1	adjacent	adjacent	JJ
33912	385	2	to	to	IN
33912	385	3	300-ft	300-ft	CD
33912	385	4	.	.	.
33912	385	5	tunnel	tunnel	NNP
33912	385	6	.	.	.
33912	386	1	1855-	1855-	CD
33912	386	2	?	?	.
33912	387	1	Bridgeville	Bridgeville	NNP
33912	387	2	,	,	,
33912	387	3	Ohio	Ohio	NNP
33912	387	4	,	,	,
33912	387	5	Bollman	Bollman	NNP
33912	387	6	1/71	1/71	NNP
33912	387	7	'	'	POS
33912	387	8	C.	C.	NNP
33912	387	9	O.	O.	NNP
33912	387	10	RR	RR	NNP
33912	387	11	.	.	.
33912	388	1	Salt	Salt	NNP
33912	388	2	Creek	Creek	NNP
33912	388	3	deck	deck	NN
33912	388	4	truss	truss	NN
33912	388	5	Pre-1855-	Pre-1855-	NNP
33912	388	6	?	?	.
33912	389	1	Buffalo	Buffalo	NNP
33912	389	2	,	,	,
33912	389	3	N.Y.	New York	NNP
33912	389	4	--	--	:
33912	389	5	--	--	:
33912	389	6	Unidentified	unidentified	JJ
33912	389	7	.	.	.
33912	390	1	Mentioned	mention	VBN
33912	390	2	by	by	IN
33912	390	3	George	George	NNP
33912	390	4	Vose	Vose	NNP
33912	390	5	in	in	IN
33912	390	6	Railroad	Railroad	NNP
33912	390	7	Advocate	Advocate	NNP
33912	390	8	(	(	-LRB-
33912	390	9	June	June	NNP
33912	390	10	9	9	CD
33912	390	11	,	,	,
33912	390	12	1855	1855	CD
33912	390	13	)	)	-RRB-
33912	390	14	.	.	.
33912	391	1	1856-	1856-	CD
33912	391	2	?	?	.
33912	392	1	Elysville	Elysville	NNP
33912	392	2	,	,	,
33912	392	3	Md.	Md.	NNP
33912	392	4	,	,	,
33912	392	5	Bollman	Bollman	NNP
33912	392	6	3/111	3/111	NNP
33912	392	7	'	'	''
33912	392	8	Lower	low	JJR
33912	392	9	Bridge	Bridge	NNP
33912	392	10	.	.	.
33912	393	1	B.	B.	NNP
33912	394	1	&	&	CC
33912	394	2	O.	O.	NNP
33912	394	3	RR	RR	NNP
33912	394	4	.	.	.
33912	395	1	about	about	RB
33912	395	2	1	1	CD
33912	395	3	-	-	SYM
33912	395	4	1/4	1/4	CD
33912	395	5	miles	mile	NNS
33912	395	6	through	through	IN
33912	395	7	east	east	NN
33912	395	8	of	of	IN
33912	395	9	1854	1854	CD
33912	395	10	truss	truss	NNP
33912	395	11	bridge	bridge	NN
33912	395	12	,	,	,
33912	395	13	Patapsco	Patapsco	NNP
33912	395	14	River	River	NNP
33912	395	15	Pre-1856-	Pre-1856-	NNPS
33912	395	16	?	?	.
33912	396	1	Marriottsville	Marriottsville	NNP
33912	396	2	,	,	,
33912	396	3	Bollman	Bollman	NNP
33912	396	4	1/48'9	1/48'9	NNP
33912	396	5	"	"	``
33912	396	6	Referred	refer	VBN
33912	396	7	to	to	IN
33912	396	8	as	as	IN
33912	396	9	"	"	``
33912	396	10	Tunnel	Tunnel	NNP
33912	396	11	Md.	Md.	NNP
33912	397	1	truss	truss	NNP
33912	397	2	(	(	-LRB-
33912	397	3	?	?	.
33912	397	4	)	)	-RRB-
33912	398	1	Bridge	Bridge	NNP
33912	398	2	"	"	''
33912	398	3	in	in	IN
33912	398	4	B.	B.	NNP
33912	399	1	&	&	CC
33912	399	2	O.	O.	NNP
33912	399	3	RR	RR	NNP
33912	399	4	.	.	.
33912	400	1	annual	annual	JJ
33912	400	2	report	report	NN
33912	400	3	,	,	,
33912	400	4	1856	1856	CD
33912	400	5	.	.	.
33912	401	1	1856-	1856-	CD
33912	401	2	?	?	.
33912	402	1	Near	near	IN
33912	402	2	Ijamsville	Ijamsville	NNP
33912	402	3	,	,	,
33912	402	4	"	"	``
33912	402	5	Iron	iron	NN
33912	402	6	3/23'9	3/23'9	CD
33912	402	7	"	"	''
33912	402	8	Possibly	possibly	RB
33912	402	9	trussed	truss	VBN
33912	402	10	beams	beam	NNS
33912	402	11	;	;	:
33912	402	12	Md.	Md.	NNP
33912	402	13	,	,	,
33912	402	14	Bush	Bush	NNP
33912	402	15	Creek	Creek	NNP
33912	402	16	girders	girder	NNS
33912	402	17	"	"	''
33912	402	18	mentioned	mention	VBN
33912	402	19	in	in	IN
33912	402	20	B.	B.	NNP
33912	403	1	&	&	CC
33912	403	2	O.	O.	NNP
33912	403	3	RR	RR	NNP
33912	403	4	.	.	.
33912	404	1	annual	annual	JJ
33912	404	2	report	report	NN
33912	404	3	,	,	,
33912	404	4	1856	1856	CD
33912	404	5	.	.	.
33912	405	1	1856-	1856-	CD
33912	405	2	?	?	.
33912	406	1	Near	near	IN
33912	406	2	Ijamsville	Ijamsville	NNP
33912	406	3	,	,	,
33912	406	4	"	"	``
33912	406	5	Iron	iron	NN
33912	406	6	2/23'9	2/23'9	CD
33912	406	7	"	"	''
33912	406	8	As	as	IN
33912	406	9	above	above	RB
33912	406	10	.	.	.
33912	407	1	Md.	Md.	NNP
33912	407	2	,	,	,
33912	407	3	Bush	Bush	NNP
33912	407	4	Creek	Creek	NNP
33912	407	5	girders	girder	VBZ
33912	407	6	"	"	``
33912	407	7	1856-	1856-	CD
33912	407	8	North	North	NNP
33912	407	9	Branch	Branch	NNP
33912	407	10	,	,	,
33912	407	11	Md.	Md.	NNP
33912	407	12	,	,	,
33912	407	13	Bollman	Bollman	NNP
33912	407	14	3/142	3/142	NNP
33912	407	15	'	'	POS
33912	407	16	Partially	partially	RB
33912	407	17	destroyed	destroy	VBN
33912	407	18	in	in	IN
33912	407	19	c.1862	c.1862	NNP
33912	407	20	Potomac	Potomac	NNP
33912	407	21	River	River	NNP
33912	407	22	deck	deck	NN
33912	407	23	truss	truss	NN
33912	407	24	Civil	Civil	NNP
33912	407	25	War	War	NNP
33912	407	26	.	.	.
33912	408	1	B.	B.	NNP
33912	409	1	&	&	CC
33912	409	2	O.	O.	NNP
33912	409	3	RR	RR	NNP
33912	409	4	.	.	.
33912	410	1	1860	1860	CD
33912	410	2	-	-	SYM
33912	410	3	1906	1906	CD
33912	410	4	Chile	Chile	NNP
33912	410	5	,	,	,
33912	410	6	Angostura	Angostura	NNP
33912	410	7	Bollman	Bollman	NNP
33912	410	8	4/115	4/115	NNP
33912	410	9	'	'	''
33912	410	10	Chilean	Chilean	NNP
33912	410	11	Railways	Railways	NNPS
33912	410	12	.	.	.
33912	411	1	River	river	NN
33912	411	2	truss	truss	NN
33912	411	3	(	(	-LRB-
33912	411	4	?	?	.
33912	411	5	)	)	-RRB-
33912	412	1	Designed	design	VBN
33912	412	2	and	and	CC
33912	412	3	built	build	VBN
33912	412	4	by	by	IN
33912	412	5	Bollman	Bollman	NNP
33912	412	6	.	.	.
33912	413	1	Replaced	replace	VBN
33912	413	2	by	by	IN
33912	413	3	bridge	bridge	NN
33912	413	4	built	build	VBN
33912	413	5	by	by	IN
33912	413	6	French	french	JJ
33912	413	7	firm	firm	NN
33912	413	8	of	of	IN
33912	413	9	Schneider	Schneider	NNP
33912	413	10	,	,	,
33912	413	11	Cruesot	Cruesot	NNP
33912	413	12	&	&	CC
33912	413	13	Co.	Co.	NNP
33912	413	14	1860	1860	CD
33912	413	15	-	-	SYM
33912	413	16	1910	1910	CD
33912	413	17	Chile	Chile	NNP
33912	413	18	,	,	,
33912	413	19	Paine	Paine	NNP
33912	413	20	River	River	NNP
33912	413	21	Bollman	Bollman	NNP
33912	413	22	1/	1/	CD
33912	413	23	?	?	.
33912	414	1	As	as	IN
33912	414	2	above	above	RB
33912	414	3	.	.	.
33912	415	1	truss	truss	NNP
33912	415	2	(	(	-LRB-
33912	415	3	?	?	.
33912	415	4	)	)	-RRB-
33912	416	1	Post-	Post-	NNP
33912	416	2	Ilchester	Ilchester	NNP
33912	416	3	,	,	,
33912	416	4	Md.	Md.	NNP
33912	416	5	,	,	,
33912	416	6	Bollman	Bollman	NNP
33912	416	7	1/	1/	CD
33912	416	8	?	?	.
33912	417	1	B.	B.	NNP
33912	418	1	&	&	CC
33912	418	2	O.	O.	NNP
33912	418	3	RR	RR	NNP
33912	418	4	.	.	.
33912	419	1	1860-	1860-	CD
33912	419	2	?	?	.
33912	420	1	Patapsco	Patapsco	NNP
33912	420	2	River	River	NNP
33912	420	3	through	through	IN
33912	420	4	truss	truss	NN
33912	420	5	Pre-1861-	Pre-1861-	.
33912	420	6	?	?	.
33912	421	1	Cuba	Cuba	NNP
33912	421	2	Bridges	Bridges	NNPS
33912	421	3	--	--	:
33912	421	4	All	all	DT
33912	421	5	bridges	bridge	NNS
33912	421	6	on	on	IN
33912	421	7	Havana	Havana	NNP
33912	421	8	and	and	CC
33912	421	9	RR	RR	NNP
33912	421	10	.	.	.
33912	421	11	,	,	,
33912	421	12	including	include	VBG
33912	421	13	iron	iron	NN
33912	421	14	station	station	NN
33912	421	15	station	station	NNP
33912	421	16	house	house	NNP
33912	421	17	and	and	CC
33912	421	18	bridge	bridge	NNP
33912	421	19	house	house	NN
33912	421	20	at	at	IN
33912	421	21	Guines	Guines	NNP
33912	421	22	.	.	.
33912	422	1	Designed	design	VBN
33912	422	2	and	and	CC
33912	422	3	built	build	VBN
33912	422	4	by	by	IN
33912	422	5	Bollman	Bollman	NNP
33912	422	6	.	.	.
33912	423	1	Pre-1861-	pre-1861-	LS
33912	423	2	?	?	.
33912	424	1	Cuba	Cuba	NNP
33912	424	2	Bridges	Bridges	NNPS
33912	424	3	--	--	:
33912	424	4	All	all	DT
33912	424	5	bridges	bridge	NNS
33912	424	6	on	on	IN
33912	424	7	Cienfuegos	Cienfuegos	NNP
33912	424	8	RR	RR	NNP
33912	424	9	.	.	.
33912	424	10	,	,	,
33912	424	11	Cárdenas	Cárdenas	NNP
33912	424	12	RR	RR	NNP
33912	424	13	.	.	NNP
33912	424	14	,	,	,
33912	424	15	and	and	CC
33912	424	16	Havana	Havana	NNP
33912	424	17	&	&	CC
33912	424	18	Matanzas	Matanzas	NNP
33912	424	19	RR	RR	NNP
33912	424	20	.	.	.
33912	425	1	Designed	design	VBN
33912	425	2	and	and	CC
33912	425	3	built	build	VBN
33912	425	4	by	by	IN
33912	425	5	Bollman	Bollman	NNP
33912	425	6	.	.	.
33912	426	1	Pre-1861-	pre-1861-	LS
33912	426	2	?	?	.
33912	427	1	Cuba	Cuba	NNP
33912	427	2	Trestle	Trestle	NNP
33912	427	3	--	--	:
33912	427	4	Trestle	trestle	VB
33912	427	5	with	with	IN
33912	427	6	wrought	wrought	NN
33912	427	7	-	-	HYPH
33912	427	8	iron	iron	NN
33912	427	9	columns	column	NNS
33912	427	10	(	(	-LRB-
33912	427	11	the	the	DT
33912	427	12	first	first	JJ
33912	427	13	such	such	JJ
33912	427	14	ever	ever	RB
33912	427	15	constructed	construct	VBN
33912	427	16	)	)	-RRB-
33912	427	17	.	.	.
33912	428	1	Havana	Havana	NNP
33912	428	2	RR	RR	NNP
33912	428	3	.	.	.
33912	429	1	Designed	design	VBN
33912	429	2	and	and	CC
33912	429	3	built	build	VBN
33912	429	4	by	by	IN
33912	429	5	Bollman	Bollman	NNP
33912	429	6	.	.	.
33912	430	1	1862	1862	CD
33912	430	2	-	-	SYM
33912	430	3	1862	1862	CD
33912	430	4	Harpers	Harpers	NNP
33912	430	5	Ferry	Ferry	NNP
33912	430	6	,	,	,
33912	430	7	Va.	Virginia	NNP
33912	430	8	,	,	,
33912	430	9	Bollman	Bollman	NNP
33912	430	10	2/160	2/160	NNP
33912	430	11	'	'	``
33912	430	12	Span	span	VB
33912	430	13	no	no	UH
33912	430	14	.	.	.
33912	431	1	3	3	LS
33912	431	2	(	(	-LRB-
33912	431	3	July	July	NNP
33912	431	4	24	24	CD
33912	431	5	)	)	-RRB-
33912	431	6	and	and	CC
33912	431	7	Potomac	Potomac	NNP
33912	431	8	River	River	NNP
33912	431	9	through	through	IN
33912	431	10	span	span	NN
33912	431	11	no	no	NN
33912	431	12	.	.	.
33912	432	1	4	4	LS
33912	432	2	(	(	-LRB-
33912	432	3	August	August	NNP
33912	432	4	21	21	CD
33912	432	5	)	)	-RRB-
33912	432	6	.	.	.
33912	433	1	truss	truss	NNP
33912	433	2	Blown	Blown	NNP
33912	433	3	up	up	RP
33912	433	4	September	September	NNP
33912	433	5	24	24	CD
33912	433	6	,	,	,
33912	433	7	1862	1862	CD
33912	433	8	.	.	.
33912	434	1	B.	B.	NNP
33912	435	1	&	&	CC
33912	435	2	O.	O.	NNP
33912	435	3	RR	RR	NNP
33912	435	4	.	.	.
33912	436	1	1862	1862	CD
33912	436	2	-	-	SYM
33912	436	3	1936	1936	CD
33912	436	4	Harpers	Harpers	NNP
33912	436	5	Ferry	Ferry	NNP
33912	436	6	,	,	,
33912	436	7	Va.	Virginia	NNP
33912	436	8	,	,	,
33912	436	9	Bollman	Bollman	NNP
33912	436	10	1/160	1/160	NNP
33912	436	11	'	'	``
33912	436	12	Span	span	VB
33912	436	13	no	no	UH
33912	436	14	.	.	.
33912	437	1	5	5	LS
33912	437	2	(	(	-LRB-
33912	437	3	November	November	NNP
33912	437	4	)	)	-RRB-
33912	437	5	.	.	.
33912	438	1	Potomac	Potomac	NNP
33912	438	2	River	River	NNP
33912	438	3	through	through	IN
33912	438	4	B.	B.	NNP
33912	439	1	&	&	CC
33912	439	2	O.	O.	NNP
33912	439	3	RR	RR	NNP
33912	439	4	.	.	.
33912	440	1	truss	truss	NNP
33912	440	2	1863	1863	CD
33912	440	3	-	-	SYM
33912	440	4	1936	1936	CD
33912	440	5	Harpers	Harpers	NNP
33912	440	6	Ferry	Ferry	NNP
33912	440	7	,	,	,
33912	440	8	Va.	Virginia	NNP
33912	440	9	,	,	,
33912	440	10	Bollman	Bollman	NNP
33912	440	11	3/160	3/160	NNP
33912	440	12	'	'	POS
33912	440	13	Spans	Spans	NNPS
33912	440	14	nos	nos	RB
33912	440	15	.	.	.
33912	441	1	3	3	CD
33912	441	2	,	,	,
33912	441	3	4	4	CD
33912	441	4	,	,	,
33912	441	5	and	and	CC
33912	441	6	5	5	CD
33912	441	7	.	.	.
33912	442	1	Potomac	Potomac	NNP
33912	442	2	River	River	NNP
33912	442	3	through	through	IN
33912	442	4	Constructed	construct	VBN
33912	442	5	previous	previous	JJ
33912	442	6	to	to	IN
33912	442	7	truss	truss	NN
33912	442	8	April	April	NNP
33912	442	9	1863	1863	CD
33912	442	10	.	.	.
33912	443	1	B.	B.	NNP
33912	444	1	&	&	CC
33912	444	2	O.	O.	NNP
33912	444	3	RR	RR	NNP
33912	444	4	.	.	.
33912	445	1	1863-	1863-	CD
33912	445	2	?	?	.
33912	446	1	Berwyn	Berwyn	NNP
33912	446	2	,	,	,
33912	446	3	Md.	Md.	NNP
33912	446	4	,	,	,
33912	446	5	Paint	Paint	NNP
33912	446	6	Bollman	Bollman	NNP
33912	446	7	?	?	.
33912	447	1	Iron	iron	NN
33912	447	2	bridge	bridge	NN
33912	447	3	mentioned	mention	VBD
33912	447	4	in	in	IN
33912	447	5	Branch	Branch	NNP
33912	447	6	truss	truss	NN
33912	447	7	(	(	-LRB-
33912	447	8	?	?	.
33912	447	9	)	)	-RRB-
33912	448	1	B.	B.	NNP
33912	449	1	&	&	CC
33912	449	2	O.	O.	NNP
33912	449	3	RR	RR	NNP
33912	449	4	.	.	.
33912	450	1	annual	annual	JJ
33912	450	2	report	report	NN
33912	450	3	,	,	,
33912	450	4	1863	1863	CD
33912	450	5	.	.	.
33912	451	1	1863(4?)-	1863(4?)-	CD
33912	451	2	?	?	.
33912	452	1	Clinton	Clinton	NNP
33912	452	2	,	,	,
33912	452	3	Iowa	Iowa	NNP
33912	452	4	,	,	,
33912	452	5	Pivot	Pivot	NNP
33912	452	6	1/360	1/360	CD
33912	452	7	'	'	''
33912	452	8	Built	build	VBN
33912	452	9	by	by	IN
33912	452	10	Detroit	Detroit	NNP
33912	452	11	Bridge	Bridge	NNP
33912	452	12	Mississippi	Mississippi	NNP
33912	452	13	River	River	NNP
33912	452	14	draw	draw	VBP
33912	452	15	&	&	CC
33912	452	16	Iron	Iron	NNP
33912	452	17	Works	Works	NNP
33912	452	18	.	.	.
33912	453	1	It	-PRON-	PRP
33912	453	2	was	be	VBD
33912	453	3	the	the	DT
33912	453	4	longest	long	JJS
33912	453	5	in	in	IN
33912	453	6	the	the	DT
33912	453	7	world	world	NN
33912	453	8	at	at	IN
33912	453	9	time	time	NN
33912	453	10	of	of	IN
33912	453	11	completion	completion	NN
33912	453	12	.	.	.
33912	454	1	Designed	design	VBN
33912	454	2	by	by	IN
33912	454	3	Bollman	Bollman	NNP
33912	454	4	.	.	.
33912	455	1	1864-	1864-	CD
33912	455	2	?	?	.
33912	456	1	Laurel	Laurel	NNP
33912	456	2	,	,	,
33912	456	3	Md.	Md.	NNP
33912	456	4	,	,	,
33912	456	5	Bollman	Bollman	NNP
33912	456	6	?	?	.
33912	457	1	Replaced	replace	VBN
33912	457	2	stone	stone	NN
33912	457	3	arch	arch	NN
33912	457	4	that	that	WDT
33912	457	5	Patuxent	Patuxent	NNP
33912	457	6	River	River	NNP
33912	457	7	truss	truss	NN
33912	457	8	had	have	VBD
33912	457	9	been	be	VBN
33912	457	10	washed	wash	VBN
33912	457	11	out	out	RP
33912	457	12	.	.	.
33912	458	1	B.	B.	NNP
33912	459	1	&	&	CC
33912	459	2	O.	O.	NNP
33912	459	3	RR	RR	NNP
33912	459	4	.	.	.
33912	460	1	c.	c.	NNP
33912	460	2	1864-	1864-	CD
33912	460	3	?	?	.
33912	461	1	Near	Near	NNP
33912	461	2	Veracruz	Veracruz	NNP
33912	461	3	,	,	,
33912	461	4	Bollman	Bollman	NNP
33912	461	5	1/115	1/115	NNP
33912	461	6	'	'	''
33912	461	7	Veracruz	Veracruz	NNP
33912	461	8	&	&	CC
33912	461	9	Jucaro	Jucaro	NNP
33912	461	10	RR	RR	NNP
33912	461	11	.	.	.
33912	462	1	Mexico	Mexico	NNP
33912	462	2	,	,	,
33912	462	3	Medellín	Medellín	NNP
33912	462	4	through	through	IN
33912	462	5	First	first	JJ
33912	462	6	iron	iron	NN
33912	462	7	bridge	bridge	NN
33912	462	8	in	in	IN
33912	462	9	River	River	NNP
33912	462	10	truss	truss	NN
33912	462	11	Mexico	Mexico	NNP
33912	462	12	.	.	.
33912	463	1	Designed	design	VBN
33912	463	2	and	and	CC
33912	463	3	built	build	VBN
33912	463	4	by	by	IN
33912	463	5	Bollman	Bollman	NNP
33912	463	6	.	.	.
33912	464	1	1864-	1864-	CD
33912	464	2	?	?	.
33912	465	1	Near	near	IN
33912	465	2	Point	Point	NNP
33912	465	3	of	of	IN
33912	465	4	Bollman	Bollman	NNP
33912	465	5	1/80	1/80	CD
33912	465	6	'	'	''
33912	465	7	(	(	-LRB-
33912	465	8	?	?	.
33912	465	9	)	)	-RRB-
33912	466	1	Iron	iron	NN
33912	466	2	bridge	bridge	NN
33912	466	3	mentioned	mention	VBN
33912	466	4	in	in	IN
33912	466	5	Rocks	Rocks	NNP
33912	466	6	,	,	,
33912	466	7	Md.	Md.	NNP
33912	466	8	,	,	,
33912	466	9	Back	back	RB
33912	466	10	truss	truss	NN
33912	466	11	(	(	-LRB-
33912	466	12	?	?	.
33912	466	13	)	)	-RRB-
33912	467	1	B.	B.	NNP
33912	468	1	&	&	CC
33912	468	2	O.	O.	NNP
33912	468	3	RR	RR	NNP
33912	468	4	.	.	.
33912	469	1	annual	annual	JJ
33912	469	2	Creek	Creek	NNP
33912	469	3	report	report	NN
33912	469	4	,	,	,
33912	469	5	1864	1864	CD
33912	469	6	.	.	.
33912	470	1	The	the	DT
33912	470	2	span	span	NN
33912	470	3	length	length	NN
33912	470	4	given	give	VBN
33912	470	5	is	be	VBZ
33912	470	6	that	that	DT
33912	470	7	of	of	IN
33912	470	8	previous	previous	JJ
33912	470	9	stone	stone	NN
33912	470	10	arch	arch	NN
33912	470	11	.	.	.
33912	471	1	1864-	1864-	CD
33912	471	2	?	?	.
33912	472	1	Bladensburg	Bladensburg	NNP
33912	472	2	,	,	,
33912	472	3	Md.	Md.	NNP
33912	472	4	,	,	,
33912	472	5	Bollman	Bollman	NNP
33912	472	6	1/	1/	CD
33912	472	7	?	?	.
33912	473	1	Span	span	VB
33912	473	2	for	for	IN
33912	473	3	second	second	JJ
33912	473	4	track	track	NN
33912	473	5	,	,	,
33912	473	6	to	to	IN
33912	473	7	Anacostia	Anacostia	NNP
33912	473	8	River	River	NNP
33912	473	9	truss	truss	NN
33912	473	10	match	match	NN
33912	473	11	1851	1851	CD
33912	473	12	span	span	NN
33912	473	13	.	.	.
33912	474	1	B.	B.	NNP
33912	475	1	&	&	CC
33912	475	2	O.	O.	NNP
33912	475	3	RR	RR	NNP
33912	475	4	.	.	.
33912	476	1	1868-	1868-	CD
33912	476	2	?	?	.
33912	477	1	Cape	Cape	NNP
33912	477	2	Fear	Fear	NNP
33912	477	3	,	,	,
33912	477	4	N.C.	North Carolina	NNP
33912	477	5	,	,	,
33912	477	6	Bollman	Bollman	NNP
33912	477	7	2/146'6	2/146'6	CD
33912	477	8	"	"	``
33912	477	9	Wilmington	Wilmington	NNP
33912	477	10	Railway	Railway	NNP
33912	477	11	Bridge	Bridge	NNP
33912	477	12	Northeast	Northeast	NNP
33912	477	13	Branch	Branch	NNP
33912	477	14	,	,	,
33912	477	15	truss	truss	NN
33912	477	16	(	(	-LRB-
33912	477	17	?	?	.
33912	477	18	)	)	-RRB-
33912	478	1	1/164	1/164	LS
33912	478	2	'	'	''
33912	478	3	Co.	Co.	NNP
33912	479	1	This	this	DT
33912	479	2	bridge	bridge	NN
33912	479	3	was	be	VBD
33912	479	4	Cape	Cape	NNP
33912	479	5	Fear	Fear	NNP
33912	479	6	River	River	NNP
33912	479	7	pivot	pivot	NN
33912	479	8	connected	connect	VBN
33912	479	9	to	to	IN
33912	479	10	that	that	DT
33912	479	11	over	over	IN
33912	479	12	draw/150	draw/150	NNP
33912	479	13	'	'	''
33912	479	14	the	the	DT
33912	479	15	Northwest	Northwest	NNP
33912	479	16	Branch	Branch	NNP
33912	479	17	by	by	IN
33912	479	18	2	2	CD
33912	479	19	-	-	SYM
33912	479	20	1/2	1/2	CD
33912	479	21	miles	mile	NNS
33912	479	22	of	of	IN
33912	479	23	timber	timber	NN
33912	479	24	trestling	trestling	NN
33912	479	25	.	.	.
33912	480	1	Designed	design	VBN
33912	480	2	and	and	CC
33912	480	3	built	build	VBN
33912	480	4	by	by	IN
33912	480	5	Bollman	Bollman	NNP
33912	480	6	.	.	.
33912	481	1	1868-	1868-	CD
33912	481	2	?	?	.
33912	482	1	Cape	Cape	NNP
33912	482	2	Fear	Fear	NNP
33912	482	3	,	,	,
33912	482	4	N.C.	North Carolina	NNP
33912	482	5	,	,	,
33912	482	6	Bollman	Bollman	NNP
33912	482	7	1/217	1/217	-LRB-
33912	482	8	'	'	''
33912	482	9	(	(	-LRB-
33912	482	10	?	?	.
33912	482	11	)	)	-RRB-
33912	483	1	See	see	VB
33912	483	2	above	above	RB
33912	483	3	.	.	.
33912	484	1	Northwest	Northwest	NNP
33912	484	2	Branch	Branch	NNP
33912	484	3	,	,	,
33912	484	4	truss	truss	NN
33912	484	5	(	(	-LRB-
33912	484	6	?	?	.
33912	484	7	)	)	-RRB-
33912	485	1	pivot	pivot	VB
33912	485	2	Cape	Cape	NNP
33912	485	3	Fear	Fear	NNP
33912	485	4	River	River	NNP
33912	485	5	draw/150	draw/150	NNP
33912	485	6	'	'	POS
33912	485	7	1868-	1868-	CD
33912	485	8	?	?	.
33912	486	1	Quincy	Quincy	NNP
33912	486	2	,	,	,
33912	486	3	Ill.	Illinois	NNP
33912	486	4	,	,	,
33912	486	5	Bollman	Bollman	NNP
33912	486	6	4/85	4/85	CD
33912	486	7	'	'	''
33912	486	8	Chicago	Chicago	NNP
33912	486	9	,	,	,
33912	486	10	Burlington	Burlington	NNP
33912	486	11	&	&	CC
33912	486	12	Quincy	Quincy	NNP
33912	486	13	Bay	Bay	NNP
33912	486	14	(	(	-LRB-
33912	486	15	in	in	IN
33912	486	16	deck	deck	NN
33912	486	17	pivot	pivot	NN
33912	486	18	Quincy	Quincy	NNP
33912	486	19	RR	RR	NNP
33912	486	20	.	.	.
33912	487	1	The	the	DT
33912	487	2	pivot	pivot	NN
33912	487	3	draw	draw	NN
33912	487	4	Mississippi	Mississippi	NNP
33912	487	5	River	River	NNP
33912	487	6	)	)	-RRB-
33912	487	7	truss	trus	VBZ
33912	487	8	draw/190	draw/190	NNP
33912	487	9	'	'	''
33912	487	10	was	be	VBD
33912	487	11	formed	form	VBN
33912	487	12	of	of	IN
33912	487	13	two	two	CD
33912	487	14	85-ft	85-ft	NNS
33912	487	15	.	.	.
33912	487	16	simple	simple	JJ
33912	487	17	Bollman	bollman	JJ
33912	487	18	deck	deck	NN
33912	487	19	spans	span	NNS
33912	487	20	whose	whose	WP$
33912	487	21	outer	outer	JJ
33912	487	22	ends	end	NNS
33912	487	23	hung	hang	VBD
33912	487	24	from	from	IN
33912	487	25	hog	hog	NN
33912	487	26	chains	chain	NNS
33912	487	27	.	.	.
33912	488	1	Designed	design	VBN
33912	488	2	by	by	IN
33912	488	3	Bollman	Bollman	NNP
33912	488	4	;	;	:
33912	488	5	built	build	VBN
33912	488	6	by	by	IN
33912	488	7	Detroit	Detroit	NNP
33912	488	8	Bridge	Bridge	NNP
33912	488	9	&	&	CC
33912	488	10	Iron	Iron	NNP
33912	488	11	Works	Works	NNP
33912	488	12	.	.	.
33912	489	1	1869-	1869-	CD
33912	489	2	Baltimore	Baltimore	NNP
33912	489	3	,	,	,
33912	489	4	Md.	Md.	NNP
33912	489	5	,	,	,
33912	489	6	Warren	Warren	NNP
33912	489	7	2/100	2/100	CD
33912	489	8	'	'	''
33912	489	9	North	North	NNP
33912	489	10	Avenue	Avenue	NNP
33912	489	11	Bridge	Bridge	NNP
33912	489	12	.	.	.
33912	490	1	c.1892	c.1892	VB
33912	490	2	over	over	IN
33912	490	3	Jones	Jones	NNP
33912	490	4	Falls	Falls	NNP
33912	490	5	,	,	,
33912	490	6	truss	truss	NN
33912	490	7	2/55'6	2/55'6	CD
33912	490	8	"	"	``
33912	490	9	Composite	composite	JJ
33912	490	10	double	double	JJ
33912	490	11	B.	b.	NN
33912	491	1	&	&	CC
33912	491	2	O.	O.	NNP
33912	492	1	RR	RR	NNP
33912	492	2	.	.	NNP
33912	492	3	,	,	,
33912	492	4	and	and	CC
33912	492	5	intersection	intersection	NN
33912	492	6	truss	truss	NN
33912	492	7	;	;	:
33912	492	8	Northern	northern	JJ
33912	492	9	Central	central	JJ
33912	492	10	timber	timber	NN
33912	492	11	top	top	JJ
33912	492	12	chord	chord	NN
33912	492	13	and	and	CC
33912	492	14	RR	rr	NN
33912	492	15	.	.	.
33912	493	1	posts	post	NNS
33912	493	2	,	,	,
33912	493	3	wrought	wrought	NN
33912	493	4	-	-	HYPH
33912	493	5	iron	iron	NN
33912	493	6	lower	low	JJR
33912	493	7	chord	chord	NN
33912	493	8	and	and	CC
33912	493	9	ties	tie	NNS
33912	493	10	.	.	.
33912	494	1	In	in	IN
33912	494	2	55-ft	55-ft	NNP
33912	494	3	.	.	.
33912	494	4	spans	span	NNS
33912	494	5	,	,	,
33912	494	6	both	both	DT
33912	494	7	chords	chord	NNS
33912	494	8	timber	timber	VBP
33912	494	9	.	.	.
33912	495	1	Cost	cost	NN
33912	495	2	,	,	,
33912	495	3	$	$	$
33912	495	4	73,588	73,588	CD
33912	495	5	.	.	.
33912	496	1	Built	build	VBN
33912	496	2	by	by	IN
33912	496	3	Bollman	Bollman	NNP
33912	496	4	.	.	.
33912	497	1	c.1869-	c.1869-	NNP
33912	497	2	Harpers	Harpers	NNP
33912	497	3	Ferry	Ferry	NNP
33912	497	4	,	,	,
33912	497	5	Va.	Virginia	NNP
33912	497	6	,	,	,
33912	497	7	Bollman	Bollman	NNP
33912	497	8	4/	4/	CD
33912	497	9	?	?	.
33912	498	1	Canal	canal	NN
33912	498	2	span	span	NN
33912	498	3	(	(	-LRB-
33912	498	4	no	no	UH
33912	498	5	.	.	.
33912	499	1	8)	8)	CD
33912	499	2	,	,	,
33912	499	3	Wide	wide	JJ
33912	499	4	1936	1936	CD
33912	499	5	Potomac	Potomac	NNP
33912	499	6	River	River	NNP
33912	499	7	through	through	IN
33912	499	8	span	span	NN
33912	499	9	(	(	-LRB-
33912	499	10	no	no	UH
33912	499	11	.	.	.
33912	500	1	2	2	LS
33912	500	2	)	)	-RRB-
33912	500	3	,	,	,
33912	500	4	Winchester	Winchester	NNP
33912	500	5	truss	truss	NN
33912	500	6	span	span	NN
33912	500	7	,	,	,
33912	500	8	and	and	CC
33912	500	9	West	West	NNP
33912	500	10	End	End	NNP
33912	500	11	span	span	NN
33912	500	12	.	.	.
33912	501	1	Destroyed	destroy	VBN
33912	501	2	by	by	IN
33912	501	3	flood	flood	NN
33912	501	4	in	in	IN
33912	501	5	1936	1936	CD
33912	501	6	.	.	.
33912	502	1	B.	B.	NNP
33912	503	1	&	&	CC
33912	503	2	O.	O.	NNP
33912	503	3	RR	RR	NNP
33912	503	4	.	.	.
33912	504	1	1870-	1870-	CD
33912	504	2	Baltimore	Baltimore	NNP
33912	504	3	,	,	,
33912	504	4	Md.	Md.	NNP
33912	504	5	,	,	,
33912	504	6	Iron	Iron	NNP
33912	504	7	1/108	1/108	NNP
33912	504	8	'	'	''
33912	504	9	Charles	Charles	NNP
33912	504	10	Street	Street	NNP
33912	504	11	Bridge	Bridge	NNP
33912	504	12	.	.	.
33912	505	1	c.1895	c.1895	NNP
33912	505	2	Jones	Jones	NNP
33912	505	3	Falls	Falls	NNP
33912	505	4	"	"	``
33912	505	5	Isometrical	Isometrical	NNP
33912	505	6	Three	three	CD
33912	505	7	lines	line	NNS
33912	505	8	of	of	IN
33912	505	9	trussing	truss	VBG
33912	505	10	.	.	.
33912	506	1	truss	truss	NNP
33912	506	2	"	"	``
33912	506	3	Cost	cost	NN
33912	506	4	,	,	,
33912	506	5	$	$	$
33912	506	6	20,297	20,297	CD
33912	506	7	.	.	.
33912	507	1	Built	build	VBN
33912	507	2	by	by	IN
33912	507	3	(	(	-LRB-
33912	507	4	probably	probably	RB
33912	507	5	Bollman	Bollman	NNP
33912	507	6	.	.	.
33912	508	1	Pratt	Pratt	JJR
33912	508	2	type	type	NN
33912	508	3	)	)	-RRB-
33912	508	4	1870-	1870-	CD
33912	508	5	Bellaire	Bellaire	NNP
33912	508	6	,	,	,
33912	508	7	Ohio-	Ohio-	NNP
33912	508	8	Bollman	Bollman	NNP
33912	508	9	9/107'-	9/107'-	CD
33912	508	10	In	in	IN
33912	508	11	approaches	approach	NNS
33912	508	12	;	;	:
33912	508	13	2	2	CD
33912	508	14	spans	span	NNS
33912	508	15	on	on	IN
33912	508	16	1893	1893	CD
33912	508	17	&	&	CC
33912	508	18	Benwood	Benwood	NNP
33912	508	19	W.	W.	NNP
33912	508	20	Va.	Virginia	NNP
33912	508	21	,	,	,
33912	508	22	deck	deck	NN
33912	508	23	125	125	CD
33912	508	24	'	'	POS
33912	508	25	Ohio	Ohio	NNP
33912	508	26	side	side	NN
33912	508	27	;	;	:
33912	508	28	7	7	CD
33912	508	29	on	on	IN
33912	508	30	West	West	NNP
33912	508	31	1900	1900	CD
33912	508	32	Ohio	Ohio	NNP
33912	508	33	River	River	NNP
33912	508	34	truss	truss	NN
33912	508	35	Virginia	Virginia	NNP
33912	508	36	side	side	NN
33912	508	37	.	.	.
33912	509	1	B.	B.	NNP
33912	510	1	&	&	CC
33912	510	2	O.	O.	NNP
33912	510	3	RR	RR	NNP
33912	510	4	.	.	.
33912	511	1	1870-	1870-	CD
33912	511	2	Belpre	Belpre	NNP
33912	511	3	,	,	,
33912	511	4	Ohio-	Ohio-	NNP
33912	511	5	Bollman	Bollman	NNP
33912	511	6	16/	16/	CD
33912	511	7	?	?	.
33912	512	1	In	in	IN
33912	512	2	approaches	approach	NNS
33912	512	3	;	;	:
33912	512	4	7	7	CD
33912	512	5	spans	span	NNS
33912	512	6	on	on	IN
33912	512	7	c.1895	c.1895	NNP
33912	512	8	Parkersburg	Parkersburg	NNP
33912	512	9	,	,	,
33912	512	10	W.	W.	NNP
33912	512	11	deck	deck	NN
33912	512	12	Ohio	Ohio	NNP
33912	512	13	side	side	NN
33912	512	14	;	;	:
33912	512	15	9	9	CD
33912	512	16	on	on	IN
33912	512	17	West	West	NNP
33912	512	18	Va.	Virginia	NNP
33912	512	19	,	,	,
33912	512	20	Ohio	Ohio	NNP
33912	512	21	River	River	NNP
33912	512	22	truss	truss	NN
33912	512	23	Virginia	Virginia	NNP
33912	512	24	side	side	NN
33912	512	25	.	.	.
33912	513	1	B.	B.	NNP
33912	514	1	&	&	CC
33912	514	2	O.	O.	NNP
33912	514	3	RR	RR	NNP
33912	514	4	.	.	.
33912	515	1	1870-	1870-	CD
33912	515	2	?	?	.
33912	516	1	Elysville	Elysville	NNP
33912	516	2	,	,	,
33912	516	3	Md.	Md.	NNP
33912	516	4	,	,	,
33912	516	5	Bollman	Bollman	NNP
33912	516	6	4/	4/	CD
33912	516	7	?	?	.
33912	517	1	Skew	skew	JJ
33912	517	2	;	;	:
33912	517	3	replacement	replacement	NN
33912	517	4	of	of	IN
33912	517	5	Patapsco	Patapsco	NNP
33912	517	6	River	River	NNP
33912	517	7	through	through	IN
33912	517	8	Upper	Upper	NNP
33912	517	9	Bridge	Bridge	NNP
33912	517	10	(	(	-LRB-
33912	517	11	?	?	.
33912	517	12	)	)	-RRB-
33912	517	13	.	.	.
33912	518	1	B.	B.	NNP
33912	519	1	&	&	CC
33912	519	2	O.	O.	NNP
33912	519	3	truss	truss	NN
33912	519	4	RR	RR	NNP
33912	519	5	.	.	.
33912	520	1	1871-	1871-	CD
33912	520	2	Baltimore	Baltimore	NNP
33912	520	3	,	,	,
33912	520	4	Md.	Md.	NNP
33912	520	5	,	,	,
33912	520	6	Timber	Timber	NNP
33912	520	7	?	?	.
33912	521	1	Decker	Decker	NNP
33912	521	2	Street	Street	NNP
33912	521	3	(	(	-LRB-
33912	521	4	now	now	RB
33912	521	5	c.1895	c.1895	NNP
33912	521	6	Jones	Jones	NNP
33912	521	7	Falls	Falls	NNP
33912	521	8	and	and	CC
33912	521	9	iron	iron	NN
33912	521	10	Maryland	Maryland	NNP
33912	521	11	Avenue	Avenue	NNP
33912	521	12	)	)	-RRB-
33912	521	13	Bridge	Bridge	NNP
33912	521	14	.	.	.
33912	522	1	truss	truss	NNP
33912	522	2	Cost	Cost	NNP
33912	522	3	,	,	,
33912	522	4	$	$	$
33912	522	5	24,975	24,975	CD
33912	522	6	.	.	.
33912	523	1	Built	build	VBN
33912	523	2	by	by	IN
33912	523	3	Bollman	Bollman	NNP
33912	523	4	.	.	.
33912	524	1	1871-	1871-	CD
33912	524	2	Baltimore	Baltimore	NNP
33912	524	3	,	,	,
33912	524	4	Md.	Md.	NNP
33912	524	5	,	,	,
33912	524	6	Warren	Warren	NNP
33912	524	7	1/100	1/100	CD
33912	524	8	'	'	''
33912	524	9	North	North	NNP
33912	524	10	Avenue	Avenue	NNP
33912	524	11	Bridge	Bridge	NNP
33912	524	12	.	.	.
33912	525	1	c.1892	c.1892	VB
33912	525	2	over	over	IN
33912	525	3	Northern	northern	JJ
33912	525	4	truss	truss	NN
33912	525	5	Composite	Composite	NNP
33912	525	6	double	double	JJ
33912	525	7	Central	central	JJ
33912	525	8	RR	rr	NN
33912	525	9	.	.	.
33912	526	1	at	at	IN
33912	526	2	intersection	intersection	NN
33912	526	3	truss	truss	NN
33912	526	4	;	;	:
33912	526	5	Jones	Jones	NNP
33912	526	6	Falls	Falls	NNP
33912	526	7	cast	cast	NN
33912	526	8	-	-	HYPH
33912	526	9	iron	iron	NN
33912	526	10	top	top	JJ
33912	526	11	chord	chord	NN
33912	526	12	and	and	CC
33912	526	13	posts	post	NNS
33912	526	14	;	;	,
33912	526	15	wrought	wrought	NN
33912	526	16	-	-	HYPH
33912	526	17	iron	iron	NN
33912	526	18	bottom	bottom	NN
33912	526	19	chord	chord	NN
33912	526	20	and	and	CC
33912	526	21	ties	tie	NNS
33912	526	22	.	.	.
33912	527	1	West	West	NNP
33912	527	2	span	span	NNP
33912	527	3	.	.	.
33912	528	1	Built	build	VBN
33912	528	2	by	by	IN
33912	528	3	Bollman	Bollman	NNP
33912	528	4	.	.	.
33912	529	1	1873	1873	CD
33912	529	2	-	-	SYM
33912	529	3	1923	1923	CD
33912	529	4	Cave	Cave	NNP
33912	529	5	Station	Station	NNP
33912	529	6	,	,	,
33912	529	7	Va.	Virginia	NNP
33912	529	8	,	,	,
33912	529	9	Bollman	Bollman	NNP
33912	529	10	1/98'7	1/98'7	CD
33912	529	11	"	"	``
33912	529	12	Valley	Valley	NNP
33912	529	13	Railroad	Railroad	NNP
33912	529	14	of	of	IN
33912	529	15	Middle	Middle	NNP
33912	529	16	River	River	NNP
33912	529	17	deck	deck	NN
33912	529	18	1/63'5	1/63'5	NNP
33912	529	19	"	"	''
33912	529	20	Virginia	Virginia	NNP
33912	529	21	(	(	-LRB-
33912	529	22	B.	B.	NNP
33912	530	1	&	&	CC
33912	530	2	O.	O.	NNP
33912	530	3	)	)	-RRB-
33912	531	1	Bridge	Bridge	NNP
33912	531	2	truss	truss	NN
33912	531	3	no	no	UH
33912	531	4	.	.	.
33912	532	1	120	120	CD
33912	532	2	.	.	.
33912	533	1	The	the	DT
33912	533	2	main	main	JJ
33912	533	3	span	span	NN
33912	533	4	was	be	VBD
33912	533	5	a	a	DT
33912	533	6	Whipple	Whipple	NNP
33912	533	7	deck	deck	NN
33912	533	8	truss	truss	NN
33912	533	9	.	.	.
33912	534	1	Replaced	replace	VBN
33912	534	2	with	with	IN
33912	534	3	plate	plate	NN
33912	534	4	girders	girder	NNS
33912	534	5	.	.	.
33912	535	1	Designed	design	VBN
33912	535	2	by	by	IN
33912	535	3	Bollman	Bollman	NNP
33912	535	4	.	.	.
33912	536	1	1873	1873	CD
33912	536	2	-	-	SYM
33912	536	3	1923	1923	CD
33912	536	4	Mount	Mount	NNP
33912	536	5	Crawford	Crawford	NNP
33912	536	6	,	,	,
33912	536	7	Bollman	Bollman	NNP
33912	536	8	2/98'6	2/98'6	CD
33912	536	9	"	"	``
33912	536	10	Valley	Valley	NNP
33912	536	11	Railroad	Railroad	NNP
33912	536	12	of	of	IN
33912	536	13	Va.	Virginia	NNP
33912	536	14	,	,	,
33912	536	15	North	North	NNP
33912	536	16	River	River	NNP
33912	536	17	deck	deck	NN
33912	536	18	1/148'9	1/148'9	CD
33912	536	19	"	"	''
33912	536	20	Virginia	Virginia	NNP
33912	536	21	(	(	-LRB-
33912	536	22	B.	B.	NNP
33912	537	1	&	&	CC
33912	537	2	O.	O.	NNP
33912	537	3	)	)	-RRB-
33912	538	1	Bridge	Bridge	NNP
33912	538	2	truss	truss	NN
33912	538	3	no	no	UH
33912	538	4	.	.	.
33912	539	1	117	117	CD
33912	539	2	.	.	.
33912	540	1	Designed	design	VBN
33912	540	2	by	by	IN
33912	540	3	Bollman	Bollman	NNP
33912	540	4	.	.	.
33912	541	1	1873	1873	CD
33912	541	2	-	-	SYM
33912	541	3	1923	1923	CD
33912	541	4	Verona	Verona	NNP
33912	541	5	,	,	,
33912	541	6	Va.	Virginia	NNP
33912	541	7	,	,	,
33912	541	8	North	North	NNP
33912	541	9	Bollman	Bollman	NNP
33912	541	10	3/98'7	3/98'7	NNP
33912	541	11	"	"	``
33912	541	12	Valley	Valley	NNP
33912	541	13	Railroad	Railroad	NNP
33912	541	14	of	of	IN
33912	541	15	River	River	NNP
33912	541	16	deck	deck	NN
33912	541	17	Virginia	Virginia	NNP
33912	541	18	(	(	-LRB-
33912	541	19	B.	B.	NNP
33912	542	1	&	&	CC
33912	542	2	O.	O.	NNP
33912	542	3	)	)	-RRB-
33912	543	1	Bridge	Bridge	NNP
33912	543	2	truss	truss	NN
33912	543	3	no	no	UH
33912	543	4	.	.	.
33912	544	1	129	129	CD
33912	544	2	.	.	.
33912	545	1	The	the	DT
33912	545	2	main	main	JJ
33912	545	3	span	span	NN
33912	545	4	was	be	VBD
33912	545	5	a	a	DT
33912	545	6	147-ft	147-ft	CD
33912	545	7	.	.	.
33912	545	8	Whipple	whipple	NN
33912	545	9	deck	deck	NN
33912	545	10	truss	truss	NN
33912	545	11	.	.	.
33912	546	1	Designed	design	VBN
33912	546	2	by	by	IN
33912	546	3	Bollman	Bollman	NNP
33912	546	4	.	.	.
33912	547	1	1873-	1873-	LS
33912	547	2	?	?	.
33912	548	1	Wadesville	Wadesville	NNP
33912	548	2	,	,	,
33912	548	3	Va.	Virginia	NNP
33912	548	4	,	,	,
33912	548	5	Bollman	Bollman	NNP
33912	548	6	1/147'8	1/147'8	VBZ
33912	548	7	"	"	``
33912	548	8	Span	Span	NNP
33912	548	9	length	length	NN
33912	548	10	given	give	VBN
33912	548	11	is	be	VBZ
33912	548	12	that	that	IN
33912	548	13	Opequon	Opequon	NNP
33912	548	14	Creek	Creek	NNP
33912	548	15	through	through	IN
33912	548	16	of	of	IN
33912	548	17	previous	previous	JJ
33912	548	18	wood	wood	NN
33912	548	19	span	span	NN
33912	548	20	truss	truss	NN
33912	548	21	that	that	WDT
33912	548	22	burned	burn	VBD
33912	548	23	in	in	IN
33912	548	24	1862	1862	CD
33912	548	25	.	.	.
33912	549	1	B.	B.	NNP
33912	550	1	&	&	CC
33912	550	2	O.	O.	NNP
33912	550	3	RR	RR	NNP
33912	550	4	.	.	.
33912	551	1	c.	c.	NNP
33912	551	2	1873-	1873-	CD
33912	551	3	Baltimore	Baltimore	NNP
33912	551	4	,	,	,
33912	551	5	Md.	Md.	NNP
33912	552	1	Iron	iron	NN
33912	552	2	roof	roof	NN
33912	552	3	?	?	.
33912	553	1	First	first	JJ
33912	553	2	Presbyterian	presbyterian	JJ
33912	553	3	trusses	truss	NNS
33912	553	4	Church	Church	NNP
33912	553	5	.	.	.
33912	554	1	Built	build	VBN
33912	554	2	by	by	IN
33912	554	3	Bollman	Bollman	NNP
33912	554	4	;	;	:
33912	554	5	possibly	possibly	RB
33912	554	6	designed	design	VBN
33912	554	7	by	by	IN
33912	554	8	him	-PRON-	PRP
33912	554	9	.	.	.
33912	555	1	1873-	1873-	CD
33912	555	2	Baltimore	Baltimore	NNP
33912	555	3	,	,	,
33912	555	4	Md.	Md.	NNP
33912	556	1	Cast	cast	NN
33912	556	2	-	-	HYPH
33912	556	3	iron	iron	NN
33912	556	4	City	City	NNP
33912	556	5	Hall	Hall	NNP
33912	556	6	.	.	.
33912	557	1	Cost	cost	NN
33912	557	2	,	,	,
33912	557	3	$	$	$
33912	557	4	12,840	12,840	CD
33912	557	5	.	.	.
33912	558	1	stairs	stair	NNS
33912	558	2	Designed	design	VBN
33912	558	3	by	by	IN
33912	558	4	George	George	NNP
33912	558	5	A.	A.	NNP
33912	558	6	Frederick	Frederick	NNP
33912	558	7	,	,	,
33912	558	8	architect	architect	NN
33912	558	9	;	;	,
33912	558	10	built	build	VBN
33912	558	11	by	by	IN
33912	558	12	Bollman	Bollman	NNP
33912	558	13	.	.	.
33912	559	1	1873-	1873-	CD
33912	559	2	Baltimore	Baltimore	NNP
33912	559	3	,	,	,
33912	559	4	Md.	Md.	NNP
33912	560	1	Cast	cast	NN
33912	560	2	-	-	HYPH
33912	560	3	iron	iron	NN
33912	560	4	Dome	Dome	NNP
33912	560	5	of	of	IN
33912	560	6	the	the	DT
33912	560	7	City	City	NNP
33912	560	8	Hall	Hall	NNP
33912	560	9	.	.	.
33912	561	1	framework	framework	NN
33912	561	2	Cost	cost	NN
33912	561	3	,	,	,
33912	561	4	$	$	$
33912	561	5	70,525	70,525	CD
33912	561	6	.	.	.
33912	562	1	Designed	design	VBN
33912	562	2	by	by	IN
33912	562	3	George	George	NNP
33912	562	4	A.	A.	NNP
33912	562	5	Frederick	Frederick	NNP
33912	562	6	;	;	:
33912	562	7	built	build	VBN
33912	562	8	by	by	IN
33912	562	9	Bollman	Bollman	NNP
33912	562	10	.	.	.
33912	563	1	1875-	1875-	CD
33912	563	2	Baltimore	Baltimore	NNP
33912	563	3	,	,	,
33912	563	4	Md.	Md.	NNP
33912	563	5	,	,	,
33912	563	6	Iron	Iron	NNP
33912	563	7	truss	truss	NN
33912	563	8	1/	1/	CD
33912	563	9	?	?	.
33912	564	1	Fayette	Fayette	NNP
33912	564	2	Street	Street	NNP
33912	564	3	Bridge	Bridge	NNP
33912	564	4	.	.	.
33912	565	1	c.1913	c.1913	ADD
33912	565	2	Jones	Jones	NNP
33912	565	3	Falls	Falls	NNP
33912	565	4	Cost	Cost	NNP
33912	565	5	,	,	,
33912	565	6	$	$	$
33912	565	7	9,396	9,396	CD
33912	565	8	.	.	.
33912	566	1	Built	build	VBN
33912	566	2	by	by	IN
33912	566	3	Bollman	Bollman	NNP
33912	566	4	.	.	.
33912	567	1	1876-	1876-	CD
33912	567	2	Baltimore	Baltimore	NNP
33912	567	3	,	,	,
33912	567	4	Md.	Md.	NNP
33912	567	5	,	,	,
33912	567	6	"	"	``
33912	567	7	Single-	Single-	NNP
33912	567	8	1/	1/	CD
33912	567	9	?	?	.
33912	568	1	Canton	Canton	NNP
33912	568	2	Avenue	Avenue	NNP
33912	568	3	(	(	-LRB-
33912	568	4	now	now	RB
33912	568	5	Fleet	Fleet	NNP
33912	568	6	c.1913	c.1913	NNP
33912	568	7	Jones	Jones	NNP
33912	568	8	Falls	Falls	NNP
33912	568	9	beam	beam	NN
33912	568	10	iron	iron	NN
33912	568	11	Street	Street	NNP
33912	568	12	)	)	-RRB-
33912	568	13	Bridge	Bridge	NNP
33912	568	14	.	.	.
33912	569	1	Cost	cost	NN
33912	569	2	,	,	,
33912	569	3	bridge	bridge	NN
33912	569	4	"	"	''
33912	569	5	$	$	$
33912	569	6	8,904	8,904	CD
33912	569	7	.	.	.
33912	570	1	Built	build	VBN
33912	570	2	by	by	IN
33912	570	3	Bollman	Bollman	NNP
33912	570	4	.	.	.
33912	571	1	(	(	-LRB-
33912	571	2	truss	truss	NNP
33912	571	3	?	?	.
33912	571	4	)	)	-RRB-
33912	572	1	1876-	1876-	CD
33912	572	2	Baltimore	Baltimore	NNP
33912	572	3	,	,	,
33912	572	4	Md.	Md.	NNP
33912	572	5	,	,	,
33912	572	6	"	"	``
33912	572	7	Single-	Single-	NNP
33912	572	8	1/	1/	CD
33912	572	9	?	?	.
33912	573	1	Eastern	Eastern	NNP
33912	573	2	Avenue	Avenue	NNP
33912	573	3	Bridge	Bridge	NNP
33912	573	4	.	.	.
33912	574	1	c.1913	c.1913	ADD
33912	574	2	Jones	Jones	NNP
33912	574	3	Falls	Falls	NNP
33912	574	4	beam	beam	NN
33912	574	5	iron	iron	NN
33912	574	6	Cost	cost	NN
33912	574	7	,	,	,
33912	574	8	$	$	$
33912	574	9	12,382	12,382	CD
33912	574	10	.	.	.
33912	575	1	Built	build	VBN
33912	575	2	by	by	IN
33912	575	3	bridge	bridge	NN
33912	575	4	"	"	``
33912	575	5	Bollman	Bollman	NNP
33912	575	6	.	.	.
33912	576	1	(	(	-LRB-
33912	576	2	truss	truss	NNP
33912	576	3	?	?	.
33912	576	4	)	)	-RRB-
33912	577	1	1877-	1877-	CD
33912	577	2	Baltimore	Baltimore	NNP
33912	577	3	,	,	,
33912	577	4	Md.	Md.	NNP
33912	577	5	,	,	,
33912	577	6	Pratt	Pratt	NNP
33912	577	7	and	and	CC
33912	577	8	1/88'6	1/88'6	CD
33912	577	9	"	"	''
33912	577	10	Lombard	Lombard	NNP
33912	577	11	Street	Street	NNP
33912	577	12	Bridge	Bridge	NNP
33912	577	13	.	.	.
33912	578	1	Jones	Jones	NNP
33912	578	2	Falls	Falls	NNP
33912	578	3	bowstring	bowstre	VBG
33912	578	4	Three	three	CD
33912	578	5	lines	line	NNS
33912	578	6	of	of	IN
33912	578	7	truss	truss	NN
33912	578	8	;	;	:
33912	578	9	truss	truss	NNP
33912	578	10	two	two	CD
33912	578	11	outer	outer	JJ
33912	578	12	trusses	truss	NNS
33912	578	13	,	,	,
33912	578	14	composite	composite	JJ
33912	578	15	cast-	cast-	NN
33912	578	16	and	and	CC
33912	578	17	wrought	wrought	NN
33912	578	18	-	-	HYPH
33912	578	19	iron	iron	NN
33912	578	20	polygonal	polygonal	NN
33912	578	21	Pratt	Pratt	NNP
33912	578	22	type	type	NN
33912	578	23	;	;	:
33912	578	24	center	center	NN
33912	578	25	composite	composite	JJ
33912	578	26	bowstring	bowstre	VBG
33912	578	27	with	with	IN
33912	578	28	Pratt	Pratt	NNP
33912	578	29	-	-	HYPH
33912	578	30	system	system	NN
33912	578	31	web	web	NN
33912	578	32	.	.	.
33912	579	1	Both	both	DT
33912	579	2	chords	chord	NNS
33912	579	3	are	be	VBP
33912	579	4	cast	cast	VBN
33912	579	5	-	-	HYPH
33912	579	6	iron	iron	NN
33912	579	7	water	water	NN
33912	579	8	mains	main	NNS
33912	579	9	,	,	,
33912	579	10	bifurcated	bifurcate	VBN
33912	579	11	at	at	IN
33912	579	12	the	the	DT
33912	579	13	end	end	NN
33912	579	14	bearings	bearing	NNS
33912	579	15	;	;	:
33912	579	16	cast	cast	NN
33912	579	17	-	-	HYPH
33912	579	18	iron	iron	NN
33912	579	19	posts	post	NNS
33912	579	20	and	and	CC
33912	579	21	wrought	wrought	NN
33912	579	22	-	-	HYPH
33912	579	23	iron	iron	NN
33912	579	24	ties	tie	NNS
33912	579	25	.	.	.
33912	580	1	In	in	IN
33912	580	2	service	service	NN
33912	580	3	.	.	.
33912	581	1	Cost	cost	NN
33912	581	2	,	,	,
33912	581	3	$	$	$
33912	581	4	7,632	7,632	CD
33912	581	5	.	.	.
33912	582	1	Designed	design	VBN
33912	582	2	by	by	IN
33912	582	3	Jas	Jas	NNP
33912	582	4	.	.	.
33912	583	1	Curran	Curran	NNP
33912	583	2	,	,	,
33912	583	3	Baltimore	Baltimore	NNP
33912	583	4	water	water	NN
33912	583	5	department	department	NN
33912	583	6	;	;	:
33912	583	7	built	build	VBN
33912	583	8	by	by	IN
33912	583	9	Bollman	Bollman	NNP
33912	583	10	.	.	.
33912	584	1	1877-	1877-	CD
33912	584	2	Baltimore	Baltimore	NNP
33912	584	3	,	,	,
33912	584	4	Md.	Md.	NNP
33912	584	5	,	,	,
33912	584	6	Iron	Iron	NNP
33912	584	7	truss	truss	NN
33912	584	8	1/	1/	CD
33912	584	9	?	?	.
33912	585	1	Bath	Bath	NNP
33912	585	2	Street	Street	NNP
33912	585	3	Bridge	Bridge	NNP
33912	585	4	.	.	.
33912	586	1	Cost	cost	NN
33912	586	2	,	,	,
33912	586	3	c.1913	c.1913	NNP
33912	586	4	Jones	Jones	NNP
33912	586	5	Falls	Falls	NNP
33912	586	6	$	$	$
33912	586	7	4,172	4,172	CD
33912	586	8	.	.	.
33912	587	1	Built	build	VBN
33912	587	2	by	by	IN
33912	587	3	Bollman	Bollman	NNP
33912	587	4	.	.	.
33912	588	1	1879-	1879-	CD
33912	588	2	?	?	.
33912	589	1	Baltimore	Baltimore	NNP
33912	589	2	,	,	,
33912	589	3	Md.	Md.	NNP
33912	590	1	Drawbridge	Drawbridge	NNP
33912	590	2	1/	1/	CD
33912	590	3	?	?	.
33912	591	1	Over	over	IN
33912	591	2	entrance	entrance	NN
33912	591	3	to	to	IN
33912	591	4	City	City	NNP
33912	591	5	Dock	Dock	NNP
33912	591	6	.	.	.
33912	592	1	Cost	cost	NN
33912	592	2	,	,	,
33912	592	3	$	$	$
33912	592	4	13,182	13,182	CD
33912	592	5	.	.	.
33912	593	1	Built	build	VBN
33912	593	2	by	by	IN
33912	593	3	Bollman	Bollman	NNP
33912	593	4	.	.	.
33912	594	1	1879-	1879-	CD
33912	594	2	Baltimore	Baltimore	NNP
33912	594	3	,	,	,
33912	594	4	Md.	Md.	NNP
33912	594	5	,	,	,
33912	594	6	Warren	Warren	NNP
33912	594	7	2/173'9	2/173'9	CD
33912	594	8	"	"	``
33912	594	9	North	North	NNP
33912	594	10	Street	Street	NNP
33912	594	11	(	(	-LRB-
33912	594	12	now	now	RB
33912	594	13	c.1930	c.1930	VBN
33912	594	14	over	over	IN
33912	594	15	Jones	Jones	NNP
33912	594	16	Falls	Falls	NNP
33912	594	17	truss	truss	NN
33912	594	18	Guilford	Guilford	NNP
33912	594	19	Avenue	Avenue	NNP
33912	594	20	)	)	-RRB-
33912	594	21	Bridge	Bridge	NNP
33912	594	22	.	.	.
33912	595	1	and	and	CC
33912	595	2	railroad	railroad	NN
33912	595	3	Composite	composite	JJ
33912	595	4	trusses	truss	NNS
33912	595	5	;	;	:
33912	595	6	tracks	track	NNS
33912	595	7	cast	cast	NN
33912	595	8	-	-	HYPH
33912	595	9	iron	iron	NN
33912	595	10	top	top	JJ
33912	595	11	chord	chord	NN
33912	595	12	and	and	CC
33912	595	13	end	end	NN
33912	595	14	posts	post	NNS
33912	595	15	;	;	:
33912	595	16	wrought	wrought	NN
33912	595	17	-	-	HYPH
33912	595	18	iron	iron	NN
33912	595	19	bottom	bottom	NN
33912	595	20	chord	chord	NN
33912	595	21	and	and	CC
33912	595	22	web	web	NN
33912	595	23	members	member	NNS
33912	595	24	.	.	.
33912	596	1	Cost	cost	NN
33912	596	2	,	,	,
33912	596	3	$	$	$
33912	596	4	38,772.45	38,772.45	CD
33912	596	5	.	.	.
33912	597	1	Built	build	VBN
33912	597	2	by	by	IN
33912	597	3	Bollman	Bollman	NNP
33912	597	4	;	;	:
33912	597	5	designed	design	VBN
33912	597	6	by	by	IN
33912	597	7	Latrobe	Latrobe	NNP
33912	597	8	.	.	.
33912	598	1	1881	1881	CD
33912	598	2	-	-	SYM
33912	598	3	1960	1960	CD
33912	598	4	Baltimore	Baltimore	NNP
33912	598	5	,	,	,
33912	598	6	Md.	Md.	NNP
33912	598	7	,	,	,
33912	598	8	Wrought-	Wrought-	NNP
33912	598	9	1/	1/	CD
33912	598	10	?	?	.
33912	599	1	Union	Union	NNP
33912	599	2	Avenue	Avenue	NNP
33912	599	3	Bridge	Bridge	NNP
33912	599	4	.	.	.
33912	600	1	(	(	-LRB-
33912	600	2	Woodberry	Woodberry	NNP
33912	600	3	)	)	-RRB-
33912	600	4	,	,	,
33912	600	5	iron	iron	NN
33912	600	6	Pratt	Pratt	NNP
33912	600	7	Built	build	VBN
33912	600	8	by	by	IN
33912	600	9	Bollman	Bollman	NNP
33912	600	10	;	;	:
33912	600	11	Jones	Jones	NNP
33912	600	12	Falls	Falls	NNP
33912	600	13	truss	truss	NN
33912	600	14	possibly	possibly	RB
33912	600	15	designed	design	VBN
33912	600	16	by	by	IN
33912	600	17	him	-PRON-	PRP
33912	600	18	.	.	.
33912	601	1	?	?	NFP
33912	601	2	-	-	:
33912	601	3	?	?	.
33912	602	1	Harpers	Harpers	NNP
33912	602	2	Ferry	Ferry	NNP
33912	602	3	,	,	,
33912	602	4	Va.	Virginia	NNP
33912	602	5	,	,	,
33912	602	6	Bollman	Bollman	NNP
33912	602	7	1/148	1/148	NNP
33912	602	8	'	'	''
33912	602	9	Arsenal	Arsenal	NNP
33912	602	10	Branch	Branch	NNP
33912	602	11	,	,	,
33912	602	12	B.	B.	NNP
33912	603	1	&	&	CC
33912	603	2	O.	O.	NNP
33912	604	1	Arsenal	Arsenal	NNP
33912	604	2	Canal	Canal	NNP
33912	604	3	through	through	IN
33912	604	4	RR	RR	NNP
33912	604	5	.	.	.
33912	605	1	Skew	skew	JJ
33912	605	2	type	type	NN
33912	605	3	.	.	.
33912	606	1	Span	span	VB
33912	606	2	truss	truss	NN
33912	606	3	length	length	NN
33912	606	4	is	be	VBZ
33912	606	5	that	that	DT
33912	606	6	of	of	IN
33912	606	7	previous	previous	JJ
33912	606	8	timber	timber	NN
33912	606	9	span	span	NN
33912	606	10	.	.	.
33912	607	1	?	?	NFP
33912	607	2	-	-	:
33912	607	3	?	?	.
33912	608	1	Baltimore	Baltimore	NNP
33912	608	2	,	,	,
33912	608	3	Md.	Md.	NNP
33912	608	4	,	,	,
33912	608	5	Bollman	Bollman	NNP
33912	608	6	2/	2/	CD
33912	608	7	?	?	.
33912	609	1	B.	B.	NNP
33912	610	1	&	&	CC
33912	610	2	O.	O.	NNP
33912	610	3	RR	RR	NNP
33912	610	4	.	.	.
33912	611	1	Gwynns	Gwynns	NNP
33912	611	2	Falls	Falls	NNP
33912	611	3	through	through	IN
33912	611	4	truss	truss	NN
33912	611	5	BIBLIOGRAPHY	BIBLIOGRAPHY	NNP
33912	611	6	_	_	NNP
33912	611	7	A	a	DT
33912	611	8	history	history	NN
33912	611	9	and	and	CC
33912	611	10	description	description	NN
33912	611	11	of	of	IN
33912	611	12	the	the	DT
33912	611	13	Baltimore	Baltimore	NNP
33912	611	14	and	and	CC
33912	611	15	Ohio	Ohio	NNP
33912	611	16	Railroad	Railroad	NNP
33912	611	17	by	by	IN
33912	611	18	a	a	DT
33912	611	19	citizen	citizen	NN
33912	611	20	of	of	IN
33912	611	21	Baltimore	Baltimore	NNP
33912	611	22	.	.	.
33912	611	23	_	_	NNP
33912	611	24	Baltimore	Baltimore	NNP
33912	611	25	,	,	,
33912	611	26	1853	1853	CD
33912	611	27	.	.	.
33912	612	1	Baltimore	Baltimore	NNP
33912	612	2	and	and	CC
33912	612	3	Ohio	Ohio	NNP
33912	612	4	Railroad	Railroad	NNP
33912	612	5	Company	Company	NNP
33912	612	6	.	.	.
33912	613	1	_	_	NNP
33912	613	2	A	a	DT
33912	613	3	list	list	NN
33912	613	4	of	of	IN
33912	613	5	the	the	DT
33912	613	6	officers	officer	NNS
33912	613	7	and	and	CC
33912	613	8	employees	employee	NNS
33912	613	9	of	of	IN
33912	613	10	the	the	DT
33912	613	11	Baltimore	Baltimore	NNP
33912	613	12	and	and	CC
33912	613	13	Ohio	Ohio	NNP
33912	613	14	Railroad	Railroad	NNP
33912	613	15	for	for	IN
33912	613	16	November	November	NNP
33912	613	17	,	,	,
33912	613	18	1857	1857	CD
33912	613	19	.	.	.
33912	613	20	_	_	NNP
33912	613	21	Baltimore	Baltimore	NNP
33912	613	22	,	,	,
33912	613	23	1857	1857	CD
33912	613	24	.	.	.
33912	614	1	----	----	NFP
33912	614	2	.	.	.
33912	615	1	_	_	NNP
33912	615	2	Third	third	JJ
33912	615	3	annual	annual	JJ
33912	615	4	report	report	NN
33912	615	5	of	of	IN
33912	615	6	the	the	DT
33912	615	7	president	president	NN
33912	615	8	and	and	CC
33912	615	9	directors	director	NNS
33912	615	10	to	to	IN
33912	615	11	the	the	DT
33912	615	12	stockholders	stockholder	NNS
33912	615	13	of	of	IN
33912	615	14	the	the	DT
33912	615	15	Baltimore	Baltimore	NNP
33912	615	16	and	and	CC
33912	615	17	Ohio	Ohio	NNP
33912	615	18	Rail	Rail	NNP
33912	615	19	Road	Road	NNP
33912	615	20	Company	Company	NNP
33912	615	21	.	.	.
33912	615	22	_	_	NNP
33912	615	23	Baltimore	Baltimore	NNP
33912	615	24	:	:	:
33912	615	25	1829	1829	CD
33912	615	26	.	.	.
33912	616	1	(	(	-LRB-
33912	616	2	Also	also	RB
33912	616	3	the	the	DT
33912	616	4	fourth	fourth	JJ
33912	616	5	through	through	IN
33912	616	6	38th	38th	JJ
33912	616	7	annual	annual	JJ
33912	616	8	reports	report	NNS
33912	616	9	.	.	.
33912	617	1	Baltimore	Baltimore	NNP
33912	617	2	,	,	,
33912	617	3	1830	1830	CD
33912	617	4	-	-	SYM
33912	617	5	1864	1864	CD
33912	617	6	.	.	.
33912	617	7	)	)	-RRB-
33912	618	1	----	----	NFP
33912	618	2	.	.	.
33912	619	1	_	_	NNP
33912	619	2	Baltimore	Baltimore	NNP
33912	619	3	and	and	CC
33912	619	4	Ohio	Ohio	NNP
33912	619	5	exhibits	exhibit	VBZ
33912	619	6	at	at	IN
33912	619	7	the	the	DT
33912	619	8	Century	Century	NNP
33912	619	9	of	of	IN
33912	619	10	Progress	Progress	NNP
33912	619	11	.	.	.
33912	619	12	_	_	NNP
33912	619	13	Chicago	Chicago	NNP
33912	619	14	,	,	,
33912	619	15	1934	1934	CD
33912	619	16	.	.	.
33912	620	1	_	_	NNP
33912	620	2	Biographical	Biographical	NNP
33912	620	3	cyclopedia	cyclopedia	NN
33912	620	4	of	of	IN
33912	620	5	representative	representative	JJ
33912	620	6	men	man	NNS
33912	620	7	of	of	IN
33912	620	8	Maryland	Maryland	NNP
33912	620	9	and	and	CC
33912	620	10	the	the	DT
33912	620	11	District	District	NNP
33912	620	12	of	of	IN
33912	620	13	Columbia	Columbia	NNP
33912	620	14	.	.	.
33912	620	15	_	_	NNP
33912	620	16	Baltimore	Baltimore	NNP
33912	620	17	,	,	,
33912	620	18	1879	1879	CD
33912	620	19	.	.	.
33912	621	1	BOLLMAN	BOLLMAN	NNP
33912	621	2	,	,	,
33912	621	3	WENDEL	WENDEL	NNP
33912	621	4	.	.	.
33912	622	1	_	_	NNP
33912	622	2	Iron	Iron	NNP
33912	622	3	suspension	suspension	NN
33912	622	4	and	and	CC
33912	622	5	trussed	truss	VBN
33912	622	6	bridge	bridge	NN
33912	622	7	as	as	IN
33912	622	8	constructed	construct	VBN
33912	622	9	for	for	IN
33912	622	10	the	the	DT
33912	622	11	Baltimore	Baltimore	NNP
33912	622	12	and	and	CC
33912	622	13	Ohio	Ohio	NNP
33912	622	14	Rail	Rail	NNP
33912	622	15	Road	Road	NNP
33912	622	16	Co.	Co.	NNP
33912	622	17	at	at	IN
33912	622	18	Harper	Harper	NNP
33912	622	19	's	's	POS
33912	622	20	Ferry	Ferry	NNP
33912	622	21	,	,	,
33912	622	22	and	and	CC
33912	622	23	on	on	IN
33912	622	24	the	the	DT
33912	622	25	Washington	Washington	NNP
33912	622	26	branch	branch	NN
33912	622	27	of	of	IN
33912	622	28	this	this	DT
33912	622	29	road	road	NN
33912	622	30	.	.	.
33912	622	31	_	_	NNP
33912	622	32	Baltimore	Baltimore	NNP
33912	622	33	,	,	,
33912	622	34	1852	1852	CD
33912	622	35	.	.	.
33912	623	1	----	----	NFP
33912	623	2	.	.	.
33912	624	1	Letter	letter	NN
33912	624	2	to	to	IN
33912	624	3	John	John	NNP
33912	624	4	W.	W.	NNP
33912	624	5	Garrett	Garrett	NNP
33912	624	6	dated	date	VBD
33912	624	7	June	June	NNP
33912	624	8	17	17	CD
33912	624	9	,	,	,
33912	624	10	1862	1862	CD
33912	624	11	.	.	.
33912	625	1	In	in	IN
33912	625	2	files	file	NNS
33912	625	3	of	of	IN
33912	625	4	Division	Division	NNP
33912	625	5	of	of	IN
33912	625	6	Mechanical	Mechanical	NNP
33912	625	7	and	and	CC
33912	625	8	Civil	Civil	NNP
33912	625	9	Engineering	Engineering	NNP
33912	625	10	,	,	,
33912	625	11	United	United	NNP
33912	625	12	States	States	NNP
33912	625	13	National	National	NNP
33912	625	14	Museum	Museum	NNP
33912	625	15	,	,	,
33912	625	16	Washington	Washington	NNP
33912	625	17	,	,	,
33912	625	18	D.C.	D.C.	NNP
33912	625	19	----	----	NFP
33912	625	20	.	.	.
33912	626	1	_	_	NNP
33912	626	2	Report	Report	NNP
33912	626	3	of	of	IN
33912	626	4	Mr.	Mr.	NNP
33912	626	5	Bollman	Bollman	NNP
33912	626	6	in	in	IN
33912	626	7	relation	relation	NN
33912	626	8	to	to	IN
33912	626	9	Central	Central	NNP
33912	626	10	Ohio	Ohio	NNP
33912	626	11	Rail	Rail	NNP
33912	626	12	Road	Road	NNP
33912	626	13	.	.	.
33912	626	14	_	_	NNP
33912	626	15	Baltimore	Baltimore	NNP
33912	626	16	,	,	,
33912	626	17	1854	1854	CD
33912	626	18	.	.	.
33912	627	1	BRYANT	BRYANT	NNP
33912	627	2	,	,	,
33912	627	3	WILLIAM	WILLIAM	NNP
33912	627	4	C.	C.	NNP
33912	627	5	_	_	NNP
33912	627	6	Picturesque	Picturesque	NNP
33912	627	7	America	America	NNP
33912	627	8	.	.	.
33912	627	9	_	_	NNP
33912	627	10	New	New	NNP
33912	627	11	York	York	NNP
33912	627	12	,	,	,
33912	627	13	1874	1874	CD
33912	627	14	.	.	.
33912	628	1	CLARKE	CLARKE	NNP
33912	628	2	,	,	,
33912	628	3	THOMAS	THOMAS	NNP
33912	628	4	CURTIS	CURTIS	NNP
33912	628	5	.	.	.
33912	629	1	_	_	NNP
33912	629	2	An	an	DT
33912	629	3	account	account	NN
33912	629	4	of	of	IN
33912	629	5	the	the	DT
33912	629	6	iron	iron	NN
33912	629	7	railway	railway	NN
33912	629	8	bridge	bridge	NN
33912	629	9	across	across	IN
33912	629	10	the	the	DT
33912	629	11	Mississippi	Mississippi	NNP
33912	629	12	River	River	NNP
33912	629	13	at	at	IN
33912	629	14	Quincy	Quincy	NNP
33912	629	15	,	,	,
33912	629	16	Illinois	Illinois	NNP
33912	629	17	.	.	.
33912	629	18	_	_	NNP
33912	629	19	New	New	NNP
33912	629	20	York	York	NNP
33912	629	21	,	,	,
33912	629	22	1869	1869	CD
33912	629	23	.	.	.
33912	630	1	COLBURN	COLBURN	NNP
33912	630	2	,	,	,
33912	630	3	ZERAH	ZERAH	NNP
33912	630	4	.	.	.
33912	631	1	American	american	JJ
33912	631	2	iron	iron	NN
33912	631	3	bridges	bridge	NNS
33912	631	4	.	.	.
33912	632	1	_	_	NNP
33912	632	2	Minutes	Minutes	NNPS
33912	632	3	of	of	IN
33912	632	4	the	the	DT
33912	632	5	proceedings	proceeding	NNS
33912	632	6	of	of	IN
33912	632	7	the	the	DT
33912	632	8	Institution	Institution	NNP
33912	632	9	of	of	IN
33912	632	10	Mechanical	Mechanical	NNP
33912	632	11	Engineers	Engineers	NNPS
33912	632	12	_	_	NNP
33912	632	13	(	(	-LRB-
33912	632	14	1863	1863	CD
33912	632	15	)	)	-RRB-
33912	632	16	,	,	,
33912	632	17	vol	vol	NNP
33912	632	18	.	.	.
33912	633	1	22	22	CD
33912	633	2	,	,	,
33912	633	3	pp	pp	NNP
33912	633	4	.	.	.
33912	634	1	540	540	CD
33912	634	2	-	-	SYM
33912	634	3	573	573	CD
33912	634	4	.	.	.
33912	635	1	CONDIT	CONDIT	NNP
33912	635	2	,	,	,
33912	635	3	CARL	CARL	NNP
33912	635	4	.	.	.
33912	636	1	_	_	NNP
33912	636	2	American	american	JJ
33912	636	3	building	building	NN
33912	636	4	art:--The	art:--the	JJ
33912	636	5	nineteenth	nineteenth	JJ
33912	636	6	century	century	NN
33912	636	7	.	.	.
33912	636	8	_	_	NNP
33912	636	9	New	New	NNP
33912	636	10	York	York	NNP
33912	636	11	:	:	:
33912	636	12	Oxford	Oxford	NNP
33912	636	13	Press	Press	NNP
33912	636	14	,	,	,
33912	636	15	1960	1960	CD
33912	636	16	.	.	.
33912	637	1	GRAY	GRAY	NNP
33912	637	2	,	,	,
33912	637	3	GEORGE	GEORGE	NNP
33912	637	4	E.	E.	NNP
33912	637	5	Notes	Notes	NNP
33912	637	6	on	on	IN
33912	637	7	early	early	JJ
33912	637	8	practice	practice	NN
33912	637	9	in	in	IN
33912	637	10	bridge	bridge	NN
33912	637	11	building	building	NN
33912	637	12	.	.	.
33912	638	1	_	_	NNP
33912	638	2	Transactions	Transactions	NNPS
33912	638	3	of	of	IN
33912	638	4	the	the	DT
33912	638	5	American	American	NNP
33912	638	6	Society	Society	NNP
33912	638	7	of	of	IN
33912	638	8	Civil	Civil	NNP
33912	638	9	Engineers	Engineers	NNPS
33912	638	10	_	_	NNP
33912	638	11	(	(	-LRB-
33912	638	12	1897	1897	CD
33912	638	13	)	)	-RRB-
33912	638	14	,	,	,
33912	638	15	vol	vol	NNP
33912	638	16	.	.	.
33912	639	1	37	37	CD
33912	639	2	,	,	,
33912	639	3	pp	pp	NNP
33912	639	4	.	.	.
33912	640	1	2	2	CD
33912	640	2	-	-	SYM
33912	640	3	16	16	CD
33912	640	4	.	.	.
33912	641	1	GREINER	GREINER	NNP
33912	641	2	,	,	,
33912	641	3	JOHN	JOHN	NNP
33912	641	4	E.	E.	NNP
33912	641	5	The	the	DT
33912	641	6	American	american	JJ
33912	641	7	railroad	railroad	NN
33912	641	8	viaduct	viaduct	NN
33912	641	9	--	--	:
33912	641	10	Its	-PRON-	PRP$
33912	641	11	origin	origin	NN
33912	641	12	and	and	CC
33912	641	13	evolution	evolution	NN
33912	641	14	.	.	.
33912	642	1	_	_	NNP
33912	642	2	Transactions	Transactions	NNPS
33912	642	3	of	of	IN
33912	642	4	the	the	DT
33912	642	5	American	American	NNP
33912	642	6	Society	Society	NNP
33912	642	7	of	of	IN
33912	642	8	Civil	Civil	NNP
33912	642	9	Engineers	Engineers	NNPS
33912	642	10	_	_	NNP
33912	642	11	(	(	-LRB-
33912	642	12	1891	1891	CD
33912	642	13	)	)	-RRB-
33912	642	14	,	,	,
33912	642	15	vol	vol	NNP
33912	642	16	.	.	.
33912	643	1	25	25	CD
33912	643	2	,	,	,
33912	643	3	pp	pp	NNP
33912	643	4	.	.	.
33912	644	1	349	349	CD
33912	644	2	-	-	SYM
33912	644	3	372	372	CD
33912	644	4	.	.	.
33912	645	1	LANG	LANG	NNP
33912	645	2	,	,	,
33912	645	3	PHILIP	PHILIP	NNP
33912	645	4	GEORGE	GEORGE	NNP
33912	645	5	.	.	.
33912	646	1	Bollman	Bollman	NNP
33912	646	2	trusses	truss	NNS
33912	646	3	on	on	IN
33912	646	4	Valley	Valley	NNP
33912	646	5	of	of	IN
33912	646	6	Virginia	Virginia	NNP
33912	646	7	Branch	Branch	NNP
33912	646	8	will	will	MD
33912	646	9	soon	soon	RB
33912	646	10	be	be	VB
33912	646	11	memories	memory	NNS
33912	646	12	.	.	.
33912	647	1	_	_	NNP
33912	647	2	Baltimore	Baltimore	NNP
33912	647	3	and	and	CC
33912	647	4	Ohio	Ohio	NNP
33912	647	5	Magazine	Magazine	NNP
33912	647	6	_	_	NNP
33912	647	7	(	(	-LRB-
33912	647	8	October	October	NNP
33912	647	9	1923	1923	CD
33912	647	10	)	)	-RRB-
33912	647	11	,	,	,
33912	647	12	pp	pp	NNP
33912	647	13	.	.	.
33912	648	1	18	18	CD
33912	648	2	-	-	SYM
33912	648	3	19	19	CD
33912	648	4	.	.	.
33912	649	1	----	----	NFP
33912	649	2	.	.	.
33912	650	1	The	the	DT
33912	650	2	old	old	JJ
33912	650	3	Baltimore	Baltimore	NNP
33912	650	4	and	and	CC
33912	650	5	Ohio	Ohio	NNP
33912	650	6	bridge	bridge	NN
33912	650	7	crossing	cross	VBG
33912	650	8	the	the	DT
33912	650	9	Potomac	Potomac	NNP
33912	650	10	River	River	NNP
33912	650	11	at	at	IN
33912	650	12	Harpers	Harpers	NNP
33912	650	13	Ferry	Ferry	NNP
33912	650	14	,	,	,
33912	650	15	West	West	NNP
33912	650	16	[	[	-LRB-
33912	650	17	sic	sic	NN
33912	650	18	]	]	-RRB-
33912	650	19	Virginia	Virginia	NNP
33912	650	20	.	.	.
33912	651	1	_	_	NNP
33912	651	2	Engineering	Engineering	NNP
33912	651	3	News	News	NNP
33912	651	4	-	-	HYPH
33912	651	5	Record	Record	NNP
33912	651	6	_	_	NNP
33912	651	7	(	(	-LRB-
33912	651	8	September	September	NNP
33912	651	9	17	17	CD
33912	651	10	,	,	,
33912	651	11	1931	1931	CD
33912	651	12	)	)	-RRB-
33912	651	13	,	,	,
33912	651	14	p.	p.	NN
33912	651	15	446	446	CD
33912	651	16	.	.	.
33912	652	1	MALEZIEUX	MALEZIEUX	NNP
33912	652	2	,	,	,
33912	652	3	EMILE	EMILE	NNP
33912	652	4	.	.	.
33912	653	1	_	_	NNP
33912	653	2	Travaux	Travaux	NNP
33912	653	3	publics	public	NNS
33912	653	4	des	des	FW
33912	653	5	Etats	Etats	NNP
33912	653	6	-	-	HYPH
33912	653	7	Unis	Unis	NNP
33912	653	8	d'Amerique	d'Amerique	NNP
33912	653	9	en	en	IN
33912	653	10	1870	1870	CD
33912	653	11	.	.	.
33912	653	12	_	_	NNP
33912	653	13	Paris	Paris	NNP
33912	653	14	,	,	,
33912	653	15	1873	1873	CD
33912	653	16	.	.	.
33912	654	1	MCDOWELL	MCDOWELL	NNP
33912	654	2	,	,	,
33912	654	3	W.	W.	NNP
33912	654	4	H.	H.	NNP
33912	654	5	Unpublished	Unpublished	NNP
33912	654	6	engineer	engineer	NN
33912	654	7	's	's	POS
33912	654	8	report	report	NN
33912	654	9	to	to	IN
33912	654	10	the	the	DT
33912	654	11	president	president	NN
33912	654	12	and	and	CC
33912	654	13	directors	director	NNS
33912	654	14	of	of	IN
33912	654	15	Wilmington	Wilmington	NNP
33912	654	16	Railway	Railway	NNP
33912	654	17	Bridge	Bridge	NNP
33912	654	18	Company	Company	NNP
33912	654	19	,	,	,
33912	654	20	Wilmington	Wilmington	NNP
33912	654	21	,	,	,
33912	654	22	North	North	NNP
33912	654	23	Carolina	Carolina	NNP
33912	654	24	,	,	,
33912	654	25	dated	date	VBN
33912	654	26	March	March	NNP
33912	654	27	12	12	CD
33912	654	28	,	,	,
33912	654	29	1868	1868	CD
33912	654	30	.	.	.
33912	655	1	Typewritten	typewrite	VBN
33912	655	2	copy	copy	VBP
33912	655	3	in	in	IN
33912	655	4	files	file	NNS
33912	655	5	of	of	IN
33912	655	6	Division	Division	NNP
33912	655	7	of	of	IN
33912	655	8	Mechanical	Mechanical	NNP
33912	655	9	and	and	CC
33912	655	10	Civil	Civil	NNP
33912	655	11	Engineering	Engineering	NNP
33912	655	12	,	,	,
33912	655	13	U.S.	U.S.	NNP
33912	655	14	National	National	NNP
33912	655	15	Museum	Museum	NNP
33912	655	16	,	,	,
33912	655	17	Washington	Washington	NNP
33912	655	18	,	,	,
33912	655	19	D.C.	D.C.	NNP
33912	655	20	SMITH	SMITH	NNP
33912	655	21	,	,	,
33912	655	22	CHARLES	CHARLES	NNP
33912	655	23	SHALER	SHALER	NNP
33912	655	24	.	.	.
33912	656	1	_	_	NNP
33912	656	2	Comparative	comparative	JJ
33912	656	3	analysis	analysis	NN
33912	656	4	of	of	IN
33912	656	5	the	the	DT
33912	656	6	Fink	Fink	NNP
33912	656	7	,	,	,
33912	656	8	Murphy	Murphy	NNP
33912	656	9	,	,	,
33912	656	10	Bollman	Bollman	NNP
33912	656	11	and	and	CC
33912	656	12	triangular	triangular	JJ
33912	656	13	trusses	truss	NNS
33912	656	14	.	.	.
33912	656	15	_	_	NNP
33912	656	16	Baltimore	Baltimore	NNP
33912	656	17	,	,	,
33912	656	18	1865	1865	CD
33912	656	19	.	.	.
33912	657	1	SMITH	SMITH	NNP
33912	657	2	,	,	,
33912	657	3	WILLIAM	WILLIAM	NNP
33912	657	4	P.	P.	NNP
33912	657	5	_	_	NNP
33912	657	6	The	the	DT
33912	657	7	book	book	NN
33912	657	8	of	of	IN
33912	657	9	the	the	DT
33912	657	10	great	great	JJ
33912	657	11	railway	railway	NN
33912	657	12	celebrations	celebration	NNS
33912	657	13	of	of	IN
33912	657	14	1857	1857	CD
33912	657	15	.	.	.
33912	657	16	_	_	NNP
33912	657	17	Baltimore	Baltimore	NNP
33912	657	18	,	,	,
33912	657	19	1858	1858	CD
33912	657	20	.	.	.
33912	658	1	TYRRELL	TYRRELL	NNP
33912	658	2	,	,	,
33912	658	3	HENRY	HENRY	NNP
33912	658	4	G.	G.	NNP
33912	658	5	_	_	NNP
33912	658	6	History	History	NNP
33912	658	7	of	of	IN
33912	658	8	bridge	bridge	NN
33912	658	9	engineering	engineering	NN
33912	658	10	.	.	.
33912	658	11	_	_	NNP
33912	658	12	Chicago	Chicago	NNP
33912	658	13	,	,	,
33912	658	14	1911	1911	CD
33912	658	15	.	.	.
33912	659	1	WHIPPLE	WHIPPLE	NNP
33912	659	2	,	,	,
33912	659	3	SQUIRE	SQUIRE	NNS
33912	659	4	.	.	.
33912	660	1	_	_	NNP
33912	660	2	Bridge	Bridge	NNP
33912	660	3	building	building	NN
33912	660	4	.	.	.
33912	660	5	_	_	NNP
33912	660	6	Albany	Albany	NNP
33912	660	7	,	,	,
33912	660	8	New	New	NNP
33912	660	9	York	York	NNP
33912	660	10	,	,	,
33912	660	11	1869	1869	CD
33912	660	12	.	.	.
33912	661	1	U.S.	U.S.	NNP
33912	661	2	GOVERNMENT	GOVERNMENT	NNP
33912	661	3	PRINTING	print	VBG
33912	661	4	OFFICE	office	NN
33912	661	5	:	:	:
33912	661	6	1964	1964	CD
33912	661	7	For	for	IN
33912	661	8	sale	sale	NN
33912	661	9	by	by	IN
33912	661	10	the	the	DT
33912	661	11	Superintendent	Superintendent	NNP
33912	661	12	of	of	IN
33912	661	13	Documents	Documents	NNPS
33912	661	14	,	,	,
33912	661	15	U.S.	U.S.	NNP
33912	661	16	Government	Government	NNP
33912	661	17	Printing	Printing	NNP
33912	661	18	Office	Office	NNP
33912	661	19	Washington	Washington	NNP
33912	661	20	D.C.	D.C.	NNP
33912	661	21	20402	20402	CD
33912	661	22	-	-	HYPH
33912	661	23	Price	price	NN
33912	661	24	70	70	CD
33912	661	25	cents	cent	NNS
33912	661	26	INDEX	INDEX	NNP
33912	661	27	Bollman	Bollman	NNP
33912	661	28	,	,	,
33912	661	29	W.	W.	NNP
33912	661	30	,	,	,
33912	661	31	and	and	CC
33912	661	32	Company	Company	NNP
33912	661	33	,	,	,
33912	661	34	91	91	CD
33912	661	35	,	,	,
33912	661	36	92	92	CD
33912	661	37	Bollman	Bollman	NNP
33912	661	38	,	,	,
33912	661	39	Wendel	Wendel	NNP
33912	661	40	,	,	,
33912	661	41	79	79	CD
33912	661	42	,	,	,
33912	661	43	80	80	CD
33912	661	44	,	,	,
33912	661	45	85	85	CD
33912	661	46	,	,	,
33912	661	47	88	88	CD
33912	661	48	,	,	,
33912	661	49	94	94	CD
33912	661	50	Clark	Clark	NNP
33912	661	51	,	,	,
33912	661	52	John	John	NNP
33912	661	53	,	,	,
33912	661	54	91	91	CD
33912	661	55	Fink	Fink	NNP
33912	661	56	,	,	,
33912	661	57	Albert	Albert	NNP
33912	661	58	,	,	,
33912	661	59	79	79	CD
33912	661	60	,	,	,
33912	661	61	91	91	CD
33912	661	62	Grubenmann	Grubenmann	NNP
33912	661	63	,	,	,
33912	661	64	Hans	Hans	NNP
33912	661	65	,	,	,
33912	661	66	85	85	CD
33912	661	67	Grubenmann	Grubenmann	NNP
33912	661	68	,	,	,
33912	661	69	Johann	Johann	NNP
33912	661	70	Ulrich	Ulrich	NNP
33912	661	71	,	,	,
33912	661	72	85	85	CD
33912	661	73	Haupt	Haupt	NNP
33912	661	74	,	,	,
33912	661	75	Herman	Herman	NNP
33912	661	76	,	,	,
33912	661	77	96	96	CD
33912	661	78	Knight	Knight	NNP
33912	661	79	,	,	,
33912	661	80	----	----	NFP
33912	661	81	,	,	,
33912	661	82	83	83	CD
33912	661	83	Latrobe	Latrobe	NNP
33912	661	84	,	,	,
33912	661	85	Benjamin	Benjamin	NNP
33912	661	86	H.	H.	NNP
33912	661	87	,	,	,
33912	661	88	82	82	CD
33912	661	89	,	,	,
33912	661	90	83	83	CD
33912	661	91	,	,	,
33912	661	92	85	85	CD
33912	661	93	,	,	,
33912	661	94	87	87	CD
33912	661	95	Long	long	RB
33912	661	96	,	,	,
33912	661	97	Stephen	Stephen	NNP
33912	661	98	H.	H.	NNP
33912	661	99	,	,	,
33912	661	100	85	85	CD
33912	661	101	Meigs	Meigs	NNP
33912	661	102	,	,	,
33912	661	103	M.	M.	NNP
33912	661	104	C.	C.	NNP
33912	661	105	,	,	,
33912	661	106	96	96	CD
33912	661	107	Morris	Morris	NNP
33912	661	108	,	,	,
33912	661	109	Tasker	Tasker	NNP
33912	661	110	and	and	CC
33912	661	111	Company	Company	NNP
33912	661	112	,	,	,
33912	661	113	94	94	CD
33912	661	114	Mount	Mount	NNP
33912	661	115	Clair	Clair	NNP
33912	661	116	shops	shop	NNS
33912	661	117	,	,	,
33912	661	118	83	83	CD
33912	661	119	,	,	,
33912	661	120	89	89	CD
33912	661	121	,	,	,
33912	661	122	92	92	CD
33912	661	123	Patapsco	Patapsco	NNP
33912	661	124	Bridge	Bridge	NNP
33912	661	125	and	and	CC
33912	661	126	Iron	Iron	NNP
33912	661	127	Works	Works	NNP
33912	661	128	,	,	,
33912	661	129	92	92	CD
33912	661	130	,	,	,
33912	661	131	95	95	CD
33912	661	132	Phoenix	Phoenix	NNP
33912	661	133	Iron	Iron	NNP
33912	661	134	Works	Works	NNP
33912	661	135	,	,	,
33912	661	136	92	92	CD
33912	661	137	Pratt	Pratt	NNP
33912	661	138	,	,	,
33912	661	139	Thomas	Thomas	NNP
33912	661	140	W.	W.	NNP
33912	661	141	,	,	,
33912	661	142	91	91	CD
33912	661	143	Reeves	Reeves	NNP
33912	661	144	,	,	,
33912	661	145	Samuel	Samuel	NNP
33912	661	146	J.	J.	NNP
33912	661	147	,	,	,
33912	661	148	92	92	CD
33912	661	149	,	,	,
33912	661	150	95	95	CD
33912	661	151	Roebling	Roebling	NNP
33912	661	152	,	,	,
33912	661	153	John	John	NNP
33912	661	154	A.	A.	NNP
33912	661	155	,	,	,
33912	661	156	83	83	CD
33912	661	157	,	,	,
33912	661	158	90	90	CD
33912	661	159	Savage	Savage	NNP
33912	661	160	Factory	Factory	NNP
33912	661	161	,	,	,
33912	661	162	88	88	CD
33912	661	163	Stephenson	Stephenson	NNP
33912	661	164	,	,	,
33912	661	165	Robert	Robert	NNP
33912	661	166	,	,	,
33912	661	167	90	90	CD
33912	661	168	Tegmeyer	Tegmeyer	NNP
33912	661	169	,	,	,
33912	661	170	John	John	NNP
33912	661	171	H.	H.	NNP
33912	661	172	,	,	,
33912	661	173	91	91	CD
33912	661	174	Town	Town	NNP
33912	661	175	,	,	,
33912	661	176	Ithiel	Ithiel	NNP
33912	661	177	,	,	,
33912	661	178	85	85	CD
33912	661	179	Wernwag	Wernwag	NNP
33912	661	180	,	,	,
33912	661	181	Lewis	Lewis	NNP
33912	661	182	,	,	,
33912	661	183	89	89	CD
33912	661	184	Whipple	Whipple	NNP
33912	661	185	,	,	,
33912	661	186	Squire	Squire	NNP
33912	661	187	,	,	,
33912	661	188	79	79	CD
33912	661	189	,	,	,
33912	661	190	83	83	CD
33912	661	191	,	,	,
33912	661	192	87	87	CD
33912	661	193	,	,	,
33912	661	194	91	91	CD
33912	661	195	,	,	,
33912	661	196	95	95	CD
33912	661	197	Whistler	Whistler	NNP
33912	661	198	,	,	,
33912	661	199	George	George	NNP
33912	661	200	W.	W.	NNP
33912	661	201	,	,	,
33912	661	202	83	83	CD
33912	661	203	Winans	Winans	NNPS
33912	661	204	,	,	,
33912	661	205	Ross	Ross	NNP
33912	661	206	,	,	,
33912	661	207	83	83	CD
33912	661	208	Wright	Wright	NNP
33912	661	209	,	,	,
33912	661	210	Benjamin	Benjamin	NNP
33912	661	211	,	,	,
33912	661	212	83	83	CD