57th Congress, I HOUSE OF REPRESENTATIVES. J Document 

M Session. ] \ No. 375. 



OBSERVATIONS AND CALCULATIONS 

AND 

FIELD NOTES 



THE ESTABLISHMENT OF THE POINT OF INTERSECTION 

OF THE TRUE 100th MERIDIAN WITH 

THE RED RIVER. 



UNDER THE PROVISIONS OF THE ACT OF JANUARY 15, 1901 
(31 STATS., 731). 



ARTHUR D. KIDDEE, 

Examiner uf Surveys, General Land 



Determination commenced February 13, 1902. 
Determination completed April 16, 1902. 



February 10, 1903. — Referred to the Committee on the Public Lands 
and ordered to be printed. 



WASHINGTON: 

GOVERNMENT PRINTING OFFICE. 

1903. 



LETITRS OF TRANSMITTAL. 



Department of the Interior, 

General Land Office, 

Wafthhigton, D. C, February 5, 1903. 
Sir: Respectfully referring- to your letter dated Ma}^ 31, 1901, detail- 
ing- Arthur D. Kidder, examiner of surveys, to make the necessary 
observations and calculations and to establish the point of intersection 
of the true one hundredth meridian with the Red River, under the 
provisions of the act of Congress approved January 15, 1901 (31 Stats., 
731), 1 have the honor to report that by letter dated January 24, 1903, 
]VIr. Kidder transmitted to this office the complete Held notes, in dupli- 
cate, of said determination. The said Meld notes of the observations 
and calculations for the establishment of the point of intersection of 
the true one hundredth meridian with the Red River having been 
examined, it appears that Mr. Kidder has fulfilled the requirements of 
his instructions from this office, dated February -4, 1902, and the said 
field notes and the determination the}^ describe have therefore been 
approved on this date. 

******* 

I transmit herewith the duplicate copj^ of said field notes of the 

establishment of the point of intersection of the true one hundredth 

meridian with the Red River, in temporary binding, duly approved 

by this office, for such action as you may desire to take in the matter. 

Very respectfully, 

W. A. Richards, Coimnissioner. 
The honorable Secretary of the Interior. 



Department of the Interior, 

AYiuliington^ Fehruary ,9, 1903. 
^'ir: The first section of the act of Cong-ress approved January 15, 
1901 (31 Stats., 731), provides as follows: 

That the Secretary of the Interior be, and he is hereby, authorized and directed 
to cause to be estabUshed and fixed the intersection of the true one hundredth merid- 
ian with Red River, or what, prior to said decision, was known some time as the 
South Fork of Red River, or Prairie Dog Town Fork, by the most accurate and sci- 
entific methods, and 'at said intersection cause a suitable monument to be erected on 
the ground. 

On December 1, 1902, in compliance with the direction thus given, 
I reported to you that I had caused a determination of the intersection 
of the true one hundredth meridian with Red River, and the establish- 
ment of a permanent monument to mark such intersection, and trans- 
mitted with the report a copy of the preliminary report of Arthur D. 
Kidder, examiner of surveys, who performed the work. 

3 



4 THE ONE HUNDEEDTH MERIDIAN. 

I now have the honor to transmit herewith, as a final report, and for 
the information of the Congress, a copy of the observations, calcula- 
tions, and field notes of the establishment of the point of intersection 
of the true one hundredth meridian with the Red River, by Arthur 
D. Kidder, examiner of surveys, General Land OflSce, and a copy of 
so much of the letter of the 6th instant, from the Commissioner of the 
General Land Ofiice, as relates to the subject. 
Very respectfullj^, 

E, A. Hitchcock, 

Secretary. 
The Speaker of the House of Representatives. 



THE ONE HUNDREDTH MERIDIAN. 



Old Initial 
Monument. 



3B99. 7 fit. 



2267.1 



Asfron. 
Pier. 



1442. 6 






ESTABLISHMENT OF THE POINT OF INTERSECTION 
OF THE TRUE ONE HUNDREDTH MERIDIAN WITH 
THE RED RIVER. 

ASSISTANTS. 

Augustus MacConnel, 

United Stdtcii Astronomer, Elmira, N. Y., Assii^tant Astronomer. 

C. N. McNeill, 

Supermtendent of the Western Union Time Service, St. Louis, Mo., Telegrapher, 

St. Louis, Mo. 

F. W. Wessel, 

Western Union Telegraph Companij, Denver, Colo., Telegrapher, Red River Obserratory. 



THE RED RIVER OBSERVATORY. 

February 13, 1902, I found the old initial monument of the Texas 
and Oklahoma boundary, on the crest of the hill that rises to the 
north from the left bank of the South Fork of the Red River; this 
monument is — 

A combination of gypsum-sandstone 5 b}^ 12 by 18 inches above 
ground, set in a small mound of stone; marked 100 W on east face, 
and 1 M on west face; established by A. H. Jones and H. M. C. Brown, 
United States surve3^ors, in 1859, under their contract with the Com- 
missioner of Indian Affairs, dated October 13, 1857. 

Latitude, 34^ 34' 1:3". 4; longitude, 100 ' 00' 45".41 (preliminary 
assumption). Values as determined by Prof. Henry S. Pritchett in 
1892, and assumed by me in preliminary work. (See printed records 
in the Supreme Court of the United States in the case involving title 
to Greer County, Tex., now Greer County, Okla.) 

From the initial monument I projected a random meridian south 
across Red River to an intersection with the Fort Worth and Denver 
Railroad, about 14 miles distant, where arrangement was made to 
connect with the wires of the Western Union Telegraph Company. 

In the projection of the random meridian, I used transit No. 7058 
made b}' Young & Sons, and equipped with the Smith solar attach- 
ment. A solar meridian was determined at ever}^ instrument point. 

The point of intersection being unfavorable for astronomical obser- 
vations, a point for the Red River observatory was chosen on a small 
hill a])out a quarter of a mile north of the railroad and a little less 
than half of a mile east of the projected meridian. At this assumed 
point a concrete pier was built for the meridian telescope, and a small 
shed opening in the meridian was constructed to protect the instru- 
ments. 

February 16, 1902, at apparent noon, at the astronomical pier, I set 
12"" 26' S. on the decl. arc of the solar and observe the sun on the 
meridian; the resulting latitude being = 34^ 23' N., which is the value 



8 THE ONE HUNDREDTH MERIDIAN. 

used in the following observations and calculations. (No requirement 
in the longitude determination calling for a more precise determination 
of the latitude of the place of observation.) 

February 16, 1902, at 2*' 0" p. m. App. T., at the astronomical pier 
I set 34° 23' N. on the lat. arc of the solar, 12° 24' S. on the decl. arc, 
and determine the meridian in azimuth, which I mark upon the ground 
for preliminary work. 

From the astronomical pier a sandstone 10 by 12 by 18 inches above 
ground, marked C. C. on west face and H. C. on east face, bears S. 
77° 24' E. 39.54 chains distant; this stone is on the meridian county 
line between Childress and Hardeman counties, Tex., and lies a few 
hundred feet north of the Fort Worth and Denver Railroad, the Red 
River observatory being in Childress County, Tex. 

The observatory was established February 18, 1902. The equip- 
ment consisted of a Wurdemann meridian telescope, object glass 2i 
inches, focal length 24 inches; a Saegmuller chronograph, and a Bond 
& Son's sidereal break-circuit chronometer No. 668, property of the 
General Land Office, and a full set of telegraphic instruments, prop- 
erty of the Western Union Telegraph Company. 

THE LEVELS. 

The meridian telescope is provided with two striding levels: 
(1) "Old level," zero at the center of the tube, to be used with a 
bubble approximately 80 divisions long, the value of 1 division of 
which I determined on a Saegmuller "level-trier" to be, d=0^.08, as 
follows: 

Tabulated trials. 



No. 


Levels. 


Mean 
differ- 
ence. 


Are of 
screw. 


Value one 
division. 


E. 


W. 










„ 


„ 


1 


66.0 
18.0 


17.0 
65.0 


48.0 


60 


1.250 


2 


69.4 
25.6 


15.6 
59.4 


43.8 


50 


1.141 


3 


27.0 
63.6 


56.8 
20.3 


36. 5 


40 


1.097 


4 


35! 5 


32.3 
66.5 


34.25 


40 


1.168 


5 


66.2 
24.0 


24.3 
66.5 


32.2 


40 


1.243 


6 


66.0 
24.0 


22.0 
54.0 


32.0 


40 


1.250 


7 


32.0 
68.0 


70.8 
44.8 


26.0 


30 


1.164 


8 


66.5 
30.8 


23.5 
48.0 


24.6 


30 


1.220 


9 


30.0 

49.8 


48.0 
28.4 


19.7 


25 


1.269 


10 


67.5 
70.4 


44.8 
.32.2 


12. 75 


15 


1.177 


11 


36.8 
49. 1 


41.3 

28.8 


12.4 
Mean... 


15 


1.210 
1.198 








1/15 


"'d=" 


0«.0799 
0».08 



THE ONE HUNDREDTH MERIDIAN. 



9 



(2) " New level," zero at the east end when used " direct," and at the 
west end when used "reversed;" to be used with a bubble approxi- 
mately 35 divisions long, the value of one division of which 1 deter- 
mined on a Saeg-muller "level trier" to be <i=OMll, as follows: 



Tabulated trials. 



21.7 
4.4 



3.4 
21.5 



21.6 
3.4 



3.4 
21.2 



3.3 
21.3 



11 


4.3 
22.6 


12 


22.6 
3.6 


13 


3.6 
22.4 


14 


22.6 
3.4 


15 


3.2 
21.7 


16 


19.5 
7.5 


17 


7.7 
19.4 


18 


19.4 
7.1 


19 


7.2 
19.3 


20 


19.6 
7.0 


21 


7.0 
19.0 


22 


18.5 
6.8 


23 


6.8 
18.5 


24 


18.7 
6.5 


25 


6.5 
18.4 



39.1 
57.0 



37.6 
55.8 



55.9 
37.6 



37.5 
55.4 



55.5 
37.5 



37.5 
55.5 



57.4 
38.4 



38.3 
57.4 



57.3 
38.0 



63.9 
41.8 



53.8 
41.3 



41.5 
63.7 



53.9 
41.3 



41.2 
53.1 



41.1 
41.1 



Mean 
differ- 
ence. 



17.65 
18.80 
17.16 
17.45 
17.85 
18.15 
18.25 
17. 85 
17.95 
18.00 
18.25 
19.00 
19.00 
19.25 
18.45 
12.05 
11.80 
12.40 
12. 15 
12. 60 
11.95 
11.75 
11.55 
12.30 
12.06 



Mean of 
five. 



Arc of 
screw. 



Value one 
division. 



THE ONE HUNDREDTH MERIDIAN. 

Tabulated trials — Continuetl. 



No. 


Levels. 


Mean 
differ- 
ence. 


Mean of 
five. 


Arc of 

screw. 


Value one 
division. 


E. 


W. 












„ 


„ 


26 


18.5 


52.5 








1.718 




5.5 


39.4 


13.05 






1.663 












1 1. 597 


•27 


5.4 


39.4 










17.8 


51.7 


12.35 




i ■ 1.G40 


" 


17.8 
5.6 


51.7 
39.5 


12.20 








29 


6.6 
17.7 


39.5 
51.6 


12. 10 








30 


17.7 


61.6 












5.5 


39.3 


12. 25 


12. 39 


•JO 


1.616 


31 


10.6 
16.4 


44.8 
50.6 


5.85 








32 


16.4 
10.2 


60.6 
44.6 


6.15 








33 


10.6 
16.4 


44.8 
.50.5 


5.75 








34 


16.4 
10.0 


50.5 
44.2 


6.36 








36 


10.1 


44.3 












16.3 


50.5 


6.20 


6. 06 10 


1. 6.50 


36 


15.7 


49.9 




1 






9.6 


43.8 


ti.lO 


1 




37 


9.6 


43.8 




1 

! 






15.7 


49.8 


6.05 






38 


16.7 


49.9 




1 






9.4 


43.3 


6. 45 








39 


9.0 


43.1 












14.4 


48.5 


5.40 








40 


14.0 


48.0 






1 




6.7 


40.6 


7.35 


6.27 


10 1 1.596 


41 


8.4 


42.0 










14.4 


48.0 


6.00 






42 


14.4 


48.0 






1 




8.6 


42.0 


.5.90 




1 


43 


8.6 
14.5 


42.0 
48.1 


6.00 








44 


14.6 
9.2 


48.1 
42.7 


5. 35 








45 


9.1 


42.7 












14.6 


48.0 


5.35 


5.75 


10 


1.740 


46 


1.6 








1 


47 


5.0 


38.3 


3.40 






48 


7.7 


41.1 


2.76 




1 


49 


10.9 


44.3 


3.20 






50 


14.3 


47.9 


3.50 








51 


17.1 


50.4 


2.6-5 








52 


19.7 


53.0 


2.60 








53 


22.6 


55.9 


2.85 








54 




58.2 


2.30 








55 


22.3 


55.5 


2.70 








56 


19.7 


53.0 


2.65 








57 


17.1 


50.4 


2.60 








58 
59 


14./ 
10.9 


48.0 
44.2 


2.40 
3.70 








60 


7.3 


40.5 


3 65 








61 


4.4 


37.4 


3.00 








62 


0.6 




3 80 


2.97 
Mean . . 


5 


1.684 

1 658 
0» 1105+ 


1,15 




! 








d = 




0' 111 



THE ONE HUNDREDTH MERIDIAN. 



11 



THE WERE INTERVALS 

The reticle of the meridian telescope contains seven wires, but being 
broadly spaced as suited to e^^e and ear observations, it was found ad- 
visable to use five wires in our chronographic method. 

To determine the wire intervals of the meridian telescope, Mr. 
MacConnel observed 51 Cephei H March 5, 1902, clamp west: 

(5=87°lVl8'^3 
i*=equatorial wire interval. 
F''=observed wire interval. 
. sin V^ cos d 
^^ 15 sin F' 
log cos 5=8. 688073 
log 15=1. 176091 
log sin V'=4. 685575 
log (cos 5-H15 sin y')=2. 826407 



Wires. 


Chronometer 


Interval to 


I. 


time. 


"mean wire." 




h. TO. s. 


VI. s. 


o / // 


1 


6 38 33.9 


- 15 2.8 


3 45 42 


2 


46 8.1 


- 7 28.6 


1 52 9 


3 


53 30.7 


6.0 


1 30 


4 


7 1 14. 6 


+ 7 37.9 


1 54 28.5 


5 


8 36.0 


+ 14 59.3 


3 44 49.5 


Mean 


6 53 36.7 








loff sin I. 


,o,C 


I's 


1 


8.816945 


1.643352 


— 43. 99 




8. 513449 


1.339856 


- 21.87 


3 


6. 639818 


9. 466225 


- 0. 29 


4 


8. 522358 


1.348763 


+ 22.32 


5 


8.815261 


1.641668 


+ 43.82 



THE ST. liOUIS OBSERVATORY. 

The observatory of the Washington Universit}^ at St. Louis, Mo., 
was chosen as the reference observatory, and Chancellor W. S. Chaplin, 
of the University, kindly granted the use of their instruments to the 
United States for the determination. 

Latitude = 38° 38' 3" .0; longitude=6'* 00'" 49« .168 (Standard). 

The equipment of the St. Louis observatory used })y us was their 
Fauth transit instrument, object glass ^i inches, focal length 30 inches; 
a Warner and Zwazey chronograph; and their large sidereal break- 
circuit clock. The Western Union Telegraph Company also installed 
a full set of telegraphic instruments at the St. ]jOuis observatory and 
connected ])oth observatories to their wires. 

THE LEVEL. 



The St. Louis transit is provided with an accurate striding level, 
zero at the center; to be used with a bubble approximately 20 divi- 
sions long; 1 division of the level is: d—0'' .136. 



12 THE ONE HUNDREDTH MERIDIAN. 

WIRE INTERVALS. 

The seven wires of the reticle of the St. Louis transit are properly 
spaced for chronographic work, and all were used, the wire intervals, 
clamp west, are: 



1 -13. 428 

2 - 8.911 

3 - 4.466 

4 - 0.010 



5 + 4.432 

6 + 8.927 

7 +13.456 



The above values for the level and wire intervals were kindl.y fur- 
nished bj^ Professor Lichter, astronomer, Washington University. 

PROGRAMME. 

The nightly programme consisted in the determination of the precise 
error of each local sidereal timepiece in order to ascertain the absolute 
sidereal time at each station at the epoch of exchanging time signals. 

A carefully prepared list of twelve stars was chosen for observation 
from the American Ephemeris, the same stars being observed at both 
stations. The star list was divided into two parts of six stars each, 
and each part contained five time stars and one azimuth star. 

Between the halves of the star programme the Western Union Tele- 
graph Company opened direct wire service from the St. Louis to the 
Red River observatories, and with the assistance of expert telegraphers, 
we were able to compare the St. Louis clock with the Red River chro- 
nometer by double electric exchanges consisting of thirty arbitrary 
signals sent in each direction. 

At both observatories, during the observations of the stars, and the 
exchanging of time signals, the beats of the local sidereal timepiece 
were being continuously recorded on the local chronograph sheet; the 
observations of the star transits for each wire of the reticle were 
recorded by the respective local chronographs; the arbitrary exchange 
signals were recorded by hoth chronographs. 

DETERMINATION AND ELIMINATION OF ERRORS. 

1. Clock and chronometer rate to the epoch of exchange: The 
exchange of time signals being made as nearly as possible at the mean 
epoch of the evening's programme, and the reduction of the chro- 
nometer and clock correction being for the mean epoch of the even- 
ing's programme, very little error could arise from even neglecting 
the rate; complete preliminary reductions were made, however, dur- 
ing the entire period of the observations from March 5 to April 7, 
inclusive, and having thus a basis for computing the true chronometer 
rate and the true clock rate for this period, a second reduction was 
made of all the observations in which the rate correction to the actual 
epoch of exchange was introduced. This correction is applied directly 
to the mean observed transit of each individual star, and in this way 
the subsequent corrections apply to the epoch of exchange. The 
reductions herewith are the second or final reductions of the observa- 
tions. 

2. Aberration: The mean observed transit of every star was cor- 
rected for diurnal aberration, the correction being sulDtractive for all 
stars observed at upper culmination as were the stars in our pro- 
gramme. 



THE ONE HUNDEEDTH MEEIDIAN. 13 

The correction is: 

K =0\021 cos <p sec S 

3. Level: The level errors of the horizontal axis of both transits, 
or "J" factors, were obtained every evening from sixteen readings of 
the striding levels; four readings in double direct and reversed posi- 
tion of the level were taken at the beginning and end of each half set 
of the observing programme. 

The zero being at the center of the St. Louis level, and the old 
Wurclemanu level, the factor "5" for these levels is given b}^ the 
equation: 

6=1/8 (:2W-:2E)rf 

The new level was used exclusively at the Red River observatory, 
and as the zero of this level is at the east end " direct," the factor " J" 
is given b}'^ the following equation: 

b=l/8{2Dir.-:S'Rev.)d. 

The above equations are designed for four readings of the level and 
a + value of '•'^" indicates that the west end of the horizontal axis of 
the transit is higher than the east end. 

The mean observed transit of every star was corrected for level, the 
correction being: 

K = h cos {(p—S) =bB 
cosS 

4. Right ascension: The three corrections above having been applied 
to the mean observed transit of every star, the diflerence was then 
taken between the chronometer time of the transit of each star as thus 
reduced and the respective right ascension of the star for the evening, 
this difference being called our "1st approximation" to the chronom- 
eter correction for the evening. 

The very small errors due to the adopted right ascension as taken 
from the Ephemeris were eliminated by observing the same stars at 
both observatories. 

5. Collimation: The transit instruments were both reversed in their 
Y's at the end of the first half of the programme each evening, and the 
second half was observed with the transit in reversed position. The 
five time stars of each half set were so chosen as to make their mean 
position in declination as close as possible to the zenith, thereby 
enabling an almost complete elimination of errors due to azimuth in 
the mean of the five "1st approximations" of the time stars of each 
half set; the collimation error being opposite for each half set we 
determined the "c" factor for the evening by taking the difference 
between the mean " 1st approximations" for each half set and dividing 
this difference by the sum of the mean "C" factors of each half set: 

Mean Mean 
Dir. Rev. 
_lst approx. —1st approx. 



C + C 

Mean Mean 

Dir. Rev. 



The correction is + when the mean fictitious wire of the reticle is 
too far west. Having computed the "c" factor, the correction for 
collimation for each star was given by the equation: 



K=c-^=cC 
cosd 



14 THE ONE HUNDEEDTH MERIDIAN. 

Errors duo to an}^ slight inequality of the pivots of the horizontal 
axis of each transit were also eliminated by the reversal of the transit 
in its Y's between the halves of the evening's observing- programme. 

6. Azimuth: Having solved and applied the collimation correction 
to the 1st approximation of the chronometer correction of each star, 
the result is called "Correction+''i^A;" the azimuth error or "«" fac- 
tor was then computed for each half set by solving an equation involv- 
ing the mean results obtained from the five-time stars as compared with 
a similar result obtained from the slow moving azimuth star of that set: 

Mean of Azimuth 

Time Stars Star 

(Cor+aA) -(Cor+aA) 



A - A 

Mean of Azimuth 

Time Stars Star. 



The correction is -+- when the went end of the axis is too far south. 
The azimuth correction was then computed by the equation: 
K=o sin (ip— 6)=oA 
cos S 

Having applied the azimuth correction given by "«" to the "Cor- 
rection + ffA" of each star, the result is the "chronometer correction'' 
as given by the respective star. 

The mean correction as thus obtained from the ten time stars gave 
the true chronometer correction to be applied to the mean observed 
epoch of exchange of time signals on that evening. 

7. Exchange of time signals: The Western Union Telegraph Company 
were previously informed of the exact moment when we desired to 
exchange our time signals. A few minutes before this moment arrived 
the company cleared the entire circuit for our use, and when all was in 
readiness thirty arbitrary signals, at interv^als of about two seconds, 
were sent from Red River to St. Louis by breaking the main-line cir- 
cuit with the key at Red River. Then thirty similar signals were sent 
from St. Louis to Red River. The sixty signals were recorded by both 
chronographs. 

As the period of sending signals from each station embraced an even 
minute, any slight eccentric chronometric or chronographic errors 
were eliminated, and the mean of so many signals enabled a precise 
calculation of the ''mean epoch of exchange." 

Errors due to transmission time of the electric impulse were elimi- 
nated by taking the mean of the differences of the local sidereal time 
between St. Louis and Red River as given by the signals sent in the 
opposite directions. The signals sent from Red River made the differ- 
ence in longitude appear too great; the signals sent from St. Louis 
made the difference in longitude appear too small. Half the difference 
of the differences as thus obtained is equal to the transmission time. 
The transmission time varies from night to night as a result of the 
weather and other conditions along the thousand miles of wire connect- 
ing the two observatories. 

On April 1 and 7 the circuit was made up via Kansas City and Dal- 
las; on the other nights direct via Dallas. 

The service furnished by the Western Union Telegraph Company 
was perfect in every way and complimentary to the United States. 



THE ONE HUNDREDTH MERIDIAN. 



15 



8. Personal equation: During- the first five observations and exchanges 
Mr. MacConnel observed at Red River and I observed at 8t. Louis. 
We then exchanged places, and Mr. MacConnel conducted the latter 
five observations at St. Louis and I observed at Red River. In this 
manner we eliminated our "relative personal equation" in so far as it 
is possible to do so. It appears from the results, however, that our 
relative personal equation is very small. 

ADJUSTMENTS. 

Preliminary adjustments were made of both transits in order to 
reduce the errors in level, collimation, and azimuth to a minimum 
before commencing to exchange time signals. 

Between March 5 and 14 I readjusted the St. Louis transit in collima- 
tion, and Mr. MacConnel readjusted the Red River transit in azimuth 
and collimation. 

Between March 18 and 26 Professor Lichter, of Washington Uni- 
versity, St. Louis, in undertaking to correct the rather large losing- 
rate of the St. Louis clock caused a greater gaining rate. 

The weather being very mild at Red River between March 26 and 
April 7, the rate of the Red River chronometer was so small as to be 
factorless in the reductions during this period. 

MARCH 5, 1902, KIDDER, ST. LOUIS. 

Levels. 

CLAMP WEST. 



51, o- 





w. 




E. 


Dir. 


10.0 




9.8 


Rev. 


10.8 




9.0 


Rev. 


10.0 




9.5 


Dir. 


9.7 




10.0 


Sum 


40.5 




38.3 


Diff. 




-f2.2 




Vs 




0.275 


d 




0^ 136 


b 




+0.04 

81' 0"- 


CLAMP -EAST. 




w. 




E. 


Dir. 


8.1 




10.0 


Rev. 


12.0 




6.5 


Rev. 


11.6 




6.8 


Dir. 


8.0 




10.0 


Sum 


39.7 




33.3 


Diff. 




+ 6.4 




Vs 




0.8 




d 




0^ 136 


b 




+0.11 





8.3 
11.6 
11.4 



40.1 



10.0 
6.8 
7.0 

10.0 



33.8 



+6.3 
0.787 
0\ 136 

+0.11 



w. 

8.4 
11.0 
11.0 

8.6 

39.0 



10.6 
8.0 
8.0 

10.4 



37.0 



+2.0 
0.25 
0'. 136 

+0.03 



16 



THE ONE HUNDREDTH MERIDIAN. 



MAKCH 5, 1902, KIDDER, 


ST. LOUIS— Continued. 


Clamp West. 




a Aurigae, 5=45° 54^ 


/3 Tauri, 5=28° 32^ 


A=-0. 18 a= - .30 


A=+0.20 a= - .30 


B=+1.43 6= + .05 


B=+l 


.12 fe= + .06 


C=+1.44 C={Z^-11 


C= + l 


« H-:ll 


Chron. T. 


Chron. T. 


h. m. s. 


h. 


m. s. 


5 7 26.9 


5 


18 9.3 


33.4 




14.2 


39.6 




19.1 
24.5 


46.2 




52.6 




29.5 


58.9 




34.6 


8 5.5 




39.6 


5 7 46.16 


5 


18 24.40 


- .12 




- .11 


- .03 




- .02 


+ .07 




+ .07 


-2. 67 




-2.02 


5 7 43.51 


5 


18 22.32 


5 9 28.90 


5 


20 7. 51 


+1 45.39 




fl 45.19 


- .17 




- .13 


1 45.56 




1 45. 32 


+ .05 




- .06 


1 45.51 




1 45. 38 


AfAurigje, 5=32° T 


V Aurigse, 5=39° 7^ 


A+0.12 a= - .30 


A=-0.02 a= - .30 


B+1.17 b= + .07 


B=+l. 


29 6= + .08 I 


c+1.18 c={z':ll 


C=+l. 


- '={--:lt 


Chron. T. 


Chron. T. | 


h. m. s. 


h. 


m. s. 


5 24 24.0 


5 


42 43.6 


29.2 




49.4 


34.3 




55.1 


39.6 




43 1.0 


44.8 




6.5 


50.1 




12.4 


55.6 




18.2 


5 24 39.64 


5 


43 . 0. 89 


- .10 




- .08 


- .02 




- .02 


+ .08 




+ .10 


-2. 11 




-2.30 


5 24 37.49 


5 


42 58.59 


5 26 22.75 


5 


44 43.90 


+1 45.26 




+1 45.31 


- .14 




- .15 


1 45.40 




1 45. 46 


- .04 




+ .01 


1 45.44 




1 45.45 



THE ONE HUNDREDTH MERIDIAN. 



17 



MARCH 5, 1902, 


KIDDER, ST 


1.0UIS— Continued. 


51 Cephei, 5=87° 1 


r 


« 


2 Gemin., 5=32° 6' 


A = -15.36 a= - 


.30 


A= 


=+0. 12 «= — . 30 


B=+13.56 b= + 


.11 


B- 


=+1.17 ?y= + .11 


C=+20.49 c={l 


1.79 
.12 


C= 


=+-« '={--:ll 


Chron. T. 






Chron. T. 


h. m. s. 






h. m. s. 


6 49 19.0 






7 26 24.3 


50 49.8 






29.6 


52 22.0 






35.0 


53 53.5 






40.0 


55 26.0 






45.5 


56 56.9 






50.5 


58 29.6 






55.8 


6 53 53.83 


7 26 40.10 


- .01 






+ .03 


- .34 






- .02 


+ 1.49 






+ . 13 * 


-36. 60 






-2.11 


6 53 18.37 


7 26 38.13 


6 55 6.04 






7 28 23.26 


+1 47.67 


+1 45. 13 


-2.41 






- .14 


+1 50.08 


1 45. 27 








- .04 


1 45.31 




Clamp East. 






?! Cancri, 5=17° 57^ 




// Cancri, 5=20° 46^ 


A=+0.37 a= - 


.135 


A 


=+0.33 a= - .135 


B=+0.98 b= + 


.10 


B 


=+1.02 6= + .09 


C=+1.05 c=|+^ 


.79 
.12 


c 


=+1.07 c={X^-ll 


Chron. T. 






Chron. T. 


h. m. s. 






h. m. s. 


8 4 36.3 






8 25 3.4 


40.8 






7.9 


45.2 






12.7 


50.1 






17.5 


54.8 






22.3 


59.7 






27.0 


5 4.1 






31.5 


8 4 50.20 


8 25 17.47 


+ .07 






+ .09 


- .02 






- .02 


+ .10 






+ .09 


+1.88 






+ 1.91 


8 4 52.23 


8 25 19.54 


8 6 37.86 






8 27 4.95 


+1 45.63 


+ 1 45.41 


+ .12 






+ .13 


1 45. 51 


1 45.28 


- .05 






- .04 


1 45. 56 


1 45.32 


i. Doc. 375 2 









18 



THE ONE HUNDEEDTH MERIDIAN. 



Star 
Factors 



MARCH 5, 1902, KIDDER, ST. 

xCancri, 5=21° 49^ 



A 


=+0.31 


a— — 


. 135 


B 


=+1.03 


6= + 


.08 


C 


=+1.08 


c_/+1.79 
"^-1+ .12 




Chron. T. 






h. m. 


s. 






8 35 


37.4 
42.4 
47.2 
51.9 
56.8 






36 


1.4 
6.3 






8 35 


51.83 
+ .10 

- .02 
+ .08 
+1.93 






8 35 


53.92 






8 37 


39.39 






+1 


45.47 
+ .13 






1 


45.34 
- .04 






1 


45.38 




1 Draconis 


, 5=31° 


46^ 


A= 


= -4.77 


a— — 


.135 


B= 


= +5.09 


b= + 


.06 


C= 


=+6.98 


f+1.79 
'-\+ .12 




Chron 


T. 






h. m. 


s. 






9 19 


46.0 






20 


16.4 
47.3 






21 


17.9 
50.0 






22 


20.4 
51.9 






9 21 


18.56 






+ .15 








- .11 






+ 


.31 






+12.48 






9 21 


31.39 






9 23 


18.26 






+1 


46.87 






+ .81 





1 46. 06 



LOUIS— Continued. 

7 Ursae Maj., 5=48° 26^ 

A =-0.26 a= — .135 
B=+1.47 b= + .07 



Chron. T. 
h. m. s. 

Lost. 
8 50 31.4 
37.6 
44.5 
51.2 
57.9 



Lost. 



8 


50 


44.51 
+ .12 
- .03 

+ .10 
+2.68 


8 
8 


50 

52 


47.38 
33.02 




+1 


45.64 

+ .18 




1 


45. 46 
+ .04 



1 45.42 
M Leonis, 5=26° 28' 

A=+0.23 a= - .135 

B=+1.09 b= + .05 

0=+l.n .={+1;™ 

Chron. T. 
h. m. s. 
9 45 11.6 

16.4 

21.6 

26.1 

31.2 

36.3 

41.3 

9 45 26.33 
+ .18 
- .02 
+ .05 
+1.98 



9 
9 


45 
47 


28.52 
14.01 




+1 


45.49 
+ .13 




1 


45.36 
- .03 



1 45.; 



THE ONE HUNDREDTH MERIDIAN. 19 

MARCH 5, 1902, KIDDER, ST. LOUIS— Continued. 
Computations. 



Star. 



mp W. 






Clamp E. 




1st App. 


c. 


star. 


1st App. 


c. 


m. s. 






m. s. 




+1 45.39 
.19 
.26 
.31 
.13 


+1.44 
1.13 
1.18 
1.29 
1.18 


?i Can. 
?f Can. 
y Can. 
iV.M. 
M Leo. 

Mean 


+1 45. 63 
.41 
.47 
.64 
.49 


+1. 05 
1.07 
1.08 
1.50 
1.11 


1 45. 26 


1.24 


1 45. 53 


1.16 




(l>»45^26)-(i■"45^53) 








""'-^ 1.24 


+ 1.16 








c=-0.12 
c=+0.12 


Clamp W. 
Clamp E. 






"a" 

Clamp West. 

Cor. + aA 


A 


star. 


"a" 

Clamp East. 

Cor.+ oA 


A 


m. s. 






m. s. 




+ 1 45. 56 
.32 
.40 
.46 
.27 


- 0.18 
+ 0.20 
+ 0.12 

- 0.02 
+ 0.12 


?i Can. 
;; Can. 
y Can. 
t U. M. 
/< Leo. 

Mean 


+ 1 45.51 
.28 
.34 
.46 
.36 


+0.37 
+0. 33 
+0.31 
-0.26 

+0.23 


+1 45.40 


+ 0.05 


+1 45.39 


+0.20 


1 50.08 


-15. 36 


1 Drac. 
Diff. 


1 46.06 


-4.77 


- 4.68 


+15.41 


^ 0.67 


+4.97 


_ 


4.68 




—0.67 


a— 


15.41 






4.97 


a= — 


0.30 




a=- 


0.135 



Chronometer corrections. 



a Aurigfe slow 
p Tauri slow 
X Aurigse slow 
V Auriga? slow 
d'^ Gemin. slow 
C^ Cancri slow 
jf Cancri slow 
y Cancri slow 
I Ursfe Maj. slow 
ju Leonis slow 

Mean slow 
Chron. slow 



1 45. 51 
.38 
.44 
.45 
.31 
.56 
.32 
.38 
.42 
.39 

1 45. 42 Epoch 7'> 0"". 

1 45. 40 Epoch of exchange. 



20 



THE ONE HUNDREDTH MERIDIAN. 



MARCH 5, 1903, KIDDEB, ST. LOTTIS— Continued. 

Exchange signals received at St. Louis. 



From Red River. 


From St. Louis. 




From Red River. 


From St. Louis. 


h. 


m. s. 


h. 


m. 8. 




h. 


m. s. 


h. m. s. 


6 


42 11.11 


6 


46 0. 80 




6 


42 47.14 


6 46 37.02 




13.11 




2.87 






49.17 


39. 05 




15.20 




4.92 






51.14 


40.93 




17.15 




6.99 






53.15 


42.90 




19.18 




9.02 






55.14 


45.00 




21.20 




11.00 






57.15 


46.97 




23.20 




13.00 






59.16 


48.90 




25.20 




15.00 






43 1. 17 


50.94 




27.15 




16.85 






3.20 


52.90 




29.18 




18.85 






5.20 


54.83 




31.15 




20.83 






7.22 


56.88 




33.13 




22.95 






9.10 


58. 96 




35.15 
37.14 




25.00 
27.00 














Mean 


6 


42 40.16 


6 46 29.95 




39.11 




28.98 


Chr. slow 


+ 1 45.40 


+ 1 45.40 




41.20 
43.10 




31.00 
33.04 














Correct 


6 


44 25.56 


6 48 15.35 




45.14 




35.02 












MARCH 5, 1902, MAC( 


:ONNEL, 


RED RIVER. 








Let 
CLAMI 


els. 

' WEST. 










5h 0" 








5' 


46m 




Dir. 




Rev. 






Dir. 


Rev. 


w. 


47.3 




2.5 






50.0 


1.5 


E. 


8.5 




42.0 






9.3 


42.0 


W. 


47.0 




2.5 






48.0 


1.7 


E. 


7.8 




42.0 






7.1 


42.2 


Sum 


110.6 




89.0 






114.4 


87.4 


Diff. 


+21. G 








+27.0 


78 




2.70 










3.37 


d 




0^ 111 








0^ 111 


b 




0.30 










0.37 




eh 50" 








71, 


42m 




Dir. 




Rev. 






Dir. 


Rev. 


w. 


54.8 




9.0 






59.0 


7.0 


E. 


7.0 




51.0 






15.1 


51.0 


W. 


57.0 




9.0 






58.1 


6.9 


E. 


14.8 




51.0 






14.1 


50.8 


Sum 


133.6 




120.0 






146.3 


115.7 


Diff. 


+13.6 








+30.6 


Vs 




1.70 










3.82 


d 




0^ 111 








0\ 111 


b 




0.19 


CLAMP 


EAST. 






0.42 




gh 0"o 








91 


50" 




Dir. 




Rev. 






Dir. 


Rev. 


w. 


57.0 




8.1 






53.0 


14.9 


E. 


13.2 




52.0 






22.5 


44.9 


W. 


57.6 




8.0 






53.0 


15.1 


E. 


13.4 




52.0 






22.5 


45.2 


















Sum 


141.2 




110.1 






151.0 


120.1 


Diff. 


+31.1 








+30.9 


Vs 




3.89 










3.86 


d 




OMll 








0^ 111 


b 




0.43 










0.42 



THE ONE HUNDREDTH MERIDIAN. 



21 



MARCH 5, 1902, MACCONNEL, RED RIVER— Continued. 
Clamp West. 

SlCephei, 5=87° 12' 



Star 


X Aurigfe, 5=32° T 


Factors 


A=+0.04 a=+1.35 
B=+1.18 fe=+ .34 
C=+1.18 c=+ .28 


Wires. 


Chron. T. 


1 
2 
3 
4 
5 


h. m. s. 
5 23 47.1 

24 13.6 
38.9 

25 5.3 
30.7 



5 24 



39.12 
-.03 
-.02 
+.40 



39.47 

22.75 



+1 



43.28 
+.34 



42.94 
+0.5 



1 42.89 




a' Gemin., 5=32° 6' 




A=+0.04 a=+l 


35 


B=+1.18 h= + 


.29 


C=+1.18 c= + 


.28 


Chron. T. 




h. m. s. 




7 25 47.9 




26 13.7 




39.1 




27 5.8 




31.5 




7 26 39.60 




+.05 




-.02 




+ .34 





7 26 

7 28 


39.97 
23.25 


+1 


43.28 
+.34 


1 


42.94 
+.05 



A=-16.32 «=+1.35 
B= + 12.38 6=+ .24 
C=+20.49 c=+ .28 

Chron. T. 
h. m. 8. 

6 38 33.9 
46 8.1 
53 30.7 

7 1 14. 6 
8 36.0 


6 


53 36.66 
+ .03 
- .35 

+2.97 


6 
6 


53 39.31 
55 6. 03 


+1 26.72 

+5.82 



1 20. 90 



/? Gemin., 5=28° 16' 



A=+0.12 a=+1.35 
B=+1.13 6=+ .34 
C=+l. 13' c=+ .28 

Chron. T. 
h. m. s. 
7 36 47.7 

37 12. 7 
37.2 

38 3.2 
27.4 


7 


37 37.64 
+.06 
-.02 
+.38 


7 
7 


37 38,06 
39 21.55 


+1 43. 49 
+.32 


1 43. 17 
+ .16 



1 42.89 



1 43.01 



22 



THE ONE HUNDREDTH MERIDIAN. 



Star 
Factors 



MARCH 5, 1902, MACCONNEL, RED RIVER— Continued. 
Clamp Ead. 
C Cancri, 5 = 17° 57^ 



A=+0. 30 o =+1.30 
B=+1.01 6=+ .43 
C=+1.05 c = - .28 



Chron. T. 


h. m. 


s. 


8 4 


8.5 




31.1 




55.0 


5 


17.5 




40.6 


8 4 


54.54 




+.08 




-.02 




+.43 


8 4 


55. 03 


8 6 


37.86 


+1 


42.83 




-.30 


1 


43.13 




+.39 


1 


42.74 


;' Cancri, 


5=21° 49' 


A=+0.24 


a=+1.30 


B=+1.05 


fe=+ .43 


C= + 1.08 


c=- .28 


Chron 


. T. 


h. m. 


s 


8 35 


8.9 




32.2 




56.4 


36 


19.6 




43.4 


8 35 


56.08 




+.10 




-.02 




+.45 


8 35 


56. 61 


8 37 


39.39 


^■1 


42.78 




-.31 


1 


43.09 




+.31 


1 


42.78 



r/ Cancri, 5=20° 46' 

A=+0.26 a =+1.30 
B = + 1.04 h=+ .43 
C=+1.07 c = - .28 



Chron 


T. 


ti. 


m 


J. 


8 


24 


34.6 
57.6 




25 


22.1 
45.0 




26 


8.7 


8 


25 


21.60 
+ .09 
-.02 

+.45 


8 


25 


22.12 


8 


27 


4.95 




+ 1 


42.83 
-.30 




1 


43.13 
+.34 



r UrsaeMaj., 5=48° 26' 



A=-0.36 a=4-1.30 
B=+1.45 b=+ .42 
C= + 1.49 c=- .28 

Chron. T. 
h. m. s. 
8 49 44.2 

50 16.6 
50.5 

51 23.5 
56.4 


8 


50 50.24 
+.11 
-.03 
+ .64 


8 
8 


50 50.96- 
52 33.02 


+1 42. 06 
-.42 


1 42. 48 

-.47 




1 42. 95 



THE ONE HUNDREDTH MERIDIAN. 



23 



MARCH 5, 1902, MACCONNEL, BED RIVER— Continued. 



Star 



1 Draconis, 5=81° 46^ 



// Leonis, 



=26° 28' 



Factors 


A=— 5.13 o =+1.30 
B=+4.73 6=+ .42 

C=+6.98 c=— .28 


A = 
B= 

= 


= +0 

=+1 
= + 1 


.16 
10 
11 


a=+1.30 
6=+ .42 
c=— .28 




Wires. 




Chron. T. 




Chroi 


. T. 




1 
2 
3 
4 

5 


h. 
9 

9 

9 
9 


m. s. 
16 36.5 
19 6.8 
21 43. 5 
24 15.0 
26 48.0 


outations. 


h. 
9 


m. 
44 
45 

46 


s. 
41.4 

5.5 
31.0 
55.0 
19.9 




Mean 
Rate 
Aber. 
6B 


21 41. 96 
+ .13 
— .11 
+2.04 


9 


45 


30.56 

+ .14 
—.02 

+ .47 




RA 


21 44. 02 
23 18. 26 


9 
9 


45 
47 


31.05 
14.01 




1st App. 
cC 


+1 34.24 
— 1.98 




+1 


42.96 
—.32 




Cor.+aA 
aA 


1 36.22 

Comi 




1 


43.28 

+.21 




Slow 




1 


43.07 




Star. 


Clamp West. 

1st App. C. 


"c" 
Star. 




Clamp East. 
Ist App. 


C. 




m. 


s. 






IE 


s. 




X Aur. 
a' Gem. 
(i Gem. 


+ 1 


43.28 +1.18 
. 28 1. 18 
.49 1.13 


Z' Can. 
7f Can. 
r Can. 
tU. M. 
M Leo. 




+ 1 


42.83 
.83 
.78 
.06 
.96 


+1.05 
1.07 
1.08 
1.49 
1.11 


Mean 


1 


43.35 +1.16 


1 


42.69 


+1.16 






(l■»43^c 

'- l.K 


>5)_(lm42s_ 

) + 1. 16 


69) 












c=+0.2 
c=-0.2 


B Clamp W 
i Clamp E. 


• 








Star. 


Clamp West. 
Cor.+aA. A 


star. 




Clamp East. 
Cor.+oA. 


A 




m. 


s. 






m. s. 




X Aur. 
d^ Gem. 
(i Gem. 


+1 


42.94 + 0.04 
42.94 + .04 
43.17 + .12 


Z' Can. 
?7 Can. 
r Can. 
zU. M. 
M Leo. 

Mean 




+ 1 


43.13 
43.13 
43.09 
42.48 
43.28 


+0.30 
+ .26 
+ .24 
- .36 
+ .16 


Mean 


1 


43. 02 + . 07 


1 


43.02 


+ .12 


51 Ceph. 


1 


20.90 -16.32 


1 Drac. 
Diff. 




1 


36.22 


-5.13 


Diff. 


+22. 12 +16. 39 




+6.80 ' 


+5.25 






+22. 12 
"~ 16. 39 








+6.80 
" 5.25 






a=+ 1.35 








a=+1.30 



24 



THE ONE HUNDEEDTH MERIDIAN. 



MARCH 5, 1902, MACCONNEIi, BED RIVER— Continued. 

Chronometer corrections. 



if'rova Red River. 



3 1.40 



3.50 
6.48 
7.50 
9.50 
11.50 
13.50 
15.50 
17.50 
19.50 
21.50 
23.43 
25.50 
27.50 
29.47 
31.50 
33.45 
35.46 
37.45 



X Aurigae slow 




1 42. 89 






a? Gemin. slow 


42.89 






13 Gemin. slow 


43.01 






C' Cancri slow 


42.74 






rf Cancri elow 


42.79 






;' Cancri slow 


42.78 






t Ursse Maj. slow 


42.95 






fi Leonis slow 


43.07 


Epoch of 




Mean slow 


1 42.89 


exchange. 


hange signals received at Red River. 




From St. Louis. 


From Red River. 


Prom St. Louis. 


h. m. s. 


h. 


m. s. 


h. m. s. 


6 6 51.20 




6 


3 39.50 


6 7 29.50 


53.30 






41.48 


31.34 


55.32 






43.50 


33.32 


57.40 






45.50 


35.40 


59.48 






47.50 


37.38 


7 1.40 






49.50 


39.35 


3.47 






51.60 


41.35 


5.43 






63.60 


43.34 


7.30 






65.60 


45.37 


9.36 






57.53 


47.30 


11.27 






59.46 


49.38 



13.36 
15.40 
17.43 
19.39 
21.42 
23.47 
25.42 
27.43 



Mean 6 3 

Chr. slow + 1 



30.49 
42.89 



Correct 6 
St. Louis 6 



13.38 
25.56 



1 7 20.38 
+ 1 42. 89 



6 9 3. 27 
6 48 15.35 



Mean, 39-" 12M3, March 5, 1902, St. 



Diff. 39 12.18 

Louis to Red River. 



12.08 



MARCH 14, 1902, KIDDER, ST. LOUIS. 



Levels. 

CLAMP WEST. 



Dir. 


7.8 


Rev. 


9.9 


Rev. 


10.0 


Dir. 


8.8 


Sum 


36.5 


Diff. 




v« 




d 




b 





7.8 
5.9 
5.8 
7.0 

26.5 



+10.0 
1.25 
0'. 136 
.17 



CLAMP EAST. 



Dir. 
Rev. 
Rev. 
Dir. 

Sum 
Diff. 



w. 

8.1 
10.0 
10.1 

9.0 



9h 15m 



7.6 

5.7 
6.8 
7.0 



37. 2 26. 

+11.1 
1.388 
0^ 136 
.19 



w. 


E. 


8.8 


7.0 


10.5 


5.3 


10.5 


5.3 


8.8 


7.0 


38.6 


24.6 




+14.0 




1.75 




0^ 136 




.24 




IC 25" 


W. 


E. 


9.1 


7.0 


9.7 


6.8 


9.7 


6.8 


9.5 


7.0 


38.0 


27.6 




+10.4 




1.3 




0^ 136 




.18 



THE ONE HUNDKEDTH MERIDIAN. 



25 



MARCH 14, 1902, KIDDER, ST. liOITIS— Continued. 



Clamp West. 



51 Cephei, 5=87° 12^ 



Gemin. 



:22° 10' 



A=-15.36 a=- 


41 


A= 


=+0.30 a=-.41 


B=+13. 


56 6= + 


18 


B. 


=+1.03 6=+. 19 


C=+20. 


49 c=+ 


16 


C= 


=+1.08 c=+.16 


Chron. 


T. 






Chron. T. 


h. m. 


8. 






h. m. s. 
7 12 5. 8 


6 49 


50.4 






10.7 


51 


20.7 






15.3 


52 


54.0 






20.1 


54 


22.6 






25.0 


55 


56.3 






29.9 
34.9 


6 52 


52.80 


7 12 20.34 




- .13 






-.11 




- .34 






-.02 




+2.44 






+.20 


6 52 


54.77 


7 12 20.41 


6 55 


2.34 






7 14 18.30 


+2 


7.57 


+1 57.89 




+3.28 






+.17 


2 


4.29 


1 57.72 










—.12 


1 57. 84 


a* Gemin., 5=32° 


a,' 


/J Gemin., 5=28° 16' 


A=+0.12 a=- 


41 


A = 


=+0.20 a=-.41 


B=+l. 


17 6= + 


20 


B= 


=+1.12 6=+. 21 


C=+1.18 c=+ 


16 


C= 


= +1.13 c=+.16 


Chron. 


T. 






Chron. T. 


h. m. 


s. 






h. m. s. 


Lost 








7 37 7.8=23.1 
13.1 
18.0 


7 26 


24. 6=24. 6 




23.1 




30. 0=24. 8 




28.2 




35.7=25 


2 




33.1 




40. 6=24 


7 




Lost. 


7 26 


24.82 




7 37 23.10 




-.10 






-.08 




—.02 






-.02 




+.23 






+.24 


7 26 


24.93 


7 37 23.24 


7 28 


23.10 






7 39 21.41 


+1 


58.17 


+1 5^.17 




+ .19 






+.18 


1 


57.98 


1 57.99 




-.05 






-.08 


1 


58.03 


1 58. 07 



26 



THE ONE HUNDREDTH MERIDIAN. 



MARCH 14, 1902, KIDDER, ST. LOUIS— Continued. 



Star 
Factors 



C=Cancri, 5=17= 



7] Cancri, 5=20° 46' 



A=+0.37 a = — 


.41 


A 


=+0.33 a =-.41 


B=+0.98 6=+ 


22 


B 


=+1.02 fe =+.23 


C=+1.05 c = + 


.16 


C 


=+1.07 c=+.16 


Chron. T. 






Chron. T. 


h. m. s. 






h. m. s. 


8 4 25.6 






8 24 52.3 


30.1 






57.0 


34.8 






25 1.8 


39.3 






6.7 


44.1 






11.4 


48.8 






16.1 


53.7 






21.1 


8 4 39.49 


8 25 6.63 


-.06 






-.04 


-.02 






-.02 


+.22 
8 4 39.63 






+.23 


8 25 6.80 


8 6 37.74 






8 27 4.85 


+1 58.11 


+1 58.05 


+.17 




~ 


+.17 


1 57.94 


1 57. 88 


-.15 






-.14 


1 58. 09 


1 58. 02 




Clamp East. 






1 Draconis, 5=81° 


W 


e 


Leonis, 5=24° 14' 


A=-4.77 a=- 


41 


A 


=+0.27 a=-.41 


B=+5.09 ft=+ 


19 


B 


=+1.06 6=+. 19 


C=+6.98 c = - 


16 


C 


=+1.09 c=-.16 



19 45.0 

20 47.3 

21 18.0 
49.3 



Chron. T 
h. m. 
9 38 



Lost. 



Lost. 





22 


50.4 


9 


21 


18.00 
+ .03 
- .11 

+ .97 


9 
9 


21 
23 


18.89 
17.69 




+1 


58.80 
-1.12 



7.2 
12.2 
17.1 
22.1 
26.9 
31.8 
36.6 



1 59.92 



9 


38 


2L99 
+.04 
-.02 

+ .20 


9 
9 


38 
40 


22.21 
19.88 




+ 1 


57.67 

-.17 




1 


57.84 
-.11 



1 57. 95 



THE ONE HUNDREDTH MERIDIAN 
MARCH 14, 1902, KIDDER, ST 



27 



star 


jii Leo 


nis, (5 = 


26° 28^ 




Factors 


A 


=+0.23 a=- 


41 




B 


=+1.09 fe= + 


19 




c 


=+1.11 c=- 


16 


Wires. 




Chron 
h. m. 


T. 




1 
2 
3 
4 
5 
6 




9 45 


1.2 
6.2 
11.1 
16.1 
21.2 
26.0 




7 






31.1 




Mean 


9 45 


16. 13 




Rate 






+.05 




Aber. 






-.02 




bB 






+.21 





Cor. 
aA 



Slow 



9 45 
9 47 


16.37 
13.97 


+1 


57.60 

-.18 


1 


57.78 
-.10 



1 57. 88 

AUrs«Maj., 5=43° 24^ 

A = -0. 12 a=-.41 
B =+1.37 6=+. 18 
C=+1.38 c=-.16 



Chron. T. 

L m. s. 

) 8 57.5 

9 3.9 

9.8 

16.0 

22.1 

28.1 

34.4 



10 


9 


15.97 
+.08 
-.02 

+.25 


10 
10 


9 
11 


16.28 
14.14 




+ 1 


57.86 
-.22 




1 


58.08 
+.05 



LOUIS— Continued. 

a Leonis, 5=12° 27' 



A=+0.45 a=- 


41 


B=+0.92 6= + 


18 


C=+1.03 c=- 


16 


Chron. T. 




h. m. 


s. 




10 1 


0.0 
4.8 
9.2 
13.9 
18.5 
23.5 
27.5 




10 1 


13.89 
+.06 
-.02 
+.16 




10 1 


14.09 




10 3 


11.68 




+1 


57.59 
-.16 




1 


57.75 
-.18 




1 


57.93 




Leo. Min 


, 5=37° 


13' 



A=+0.02 a--. 41 
B=+1.25 fe=+.18 
C=+1.25 c=-.16 



Chron. T 
h. m. 
10 20 



0.7 
6.3 
12.0 
17.8 
23.3 
28.9 
34.6 



10 20 17.66 
+.09 
-.02 

+.22 



10 20 
10 22 


17.95 
15.80 


+1 


57.85 
-.20 


1 


58.05 
-.01 



1 58. 03 



1 58.06 



28 



THE ONE HUNDEEDTH MERIDIAN. 



MARCH 14, 1902, KIDDER, ST. LOUIS— Continued. 
Comjmtations. 





Clamp West. 






Clamp East. 




Star. 


1st App. 
m. s. 


c. 


Star. 


1st App. 
m. s. 




d Gem. 


+1 57.89 


+1.08 


E Leo. 


+1 57.67 


+L09 


a^ Gem. 


58.17 


1.18 


// Leo. 


.60 


Lll 


/i Gem. 


58.17 


1.13 


a Leo. 


.59 


1.03 


?! Can. 


58.11 


1.05 


AU.M. 


.86 


1.38 


7/ Can. 


58.05 


1.07 


fi Leo. M. 
Mean 


.85 
+1 57.71 


1.25 


Mean 


+1 58.08 


+1.10 


+L17 






(l°'58^ 


08)-(l'"57' 


71) 








1.10 + 1.17 







"a" 

Clamp West. 

Cor. +aA 



:+. 16 Clamp West. 
=—.16 Clamp East. 



"a" 

Clamp East 

Cor. +aA 



S Gem. 
a^ Gem. 
fd Gem. 
C' Can. 
1^ Can. 

Mean 

51 Ceph. 

Diff. 



+1 57. 72 + 0. 30 
.98 + 0.12 
.99 + 0.20 
+ 0.37 
+ 0.28 



.94 



+1 


57.90 




+2 


4.29 






-6.39 






-6. 


39 



+ 0.26 
-15. 36 
+15. 62 



15.62 
i=-.41 



s Leo. 
/< Leo. 
a Leo. 
AU. M. 
/J Leo M. 

Mean 

1 Drac. 

Diff. 



+1 57.84 
57.78 
57.75 
58.08 
58.05 



+1 


57.90 


1 


59.92 




—2.02 




-2.02 
a= — 



4.94 
41 



+0.27 
+0.23 
+0.45 
-0.12 
+0.02 

+0.17 

-4.77 
+4.94 



Chronometer corrections. 



d Gemin. slow 


1 57. 84 


a'' Gemin. slow 


58.03 


yS Gemin. slow 


58.07 


C* Cancri slow 


58.09 


y Cancri slow 


58.02 


s Leonis slow 


57.95 


M Leonis glow 


57.88 


a Leonis slow 


57.93 


A Ursae Maj. slow 


58. 03 


/3 Leo. Min. slow 


58.06 


Mean slow 


1 57.99 


Chron. slow 


1 57.98 



1 57. 98 at epoch of exchange. 



THE ONE HUNDEEDTH MERIDIAN. 



29 



MARCH 14, 1902, KIDDER, ST. LOUIS— Continued. 

Exchange signals received at St. Louis. 



"rom Red River. 


From St 


Louis. 




From Red River. 


From SI, 


Louis. 


h. m. 


s. 


h. 


m. 


s. 




h. 


m. 


s. 


li. 


m. 


8. 


8 50 


59.40 


8 


53 


0.65 




8 


51 


35.41 


8 


53 


36.60 


51 


1.40 

3.35 

5.40 

7.44 

9.40 

11.40 

13.38 

15.40 

17.40 

19.40 

21.41 

23.41 






2.67 

4.70 

6.75 

8.70 

10.58 

12.80 

14.60 

16.60 

18.60 

20.62 

22.54 

24.50 








37.40 
39. 40 
41.40 
43.40 
45.35 
47.38 
49.38 
51.42 
53.42 
65.37 
57.20 






38.70 
40.60 
42.54 
44.50 
46.40 
48.40 
50.40 
52.40 
54.48 
56.45 
58.50 


















25.40 






26. 50 


Mean 


8 


51 


28.39 


8 


53 


29.56 




27.40 






28.54 


Chr. slow 


+ 1 


57.98 


+ 1 


57.98 




29.35 






30.45 
































31.38 






32.48 


Correct 


8 


53 


26.37 


8 


55 


27.54 




33.40 






34.55 

















MARCH 14, 1902, MACCONNEL, RED RIVER. 

Levels. 

CLAMP WEST. 



w. 


50.4 




21.0 


E. 


18.0 




53.5 


W. 


51.5 




20.6 


E. 


18.8 




53.2 


Sum 


138.7 




148.3 


Diff. 




-9. 


6 


Vb 




1. 


2 


d 




0^ 


111 


h 




-0.13 








CLAMP EAST 




9i> 10° 






Dir. 




Rev. 


W. 


54.0 




17.3 


E. 


19.0 




52.2 


W. 


53.0 




17.0 


E. 


18.0 




52.0 


Sum 


144.0 




138.5 


Diff. 




+6.5 


Vb 






81 


d 




0^ 


.111 


b 




+0.09 



51.5 


18.9 


17.0 


53.5 


53.2 


18.5 


18.5 


63.4 


L40.2 


144.3 




-4.1 




0.51 




0^ 111 




- .06 



64.0 


15.0 


18.0 


61.0 


65.1 


16.3 


19.0 


51.2 


L46.1 


132.5 




+13.6 




1.7 




0^ 111 




+0.19 



30 



THE ONE HUNDKEDTH MERIDIAN. 



MARCH 14, 1902, MACCONNEL, 


Clamp West 


Star 51 Cephi, 5=87° 12' S 


Factors 


A=-16.32 a=+.24 
B=-rl2.38 6=-. 12 
C=+20.49 c= Cor. 


Wires. 


Chron. T. 



RED RIVER— Continued. 



Gemin., 5=22° 10' 

A=+0.23 a=+.24 
B=+1.05 fc=-.10 
C=+1.09 r = +.02 



1 
2 
3 
4 
5 

Mean 
Rate 
Aber. 
6B 



RA 

1st App. 
cC 

Cor.+oA 
«A 

Slow 

Star 

Factors 



1 
2 
3 
4 
5 

Mean 
Rate 
Aber. 



RA 

1st App. 
cC 

Cor.+aA 
aA 

Slow 



6 


38 


19.2=6 


53 15. 8 




45 


41.3= 


20.4 




53 


24.1 = 


30.3 


7 


1 


8.1 = 


29.0 




8 


28.2= 


31.6 


6 


53 


24.20 

- .05 

- .35 
-1.48 




6 


53 


22.32 




6 


55 


2.34 






+1 


40.32 
0.00 





11 46.9 

12 10.5 
34.1 
58.3 

13 21.3 



1 40. 02 
I Wires 1 and 2 CI. E. 

lWires3,4,and5Cl.W. 

a? Gemin., 5=32° 6' 

A=+0.04 a=+.24 
B=+1.18 6=-. 09 
C =+l. 18 c=+.02 

Chron. T. 
h. m. s. 
7 25 47.4 

26 13.5 
38.9 

27 5.6 
31.4 



7 26 


39.36 
-.03 
-.02 
-.11 


7 26 
7 28 


39. 20 
23.10 


+1 


43.90 
+.03 


1 


43.87 
+.01 



7 12 


34.22 
-.04 
-.02 
-.10 




7 12 
7 14 


34.06 
18.30 




+1 


44.26 

+.02 




1 


44.24 
+.06 




1 44. 18 

Gemin., 5=28° 16' 

A=+0.12 a= + . 
B=+1.13 h=- 
C=+1.13 c= + 

Chron. T. 
h. m. s. 
7 36 49.6 

37 12.7 
37.0 

38 2.6 
27.1 


24 
08 
02 


7 37 


37.40 
-.02 
-.02 
-.07 




7 37 
7 39 


37.39 
21.41 




+1 


44.02 

+.02 




1 


44.00 
+.03 





1 43.86 



1 43.97 



THE ONE HUNDKEDTH MEEIDIAN. 31 

MARCH 14, 1902, MACCONNEL, BED RIVER— Continued. 
CiCancri, 5=17°57' 



Star 
Factors 



Wires. 



3 

4 
5 

Mean 
Kate 

Aber. 
6B 



RA 

1st App. 
cC 

Cor.+aA 
ak. 

Slow 



A=4-0.30 ( 
B=+1.04 I 
C=+1.07 

Chron. T. 



+.24 
-.07 
+.02 



7.6 
30.9 
53.6 
17.2 



8 4 


53.84 
-.00 
-.02 
-.07 


8 4 
8 6 


53.75 
37.74 


+1 


43.99 
+.02 


1 


43.97 

+.07 



1 43. 90 



RA 

1st App. 
cC 

Cor.+flA 
ah. 

Slow 







Clamp 


East 






1 Draconis, 5=81° 46 


' 






t 


Leonis, 5=24° 14 


A=-5.13 a=- 
B=+4.73 6= + 
C=+6.98 c=- 


03 
10 
02 






A = 
C= 


=+0.20 a=-.03 
=+1.09 6=+. 11 
=+1.10 c=-.02 


Chron. T. 

h. m. s. 

9 16 28.0 
18 57.3 
21 35.3 
24 6.4 
26 39.3 










Chron. T. 
h. m. s. 
9 37 47.7 

38 11.2 
35.9 
59.6 

39 23.8 



9 21 


33.26 
+ .05 
-.11 

+.47 


9 21 
9 23 


33.67 
17.69 


+1 


44.02 
-.14 



1 44. 16 



9 38 


35.64 
+.06 
-.02 

+.12 


9 38 
9 40 


35.80 
19.88 


+1 


44.08 
-.02 


1 


44.10 
-.01 



1 44.11 



32 



THE ONE HUNDREDTH MERIDIAN. 



MARCH 14, 1902, MACCONNEL, RED RIVER— Continued. 



ix Leonis, 5=26° 28^ 



a Leonis, <5=12° 21' 



Factors 



A=+0. 16 
B=+1.10 
C=+l.ll 



a= — 



A=+0.38 a=- 
B=+1.03 6= + 
C =+1.04 c=- 



Chron. T. 



1 
2 
3 
4 
5 

Mean 
Rate 
Aber. 
6B 



RA 

1st App. 
cC 

Cor.+aA 
ah. 

Slow 



46 



40.9 

4.7 

30.0 

54.0 

18.7 



10 



9 


45 


29.66 
+.06 
—.02 

+.13 


9 
9 


45 

47 


29.83 
13.97 




+1 


44.14 
-.02 




1 


44.16 
.00 



42.8 

1 4.7 
27.7 
50.0 

2 12.5 



10 1 


27.54 
+.08 
-.02 
+.14 


10 1 
10 3 


27.74 
11.68 


+1 


43.94 
-.02 


1 


43.96 
-.01 



1 44.16 



1 43.97 



Star A Ursae Maj., 



=43° 24^ 



/i Leo. Min., 5=37° 13^ 



Factors 


A= 


=-0.22 


a=- .03 




B= 


=+L36 


6=+ .15 




(J = 


=+1 


38 


c=- .02 


Wires. 






Chron. T. 






h. 


m 


8. 


1 




10 


8 


29.8 


2 








59.2 


3 
4 

5 






9 
10 


30.6 

0.0 

30.2 


Mean 


10 


9 


29.96 


Rate 








+.08 


Aber. 








-.02 


6B 








+.20 




10 


9 


30.22 


RA 




10 


11 


14.14 


1st App. 




+1 


43.92 


cC 








-.03 


Cor.+aA 




1 


43.95 


aA 








+.01 



Slow 



1 43.94 



A= 


= -0.06 


a=— . 


03 


B= 


=+1.25 


h=^ . 


16 


C = 


=+1.25 




02 




Chron. T. 






h. m 


s. 






10 19 


37.1 






20 


3.8 
31.9 
59.0 






21 


26.5 






10 20 


31.66 
+.09 
-.02 
+.20 






10 20 


31.93 






10 22 


15.80 






+1 


43.87 
-.03 






1 


43.90 
.00 






1 


43.90 





THE ONE HUNDREDTH MERIDIAN. 33 

MAK-CH 14, 1902, MACCONNEL, BED RIVER— Continued. 
Cominitations. 



Clamp West. 
1st App. 


c. 


star. 


Clamp East. 
1st App. 

m s. 


G. 


+1 44. 26 
43.90 
44.02 
43.99 


+1.09 
1.18 
1.13 
1.07 


E Leo. 
jii Leo. 
a Leo. 
X U. M. 
/i L. M. 

Mean 


+1 44. 08 
44.14 
43.94 
43.92 
43. 87 


+ 1.10 
1.11 
1.04 
1.38 
1.25 


+1 44.04 


+1.12 


+1 43.99 


+1.18 




(l™44^04)-(l"»43^99) 
^- 1.12 + 1.18 







c=+0.02 Clamp West, 
c^— 0. 02 Clamp East. 



Clamp West. 








Clamp East. 




Cor.+aA. 


A. 


star. 


Cor.+aA. 




m. s. 
+1 44. 24 
43.87 


+ 


23 


£ Leo. 


m. s. 
+ 1 44. 10 


+ .20 


+ 


04 


/I Leo. 


44.16 


+ . 16 


44.00 


+ 


12 


a Leo. 


43.96 


+ .38 


43.97 


+ 


30 


AU.M. 


43.95 










fd L. M. 
Mean 


43.90 


— .06 


+1 44. 02 


+ 


17 


+1 44.02 


+ .09 


1 40. 02 


-16 


32 


1 Drac. 
Diff. 


+ 1 44. Ki 
- 0.14 


-5. 13 






+ 4.00 


+16 


.49 


+5.22 


4.00 








-0.14 




"- 16.49 








"- 5.22 




a=+0. 24 








a=-0.03 





Chronometer corrections. 



d Gemin. slow 
a? Gemin. slow 
/3 Gemin. slow 
Q Cancri slow 
£ Leonis slow 
jj. Leonis slow 
a Leonis slow 
X Ursfe Maj. slow 
/J Leo. Min. slow 



44.18 
43.86 
43.97 
43.90 
44.11 
44.16 
43.97 
43.94 
43.90 



Mean slow 1 44.00 F.poch of exchange, 



H. Doc. 375- 



3i 



THE ONE HUNDEEDTH MERIDI^^ 



VN. 



MABCH 14, 1902, MACCONNEL, RED MVER-Continue.l. 



Exchange signals received at Red Ri 



From Red River. 


From St. Louis. 




h. m. s. 


h. m 


s. 




8 12 1.50 


8 14 


2.85 




3.45 




4.90 




5.42 




6.88 




7.50 




8.95 




9.50 




10.92 




11.50 




12.80 




13.50 




14.98 




15.48 




16.85 




17.48 




18.80 




19.48 




20.80 




21.48 




22.83 




23.50 




24.76 




25.50 




26.70 


Mean 


27.50 




28.70 


Chr. sloM 


29.45 




30.73 




31.45 




32.65 


Correct 


33.47 




34.70 


St. Louis 


35. 50 




36.78 




37. 50 




38.82 


Diff. 



Mean 



1 1^835, March 14, 1902. Rt 



From Red River. 


From St, Louis. 


h. m. s. 


h. 


m. 


s. 


8 12 39.50 


8 


14 


40.90 


41.48 






42.81 


43.48 






44.76 


45.50 






46. 73 


47.45 






48.60 


49.48 






50.65 


51.48 






52.62 


53.50 






54.65 


55.50 






56.70 


57.48 






58.68 


59.30 






60.70 



8 12 

+ 1 



30.47 
44.00 



14.47 
26. 37 



39 11.90 



Louis to Red River. 



8 14 31.77 
+ 1 44.00 



8 16 15.77 
8 55 27.54 



39 11. 77 



Dir. 
Eev. 
Eev. 
Dir. 

Sum 
Diff. 



Dir. 
Rev. 
Rev. 
Dir. 

Sum 
Diff. 

I' 

b 



MABCH 16, 1902, KIDDER, ST. LOUIS. 

Lerel.^. 
('LAMP WEST. 



W. 

9.7 
10.8 
11.0 



61- 35" 



41.4 



E. 

6.1 
5.0 

4.8 
6.1 

22.0 



+19.4 
2.425 
0^ 136 

+ 0.33 



CLAMP EAST. 



W. 

10.7 
11.7 
11.8 
11.9 



9h lOm 



46.1 



E. 
6.3 
5.2 
5.2 
5.3 

22.0 



+24.1 
3.01 
0^ 136 

+ 0.41 



w. 

10.4 
11.8 
11.8 
11.0 



8h lOm 



6.3 
5.0 
5.0 

5.8 



45.0 22 1 

+22.9 
2.862 
0^ 136 

+ 0.39 



W. 

12.6 
10.9 
ILO 
12.5 



47.0 



E. 
5.4 
7.1 
7.0 
5.9 

25.4 



+ 21.6 

2.7 

0^ 136 
+ 0.37 



THE ONE HUNDREDTH MERIDIAN. 



85 



MARCH 16, 1902, KIDDER, ST. L.OTJIS— Continued. 



Clamp W( 



51 Cephei, 5=87° 12^ 



Gemin., 5=22° 10^ 



A=-15.36 


a — — 


16 


A= 


=+0.30 a=-. 16 


B=+13.56 


h = + . 


34 


B= 


=+1. 


03 6=+. 35 


C= + 20.49 


f= + . 


246 


C= 


=+1.08 c=+.246 


Chroi 


. T. 






Chron. T. 


h. m. 


s. 






h. 


m. s. 


6 48 


12.9 






7 


12 3.0 


49 


49.4 








8.0 


51 


18.4 








12.6 


52 


48.7 








17.3 


54 


21.2 








22 2 


55 


50.6 








27.1 


57 


26.3 








32.0 


6 52 


49. 64 


7 


12 17. 46 




- .13 








-.11 




- .34 








-.02 




+4.61 








+.36 


6 52 


53. 78 


7 


12 17.69 


6 55 


1.59 






7 


14 18.27 


+2 


7.81 




+2 0.58 




1 5. 04 






- 


.+.26 


9 


2.77 


2 0.32 












-.05 



0.37 



a^ Gemin., 5=32° 6' 



^ Gemin., 5=28° 16^ 



Cor. +aA 
aA 



A=+0.12 a=-. 


16 


B=+l 


.17 ft= + 


36 


C=+l 


.18 c=+. 


246 


Chron. T. 




h. 


m. s. 




7 


26 6.5 
11.9 
16.8 
22.0 
27.3 
32.6 
37.9 




7 


26 22.14 

- .10 

- .02 

+ .42 




7 


26 22.44 




/ 


28 23.07 






+2 0. 63 






+ .29 






2 0.34 






- .02 





A =+0.20 


a=-. 16 


B=+l 


12 


6=+. 37 


C=+l 


13 


c=+.246 


Chron 


. T. 


h. 


m. 


s. 


7 


37 


5.1 
10.6 
15.2 
20.4 
25.4 
30.3 
35.8 


7 


37 


20.40 
-.08 
-.02 
+.41 



7 37 
7 39 


20.71 
21.38 


+2 


0.67 

4.28 


2 


0.39 
-.03 



0.36 



36 THE ONE HUNDKEDTH MEKIDIAN. 

MARCH 16, 1902, KIDDER, ST. LOUIS— Continued. 



26 Lyncis, S = 


=47° 49^ 




C'Cancri, (5 = 17° 57 


A=-0. 23 


a= — 


16 


A= 


=+0.37 a=- .16 


B=+l. 


47 


6= + 


38 


B= 


=+0.98 = + .39 


C= + l. 


49 


c=4- 


246 


C= 


=+1.05 f=+ .246 


Chron 


T. 






Chron. T. 


h 


m 


s. 






h. m. s. 


7 


45 


16.1 
23.0 
29.7 
35.7 

42.7 
49.7 






8 4 22.6 
27.6 
32.0 
36.9 
41.6 
46.3 




45 


56.2 
36.16 






50.8 


7 


8 4 36.83 






-.08 






-.06 






-.03 






-.02 






+.54 






+ .37 



7 45 
7 47 


36.59 
37.38 


+2 


0.79 

+.37 


2 


0.42 
+.04 



8 4 
8 6 


37.12 
37.72 


+2 


0.60 
+ .26 


2 


0.34 
-.06 



0.38 



0.40 



Clamp East. 



1 Draconis, 5=81° 46' 



9 21 17. 74; 
9 23 17. 53 



+ 1 



i9.79 
-1.72 



1.51 



E Leonis, 5=24° 14' 



A=-4.77 o=- 


23 


A = 


=+0.27 


a=- .23 


B=+5.09 b=+ 


41 


B = 


=+1.06 


6=+ .40 


C=+6.98 c=- 


246 


C= 


=+1. 


09 


c=- .24( 


Chron. 'J'. 






Chron 


T. 


h. m. 8. 






h. 


m. 


s. 


9 19 42.2 






9 


38 


4.5 


20 13.2 










9.7 


45.1 










14.5 


21 16.1 










19.3 


46.4 










24.3 


22 17.3 










29.4 


49.8 










34.2 


9 21 15.73 


9 


38 


19.41 


+ .03 










+.04 


- .11 










-.02 


+2.09 










+.42 



9 38 
9 40 


19.85 
19.86 


+2 


0.01 

-.27 


2 


0.28 
-.06 



0.34 



star 
Factors 



Mean 
Rate 
Aber. 
6B 



RA 

1st App. 
cC 

Cor.+«A 
«A 

Slow- 
Star 
Factors 



Mean 
Rate 
Aber. 
6B 



RA 

1st App. 
cC 

Cor. -faA 
aA 

Slow 



THE ONE HUNDREDTH MERIDIAN. 
MARCH 16, 1902, KIDDER, ST. LOUIS— Continued 

/< Leonis, 5 =2(5° 28^ 



37 



A=+ .23 a= 
B = + 1.09 b = - 
C=+l.ll (■=■ 



.23 
.39 
.246 



Chron. T. 



58. 5 
3.6 
8.5 
13.3 
18.8 
23.6 



9 45 13.56 
+.05 
-.02 

+ .42 



9 45 
9 47 


14.01 
13.95 


+ 1 


59.94 

-.27 


2 


.21 
-.05 



2 .26 
AUrsj^^Maj., 5=43° 24^ 



A = - .12 «=- 
B =+1.37 b = + 
C = +1.38 c = - 

Chron. T. 

h. m. s. 

10 8 55. 

9 1.2 

7.4 

13.6 

19.5 

25.3 

31.8 



.23 
.38 
.246 



10 



13.40 

+.08 
-.02 

+.52 



10 9 
10 11 


13.98 
14.12 


+ 2 


.14 
-.34 


2 


0.48 
+.03 



I Leonid, 5 = 12° 27' 

.23 
.38 
.246 



.+0.45 «=— 
.+0.92 6 = + 
=+1.03 r= — 



Chron. T. 



10 



57. 4 

1 1.9 
6.8 

11.3 
15.7 
20.1 
24.8 

1 11.24 
+.06 
-.02 
+ .35 



10 1 
10 3 


11.63 
11.66 


+ 2 


.03 
-.25 


2 


.28 
-.10 



2 .38 

/iLeo. Min., S= 37° 13' 

A=+ .02 a=- .23 
B = + 1.25 ;>=+ .37 
C=+1.25 c = - .246 



Chron. T. 



h. m. 

10 19 

20 



s. 
58.5 
3.9 
9.2 
14.9 
20.6 
26.1 
31.9 



10 20 15. 01 
+ .09 
- .02 
+ .46 



10 20 
10 22 


15. 54 
15. 78 


+ 2 


.24 
- .31 


2 


0.53 
.00 



0.45 



0.55 



38 



THE ONE HUNDREDTH MEKIDIAN. 



MAFvCH 16, 1902, KIDDER, ST. liOTJIS— Continued. 

Computations. 
"c" 





Clamp West. 












Clamp East. 




Star. 


1st App. 




C. 


star. 




1st App. 


C. 




m. s. 










m. 


s. 




S Gem. 


+2 0. 58 




+1.08 




£Leo. 




+2 


0.01 


+1.09 


o^ Gem. 


.63 




1.18 




ju Leo. 




1 


59.94 


1.11 


/i Gem. 


.67 




1.13 




a Leo. 




2 


0.03 


1.03 


26 Lyn. 


.79 




1.49 




AU. M. 






.14 


1.38 


C^ Can. 


.60 




1.05 




/JL. M. 
Mean 






.24 


1.25 


Mean 


2 0. 65 


+1.19 


+2 


0.07 


+1.17 








(2-» 0^65) 


-(2'» 0^07) 














~ 1.19 + 1.17. 














c 


=+0. 246 for Clamp West. 












c=-0. 246 for 


Clamp East. 


• 








"a" 
Clamp West. 










"a" 
Clamp East. 




Star. 


Cor.+aA 




A. 


Star. 




Cor. +aA 


A. 




m. s. 










m 


s. 




(5 Gem. 


+2 0. 32 




+ 0.30 




£ Leo. 




+2 


0.28 


+0.27 


n^ Gem. 


.34 




+ .12 




// Leo. 






.21 


+ .23 


/3 Gem. 


.39 




+ .20 




a Leo. 






.28 


+ .45 


26 Lyn. 


.42 




- .23 




AU. M. 






.48 


- .12 


C' Can. 


.34 




+ .37 




/i L. M. 
Mean 






.55 


+ .02 


Mean 


+2 0. 36 


+ 0.15 


+2 


0.36 


+0.17 


51 Ceph. 


+2 2. 77 




-15. 36 




1 Drac. 
Diff. 




+2 


1.51 


-4.77 


Diff. 


- 2.41 


+15. 51 




-1.15 


+4.94 




_ 


-2.41 








-1. 


15 




«=T5:^ 








«- 4.94 




a=- 


0. 


16 








a=-0.23 








('hronom eter corrections. 












8 


Gemin. slow 


m. 

+ 2 


s. 
0.37 












a' 


Gemin. slow 




.36 












fi 


Gemin. slow 




.42 












26 


Lyncia slow 




.38 












c> 


Cancri slow 




.40 












s 


Leonis slow 




.34 












M 


Leonis slow 




.26 












a 


Leonis slow 




.38 












A 


Ursae Maj. slow 


.45 












/i 


Leo. Min. sic 
Mean slov 


w 


.55 


Epoch 9- 0-° 






V +2 


0,39 










8 


ow 2" 


0^38 


Epoch of exchange. 



THE ONE HUNDREDTH MERIDIAN. 



39 



MARCH 16, 1902, KIDDER, ST. LOTJIS— Continued. 

Exchange signals receired at St. Louis. 
From Red River. From St. Louis. 



h. m. 


s. h 


m. s. 


8 48 


57. 65 8 


51 0. 64 




59.65 


2.65 


49 


1.65 


4.70 




3.65 


6.55 




5.68 


8.60 




7.65 


10.60 




9.60 


12.63 




11.60 


14.62 




13.62 


16.58 




15.61 


18.54 




17.60 


20.50 




19.60 


22.48 




21.65 


24.55 




23.65 


26.52 




25.64 


28.50 




27.64 


30. 53 




.29. 62 


32.50 




31.61 


34.53 



rom Red River. 


From St. Louis. 


h. m. 


s. 


h. 


m. 


s. 


8 49 


33.65 
35.65 
37.60 
39. 60 
41.64 
43.60 
45.62 
47.60 
49.60 
51.60 
53.60 
55.60 


8 


51 


36. 50 
38.45 
40.44 
42.36 
44.45 
46.32 
48.30 
50. 30 
52.40 
54.36 
56.40 
58.38 



Mean 8 49 

Chr. slow + 2 



26 63 
0.38 



Correct 8 51 27.01 



8 51 29.50 
+ 2 0.38 



MARCH 16, 1902, MACCONNEL, RED RIVER. 

Levels. 

CLAMP WEST. 

fit' 30"' SI" ; 





Dir. 




Rev. 


Dir. 




Rev. 


w. 

E. 


47.1 
8.0 




14.2 
5^5 


51.0 
9.4 




12.5 
54.0 


W. 
E. 


47.7 
8.3 




14.8 
54.0 


51.5 
9.8 




8.8 
53.0 


Sum 
Diff. 

h 


lli.l 


136.5 
-25.4 

3.18 

0^ 111 
- 0.35 


121.7 


128.3 
-6.6 

0.82 

0^ 111 
-0.09 








CLAMP EAST. 










9h Qm 

Dir. 


Rev. 


Dir. 


loi- 


Rev. 


W. 

E. 


47.0 
15.0 




15.1 
47.3 


48.5 
15.6 




13.6 
46.4 


W. 
E. 


47.1 
15.0 




15.0 
47.1 


49.0 
16.0 




13.7 
46.5 


Sum 
Diff. 

b 


124.1 


122.5 
+1.6 
.2 

o^ 111 

+0.02 


129.1 


120.2 
+8.9 

1.11 

0^ 111 
+0.12 



40 



THE ONE HUNDREDTH MERIDIAN, 



MARCH 16, 1902, MACCONNEL, RED RIVER— Continued. 

Ckwip West. 



51 Cephei, ,^=87° 1^ 



d Gemin., 5=22° 10' 



A=-16.3l 
B=+12.3? 
C=+20.4£ 


rt=-.48 

ft = -.35 

c =+.10 

(Corrected.) 




Chron 


. T. 






h. m. 


s. h. 


m. 


s. 


8 38 
45 


18.0=6 
38.7=6 


53 
53 


14.6 

17.8 


7 

8 


51.9=6 
7.1=6 


53 
53 


12.8 
10.5 


6 53 


13.90 

- .05 

- .35 
-4.33 






6 53 

6 55 


9.17 
1.59 




+1 


52.42 
0.00 





1 52. 42 
(WireH land 2, CI. E.) 

(Wires 4 and 5, CI. W.) 

a^ Gemin., 5=32° CV 



A=+0.04 


«= — 


48 


B = + l 


.18 


i = - 


25 


C = + l 


.18 


c = + 


10 


Chroi 


. T. 




h. 


m. 


s. 




7 


25 


47.0 






26 


12.8 
38.1 






27 


5.0 
30.1 




7 


26 


38.60 
-.03 
-.02 
-.30 





7 26 38.25 
7 28 23.07 



+ 1 44.82 
+.11 



44.71 
-.02 



Lost. 



A=+0.23 


a= — 


48 


B = + 1.05 


6 = — 


30 


C=+1.09 


c = + 


10 


Chron. T. 




h. m. 


s. 




7 11 


46.5 




12 


10.3 
33.6 

57.7 




13 


21.3 




7 12 


33.84 
-.04 
-.02 
-.32 




7 12 


33.46 




7 14 


18.27 




+1 


44.81 
+ .11 




1 


44.70 
-.11 





1 44. 81 
^ Gemin., 5=28° 16' 



A=+0. 12 


a=-.48 


B=+l. 13 


6=-. 20 


C=+1.13 


c = + .10 


Chron T. 


h. m. 


s. 


7 36 


49.0 


37 


12.2 




36.5 


38 


2.5 




26.9 


7 37 


37.02 




-.02 




-.02 




-.23 



1 44. 73 



7 37 
7 39 


36.75 
21.38 


+ 1 


44.63 
+ .11 


1 


44.52 
-.06 



1 44.58 



THE ONE HUNDREDTH MERIDIAN. 



41 



MARCH 16, 1902, MACCONNEL, RED RIVER— Continued. 
2(3 Lyncis, 5 = 47° 49' C'Cancri, (5=17° 57' 



A =-0.35 


a= — 


48 


A= 


=+0.30 


a = — 


48 


B=+1.45 


6= - 


15 


B= 


= + . 


.04 


h = — 


10 


C=+1.48 


c= + 


10 


C= 


= + 1.07 


= + 


10 


Chron 


. T. 








Chron. T. 




li. m. 


s. 






h. 


m. 


s. 




7 44 


47.7 






8 


4 


7.1 




45 


20.2 
52.6 










30.3 
53.0 




4(5 


26.2 

57.7 








5 


16.6 
39.2 




7 45 


52.88 


8 


4 


53.24 






-.02 










-.00 






-.03 










-.02 






-.22 










-.10 





45 52. 61 
47 37. 38 



+ 1 



44.77 
+ .14 



1 44. 63 

+.17 



1 44. 46 



8 4 53.12 
8 6 37.72 



+1 44. 60 
+ .10 



1 44. 50 
-.14 



Clamp East. 



1 Draconis, 5=S1° W 



eLeonis, 5=24° 14' 



A=— 5. 13 a= —.48 
B=+4. 73 b= +.02 
C=+6.98 c= -.10 
Chron. T. 
h. m. s. 
9 16 26.1 
18 55.5 
21 33. 4 
24 3.4 
26 37.0 



9 21 31.08 
+ .05 
-.11 

-f.09 



9 21 
9 23 


31.11 
17.53 


+ 1 


46.42 

-.68 



1 47. 10 



A = +0.20 a=— .48 

B=+1.09 6=+. 04 

C=+1.10 c = -AQ 

Chron. T. 

h. m. s. 

9 37 47.2 

38 11.0 
35.6 
58.9 

39 23.4 



9 


38 


35.22 
+.06 
-.02 
+.04 


9 
9 


38 
40 


35. 30 
19.86 




+1 


44.56 
-.11 




1 


44.67 
-.10 



1 44. 77 



42 



THE ONE HUNDREDTH MERIDIAN. 



MARCH 16, 1902, MACCONNEL, RED RIVER— Ointinued. 



Star. ^i Leonis, <5=26° 28'' 

Factors j A=H-0. 16 «=— .48 
B = + 1.10 i=+ .06 
C=+l.ll c=— .10 



Wires. 



Chroii. T. 

h. m. s 

9 44 40 

45 



4.6 

29.8 
53.9 
18.4 



29.46 
+.06 
-.02 

+ .07 



9 45 
9 47 


29.57 
13.95 


+ 1 


44.38 
-.11 


1 


44.49 
-.08 



1 44. 57 



AUi 

A: 

B. 



10 
10 


9 29.56 
11 14. 12 


HI 44.56 
-.13 


1 44. 69 
+.10 



a Leonis, 


5 = 12° 


11' 


A=+0.38 


a — — 


.48 


B=+1.03 


fe= + 


.07 


C=+1.04 




.10 


Chroi 


. T. 




h. m. 


s. 




10 
1 


42.1 

4.3 

27.4 

49.4 




2 


11.8 




10 1 


27.00 

+.08 
-.02 

+.07 





10 1 
10 3 


27.13 
11.66 


+1 


44.53 
-.10 


1 


44.63 
-.18 



1 44. 81 



sd Maj., 


<5=43° 


24^ 


/J Leo. 


Mill 


., 5=3' 


-o 13/ 


-0.22 


a= — 


.48 


A= 


= -0.06 


a = — 


48 


+ 1.36 


b= + 


.09 


B= 


=+T 


25 


b= + 


11 


+1.38 


f= — 


.10 


C= 


=+1 


25 




10 


Chron 


T. 






Chron 


.T. 




h. m. 


s. 






h. 


m. 


s. 




10 8 


29.2 
58.6 






10 


19 
20 


36.0 
3.3 




9 


29.8 
59.6 










31.7 

58.5 




10 


29.7 








21 


26.1 




10 9 


29.38 


10 


20 


31.12 






+.08 










+.09 






-.02 










-.02 






+.12 










+ .14 





20 31.33 
22 15. 78 



+1 



44.45 
—.12 



44.57 
+.03 



1 44. 59 



1 44. 54 



THE ONE HUNDREDTH MERIDIAN. 



43 



MARCH 16, 1902, MACCONNEL, RED RIVER— Continued. 
Computations. 



Clamp West. 
1st App. 


C. 


star. 


Clamp East. 
1st App. 


C. 


m. s. 






m. s. 




+1 44. 81 
.82 
.63 

.77 
.60 


+1.09 
1.18 
1.13 
1.48 
1.07 


£ Leo. 
/I Leo. 
a Leo. 
A U. M. 
/i L. M. 

Mean. 


+ 1 44.56 
.38 
.53 
.56 
.45 


+1.10 
1.11 
1.04 
1.38 
1.25 


+1 44. 73 


+ 1.19 


+1 44. 50 


+1.18 




(1™ 44^73)— (l™ 44^ 
^~ 1.19 + 1.18 


50) 






c=+0. 10 Clamp W. 
c=— 0. 10 Clamp E. 






Clamp West. 
Cor. +aA. 


A. 


star. 


"a" 
Clamp East. 
Cor. +aA 


A. 


m. s. 






m. s. 




+ 1 44.70 
.71 
.52 
.63 
.50 


+ 0.23 
+ 0.04 
+ 0.12 
- 0.35 
+ 0.30 


£ Leo. 
M Leo. 
a Leo. 
AU. M. 
^L. M. 

Mean. 


+ 1 44. 67 
.49 
.63 
.69 
.57 


+0.20 
+0.16 
+0.38 
-0.22 
-0.06 


+1 44.61 


+ 0.07 


+1 44.61 


-f 0. 09 


+1 52.42 


-16.32 


1 Drac. 
Diff. 


+1 47. 10 


-5.13 


- 7.81 


+ 16.39 


- 2.49 


+5.22 


«= = 


- 7.81 
16.39 




a=— 


2.49 
5.22 


... 


- 0.48 

Chronome 


ter corrections 
m. 


a = — 

s. 


0.48 




S Gemin. 
a^ Gemin. 
/3 Gemin. t 
26 Lynds s 
S^ Cancri s^ 
£ Leonis s 
JU Leonis s 
a Leonis si 
A UrsteMa 
/3 Leo. Min 


slow 1 44. 81 
slow . 73 
slow . 58 
ow .46 
ow .64 
ow .77 
ow . 57 
ow .81 
j. slow . 59 
. slow . 54 





Mean 1 44. 65 Epoch of exchange. 



44 



THE ONE HUNDREDTH MERIDIAN. 



MARCH 16, 1902, MACCONNEL, RED RIVER— Continued. 
Exclianye siynals received at Red River. 



^rom Red River. 


FromS 


. Louis. 


h. m. s. 


h. m. 


s. 


8 10 1.50 


8 12 


4.57 


3.50 




6.60 


5.50 




8.64 


7.48 




10.50 


9.49 




12.54 


11.48 




14.54 


13.47 




16.60 


15.42 




18.57 


17.47 




20.50 


19.48 




22.50 


21.42 




24.43 


23.50 




26.42 


25.50 




28.50 


27.47 




30.50 


29.48 




32.50 


31.45 




34.50 


33.45 




36.47 


35.47 




38.50 


37.50 




40.46 



Mean 
Chr. slow 



Correct 
St. Louis 



From Red River. 


From St 


. Louis. 


h. m. 


s. 


h. 


ni. 


j;_ 


8 10 


39.50 
41.44 
43. 43 
45.45 
47.46 
49.46 
51.43 
53.44 
55.44 
57.45 
59.45 


8 


12 


42.40 
44.^0 
46.34 
48.40 
50.28 
52.29 
54.27 
56. 35 
58. 31 
60.35 
62. 33 


8 10 


30.47 


8 


12 


33. 45 


+ 1 


44.65 


+ 1 


44. 65 


8 12 


15.12 


8 


14 


18. 10 


8 51 


27.01 


8 


53 


29. ^8 



Diff. 39 

Mean 39 ■" 11^.835, St. Louis to Red River, March 16, 1902. 






MARCH 17, 1902, KIDDER, ST. LOUIS. 











Levels. 














CLAMP WEST. 










w. 


6'' 


35- 


E. 


w. 


8h lOm 


E. 


Dir. 
Rev. 
Rev. 
Dir. 


13.1 
12.0 
12.0 
13.0 






4.8 
5.9 
6.0 
5.0 


15.0 
11.9 
11.9 
15.0 




4.0 

7.0 
7.0 
4.0 


Sum 
Diff. 

h 


50.1 


+28.4 
3.55 
0^ 136 

+ 0.48 


21.7 


53.8 


+31.8 
3.975 
0^ 136 

+ 0.54 


22. 








CLAMP EAST. 










w. 


9'' 


IS" 


E. 


w. 


lOh SS'" 


E. 


Dir. 
Rev. 
Rev. 
Dir. 


14.0 
12.8 
12.8 
14.0 






5.0 
6.3 
6.3 
5.0 


13.9 
12.3 
12.4 
13.9 




5.8 
7.2 
7.0 
5.6 


Sum 
Diff. 

h 


53.6 


+31.0 
3.875 
0^ 136 

+ 0.53 


22.6 


52.5 


+26.9 
3.36 
0^ 136 

+ 0.46 


25. 6 



ii 



THE ONE HUNDREDTH MERIDIAN. 



45 



MARCH 17, 1902, KIDDER, ST. LOUIS— Continued. 



Clamp West. 



Star 
Factors 



Mean 
Rate 
Aber. 
6B 



RA 

1st App. 
cC 

Cor.+aA 
aA 

Slow 
Star 
Factors 



1 
2 
3 
4 
5 
6 
7 

Mean 
Rate 
Aber. 



RA 

1st App. 
cC 

Cor.+rtA 
aA 

Slow 



51 Cephei, <5=87° 12^ 



SGemin., 5=22° 10' 



A=-15.36 


a=-.25 


B=+13.56 


6=+. 48 


C=+20.4£ 


r=+.21 


Chron 


.T. 


h. m. 


s. 


6 48 


9.8 


49 


41.6 


51 


14.3 


52 


46.6 


54 


17.7 


55 


48.4 


57 


19.1 


6 52 


45.36 




- .13 




- .34 




+6.50 


6 :2 


51.39 


6 55 


1.23 


+2 


9.84 


+ 4.26 



5.58 



a^Gemin., 5=32° 6' 

A=+0.12 a=-.25 
B=+1.17 6=+. 50 

C=+1.18 o=+.21 

Chrou.T. 
h. m. s. 
7 26 4. 9 
9.9 
15.3 
20.4 
25.4 
31.2 
36.6 



7 26 


20.53 
-.10 
-.02 

+.58 


7 26 

7 28 


20.99 
23. 05 


+ 2 


2.06 

+.25 


2 


1.81 
-.03 



A=+0. 30 


«=-.25 


B=+l 


.03 


6=+. 49 


C=+l 


.08 


c=+.21 




Chron. T. 


h. 


m. 


s. 


7 


12 


1.8 
6.4 
11.2 
16.0 
20.7 
25.7 
30.7 


7 


12 


16.07 
-.11 
-.02 
+ .50 


7 


12 


16.44 


7 


14 


18.25 




4-2 


1.81 
+.23 




2 


1.58 
-.08 




2 


1.66 


ySGemin., 


5=28° 16' 



A-=+0.20 


«=-.25 


B=+l. 12 


?>=+.51 


C=+1.13 


f=+.21 


Chron. T. 


h. m. 


s. 


7 37 


3.8 




9.0 




14.0 




19.3 




24.1 




29.0 




34.2 


7 37 


19.06 




-.08 





+.61 


7 37 
7 39 


19.57 
21.36 


+2 


1.79 

+.23 


2 


1.56 
-.05 



1.84 



1.61 



46 



THE ONE HUNDREDTH MERIDIAN. 



MARCH 17, 1902, KIDDER, ST. 

26 Lynds, (5=47° 49' 

A=-0.23 a=-.25 
B=4-1.47 6=+. 52 
C=+1.49 c=+.21 



IDrac, 5=81° 46' 

A=-4. 77 o = -.37 
B=+5.09 fc=+.52 
C=+6.98 c=-.21 

Chron. T. 
h. m. s. 
9 19 39. 

20 8.7 
41.8 

21 13. 1 
44.5 

22 16.5 
46.0 



9 


21 


12.80 
^ .03 
- .11 
+2.64 


9 


21 


15.36 


9 


23 


17.44 




+2 


2 08 
-1.45 



3.53 



X.OTJIS— Continued. 

CiCancri, 5=17° 57' 

A=+0.37 a=-.25 
B=+0.98 6=4-. 53 
C= + 1.05 r-= + .21 



Chroi 


.T. 






Chron. T. 


h. m. 


s. 




h. 


m. 


s. 


7 45 


15.1 
21.4 
27.8 
34.3 
41.4 
47.8 
54.5 




8 


4 


21.3 
26.0 
30.7 
35.5 
39.9 
44.9 
49.8 


7 45 


34.61 


8 


4 


35.44 




-.08 








-.06 




-.03 








-.02 




+.76 








+ .52 


7 45 


35. 26 


8 


4 


35.88 


7 47 


37.35 




8 


6 


37.70 


+2 


2.09 




+2 


1.82 




+.31 








+ .22 


2 


1.78 




2 


1.60 




+.06 








-.09 


2 


1.72 




2 


1.69 






Clamp East. 









F. Leonis, 5=24° 14' 



A=+0.27 a=- 


.37 


B=+1.06 6=4- 


.51 


C=+1.09 o=- 


.21 


Chron. T. 




h. m. 


s. 




9 3S 


3.3 
8.4 
13.0 
17.9 
23.0 
27.7 
32.7 




9 38 


18.00 
+.04 
-.02 

+.54 





9 38 
9 40 


18.56 
19.85 


+2 


1.29 
-.23 


2' 


1.52 
-.10 



1.62 



THE ONE HUNDREDTH MEEIDIAN. 



47 



MARCH 17, 1902, KIDDER, ST. LOTTIS— Continiud. 



Star 



H Leonis, 5=26° 28' 



Factors 


A = 


= +0.23 


(i= — 


.37 




B= 


= + 1.09 


b= + 


.50 




C= 


= + 1.11 


r=- 


.21 


Wires. 




Chron 
h. m. 


T. 

s. 




1 




9 44 


56.9 




2 




45 


1.7 




3 






6.9 




4 






11.8 




5 






16.8 




6 






22.0 




7 






27.1 




Mean 


9 45 


11.89 




Rate 






+.05 




Aber. 






-.02 




6B 






+ .54 






9 45 


12. 46 




RA 




9 47 


13.95 




1st App. 


+2 


1.49 




cC 






-.23 




Cor. +oA 


2 


1.72 




aA 






-.08 




Slow 


2 


1.80 




Star 


A Ursfe Maj 


., 5:^=43 


°24' 


Factors 


A= 


= -0.12 


a = - - 


.37 




B= 


= + 1.37 


6- + 


.48 




C= 


=+1.38 




.21 



Mean 
Rate 

Aber. 
bB 



RA 

1st App. 
cC 

Cor.+aA 
aA 

Slow 



8 53.6 
59.2 

9 5.9 
12.1 
18.0 
24.1 
30.5 



9 11.94 

+.08 
-.02 
+ .66 



10 
10 


9 
11 


12.66 
14.12 




+2 


1.46 
-.29 




2 


1.75 
+.04 



a Leonis, (5 = 12° 27' 



A=+0.45 


a=— 


37 


B=+0.92 


6=+ 


49 


C=+l 


03 




21 


Chroii. 


T. 




h. 


m. 


s. 




10 





56. 






1 


1.1 

5.3 

9.9 

14.4 

18.9 

23.3 




10 


1 


9.84 
+.06 
-.02 

h.45 





10 1 
10 3 


10. 33 
11.66 


+2 


1.33 
-.21 


2 


1.54 
-.16 





2 


1.70 


/3Leo. 


Min., (5=37° 13' 


A=+0.02 


a — — .37 


B=+l 


25 


6=+ .47 


C=+l 


25 


c=- .21 


Chron. 


l\ 


h. 


m. 


s. 


10 


19 


56.5 




20 


2.2 
8.4 
13.7 
19.3 
25.1 
30.5 


10 


20 


13.67 
+ .09 
-.02 
+.59 



10 20 
10 22 


14. 33 

15. 78 


+2 


1.45 
-.26 


2 


1.71 
-.01 



1.71 



1.72 



48 



THE ONE HUNDREDTH MERIDIAN. 



MARCH 17, 1902, KIDDER, ST. LOTJIS— Continued. 

Computations. 





Clamp West. 








Clamp East. 




Star. 


1st App. 


C. 


star. 




1st App. 


C. 


d Gem. 


ni. s. 
+ 2 1.81 


+ 1.08 


E Leo. 




m. s. 
+2 1. 29 


+ 1.09 


a- Gem. 


2.06 


1.18 


/I Leo. 




1.49 


1.11 


fi Gem. 


1.79 


1.13 


ex Leo. 




1.33 


1.03 


26 Lyn. 


2.09 


1.49 


A U. M. 




1.46 


1.38 


C Can. 


1.82 


1.05 


/i L. M. 
Mean 




1.55 


1.25 


Mean 


+2 1.91 


+ 1-19 


+2 1.42 


1.17 






(2'»P.91)-(2'»P.42) 










""- 1. 19 


+ L17 












c=+0.21 Clamp W. 












^=—0.21 Clamp E. 










"a" 
Clamp West 








"a" 
Clamp East. 




Star. 


Cor.+aA. 
m. s. 


A 


star. 




Cor.+aA. 
m. 8. 


A. 


d Gem. 


+2 1.58 


+ 0.30 


£ Leo. 




+2 1.52 


^-0.27 


a" Gem. 


.81 


+ 0.12 


ju Leo. 




.72 


+0.23 


/i Gem. 


.56 


+ 0.20 


a Leo. 




.54 


+0.45 


26 Lyn. 


.78 


- 0.23 


A U. M. 




.75 


-0.12 


C Can. 


.60 


i- 0.37 


/J L. M. 
Mean 




.81 


+0. 02 


Mean 


+2 1.67 


+ 0.15 


+2 1.67 


+0.17 


51 Ceph. 


+2 5. 58 


15.36 


1 Drac. 
Diff. 




+2 3. 53 


—4.77 


Diff. 


-3.91 


+ 15.51 


-1.86 


+4.94 




_ 


- 3.91 






__ 


1.86 




a=- 


15.51 






«=- 


4.94 




a—- 


- 0.25 

Chronome 

S Gemin. si 
o^ Gemin. si 
fi Gemin. si 
26 Lyncis sk 
C^ Cancri slo 
s Leoi:is slo 
M Leonis slo 
a Leonis slo 
A Ursse Maj 
/3 Leo. Min. 


ter corrections. 

m. 
)W 2 1 

ow 
^w 

)W 

w 
w 
w 
w 

slow 
slow 


.66 

.84 
.61 
.72 
.69 
.62 
.80 
.70 
.71 
.72 


a — — 


0.37 



Mean slow 2 1.70 Epoch 9'> 0". 

+2 1. 69 Epoch of exchange. 



THE ONE HUNDREDTH MERIDIAN. 



49 



MARCH 17, 1902, KIDDER, ST. LOUIS— Continued. 

Exchange, signals received at St. Louis. 



"rom Red River. 


From St. Louis. 


h. m. 


s. 


h. m. 


s. 


8 46 


58.52 


8 49 


0.62 


47 


0.54 




2.60 




2.50 




4.50 




4.50 




6.50 




6.50 




8.50 




8.52 




10.50 




10.50 




12.47 




12.50 




14.50 




14 50 




16.45 




16.50 




18.48 




18.50 




20.42 




20.53 




22.40 




22.50 




24.44 




24.48 




26.47 




26.49 




28.48 




28.48 




30.50 




30.50 




32.48 




32.50 




34.40 



From Red River. 


From St. Louis. 


h. m. 


s. 


h. 


m. 


s. 


8 47 


34.55 
36.54 
38.53 
40.50 
42.48 
44.50 
46.50 
48.50 
50.50 
52.48 
54.50 
56.35 


8 


49 


36.42 
38.34 
40. 
42.44 
44.30 
46. 35 
48.30 
50. 30 
52.40 
54.44 
56. 41 
58.35 



Mean 8 47 27.50 

Chr. slow +2 1. 69 



8 49 29. 44 
+ 2 1.69 



Correct 8 49 29.19 8 51 31.13 



MARCH 17, 1902, MACCONNEL, RED RIVER. 

Levels. 

CLAMP WEST. 



61> SO-n 



w. 

E. 

W. 

E. 

Sum 
Diff. 

Vs 
d 
b 



W. 
E. 

W. 

E. 

Sum 
Diff. 

Vs 
d 
b 



Dir. 
46.6 
16.0 



47.8 
17.0 



127.4 



Rev. 
17.0 
47.2 

16.9 
47.1 

128.2 
-0.8 

0.10 

0^ 111 
-0.01 



CLAMP EAST. 



9h lOm 

Dir. Rev. 

49. 14. 8 

16. 48. 



48.7 
15.4 



15.0 

48.3 



129. 1 126. 1 

+3.0 
0.38 

o^ 111 

+0.04 



8k 15m 

Dir. Rev. 

49. 15. 2 

16. 6 47. 7 



49.1 
16.5 



14.6 
47.0 



131.2 124.5 

+6.7 
0.84 
0^ 111 
+0.09 



Dir. 
50.8 
17.0 

51.6 
17.7 



Rev. 
15.0 
48.9 

14.7 

48.4 



137.1 127 

+ 10.1 
1.26 
0^ 111 
+ 0.14 



H. Doc. 375- 



50 THE ONE HUNDREDTH MERIDIAN. 

MARCH 17, 1902, MACCONNEL, RED RIVER 

Clamp Wea. 
Star 51 Cephei, <5=87° 12^ 



A=— 16. 32 a=— . 19 
B= + 12.38 b = - .01 
C = ^20.49 r=Correcte(l 



S Gernin., d= 

A =+0.23 «: 
B = + 1.05 b: 
C = + 1.09 C-. 



-Continued. 



22° 10^ 



Chron.T. 

h. m. s. 

6 38 12. 9 

45 33.9 

6 53 7. 1 



li. m. s. 

=6 53 9. 3 

=6 53 13.0 

=6 53 13. 3 



8 



Lost 
8.4 =6 53 12.8 



11 44. 

12 8. 
31. 
55. 

13 18. 



= - .19 

--+ .01 
-- 0. 00 



12.00 

— .10 Very cold. 

-.35 

-.12 



12 31 

+' 



6 53 
6 55 


11.43 
1.23 


+ 1 


49.80 
0.00 



1 49. 80 
(Wires 1 and 2 CI. E.) 



7 12 
7 14 


31.57 
18. 25 


+ 1 


46. 68 
0.00 


1 


46.68 
-.04 



(Wires 


3 and 4 CI. W.) 






1 


46.72 


«'■* Gemin 


., <5=32° 6^ 




13 Gemin., 


(5=28° 16' 


A=4-0.04 a=- .19 
B =+1.18 6=+ .03 
C=H-1. 18 c= 0.00 




A= 
B= 
C= 


=+0.12 
= + 1.13 
= + 1.13 


fl=- .19 
6 = + .05 
c = 0. 00 


Ch 


roil. T. 






Chron 


T. 


h. 


m. s. h. m. 


s. 




h. m. 


s. 


1 


25 44.5 =7 26 

26 10. 7 =7 26 
36.0 =7 36 

27 2.8 =7 26 

Lost. 


36.3 
36.5 
36.3 
36.4 




7 36 
37 

38 


45.0 
9.9 

34.3 
0.1 

24.3 


7 


26 36.38 

-. 06 Very cold. 
-.02 

+ .04 


7 37 


34.72 
-.04 

-.02 
+.06 



7 26 36. 34 
7 28 23. 05 

+ 1 46.71 
0.00 



46.71 
-.01 



1 46. 72 



7 37 
7 39 


34.72 
21.36 


+1 


46.64 
0.00 


1 


46.64 
-.02 



1 46.66 



THE ONE HUNDREDTH MEKIDIAN. 
MARCH 17, 1902, MACCONNEL, RED RIVER— Continued. 



51 



Slow 



RA 

1st App. 

rC 

Cor. +aA 
r(A 

Slow 



26 Lyncis, 


5=47° 49^ 


A=-0.35 


a=- .19 


B=41.45 


b=+ .07 


C =+1.48 


c= 0. 00 


Chron. 


T. 


h. m. 


s. 


7 44 


45.3 


45 


18.0 




50.3 


46 


23.9 




55. 8 


7 4.5 


50. 66 




-.04 Ve 




-.03 




+.10 



rv cold. 



C^ Cancri, 


5=17° 57' 


A=+0.30 


a=- .19 


B= + 1.04 


6=+ .09 


C =+1.07 


c= 0. 00 


Chron 


. T. 


h. m. 


s. 


8 4 


5.1 




28.2 




51.0 


5 


14.7 




37.1 


8 4 


51.22 




-.00 




-.02 




+.09 



45 50. 69 
47 37.35 



46.66 
0.00 



46. 66 

+ .07 



8 4 
8 6 


51.29 
37.70 


+1 


46.41 
0.00 


1 


46.41 
-.06 



1 46. 59 



1 46. 47 













Clamp East. 








Star 


1 Drac 


3nis 


<5=81° 


W 




£ 


Leonis, 5=24° 14' 


Factors 


A= 


= -5 


.13 


« = — 


.30 




A= 


=+0. 


20 «=- .30 




B- 


=+4.73 


h=-\- 


.04 




B= 


= + 1. 


09 6=+ .06 




C = 


=+6 


.98 


c= 0. 00 




C- 


=+!• 


10 c= 0. 00 


Wires. 




Chron. 


T. 








Chron. T. 






h 












h. 




1 




9 


16 


24.1 








9 


37 44. 9 


9 






18 


53.4 










38 8.6 


3 






?1 


30.9 










33.4 


4 






^4 


1.6 










57.0 


5 






26 


35. 3 










39 21.0 


Mean 


9 


21 


29.06 


9 


38 32.98 


Rate 








+ .10 


Very 


i-old. 






+.12 


Aber. 








-.11 










—.02 


bB 








+.19 










+.07 



9 21 
9 23 


29.24 
17.44 


+ 1 


48.20 
0.00 



9 38 
9 40 



33.15 
19.85 



1 48.20 



+1 


46.70 
0.00 


1 


46 


70 
06 



1 46. 76 



52 



THE ONE HUNDREDTH MERIDIAN. 



MARCH 17, 1902, MACCONNEL, 

// LeoniH, 5=26° 2W 



A=+0. 16 a=- .30 
B =+1.10 b=+ .08 
C =+l.ll c= 0.00 



RED RIVER— Continued. 

(X Leonis, 5=12° 27^ 

A=+0.38 a=- .30 
B=+1.03 6=+ .09 
C =+1.04 c= 0.00 



Chron. T. 






Chron 


T. 


h. m. s. 






h. 


m. 


s. 


9 44 38.3 






10 





40.0 


45 2.2 








1 


2.1 


27.5 










24.9 


51.8 










47.2 


46 16. 1 








2 


9.8 


9 45 27.18 


10 


1 


24.80 


+.12 


Very 


cold. 






+.16 


-.02 










-.02 


+ .09 










+.09 



9 45 

9 47 


27.37 
13.95 


+ 1 


46.58 
0.00 


1 


46.58 
-.05 



10 1 
10 3 


25.03 
11.66 


+.1 


46.63 
0.00 


1 


46.63 
-.11 





1 46.63 








1 


46.74 


A UrsjB Maj., 5=43^ 


24^ 


/JLeoMin., 


5=37° 13^ 


A=-0.22 a=- .30 
B=+1.36 ft = + .11 
C=:+1.38 c= 0.00 


A= 
B = 
C= 


= -0.06 

=+1.25 
=+1.25 


a=- .30 
6 = + .13 
c= 0.00 


Chron. T. 






Chron 


. T. 


h. 


m. s. 






h. 


m. 


s. 


10 


8 26.9 
56.4 

9 27.7 
57.1 

10 27.5 


Very cold. 




10 


19 
20 

21 


34.1 
0.9 
29.3 
56.5 
24.1 


10 


9 27.12 
+ .16 
-.02 
+.15 


10 


20 


28.98 
+ .18 
-.02 
+.16 



10 9 
10 11 


27.41 
14.12 


+ 1 


46.71 
0.00 


1 


46.71 

+.07 



1 46. 64 



10 20 29.30 
10 22 15.78 

+.1 46.48 
0.00 

1 46.48 
-.02 

1 46.50 



THE ONE HUNDREDTH MERIDIAN. 
MARCH 17, 1902, MACCONNEL, RED RIVER— Continued. 

Computations. 



53 



Clamp West. 

1st App. 
m. s. 
+ 1 46.68 
.71 
.64 
.66 
.41 



+ 1 46.62 



c. 

+1.09 
1.18 
1.13 
1.48 
1.07 

+1.19 



star. 

£ Leo. 
M Leo. 
a Leo. 
AU.M. 
/iL.M. 

Mean 



c= 



(l™46^62)-(l■"46^62) 
^f I7l8 



1.19 
c=±0.00 



Clamp East. 
1st App. 



+1 



46.70 
.58 
.63 
.71 

.48 



1 46. 62 



+1.10 
1.11 
1.04 
1.38 
1.25 

1.18 



star. 



Clamp West. 

Cor. + «A 
m. s. 

fl 46. 68 
.71 
.64 
.66 
.41 

+1 46. 62 

+ 1 49.80 

-3.18 



+ 0.23 
+ 0.04 
+ 0.12 
- 0.35 
+ 0.30 

+ 0.07 

-16.32 

+16. 39 

- 3.18 



star. 

£ Leo. 
/I Leo. 
a Leo. 
AU. M. 
fi L. M. 

Mean 

1 Drac. 

Diff. 



"- 16. 39 
a=-0.19 

Clironometer correctiovs. 



Clamp East. 

Cor. + aA 
m. s. 

+1 46. 70 
.58 
.63 
.71 
.48 



+0.20 
+0.16 
+0.38 
-0.22 
-0.06 



+1 46.62 




+0.09 


+1 48.20 




-5.13 


-1.58 


+5.22 


-1. 


58 





5.22 
-0.30 



5 Gemin. slow 
a^ Gemin. slow 
fj Gemin. slow 
26 Lyncis slow 
C' Cancri slow 
e Leonis slow 
fi Leonis slow 
a Leonis slow 
A Ursje Maj. slow 
fi Leo. Min. slow 



46.72 
.72 
.66 
.59 

.47 
.76 
.63 
.74 
.64 
.50 



Mean slow 1 46. 64 Epoch of exchange. 



54 



THE ONE HUNDREDTH MERIDIAN. 

MARCH 17, 1902, MACCONNEL, RED RIVER— Continued. 
Exchange signals received at Red River. 



"•rom Red River. 


From St. Louis. 




From Red River. 


From S 


. Louis. 


h. m. s. 


h. m. 


s. 




h. 


m. 


s. 


h. 


m. 


s. 


8 8 1.50 


8 10 


3. 70 




8 


8 


39.50 


8 


10 


41.43 


3.54 




5.67 








41.50 






43.48 


5.48 




7.54 


- 






43.50 






45. 50 


7.45 




9.50 








45.47 






47.40 


9.47 




11.60 








47.48 






49.45 


11.50 




13. 60 








49.48 






51.43 


13.50 




15.53 








51.50 






53.40 


15.50 




17.60 








53. 48 






55.50 


17.47 




19.50 








55.49 






57.51 


19. 50 




21.51 








57.50 






59.50 


21.50 




23.50 








59. 34 






61.43 


23.50 




25.48 




























25.48 




27.50 


Mean 


8 


8 


30.48 


8 


10 


32. 52 


27.49 




29.53 


Chr. slow 


+ 1 


46.64 


+ 1 


46.64 


29.43 




31.52 




























81.46 




33.57 


Correct 


8 


10 


17.12 


8 


12 


19.16 


33.50 




35.57 


St. Louis 


8 


49 


29.19 


8 


51 


31.13 


35.49 
37. 53 




37.52 
39.53 


















Diff. 




39 


12.07 




39 


11.97 



Mean 39" 12^ .02, St. Louis to Red River, March 17, 1902. 

MARCH 18, 1902, KIDDER, ST. LOUIS. 

Levels. 
CLAMP WEST. 







6» 3rim 




W. 


E. 


Dir. 


12.9 


6.0 


Rev. 


11.0 


7.7 


Rev. 


11.0 


7.6 


Dir. 


12.6 


6.0 


Sum 


47.5 


27.3 


Diff. 




+20.2 


Ve 




2.53 


d 




0^ 136 


h 




+ 0.34 



w. 
13.4 
11.2 
11.2 
13.6 

49.4 



5.3 
7.4 
7.3 
5.0 

25.0 

+24.4 
3.05 
0^ 136 

+ 0.41 



CLAMP EAST. 



Dir. 
Rev. 
Rev. 
Dir. 

Sum 
Diff. 

d 

^ 



W. 
13.1 
11.3 
11.3 
13.4 

49.1 



E. 

5.4 
7.3 
7.3 
5.1 

25.1 

+24.0 
3.00 
0^ 136 

+ 0.41 



13.0 6.0 

11.0 8.0 

11.0 8.0 

13. 5. 9 

48. 27. 9 

+20.1 
2.51 
Q\ 136 

+ 0.34 



THE ONE HUNDREDTH MERIDIAN. 



55 



MARCH 18, 1902, KIDDER, ST. liOXJIS— Continued. 



Clamp West. 



51 Cephei, 5=87° 12' 

A = -15.36 «=-.24 
B= + 13.56 //=+.35 
C= + 2n.49 c=+.20 

Chron T. 



d Gemin., 5=22° 10' 



6 


48 


10.2 




49 


44.1 




51 


11.1 




52 


44.8 




54 


17.1 




55 


49.2 




57 


20.0 


6 


52 


46.07 

- .13 

- .34 

+4.74 


6 


52 


50.34 


6 


55 


0.84 




+2 


10.50 

+4.08 



42 



a^ Gemin., 5=32° 



A=+0.12 


a— — 


24 


B=+l. 17 


h^ + 


37 


C= + 1.18 


c= + 


20 


Chron 


T. 




h. m. 


s. 




7 26 


4.0 
9.4 
14.5 
19.8 
25.1 
30.4 
35.9 




7 26 


19.87 
-.10 
-.02 
+.43 




7 26 


20.18 




7 28 


23.03 




+2 


2.85 
+.23 




2 


2.62 
-.03 




2 


2.65 





A = + 0.30 


a = -.24 


B= + 1.03 


6= + . 36 


C= + 1.08 


c = +.20 




Chron. T. 


li. 


m. 


s. 


7 


12 


0.7 
5.7 
10.4 
15.2 
20.0 
24.9 
29.6 


7 


12 


15.21 
-.11 
-.02 

+ .37 


7 


12 


15.45 


7 


14 


18. 23 




+2 


2.78 
+.21 




2 


2.57 
-.07 




2 


2.64 


3 Gemin., (^ 


=28° 16' 


A =+0.20 


a=-.24 


B=+1.12 


b=+.38 


C=+1.13 


c = + .20 




Chron. T. 


h. 


m. 


s. 


7 


37 


2.9 
8.1 
13.2 
18.2 
23.2 
28.1 
33.2 


7 


37 


18.13 
-.08 
-.02 
+.43 


7 


37 


18.46 


7 


39 


21.34 




+2 


2.88 
+ .23 




2 


2.65 
-.05 



2.70 



56 



THE ONE HUNDREDTH MERIDIAN. 



MARCH 18, 1902, KIDDER, ST. liOTJIS— Continued. 
26 Lyncis, 5=47° 49^ C' Cancri, <5=17° 57' 



A=-0.23 


a — — 


24 


A= 


=+0.37 


o=-.24 


B =+l 


.47 


b= + 


39 


B= 


=+0.98 


6=+. 40 


C=+l 


.49 


c = + 


20 


C= 


=+1 


05 


f =+.20 


Chron 


T. 






Chron 


. T. 


h. 


m. 


s. 






h. 


m. 


s. 


7 


45 


13.7 
20.3 
27.0 
34.0 
40.6 
47.1 
53.8 






8 


4 


20.7 
25.4 
29.9 
34.4 
39.3 
43.8 
48.7 


7 


45 


33.79 


8 


4 


34.60 






-.08 










-.06 






-.03 










-.02 






+.57 






8 


4 


+.38 


7 


45 


34.25 


34.90 


7 


47 


37.32 






8 


6 


37.68 



3.07 
+.30 



2.77 
+.06 



+2 2. 78 
+.21 

2 2.57 



2.71 



2 2.( 







Clamp East. 








Draconis, 5=81° 46' 




s 


Leonis, 5=24° 14' 


A=-4.77 rt=-.27 
B=+5.09 /*=+.40 
C=+6.98 c = -.20 




A-. 

B-- 
C= 


=+0.27 a=-.27 
=+1.06 6=+. 39 
=+1.09 c=-.20 


Chron. T. 








Chron. T. 


h. m. s. 








h. 


m. s. 


9 19 38.5 

20 10.0 
42.2 

21 13. 
44.4 

22 14.9 
46.4 








9 


38 2.3 
7.2 
12.1 
16.9 
21.9 
26.9 
31.6 


9 21 12.77 
+ .03 
- .11 
+2.09 


9 


38 16.99 

+.04 
-.02 

+.41 



9 21 
9 23 


14.78 
17.36 


+2 


2.58 
-1.39 



3.97 



9 38 
9 40 


17.42 
19.84 


+2 


2.42 
-.22 


2 


2.64 
-.07 



2.71 



THE ONE HUNDREDTH MERIDIAN. 



57 



MARCH 18, 1902, KIDDER, ST 

H Leonis, 5=26° 28^ 

A=+0.23 a=-.27 
B=+1.09 6=+. 38 
C=+l.ll c=-.20 



Chron. T. 




h. 


m. 


s. 


9 


44 


56.2 




45 


1.3 
6.2 
11.1 
16.4 
20.9 
26.1 


9 


45 


11.17 
+.05 
-.02 

+.41 


9 


45 


11.61 


9 


47 


13.94 




+2 


2.33 
-.22 




2 


2.55 
-.06 




2 


2.61 



IiOTJIS— Continued. 

a Leonis, 5=12° 27^ 

A=+0.45 a=-.27 
B=+0.92 fe=+.37 
C=+1.03 c=-.20 



55.0 
59.7 
4.4 
8.9 
13.6 
18.1 
22.6 



10 


1 


8.90 
+.06 
-.02 
+.34 


10 
10 


1 

3 


9.28 
11.65 




+2 


2.37 
-.21 




2 


2.58 
-.11 



A Ursfe Maj., 5=43° 24' 

A=-0.12 a=-.27 

B=+1.37 6=+. 36 

C= + 1.38 o=— .20 
Chron. T. 

h. m. s. 



10 8 


52.6 




58.9 


9 


5.2 




11.2 




17.3 




23.3 




29.5 


10 9 


11.14 




+.08 




-.02 




+.49 


10 9 


11.69 


10 11 


14.11 


+2 


2.42 




-.27 


2 


2.69 




+.03 


2 


2.66 



?Leo. Min., 5=37° 13' 

A=+0.02 «=-.27 
B= + 1.25 ft=+.35 
C=+1.25 c=-.20 
Chron. T. 



10 



56.0 
1.6 
7.0 

12.7 
18.5 
24.0 
29.8 



10 20 12.80 
+.09 
-.02 





+.44 


10 20 
10 22 


13.31 
15.77 


+2 


2.46 
-.25 


2 


2.71 
0.00 



58 



THE ONE HUNDKEDTH MERIDIAN. 
MARCH 18, 1902, KIDDER, ST. LOUIS-Continued. 

Compalations. 



Star. 


Clamp West. 

1st App. c. 
in. s. 


Star. 




Clamp East. 
1st App. 


C. 


8 Gem. 
<r Gem. 
/iGem. 
26 Lyn. 
?' Can. 


+2 2.78 +1.08 
2. 85 1. 18 
2.88 1.13 
3. 07 1. 49 
2.78 1.05 


f Leo. 
H Leo. 
a Leo. 
AU.M. 
! /?L.M. 

Mean 




m. .s. 
+2 2. 42 
.33 
.37 
.42 
.46 


+1.09 
1.11 
1.03 
1.38 
1.25 


Mean 


+2 2. 87 -f 1. 19 


+2 2. 40 


+1.17 




^_(2'» 2^87)-(2'" 2^40) 








1.19 + 1.17^ 








c=+0.20 Clamp W 










r=-0.20 Clamp E. 








Star. 


Clamp West. 

Cor.+«A A star, 
m. s. 




"a" 
Clamp Ea.st. 
Cor.+aA 


A 


5 Gem. 
<i'^ Gem. 
fi Gem. 
26 Lyn. 
S'Can. 


+2 2. 57 + 0. 30 
.62 +0. 12 
.65 + 0.20 
- 77 - 0. 23 
.57 +0. 37 


£ Leo. 
M Leo. 
aLeo. 
AU.M. 
/iL.M. 

Mean 




m. s. 
+2 2. 64 
.55 
.58 
.69 
.71 


+0.27 
+0.23 
40. 45 
—0. 12 
+0.02 


Mean 


+2 2. 64 + 0. 15 


+2 2. 63 


+0.17 


51 Ceph. ' 


+2 6.42 --15.36 


1 Drac. 
Diff. 




+2 3. 97 


-4. 77 


Diff. 


—3.78 +15.51 


-1.34 


+4.94 




«--3-8 




— 1. 


34 




15.51 




"=-4: 


94 




a=- 0.24 




a=-0.27 




VhronomftiT eorrecUom. 










5Gemin. slow 2 i: 


s. 
.64 








<i^ Gemin. slow 


.65 








/iGeinin. slow 


.70 








26 Lyncis slow 


. 71 








?' Cancri slow 


.66 








E Leonis slow 


.71 








H Leonis slow 


.61 








tr Leonis slow 


69 








A Urs?e Maj. slow 


66 








/iLeo. Min. s 
Mean s 


(JW 


71 


Enni-h Qii (\'» 






ow 2 2 


67 





+2 2. 66 Epoch of exchange. 



THE ONE HUNDREDTH MERIDIAN. 
MARCH 18, 1902, KIDDER, ST. LOTJIS— Continued. 



59 



Exchange signals received at St. Louis. 



From Red River. 



59. 70 
1.75 
3.72 
5.67 
7.70 
9.70 
11.68 
13.60 
15.68 
17.66 
19.77 
21.70 
23.74 
25.68 
27.70 
29.68 
31.72 
33.70 



From St. Louis, 
h. m. s. 

8 



0.50 


2.45 


4.42 


6.35 


8.46 


10.46 


12.50 


14.50 


16.56 


18.52 


20.50 


22.50 


24.52 


26.52 


28.50 


30. 46 


32.52 


34.54 



From Red River. 


From S 


. Louis. 


h. m. 


s. 


h. 


m. 


s. 


8 49 


35.60 
37.70 
39.75 


S 


51 


36.56 
38.46 
40.50 




41.75 


' 




42.42 




43.70 






44.40 




45.60 






46.30 




47.64 






48.40 




49.65 






50.40 




51.68 






52.35 




53.65 






54.45 




55.63 






56.42 




57.62 






58.50 



Mean 8 49 

Chr.slow + 2 



28.68 
2.66 



8 51 29. 46 
+ 2 2.66 



Correct 8 51 31.34 8 53 32.12 



MARCH IS, 1902, MACCONNEL, RED RIVER. 











Levels. 












OLAMP WEST.* 










-h 15m 






s^ 15™ 




Dir. 




Rev. 




Dir. 


Rev. 


w 


48.0 




17.4 




46.8 


18.0 


E. 


18.1 




47.0 




16.0 


48.5 


W 


48.0 




17.4 




47.0 


17.7 


E. 


18.0 




47.1 




16.4 


48.5 


Sum 


132. 1 




128.9 




126.2 


132.7 


Diff. 




h3.2 






- 


^6.5 


;;■ 




0.40 








0.81 




0^ 111 






0^ 111 


h 


+0.04 






^ 


-0.09 








CLAMP EAST. 










(jl, lOm 






10'" SB"" 




Dir. 




Rev. 




Dir. 


Rev. 


w. 


47.8 




17.0 




52.2 


19.4 


E. 


16.6 




48.0 




21.0 


50.8 


W. 


48.8 




17.0 




48.0 


18.7 


E. 


17.8 




48.0 




17.0 


50.0 




, 












Sum 


1 131.0 




130.0 




138.2 


138. 9 


Diff. 




^1.0 








-0.7 


> 




0.125 






0.09 




0^ 111 






o^ 111 


h 




+0.01 








-0.01 



60 



THE ONE HUNDEEDTH MERIDIAN. 



MARCH 18, 1902, MACCONNEL, RED RIVER— Onntinued. 
Vhtmp TIV.s/. 



51 Cephei, 5=87° 12^ 
Lost, clouds. 



((••'Gemin., 5=32° 6' 

A=+0.04 «=-0.05 
B=+l. 18 6=-0.00 
C=+l. 18 c=+0.11 



7 25 
26 

27 


42.2 
8.0 

33.7 
0.4 

25.9 


7 26 


34.04 
-.03 
-.02 
0.00 


7 26 

7 28 


33.99 
23.03 


+ 1 


49.04 
+ .13 


1 


48.91 
0.00 


1 


48.91 



(5Gemin., <5=22° 10' 



A =+0.23 


«=-.05 


B= + l 


05 


^=+.03 


C= + l 


09 


r= + .ll 


Chron 


T. 


h. 


m. 


s. 


7 


11 


42.0 




12 


5.7 
29.0 
53.4 




13 


16.6 • 


7 


12 


29.34 
-.04 
-.02 
+.03 



12 29. 31 
14 18. 23 



+ 1 48.92 
+.12 



1 48. 80 
-.01 



1 48.81 
/JGemin., 5=26° 16' 



A=+0. 


12 


a=~.05 


B= + l 


13 


6=-. 03 


C= + l 


13 


c= + .ll 


Chron 


. T. 


h. 


m. 


Si. 


7 


36 


42.5 




37 


7.6 
32.0 
57.7 




38 


22.1 


7 


37 


32.38 
-.02 
-.02 
-.03 



7 37 32.31 
7 39 21.34 



+1 49.03 
+.12 



1 48. 91 
-.01 



THE ONE HUNDREDTH MERIDIAN. 
MABCh 18, 1902, MACCONNEL, RED RIVER— Continued. 



61 



Star 



26 Lyncis, 



5=47° 49' 



Lost, clouds. 



lDraconis,<5+81°46' 



A=-5.13 


o = -.05 


B=+4.73 


/;= + .01 


C=+6.98 


c=-.ll 


Chron 


.T. 


h. m. 


8. 


9 16 


23.1 


18 


53. e 


21 


31.7 


24 


2. 2 


26 


35. 2 


9 21 


29.16 




+.05 




-.11 




+.05 



9 21 
9 23 



29.15 
17.36 



+1 48.41 
-.75 



1 49. 16 



CCancri, (5 = 17° 57^ 



A= 


=+0.30 


(1 = — . 


05 


B= 


=+1.04 


6=—. 


07 


C= 


=+1.07 


P= + 


11 




Chron. T. 






h. m. 


s. 






8 4 


2.5 
25.6 

48.4 






5 


12.1 
34.8 





8 4 


48.68 
-.00 
-.02 
-.07 


8 4 
8 6 


48.59 
37.68 


+ 1 


49.11 
+.12 


1 


48.99 
-.01 



Clamp East. 



1 49. 00 

£ Leonis, <5=24° 14^ 
Lost, Cloud.'--. 



(>2 



THE ONE HUNDKEDTH MERIDIAN. 



MAaCH 18, 1902, MACCONNEL, RED RIVER— Continued. 

crLeonis, 8 = 12° 21' 



Star /< Leonis, (5=26° 28' 

Factors j A =+0. 16 a=— .05 

B=: + l. 10 6= 0.00 

I C= + l.ll e=- .11 

Wires. Chroii. T. 



A=+0. 38 a-- 
B= + 1.03 h-- 
C=:+1.01 <-- 

Chron. T. 



:- .05 
: 0.00 
:- .11 



9 


44 


36.2 




45 


0.2 
25.6 
49.5 




46 


14.1 


9 


45 


25.12 

+.06 

-.02 

.00 


9 


45 


25.16 


9 


47 


13. 94 




+ 1 


48.76 
-.12 




1 


48. 88 
-.01 




1 


48.89 


Ursaj Maj., 


<5=43°24 



A=-0.22 a = - .05 
B= + 1.36 6=- .01 

C=:+1.38 c=- .11 





Chron. T. 


h. 


m. 


s. 


10 


8 


24.9 
54.6 




y 


25.6 
55.3 




10 


25.7 


10 


9 


25.22 
+ .08 
-.02 
-.01 


10 


9 


25.27 


10 


11 


14.11 




4-1 


48.84 
-.15 




1 


48.99 
+.01 



10 



10 



38. 

1 0. 



45. 



1 22. 

+. 



10 1 
10 3 


22. 92 
1L65 


+1 


48.73 
-.11 


1 


48.84 
-.02 



1 48. 86 
/J Leo. Min., 5=37° 13' 



A=— 0.06 o= 
B= + 1.25 6= 
C=+1.25 c= 

Chron. T. 
h. m. s. 
10 19 31. 
59. 

20 27. 
54. 

21 22. 



10 20 26. 

+. 



10 20 27. 
10 22 15. 



-1 48. 



1 48. 87 
-.00 



1 48.98 



1 48. 87 



THE ONE HUNDREDTH MERIDIAN. 



63 



MARCH 18, 1902, MACCONNEL, RED RIVER— Continued. 

Computations. 



Clamp West. 








Clamp East. 




1st App. 


c. 


Star. 




1st 


App. 


c. 


ni. s. 








m. 


s. 




+ 1 48.92 


+1.09 


/I Leo. 




+ 1 


48.76 


j4.ll 


49.04 


1.18 


(t Leo. 






.73 


1.04 


49. 03 


1.13 


A U. M. 






.84 


1.38 


49.11 


1.07 


fd L. M. 
Mean 






.73 


1.25 


+1 49.02 


+1.12 


+ 1 


48.77 


+1. 19 




(l""49^02)-(l'°48' 


77) 










1. 12 + 1. 19 











c=+0. 11 Clamp West. 
c=— 0. 11 Clamp East. 



d Gem. 


a^ Gem 


/3 Gem. 


?i Can. 


M Leo. 


a Leo. 


AU. M 


/i L. M 


Mean 


1 Drac. 


Diff. 



Cor.+oA 


A 


m. s. 




+1 48.80 


+0.23 


.91 


+0.04 


.91 


+0.12 


.99 


+0.30 


.88 


+0.16 


.84 


+0.38 


.99 


-0.22 


.87 


-0.06 


+1 48. 90 


+0.12 


+ 1 49. 16 


-5.13 



-0.26 



+5.25 



-0.2 6 
5.25 



-0.05 



Chronometer (orrections. 



S Gemin. slow 
(L^ Gemin. slow 
/3 Gemin. slow 
C' Cancri slow 
M Leonis slow 
a Leonis slow 
A Ursse Maj. slow 
/J Leo. Min. slow 



48.81 
48.91 
48.92 
49.00 
48.89 
48.86 
48.98 
48.87 



Mean slow 1 48. 91 Epoch of excl 



64 



THE ONE HUNDREDTH MEKIDIAN. 

MARCH 18, 1902, MACCONNEL, BED RIVER— Continued. 
Exchange signals received at Red River. 

From Red River. From .St. L(Hiis. 



>om Red River. 


From St. Louis. 


h. m. s. 


h. m. 


s. 


8 10 1.31 


8 12 


2.22 


3.40 




4.21 


5.40 




6.17 


7.34 




8.11 


9.35 




10.23 


11.37 




12.28 


13.38 




14.30 


15.28 




16.28 


17.36 




18.32 


19.37 




20.30 


21.43 




22.27 


23.37 




24.30 


25.40 




26.35 


27.35 




28.30 


29.38 




30.22 


31.36 




32.22 


33.38 




34.30 


35.40 




36.30 


37.30 




38.35 



10 39.37 
41.42 
43.43 
45.40 
47.31 
49.32 
51.34 
53.38 
55.37 
57.34 
59.30 



Mean 8 10 

Chr. slow +1 



30. 36 
48.91 



Correct 8 12 
St. Louis 8 51 



19.27 
31.34 



Diff. 



39 12. 07 



Mean 39™ 12^.025, St. Louis to Red River, March 18, 1902. 

MARCH 26, 1902, MACCONNEL, ST. LOUIS. 

Levels. 



40.22 
42. 25 
44. 20 
46.18 
48. OS 
50.18 
52.17 
54.15 
56.25 
58.20 
60.22 



8 12 

+ 1 


31.23 
48.91 


8 14 
8 53 


20.14 
32.12 



39 11. 









CLAMP WEST. 










^h 47n, 






Oh 30"> 




w. 




E. 


W. 


E. 


Dir. 


12.2 




9.0 


12.6 


9.0 


Rev. 


13.4 




7.9 


14.0 


7.6 


Rev. 


12.8 




8.8 


13.8 


8.0 


Dir. 


12.0 




9.1 


12.0 


9.8 


Sum 


50.4 




34.8 


52.4 


34.4 


Diff. 




+ 15.6 




+ 18.0 


Vs 




1. 


95 




2.25 


d 




0» 


136 




Q\ 136 


b 




+0. 


27 

CLAMP EAST. 




+0.31 




111' 35n 




ISk 20"' 




W. 




E. 


w. 


E. 


Dir. 


11.5 




10.1 


11.5 


10.1 


Rev. 


13.7 




8.0 


12.0 


9.9 


Rev. 


13.0 




8.5 


12.4 


9.2 


Dir. 


12.4 




9.1 


11.6 


10.1 


Sum 


50.-6 




35.7 


47.5 


39.3 


Diff. 




+ 14.9 




+8.2 


Vs 




1. 


86 




1.02 


/ 




0^ 


136 




0^ 136 


h 




+0. 


25 




+0. 14 



THE ONE HUNDREDTH MERIDIAN. 



65 



MARC 


H 26, 


1902, 


MACCONNEL 

Clamii Went. 


1 D 


raconis, 


(5^81° 


W 


A= 


= -4.77 


a=-0.59 


B= 


=+5.09 


ft=+ 


.27 


C- 


=+6.98 


c=+ 


.40 




Chron. 


T. 






h. m. 


s. 






9 19 


34.4 






20 


5.8 
37.0 






21 


9.0 
40.4 






22 


11.0 
43.3 




9 21 


8.70 








+ .24 








- .11 








+ 1.38 




9 21 


10.21 






9 23 


16.60 




+2 


6.39 








+2.80 





3.59 



ST. LOUIS— Continued. 



eLeonis, 5=24° 14'' 

A=+0.27 rt=-0.59 
B=+1.06 ;>=+ .28 
C=+1.09 ('=+ .40 



38 



3.6 
8.5 
13.3 
18.4 
23.2 
28.0 
33.2 



9 38 



18.31 
+.19 
-.02 
+.30 



9 38 18.68 
9 40 19.77 



+2 



1.09 

+.44 



0.65 
-.16 



2 0.81 



/< Leonis, 

A=+0. 23 
B=+1.09 
C=+l.ll 

Chron. 
h. m. 
9 44 
45 



=26° 25' 
a=— 0. 



:+ .29 
:+ .40 



57.4 
2.3 
7.4 
12.3 
17.2 
22.4 
27.6 



45 



12.37 
+.18 
-.02 

+.32 



9 45 

9 47 



12. 85 
13.87 



+2 



1.02 

+.45 



0.57 
-.14 



H. Doc. 375- 



0.71 

-5 



40 



« Leonis, 5=12° 27' 

A=+0.45 a = -0.59 
B = +0.92 fe=+ .29 
C=+1.03 c=-\- . 

Chron. T. 

h. m. s. 

10 56.4 

1 1.2 

5.6 

10.1 

14.7 

19.3 

24.0 

10 1 10.19 

+.15 
-. 02 

+.27 

10 1 10.59 
10 3 11.60 



+2 



1.01 

+ .42 



0.59 
-.27 



66 



THE ONE HUNDREDTH MERIDIAN. 



MARCH 26, 1902, MACCONNEL, ST. LOUIS— Continued. 



Star 


X Urs* Maj., d 


Factors 


Lost, clouds. 


Wires. 




1 
2 

3 
4 

5 
6 

7 




Mean 
Rate 
Aber. 
6B 





=43° 24^ 



/5Leo. Min., 5=37° 13^ 



A=+0.02 
B=+1.25 

C=+1.25 



—.59 

: + .31 
: + .40 



EA 

1st App. 
cO 

Cor.+«A 
aA 

Slow 



Star 
Star 
Factors 



3 
4 

5 
6 

7 

Mean 
Rate 
Aber. 



RA 

Ist App 

Cor.+rtA 
aA 

Slow 



Chron. T. 

h. m. s. 

10 19 57.2 

20 2.6 

8.3 

13.8 

19.4 

25.3 

30.9 



10 20 


13.93 
+.09 
-.02 
+.39 


10 20 
10 22 


14.39 
15.72 


+2 


1.33 
+.50 


2 


0.83 
-.01 



2 0.84 
Clamp East. 

ft Leonis, 5=15° 1' (Lost, clouds.) 4 Drac. H., 5=78° 10^ (Lost, clouds.) 



ft Can. Ven., S-- 
Lost, clouds. 



=41° 53^ 



a Can. Ven. ,5=38° 51^ 



A=-0. 02 


o = -.59 


B=+L29 


6=+. 20 


C=+1.29 


c=-.40 


Chron. T. 


h. m. 


s. 


12 49 


11.6 




17.6 




23.3 




28.9 




34.7 




40.3 




46.4 


12 49 


28.97 




- .27 




- .02 




+ .26 



12 

12 


49 
51 


28.94 
29.14 




+2 


0.20 
- .52 




2 


0.72 
+ .01 



0.71 



THE ONE HUNDEEDTH MERIDIAN. 



67 





mABCH 


26, 


1902, 


MACCONNEL, ST 


. LOUIS— Continued. 


Star 


E Virginis, 


5=11° 


29^ 




20 Can. ^ 


en. 


<5=41° 5' 


Factors 


A = 


=+0.46 a= 





59 


A= 


=-0.06 


a=-.59 




B = 


HO. 91 b^ 


+ 


18 


B= 


=+1 


.32 


6=+. 16 




C= 


-- + 1. 


02 c= 


— 


40 


C= 


=+1 


.32 


c=-.40 


Wires. 




Chron. T. 








Chron 


T. 




h. 


m. 


s. 








h. 


m. 


s. 


1 


12 


55 


6.8 








13 


10 


53.4 


2 






11.4 












59.2 


3 






16.0 










11 


5.5 


4 






20.4 












11.3 


5 






25.2 












17.2 


6 






29.5 












23.2 


7 






34.1 












29.2 


Mean 


12 


55 


20.49 


13 


n 


11.29 


Rate 






-.30 












-.33 


Aber. 






-.02 












—.02 


6B 






+ .16 












+.21 



RA 

1st App. 
cC 

Cor. +fflA 
aA 

Slow 



12 55 
12 57 


20.33 
20.39 


4-2 


0.06 
— .41 


2 


0.47 
-.27 



11.15 
11.40 



+2 



0.25 
-.53 



0.78 
+.04 



2 0.74 



0.74 









Computations. 






star. 


Clamp West. 
1st App. 


c. 


Clamp East. 
Star. 1st App. 


C. 


£Leo. 
M Leo. 
a Leo. 
/i L. M. 


m. 

+2 


s. 

1.09 
.02 
.01 
.33 


+1.09 
1.11 
1.03 
1.25 


a C. V. 

£Vir. 

20C.V. 

Mean 


m. s. 

+2 0.20 

.06 

.25 


+1.29 
1.02 
1.32 


Mean 


■ +2 


Lll 


+L12 


+2 0.17 


+1.21 








(2m p. 1 

L12 


l)-(2'" 0M7) 
+ 1.21 








"a" 




c=+0. 40 
c=-0.40 


Clamp West. 
Clamp East. 






star. 


Cor.+aA 


A 








fLeo. 
// Leo. 
a Leo. 
/iL. M. 
a C. V. 
£ Vir. 
20 C. V. 


+2 


0.65 
.57 

,.59 
.83 
.72 
.47 
.78 


+0.27 
+0. 23 
+0.45 
+0.02 
-0.02 
+0.46 
-0.06 


-2.93 
"- 4.96 






Mean 


+2 


0.66 


+0. 19 




1 Drac. 


+2 


3.59 


-4.77 


(,=-0.59 






Diff. 


_ 


-2.93 


+4.96 





68 



THE ONE HUNDREDTH MERIDIAN. 



MABCH 26, 1902, MACCONNEL, ST. LOUIS— Continued. 
Chronometer corrections. 







E Leonis slow 


2 


0.81 














jii Leonis slow 




.71 














a Leonis slow 




.86 














/3 Leo. Min. slow 




.84 














nrCan. Ven. slow 


.71 














E Virginis slow 




.74 














20 Can. Ven. slo\^ 
Mean slow 




.74 


Epoch of excha 






2 


0.77 


mge. 




Exchange signals received at St. Louis. 








From Red River. 


From St. Louis. 




From Red River. 


From St. Louis. 


h. m. 


s. 


h. m. 8. 




h. 


m. 


s. 


h. 


m. 8. 


11 16 


59.00 


11 23 0. 85 




11 


17 


35.00 


11 


23 37.10 


17 


1.00 

3.08 

5.07 

7.10 

9.00 

11.02 

13.00 

15.00 

17.07 

19.03 

21.08 

23.10 

25.00 


2.88 
4.92 
7.08 
9.00 
11.10 
13.10 
15.10 
17.02 
19.10 
2L16 
23. 10 
25.07 
27.10 








37.00 
39.00 
41.09 
43.10 
45.00 
47.06 
49.00 
5L00 
53.00 
55.00 
57.09 




38. 93 
40.95 
43.00 
45.00 
47.00 
49.03 
51.00 
53.00 
55.00 
56.93 
59.00 




Mean 


11 


17 


28.03 


11 


23 30.03 




27.00 


29.12 


Chr. slow + 


2 


0.77 


+ 2 0. 77 




29.00 
31.00 


31.03 
33.10 
















Correct 


11 


19 


28.80 


11 


25 30.80 




33.10 


35.00 















MARCH 26, 1902, KIDDEB, RED RIVER. 

Levels. 
CLAMP WEST. 



9h Om 





Dir. Rev. 


w. 

E. 


51. 5 12. 5 
13.0 51.2 


W. 

E. 


51. 7 11. 1 
12.6 50.0 


Snm. 
Diff. 

v., 

d 

h 


128. 8 124. 8 
+4.0 
0.50 

o^ 111 

+0.06 




CLAMP EAST 
111- 2> 
Dir. Rev. 


W. 
E. 


53. 7. 5 
12. 2 48. 2 


W. 
E. 


65.0 10.0 
14.2 50.8 


Sum. 
Diff. 

Vs 

d 

b 


134.4 116.5 
+17.9 
2.24 
0^ 111 
+ 0.25 



Dir. 
54.2 
13.7 

54.2 
13.5 

135.6 



Rev. 

9.3 

49.9 



49.2 
117.0 



+18. 
2. 

+0. 



Dir. 
54.8 
13.0 

55.2 
8.1 

131.1 



Rev. 

7.1 

49.0 

7.7 
49.8 

113.6 



+17. 
2. 
0'. 

+ 0. 



Ill 

24 



THE ONE HUNDREDTH MERIDIAN. 



69 



MABCH 26, 1902, KIDDER, RED RIVER— Continued. 
Clamp Went. 



Star 
Factors 



1 
2 
3 
4 
5 

Mean 
Aber. 
6B 



RA 

1st App. 
cC 

Cor.+oA 
aA 

Slow 

Star 

Factors 



1 
2 
3 
4 
5 

Mean 
Aber. 
6B 



RA 

1st App. 
cC 

Cor.+aA 
oA 

Slow 



1 Draconis, 5=81° 46^ 

A=-5. 13 a=+.39 
B=+4.73 6=+. 08 
C=+6.98 c=+.31 

Chron.T. 



9 16 22.5 

18 55.6 

21 27.2 

24 5.1 

26 34.1 



e Leonis, 5=24° 14' 



9 


21 


28 


90 






— 


15 






+ 


38 


9 


21 


29 


13 


9 


23 


16.60 




+1 


47 


47 






+2.16 



1 45.31 



// Leonis, 5=26° 28' 



A=+0. 16 a= 
B=+1.10 b-- 
C=+l.ll C-- 

Chron. T. 
h. m. s. 
9 44 37.1 

45 1.6 
25.9 
50.9 

46 15. 



: + .39 
: + .12 
: + .31 



9 45 


26.10 
-.02 
+ .13 


9 45 
9 47 


26.21 

13.87 


+1 


47.66 
+.34 


1 


47.32 
+ .06 



A=+0.20 a=+.39 
B= + 1.09 6= + . 10 
C=+1.10 c=+.31 

Chrou. T. 
h. m. s. 
9 37 43.8 

38 7.8 
31.1 
56.4 

39 19.8 


9 38 


31.78 
-.02 
+.11 


9 38 
9 40 


31.87 
19.77 


+1 


47.90 
+.34 


1 


47.56 

+.08 


1 47. 48 
a Leonis, 5=12° 27' 



A=+0.38 a=+.39 
B=+1.03 6=+. 14 
C=+L04 c=+.31 

Chron.T. 
h. m. s. 
10 38.6 

1 1.3 
23.2 
46.4 

2 8.4 



10 


1 


23.58 
-.02 
+.14 


10 
10 


1 

3 


23.70 
11.60 




+1 


47.90 

+.32 




1 


47.58 

+.15 



1 47. 26 



1 47. 43 



70 THE ONE HUNDREDTH MERIDIAN. 

MARCH 26, 1902, KIDDER, RED RIVER— Continued. 



AUr«eMaj., (5=43° 24' 



: + .39 
: + .16 
:+.31 



= -0.22 a-- 
3+1.36 h-- 
=+1.38 c= 

Chroii. T. 

:) 8 25. 8 

56.2 

9 25.9 

57.0 



10 


26.8 


10 9 


26.34 
-.02 

+.22 


10 9 
10 11 


26.54 
14.04 


• +1 


47.50 

+.43 


1 


47.07 
-.09 



/iLeo. Min., 5 = 37° 13' 

A = -0.06 «=+.39 
B = + 1.25 6=+. 18 
C=+1.25 c= + .31 

Chron. T. 
h. m. s. 
10 19 33.0 

20 0.4 
27.6 
55.8 

21 23.0 



10 20 


'11 

+.22 


10 20 
10 22 


28.16 
15.72 


+1 


47.56 
+.39 


1 


47.17 
-.02 



1 47. 19 



Clamp EnM. 



ft Leonis, 8 = 15° 7' 



A =+0.34 a= 
B=+0.98 b= 
C=+1.04 c= 



:+.44 
:+.25 
:-.31 



4 Draconis, S = 78° 10' 

A=-3.37 rt=+.44 
B=+3.53 6=+. 25 
C=+4.88 (>=-.31 



Chron. T. 



41 33. 4 
55.4 

42 19. 
41.3 

43 4.2 



11 


42 


18.66 
-.02 

+.25 


11 
11 


42 
44 


18.89 
6.20 




+1 


47.31 
-.32 




1 


47.63 

+.15 



Chron. T. 


h. m. 


s. 


12 2 
4 
5 
7 
9 


23.3 
7.7 
58.6 
43.6 
30.9 


12 5 


56.82 
-.09 

+.88 


12 5 
12 7 


57.61 
41.94 


+1 


44.33 
-1.51 



1 45. 84 



1 47. 48 



THE ONE HUNDREDTH MERIDIAN. 
MARCH 26, 1902, KIDDER, RED RIVER— Continued. 



71 



star 
Factors 



1 
2 
3 
4 

5 

Mean 
Aber. 
6B 



RA 

1st App. 

c€ 

Cor.+nA 
«A 

Slow 

Star 

Factors 



^Can. Ven., <5 = -41° 53^ 

A=:-0. 17 a=+.44 
B=+1.32 6=+. 25 
C=+1.34 r=-.31 



12 



Chron 


T. 


m. 


s. 


> 26 


22.0 




51.1 


27 


20.9 




50.3 


28 


19.8 



12 


27 


20.82 
-.02 
+ .33 


12 
12 


27 
29 


21.13 
8.00 




+ 1 


46.87 
-.42 




1 


47.29 
-.07 



1 47. 36 

rVirginis, (5=:11°29^ 

A=+0.40 a=+.44 
B=+0.94 &= + .24 
C=+1.02 c=-.31 



a Can. Ven., 5=38° 51' 

A=-0. 10 a=+.44 
B=+1.28 6=+. 24 
C=+1.29 f:=-.31 

Chrou. T. 
h. m. s. 
12 48 46. 

49 13. 1 
42.5 

50 10. 2 
38.3 

12 49 42. 02 
-.02 
+ .31 

12 49 42. 31 
12 51 29.14 

+ 1 46.83 
-.40 

1 47. 23 
-.04 

1 47.27 

20 Can. Ven., <S=41°5' 

A = -0. 16 «=+.44 
B=+1.32 ^.=+.24 
C=+1.32 c=-.31 

Chron. T. 



1 
2 
3 
4 
5 

Mean 
Aber. 
bB 



RA 

1st App. 

cC 

Cor.+aA 

oA 

Slow 



12 54 48.6 

55 10.4 
33.5 
55.6 

56 18.0 



12 


55 


33. 22 
-.02 

+.22 


12 
12 


55 
57 


33.42 
20.39 




+1 


46.97 
-.32 




1 


47.29 

+.18 



13 10 26.1 
54.8 

11 24.5 
53.3 

12 22. 5 



13 11 


24.24 
-.02 
+.32 


13 11 
13 13 


24.54 
11.40 


+1 


46.86 
-.41 


1 


47.27 
.-.07 



1 47.11 



1 47.34 



72 THE ONE HUNDREDTH MERIDIAN. 

MABCH 26, 1902, KIDDER, RED RIVER— Continued. 

Computations. 





Clamp West. 








Clamp East. 




Star. 


1st App 




C. 


star. 




1st App. 


C. 




m. 


s. 








m. 


s. 




£ Leo. 


+ 1 


47.90 


+1.10 


/JLeo. 




+ 1 


47. 31 


+1.04 


/< Leo. 




.66 


1.11 


/JC.V. 






46.87 


1.34 


a Leo. 




.90 


1.04 


aC.V. 






.83 


1.29 


X U.M. 




.50 


1.38 


£Vir. 






.97 


1.02 


/i L. M. 




.56 


1.25 


20 C. V. 
Mean 






.86 


1.32 


Mean 


+1 


47.70 


+1.18 


+ 1 


46.97 


+ 1.20 








(l'»47^70)-(l■»46^« 


)7) 














'- LIS 


+ 1.20 
















c=+0.31 Clamp W. 
















r=— 0.31 Clamp E. 












"a" 
Clamp West. 








"a" 
Clamp East. 




Star. 


Cor. +aA 


A 


star. 




( 


"lor.+aA 


A 




m. 


s. 








m. 


s. 




£ Leo. 


+ 1 


47. 56 


+0.20 


^Leo. 




+ 1 


47.63 


+0.34 


M Leo. 




.32 


+0.16 


^C.V. 






.29 


-0.17 


(X Leo. 




.58 


+0.38 


aC.V. 






.23 


-0.10 


A U. M. 




.07 


-0.22 


£ Vir. 






.29 


+0.40 


/i L. M. 




.17 


-0.06 


20 C. V. 
Mean 






.27 


-0.16 


Mean 


+1 


47. 34 


+0.09 


+ 1 


47.34 


+0.06 


1 Drac. 


+1 


45.31 


-5.13 


4 Drac. 
Diff. 




+1 


45.84 


-3.37 


Diff. 




+2. 03 


+5.22 




+1.50 


+3.43 








+2.03 








+ L 


50 






a=- 


5.22 








«- 3.43 






«=- 


fO.39 

Chrononif 


ter correction. 






a=+0 


44 








£ Leonis slo 


m. s. 
w 1 47.48 














M Leonis slo 


w 


.26 














a Leonis slo 


w 


.43 














A Urspe Maj 


slow- 


.16 














/3 Leo. Min. 


slow 


.19 














/J Leonia slo 


w 


.48 














/J Can. Ven 


slow 


.36 














a Can. Ven 


slow 


.21 














£ Virginis si 
20 Can. Ven 

Mean 


ow 
. slow 


.11 
.34 










slow 1 47. 308 




Epoch 


IP 15-. 
















Epoch 


of exchange+l" 


17. 30^ 













THE ONE HUNDREDTH MERIDIAN. 

MABCH 26, 1902, KIDDER, RED RIVER— Continued. 

Exchange signals received at Red, River. 



73 



From Red River. 


From St 


. Louis. 


From Red River. 


From St 


. Louis. 


h. m. s. 


h. m. 


s. 


h. 


m. 


s. 


h. 


m. 


s. 


10 38 0.50 


10 44 


2.40 


10 


38 


38.45 


10 


44 


40.50 


2.45 




4.44 






40.48 






42. 50 


4.55 




6.50- 






42.52 






44.52 


6.50 




8.60 






44.50 






46.58 


8.50 




10.56 






46.45 






48.54 


10.46 




12.68 






48.50 






50.60 


12.50 




14.65 






50.46 






52. 52 


14.46 




16.65 






52.50 






54.54 


16.45 




18.60 


\ 




54.44 






56.58 


18.48 




20.68 




56.45 






58.50 


20.48 




22.78 






58.50 






60.52 


22.48 




24.70 


























24.50 




26.60 


Mean 10 


38 


29.48 


10 


44 


31.59 


26.50 




28.68 


Chr. slow 


+ 1 


47.30 




+1 


47.30 


28.48 




30.70 


























30.45 




32.60 


Correct 10 


40 


16.78 


10 


46 


18.89 


32.46 




34.70 


St. Louis 11 


19 


28.80 


11 


25 


30.80 


34. 55 




36.60 


























36.45 




38.60 


Diff. 


39 


12.02 




39 


11.91 



) 



Mean 39" ll^ 965, St. Louis to Red River, March 26, 1902. 



MARCH 30, 1902, MACCONNEL, ST. LOUIS. 

Levels. 









CLAMP EAST. 








9 


Om 










IC 30™ 




w. 




E. 






W. 


E. 


Bit. 


14.3 




3.8 






13.5 


5.2 


Rev. 


14.0 




4.0 






13.8 


5.0 


Rev. 


13.0 




4.7 






14.6 


4.3 


Dir. 


14.0 




3.8 






12.7 


6.2 


















Sum 


55.3 




16.3 






54.6 


20.7 


Diff. 


+39.0 








+33.9 


Va 




4.88 










4.24 


d 




0^ 136 








0^ 136 


h 


+ 


0.66 








+ 0.58 








( 


LAMP 


WEST. 








lOh 45m 










ISfc 20» 




W. 




E. 






W. 


E. 


Dir. 


13.1 




5.7 






14.2 


5.9 


Rev. 


14.2 




4.8 






15.0 


5.0 


Rev. 


15.0 




4.0 






15.3 


4.8 


Dir. 


12.2 




6.7 






14.2 


5.9 


Sum 


54. 5 




21.2 






58.7 


21.6 


Diff. 


+33.3 










f37.1 


Vs 




4.16 










4.64 


d 




0^ 136 








0^ 136 


b 


+ 


0.57 










+ 0.63 



74 



THE ONE HUNDREDTH MERIDIAN. 



Star 
Factors 



3 
4 

5 
6 

7 

Mean 
Rate 
Aber. 
6B 



RA 

1st App. 
cC 

Cor.+aA 
uA 

Slow 

Star 

Factors 



Mean 
Rate 
Aber. 
bB 



RA 

1st App 
cC 

Cor.+aA 
aA 

Slow 



MARCH 30, 1902, MACCONNEL, 

Clamp East. 
1 Draconis, 5=81° 46' 



ST. LOUIS— Continued. 



A= 


= -4.77 


a = — 


.40 


B= 


=+5.09 


b= + 


.65 


C= 


=+6.98 




37 




Chron 


T. 






h. m. 


8. 






9 19 


53.1 






20 


24.7 
55.8 






21 


26.6 
58.3 






22 


28.9 






23 


0.3 






9 21 


26.81 
+ .24 
- .11 
+3.31 






9 21 


30.25 






9 23 


16.19 






+1 


45.94 
-2.58 





1 48. 52 



/ii Leonis, 5=26° 25' 

A=+0.23 o=— .40 
B=+1.09 ^=+.63 
C=+l.ll r=-.37 



Chron. 1 




h. m. 


s. 


9 45 


11.9 




17.1 




21.8 




26.9 




31.9 




36.9 




42.1 


9 45 


26.94 




+.18 




-.02 



9 45 
9 47 


27.79 
13.82 


+1 


46.03 
-.40 


1 


46.43 
-.09 



s Leonis, 

A=+0. 27 
B=+1.06 
C=+1.09 



=24° 14' 

= -.40 
= +.64 
= -.37 



17.9 
22.9 

27.9 
32.6 
37.7 

42.7 
47.5 



9 38 32.74 
+.19 
-.02 
+.68 




9 38 33.59 
9 40 19.72 




+1 46. 13 
-.39 




1 46. 52 
-.11 




1 46.63 

a Leonis, «5=12° 

A=+0.45 a=-. 
B=+0.92 6=+. 
C=+1.03 c=-. 

Chron. T. 
h. m. s. 

10 1 11.0 
15.6 
20.2 
24.7 
29.5 
34.0 
38.6 


27' 

40 
61 
37 


10 1 24.80 
+.15 
-.02 
+.56 




10 1 25.49 
10 3 11.56 




+1 46.07 
-.38 




1 46.45 
-.18 





1 46. 63 



THE ONE HUNDREDTH MERIDIAN. 
MARCH 30, 1902, MACCONNEL, ST. LOUIS— Continued. 
A Ursfe Mai.,(5=-43° 24^ 



75 



A=-0.12 


a=t — 


.40 


B=+1.37 


b= + 


.60 


C=+1.38 




.37 


Chron 


T. 




h. 1.1. 


K. 




10 9 


8.5 
14.9 
20.9 
26.9 
33.2 
39.0 
45.3 





^Leo 


Min.,5=37 


= 13 


A=+0.02 


a= — 


.40 


B=+l 


25 


b= + 


.59 


C=+l 


25 




.37 


Chron. T. 




h. 


m. 


s. 




10 


20 


11.7 
17.5 
23.1 
28.7 
34.5 
39.8 
45.8 





10 


9 26.96 
+ .12 
- .02 

+ .82 


10 
10 


9 27.88 
11 13. 99 


+1 46. 11 
- .51 


1 46. 62 
+ .05 



10 20 



73 







- .02 

+ .74 


10 
10 


20 
22 


29.54 
15.68 




+1 


46.14 
- .46 




1 


40.60 
- .01 



1 46. 57 



1 46. 61 





Clamp West 








/iLeonis, 6=15° 7' 




4 Draconie, 6=78° 


10^ 


A=+0.41 a= - 


.30 


A= 


= -3.11 a= - 


.30 


B=+ .95 6= + 


.57 


B= 


=+3.76 6= + 


.58 


B=+1.04 c= + 


.37 


C= 


= +4.88 c= + 


.37 


Chron. T. 






Chron. T. 




h. m. 8. 






h. m. a. 




11 42 4. 7 






12 4 44.9 




9.8 






5 7.2 




14.3 






29.1 




19.0 






50.8 




23.7 






6 12.1 




28.3 






34.2 




33.0 






56.2 





11 


42 18. 97 

- .11 

- .02 
+ .54 


11 
11 


42 19. 38 
44 6. 21 


+1 46. 83 
+ .39 




1 46. 44 
- .12 



12 


5 


50.64 

- .16 

- .07 

+2.18 


12 
12 


5 

7 


52.59 
41.92 




+ 1 


49.33 

+1.81 



1 47. 52 



1 46.56 



76 THE ONE HUNDREDTH MERIDIAN. 

MARCH 30, 1902, MACCONNEL, ST. liOUIS— Continued. 



Star 


ft Cai 


1. Yen., 


5=41° 53^ 


Factors 


A 


=-0.07 


a=-0.30 




B 


=+1.34 


6 = +0.59 




C= 


=+1.35 


c=+0.37 


Wires. 




Chron T. 






li. m. 


s. 


1 




12 27 


2.2 


2 






8.2 


3 






14.4 


4 






20.3 


5 






26.3 


6 






32.1 


7 






38.4 


Mean 


12 27 


20.27 


Rate 






-.23 


Aber. 






—.02 


6B 






+.79 



12 27 
12 29 


20.81 
8.02 


+ 1 


47.21 

+.50 


1 


46.71 
+.02 



1 46. 69 

E Virginia, 5=11° 29^ 

A=+0.46 a=- .30 
B=+0.91 6=+ .61 
C=+1.02 c=+ .37 
Chron T. 
h. m. s. 
12 55 19.6 
24.1 
28.6 
33.3 
38.2 
42.6 
47,2 



12 55 33.36 



-.02 

+.56 



33.60 
20.42 



+1 



46.82 

+.38 



46.44 
-.14 



a Can. \ 


'en.. 


5=38° 51^ 


A =-0.02 


a=- .30 


B=+l. 


29 


ft = + .60 


C=+l. 


29 


= + .37 


Chron T. 


h. 


m. 


s. 


12 


49 


24.3 
30.2 
36.1 
41.7 
47.5 
53.0 
58.9 


12 


49 


41.67 
-.27 
-.02 

+.77 


12 


49 


42.15 


12 


51 


29.17 




+ 1 


47.02 

+.48 




1 


46.54 
+.01 




1 


46. 53 


20 Can. 


Yen., 5=41° 5 


Lost, clouds 


. 



1 46. 58 



THE ONE HUNDREDTH MERIDIAN. 77 

MARCH 30, 1902, MACCONNEL, ST. LOUIS— Continued. 
Computations. 



Clamp East. 




1st App. 


C. 


m. s. 




+1 46. 13 


+1.09 


.03 


1.11 


.07 


.03 


.11 


1.38 


.14 


1.25 


+1 46.10 


+L17 



star. 

/J Leo. 
/JC.V. 
aC.Y. 
e Vir. 



Mean 



(l^"46M0)-(l^"46^97) 



1.17 



1.17 



c=— 0.37 Clamp East. 
c=+0.37 Clamp West. 



Clamp West. 
1st App. 



+1 



46.83 +1.04 

47. 21 1. 35 

47. 02 1. 29 

46.82 1.02 



+1 46.97 +1.17 



Star. 


Clamp East. 
Cor.+aA 


A 


" Star. 


Clamp West. 
Cor.+aA 


A 


£ Leo. 
fi Leo. 
a Leo. 
AU. M. 
/SL. M. 


m. 

+ 1 


s. 
46.52 
.43 
.45 
.62 
.60 


+0.27 
+0.23 
+0.45 
-0.12 
+0.02 

+0.17 


/JLeo. 
/i C. V. 
a C. V. 
£ Vir. 

Mean 


+1 


46.44 
.71 
.54 
.44 


+0.41 
—0.07 
-0.02 
+0.46 


Mean 


+1 


46.52 


+1 


46.53 


+0.19 


1 Drac. 


+ 1 


48.52 
-2.00 


-4.77 


4 Drac. 
Diff. 


+1 


47.52 
-0.99 


-3.11 


Diff. 


+4.94 


+3.30 






a=: 


-2.00 
4.94 






a=Z 


0.99 
3.30 








-0. 40 






a=— 


0.30 



Chronometer corrections. 



s Leonis slow 
jii Leonis slow 
a Leonis slow 
A Ursje Maj. slow 
/S Leo. Mill, slow 
/J Leonis slow 
fi Can. Ven. slow 
a Can. Ven. slow 
e Virginis slow 



46.63 
.52 
.63 
.57 
.61 
.56 
.69 
53 
.58 



Mean slow 1 46.59 Epoch of exchange. 



78 



THi: ONE HUNDREDTH MERIDIAN. 



MARCH 30, 1902, MACCONNEL, ST. LOUIS— Continued. 
Exchange signals received at St. Louis. 



From Red Rivur. 


FromS 


. Louis. 


h. m. s. 


h. 


m. 


s. 


11 2 16.40 


11 


3 


59.90 


18.40 




4 


2.43 


20.40 






4.45 


22.42 






6.50 


24.44 






8.43 


26.40 






10.50 


28.40 






12.48 


30.40 






14.50 


32.45 






16.43 


34.44 






18.40 


36.38 






20.40 


38.39 






22.45 


40.40 






24.40 


42.45 






26.38 


44.44 






28.36 


46.42 






30.40 


48.50 






32.40 


50.42 






34.41 



From Re 


d River. 


From St. Louis. 


h. m. 


s. 


h. 


m 


s. 


11 2 


52.42 
54.46 
56.50 
58.50 


11 


4 


36.40 

38.48 
40. 48 
42.50 


3 


00:44 
2.48 
4.47 
6.50 
8.40 
10.50 
12.45 
14.35 






44.46 
46.44 
48.40 
50.40 
52.47 
54. 50 
56.43 
58.38 



Mean 11 2 45.43 

Chr. slow +1 46. 59 



11 4 29. 41 
+1 46.59 



Correct 11 4 32.02 11 6 16.00 



MARCH 30, 1902, KIDDER, RED RIVER. 

Levels. 
CIiAMP WEST. 





Dir. 


9h Om 


Rev. 


Dir. 


lOh 45m 


Rev. 


w. 

E. 


49.3 
12.4 




13.2 
50.1 


50.0 
11.1 




11.1 
50.0 


W. 
E. 


49.0 
11.9 




13.0 
50.0 


50.0 
10.6 




11.6 
50.8 


Sum 
Diff. 

d 
h 


122.6 


-3.7 
0.46 
0^ 11] 

-0.05 


126.3 

CLAMP EAST. 


121.7 


-1.8 
0.225 
0^ 11] 

-0.03 


123.5 




Dir. 


111- 30^ 


Rev. 


Dir. 


ISh om 


Rev. 


W. 

E. 


50.8 
10.5 




9.8 
50.0 


50.4 
9.7 




11.0 
51.9 


W. 
E. 


51.5 
11.0 




10.4 
50.9 


51.5 
10.4 




11.1 
52.0 


Sum. 
Diff. 

6 


123.8 121.1 
+2.7 
0. 34 
0'. Ill 
+0.04 


122.0 


126.0 
-4.0 

0.50 

0^ 111 
-0.06 



THE ONE HUNDREDTH MERIDIAN. 



79 



MARCH 30, 1902, KIDDER, RED RIVER— Continued. 

Clamp West. 
1 Draconis, 5=81° 46' s Leonia, 5=24° 14' 



A = -5. 13 
B=+4.73 

C =+6.98 


a=+.44 
6 = -. 05 

(■=+.25. 


Chroi 


. T. 


h. m. 


s. 


9 16 
18 
21 
24 
26 


21.3 
55.2 
25.4 
2.9 
33.2 


9 21 


27.60 
-.15 
^-.23 


9 21 
9 23 


27.22 
16.19 


+ 1 


48.97 
+1.76 


1 


47.21 


H Leonis, 5= 


26° 28' 


A=+0.16 
B=+1.10 
C= + l.ll 


a=+.44 
6=-. 04 

c = +.25 


Chroi 


. T 


h. m. 


s. 


9 44 
45 
46 


35.1 
59.8 • 
23.6 
48.8 
13.0 


9 45 


24.06 
-.02 
-.04 


9 45 
9 47 


24. 00 
13.82 


+1 


49.82 

+ .28 


1 


49.54 

+.07 


1 


49.47 



A=+0.20 


a=+ 


44 


B=+1.09 


h = - 


05 


C =+l. 10 


c= + 


25 


Oliro 


1. T. 




h. m 


s. 




9 37 


41.9 




38 


6.0 
29.5 
54.2 




39 


17.8 





9 


38 


29.88 
-.02 
-.05 


9 
9 


38 
40 


29.81 
19.72 




+1 


49. 91 

+.28 




1 


49. 63 
+ .09 





1 


49.54 




a 


Leonis, 5=12° 


27' 


B= 


=+0.38 
=+1.03 
=+1.04 


rt=+. 44 
6 = -. 04 

c = + .25 




Chroii. T. 






h. m 


K. 






10 

1 

2 


36.8 
59.1 
21.2 

44.2 
6.6 





10 1 


21.58 
-.02 
-.04 


10 1 
10 3 


21.52 
11.56 


+1 


50.04 

+ .26 


1 


49.78 

+ .17 



80 



THE ONE HUNDREDTH MERIDIAN. 



MARCH 30, 1902, KIDDER, RED RIVER— Continued. 



AUrsaeMaj., 5=43° 24^ 


j3Leo. Min., 


5=37° 13 


A=-0.22 a=+.44 


A=-0.06 


a= + .44 


B=+1.36 6 = -. 03 


B =+1.25 


b=-.03 


C=+1.38 c=+.25 


C=+1.25 


c =+.25 


Chron. T. 


Chron 


. T. 


h. m. s. 


h. m. 


s. 


10 8 24.1 


10 19 


31.0 


54.3 




58.7 


9 24.1 


20 


25.5 


55.3 




54.2 


10 24.8 


21 


20.9 



10 9 


24.52 
-.02 
-.04 


10 9 
10 11 


24.46 
13.99 


+1 


49.53 
+.35 


1 


49.18 
-.10 



10 20 


26.06 
-.02 
-.04 


10 20 
10 22 


26.00 
15.68 


+1 


49.68 
+ .31 


1 


49.37 
-.03 



1 49.40 



Clamp East. 



y5 Lenois, 5=15° 7' 



4 Draconis, 5=78° 10' 



A=+0.34 a= 
B=+0.98 ft- 
C=+1.04 c = 

Chron. T. 



41 31.4 
54.0 

42 17.2 





43 


2.5 


11 


42 


16.94 
-.02 
+.03 


11 
11 


42 
44 


16.95 
6.21 




+1 


49.26 
-.26 




1 


49.52 
+.16 



A=— 3.37 a=+.48 
B=+3.53 6=+. 01 
C = +4.88 c = -.25 





Chron T. 


h. 


m. 


s. 


12 


2 


22.3 




4 


6.8 




5 


56.5 




7 


42.1 




9 


29.0 


12 


5 


55.34 
-.09 
+.04 


12 


5 


55.29 


12 


7 


41.92 




-fl 


46.63 
-1.23 



1 47.86 



1 49.36 



THE ONE HUNDEEDTH MERIDIAN. 
MARCH 30, 1902, KIDDER, RED RIVER— Continued. 



81 



Star 
Factors 



/S Can. Yen., 5=41° 53' 



4 
5 

Mean 
Aber. 
feB 



•RA 



cC 

Cor.+aA 
aA 

Slow 

Star 

Factors 



1 
2 
3 
4 
5 

Mean 
Aber. 
6B 



RA 

1st App. 
cC 

Cor.+aA 
aA 



A=-0.17 
B=+1.32 
0=+1.34 



=+.48 
= -.01 
= -.25 



26 20.4 
49.0 

27 19.5 
48.4 

28 18. 1 



12 27 


19.08 
-.02 
-.01 


12 27 
12 29 


19.05 
8.02 


+1 


48.97 
-.34 


1 


49.31 
-.08 



£ Virginia, 



49.39 
=11° 29' 



A=+0.40 a=+.48 
B=+0.94 6=-. 05 
C=+1.02 c=-.25 

Chron. T. 
h. m. s. 
12 54 46.5 

55 8.4 
31.5 
53.4 

56 15.9 



12 55. 31.14 
-.02 
-.05 

12 55 31.07 
12 57 20.42 

+1 49.35 
-.26 



49.61 
+.19 



Slow 1 49.42 
H. Doc. 375 6 



« Can. Yen., 5=38° 51' 

A=-0. 10 a=+.48 
B=+1.28 6=-. 03 

C=+1.29 c=-.25 

Chron. T. 
h. m. s. 
12 48 44.0 

49 11.3 
40.3 

50 8.1 
36.5 



12 


49 


40.04 
-.02 
-.04 


12 
12 


49 
51 


39.98 
29.17 




+1 


49.19 
-.33 




1 


49.52 
-.05 



1 49.57 
20Can.Ven., 5=41° 5' 

A=-0.16 a=+.48 
B=+1.32 6=— .07 
C=+1.32 c=-.25 

Chron. T. 
h. m. s. 
13 10 24.1 
52.9 

11 22.6 
51.6 

12 20.5 



13 



11 22. 34 
-.02 
-.09 

13 11 22. 23 
13 13 11.46 

+1 49. 23 
-.33 

1 49. 56 



1 49.64 



82 



THE ONE HUNDREDTH MERIDIAN. 



MARCH 30, 1902, KIDDER, RED RIVER— Continued. 
Computations. 



Star. 


Clamp "West. 
1st App. 


C. 


Star. 


Clamp East. 
1st App. 


C. 




m. 


s. 






m. 


s. 




E Leo. 

/< Leo. 

a L§o. 
A r. M. 
/i L. M. 


+ 1 


49.91 
49.82 
50,04 
49.53 
49.68 


+1.10 
1.11 
1.04 
1.38 
1.25 


^Leo. 

fJ C. V. 

a C. V. 

£ Vir. 

20 C. V. 


+1 


49.26 
48.97 
49.19 
49.35 
49.23 


+ 1.04 
1.34 
1.29 
1.02 
1.32 


Mean 


+1 


49.80 


+ 1.18 


Mean 


+ 1 


49.20 


+1.20 








(1°' 49^80) -(l■"49^ 20) 
^ 1.18 + 1.20 














c=+0. 25 
c=-0.25 


Clamp West. 
Clamp East. 








Star. 


(Uamp West. 
Cor.+aA. 


A. 


star. 


Clamp East. 
Cor.+aA. 


A. 




m. 


s. 






m. 


s. 




s Leo. 

/I Leo. 

a Leo. 
A U. M. 
/i L. M. 


+1 


49.63 
.54 

.78 
.18 
.37 


+0.20 
+0.16 
+0.38 
-^0.22 
-0. 06 


^Leo. 

/i C. V. 

a C. V. 

£ Vir. 

20 C. V. 

Mean 


+1 


49.52 
.31 
.52 
.61 
.56 


-to. 34 
-0.17 
-0. 10 
+0.40 
-0.16 


Mean 


+1 


49.50 


+0. 09 


+1 


49.50 


+0.06 


1 Drac. 


+1 


47.21 


-5. 13 


4 Drac;. 
Diff. 


+ 1 


47.86 


-3.37 


Diff. 




+2.29 


+5. 22 




+1.64 


+3. 43 






5.22 






" 3.43 






n = +0 


44 






a=+0.48 



Chronometer corrections. 



e Leonis slow 


1 49. 54 


ft Leonis slow 


.47 


a Leonis slow 


.61 


A. Ursfe Maj. slow 


.28 


^ Leo. Min. slow 


.40 


/3 Leonis slow 


.36 


/i Can. Ven. slow 


.39 


a Can. Ven. slow 


.57 


£ Virginia slow 


.42 


20 Can. Ven. slow 


.64 


Mean slow 


1 49. 47 



1 49. 47 Epoch of exchange. 



THE ONE HUNDKEDTH MERIDIAN. 



83 



MARCH 30, 1902, KIDDER, RED RIVER— Continued. 
Exchange signah received at Red River. 



From Red River. 


From St. 


Louis. 


h. m. s. 


h. 


m. 


s. 


10 23 1.48 


10 


24 


45.05 


3.41 






47.60 


5.44 






49.60 


7.50 






51.60 


9.48 






53.54 


11.46 






55.62 


13.45 






57.60 


15.45 






59.62 


17.50 




25 


1.60 


19.48 






3.52 


21.44 






5.56 


23.42 






7.57 


25.45 






9.50 


27.50 






11.50 


29.50 






13.50 


31.49 






15.55 


33. 52 






17.55 


35.48 






19.60 


37.50 






21.58 



From Rec 


I River. 


From St. 


Louis. 


h. m. 


s. 


h. 


m. 


s. 


10 23 


39.50 
41.53 
43.51 
45.49 
47.50 
49.50 
51.53 
53.50 
55.52 
57.50 
59.40 


10 


25 


23.62 
25.60 
27.62 
29.60 
31.60 
33.60 
35.60 
37.60 
39.62 
41.60 
43.50 



Mean 10 23 30.48 
Chr.slow +1 49.47 



Mean 39'" 12^02, St. Louis to Ked River, 



Correct 10 25 19.95 

St. Louis 11 4 32.02 

Diff. +39 12. 07 

March 30, 1902. 



10 25 14. 56 
+1 49.47 



10 27 4.03 

11 6 16.00 



39 11.97 



APRIL 4, 1902, MACCONNEL, ST. LOUIS. 

Levels. 









CLAMP WEST. 










9h o- 






IC 35>» 




w. 




E. 


w. 


E. 


Dir. 


11.3 




7.0 


11.1 


6.9 


Rev. 


8.0 




10.4 


7.8 


10.0 


Rev. 


8.1 




10.0 


7.3 


10.8 


Dir. 


10.7 




7.0 


10.0 


8.0 


Sum 


38.1 




34.4 


36.2 


35.7 


Diff. 




+3.7 






+0.5 


Vs 




0.46 






0.06 


d 




0^ 136 




0'. 136 


b 




+0.06 

llh 34U, 


CLAMP EAST. 




+0.01 




w. 




E. 


W. 


E. 


Dir. 


9.9 




8.1 


9.8 


8.9 


Rev. 


7.1 




ILO 


7.6 


10.9 


Rev. 


7.5 




10.8 


7.3 


11.0 


Dir. 


10.8 




7.1 


8.4 


9.7 














Sum 


35.3 




37.0 


33.1 


.30.5 


Diff. 




-1.7 






+2.6 


V8 




0.21 






0.32 


d 




0\ 136 




0^ 136 


b 




-0.03 






+0.04 



84 



THE ONE HUNDEEDTH MERIDIAN. 



APRIL 4, 1902, MACCONNEL, ST. LOUIS— Continued. 



Clamp West. 



1 Draconis, (5=81° W 



e Leonis, 



=24° 14^ 



A= 


=-4.77 


a = -0.08 


B = 


=+5. 09 


b = + 


.06 


C- 


= +6. 98 


c = + 


.35 




Chron. T. 






h. m 


s. 






9 20 


10.0 
41.3 






21 


12.8 
43.6 






22 


14.4 
46.4 






23 


18.1 






9 21 


43.80 
+.24 
-.11 
+.31 






9 21 


44.24 






9 23 


15.61 






+1 


31.37 
+2.43 





1 28.94 



M Leonis, 5=26° 25' 

A = +0.23 a=-.08 
B = +1.09 6=+. 04 
C =+l.ll c =+.35 

Chron. T. 

h. m. s. 

9 45 29.6 
34.8 
39.6 
44.4 
49.8 
54.9 
59.7 



45 44.69 
+.18 
-.02 
+.04 



9 45 

9 47 


44.89 
13.75 


+1 


28.86 
+.39 


1 


28.47 
-.02 



A=+0.27 


o = -0.08 


B=+1.06 


fe = + .05 


C = +1.09 


c = + .35 


Chron. T. 


h. m. 


s. 


9 38 


35.9 




40.9 




45.7 




50.5 




55.5 


39 


0.3 




5.4 


9 38 


50.60 




+.19 




-.02 




+.05 


9 38 


50.82 


9 40 


19.65 


+1 


28.83 




+.38 


1 


28.45 




-.02 


1 


28.47 


a Leonis, d= 


=12° 27' 



A=+0.45 a=-.08 
B = + .92 6=+. 03 
C=+L03 c =+.35 

Chron. T. 

h. m. s. 

10 1 28.6 
33.5 
37.9 
42.6 
47.1 
51.7 
56.3 



10 1 


42.53 
+ .15 
-.02 
+.03 


10 1 
10 3 


42.69 
11.51 


+1 


28.82 
+.36 


1 


28.46 
-.04 



1 28.49 



1 28.50 



THE ONE HUNDREDTH MERIDIAN. 

APRIL 4, 1902, MACCONNEL, ST. LOUIS— Continued. 

A Ursffi Maj., 5^43° 24^ fi Leo. Min., 5=37° 13^ 



A=-0.12 a=-. 


08 


A= 


=+0.02 a=-.08 


B=+1.37 6=+. 


02 


B= 


=+1.25 6=+. 01 


C=+1.38 c=+.35 


C= 


=+1.25 c=+.35 


Chron. T. 






Chron. T. 


h. m. s. 






h. m. s. 


10 9 26.2 






10 20 29.7 


32.3 






34.9 


38.6 






40.7 


44.8 






46.2 


50.8 






52.0 


57.1 






57.5 


10 3.2 






21 3.3 



10 


9 


44.71 
+.12 
-.02 
+.03 


10 
10 


9 
11 


44.84 
13.92 




+ 1 


29.08 

+.48 




1 


28.60 
+.01 



1 28. 59 



/3 Leonis, 5=15' 

A=+0.41 a=- 
B=+0.95 b=- 
C=+1.04 r=- 

Chroii. T. 
h. m. s. 
11 42 24. 1 



33.8 
38.3 



47.4 
52.1 



11 


42 


38.21 
-.11 
-.02 
-.02 


11 
11 


42 
44 


38.06 
6.20 




+1 


28.14 
-.36 




1 


28.50 
-.03 



10 20 


46.33 
+.09 
-.02 
+.01 


10 20 
10 22 


46.41 
15.62 


+1 


29.21 

+.44 


1 


28.77 
0.00 



Clamp East. 



4 Draconis, 5=78° 10^ 

A=-3. 11 a=-.08 
B=+3.76 b=-.01 
C=+4.88 c=-.35 

Chron. T. 

Lost. 



1 28.53 



86 



THE ONE HUNDREDTH MERIDIAN. 



Star 
Factors 



APRIL 4, 1902, MACCONNEL, 

/i Can. Yen., 5=41° 53^ 



A=-0.07 a= 
B=+r.34 b=- 
C=+1.35 c= 



Chron. T. 

m. s. 

27 22.1 
28.3 
34.1 
40.0 
46.4 
52.4 
58.3 



12 


27 


40.23 
-.23 
-.02 
-.00 


12 

12 


27 
29 


39.98 
8.02 




+1 


28.04 
-.47 




1 


28.51 
+.01 



1 28. 50 



eVirginis, 5 = 11° 29' 



12 55 
12 57 


52.24 
20.45 


+1 


28.21 
-.36 


1 


28.57 
-.04 



ST. LOUIS— Continued. 
(tCan. Ven., 5=38° 51' 



A=— 0. 02 


o — — 


08 


B =+1.29 


i= + 


01 


C =+1.29 


(• = — 


35 


Chron 


T. 




h. m. 


s. 




12 49 


43.9 
50.1 

55.8 




50 


1.3 

7.0 

12.9 

18.6 




12 50 


1.39 
-.27 
-.02 
+.01 





12 50 
12 51 


1.11 

29.20 


+1 


28.09 
-.45 


1 


28. 54 
.00 



1 28. 54 
20 Can. Yen., <5=41° 5' 



A=+0.46 o=- 


.08 


A 


= -0.06 


a=-.08 


B =+0.91 6= +.02 


B 


=+1.32 


?>=+.03 


C =+1.02 c=- 


.35 


C 


=+1.32 


c=-.35 


Chron. T. 






Chron 


T. 


h. m. s. 






h. m. 


.s. 


12 55 38.9 






13 11 


25.9 


43.4 








31.9 


48.1 








38.2 


52.5 








43.6 


57.1 








49.3 


56 1. 7 








55.3 


6.1 






12 


1.4 


12 55 52.54 


13 11 


43.66 


-.30 








-.33 


-.02 








-.02 


+.02 








+.04 



13 11 
13 13 


43.35 
11.49 


+1 


28.14 
-.46 


1 


28.60 
+.01 



1 28.61 



,59 



THE ONE HUNBEEDTH MEKIDIAN. 



87 



APRIL 4, 1902, MACCONNEIi, ST. LOUIS— Continued 









Compidations. 










Star 


Clamp West. 
1st App. 


C 


c" 

Star 




Clamp East. 
1st App. 


(• 




m. 


s. 








m. 


s. 




£ Leo. 
u Leo. 
«Leo. 
AU.M. 
/iL.M. 


4-1 


28.83 
28.86 
28.82 
29.08 
29.21 


+1.09 
1.11 
1.03 
1.38 
1.25 


/iLeo. 
/5C.V. 
nrC.V. 
£Vir. 
20 C. V. 

Mean 




+1 


28.14 
.04 
.09 
.21 
.14 


+1.04 
1.35 
1.29 
1.02 
1.32 


Mean 


1 


28.96 


1.17 


1 


28.12 


1.24 






c= 


(!■" 28^96)-(l" 28\ 


12) 










1."17" 


+ L24 







=+0.85 Clamp West. 
:— 0.36 Clamp East. 



star. 


Cor. + aX 


A 






m 


s. 






£ Leo. 


+ 1 


28.45 


+0.27 




>uLeo. 




.47 


+0.23 




a Leo. 




.46 


+0.45 




AU.M. 




.60 


-0.12 




/3L.M. 




.77 


+0.02 




/SLeo. 




.50 


+0.41 




fiC.Y. 




.51 


-0. 07 




aC.V. 




.54 


-0.02 




eVir. 




.57 


+0.46 




20 C. V. 




.60 


-0.06 




Mean 


+1 
+1 


28.55 
28.94 


+0.16 
-4.77 


a=-0.39 


1 Drac. 


4.93 


Diff. 


- 


- 0.39 


+4.93 


o = -0.08 



Chronometer corrections. 



£ Leonis slow 


1 28.47 


M Leonis slow 


.49 


a Leonis slow 


.50 


AUrsae Maj. slow 


.59 


fJ Leo. INI in slow 


.77 


/S Leonis slow 


.53 


fi Can. Yen. slow 


.50 


a Can. Ven. slow 


.54 


£ Virginis slow 


.61 


20 Can. Ven. slow^ 


.59 


Mean slow 


1 28.56 



Epoch of exchange. 



88 THE ONE HUNDREDTH. MERIDIAN. 

APRIL 4, 1902, MACCONNEL, ST. LOUIS— Continued. 

Exchange signals received at St. Louis. 



From Red River. 


From St 


Louis. 




From Red River. 


From St 


Louis. 


h. m. 


s. 


h. 


m. 


s. 




h. 


m. 


s. 


h. 


m. 


s. 


11 17 


34.90 
36.99 
38.90 
40.90 
42.92 
44.91 
46.97 
48.91 
50.92 
52.90 
54.97 
56.93 
58.99 


n 


21 


0.66 

2.70 

4.96 

7.05 

9.00 

9.09 

13.00 

15.00 

17.00 

19.00 

21.01 

23.11 

25.06 




11 


18 


10.94 
12.99 
14.98 
16.99 
18.98 
20.95 
22.97 
24.98 
26.97 
28.99 
30.96 
32.90 


11 


21 


36.93 
38.86 
40.87 
42.93 
45.30 
47.03 
49.00 
51.04 
52.93 
55.02 
56.92 
58.81 
















18 


0.97 






27.04 


Mean 


11 


18 


3.95 


11 


21 


29.91 




2.93 






29.00 


Chr. slow 




+ 1 


28.56 




+ 1 


28.56 




4.92 






31.08 
































6.98 






33.02 


Correct 


11 


19 


32.51 


11 


22 


58.47 




8.98 






34.98 

















AFBIL 4, 1902, KIDDER, RED RIVER. 

Levels. 

CLAMP WEST. 



9h Qm 



w. 

E. 

W. 

E. 

Sum 
Diff. 

'Is 
d 
b 



Dir. 
50.0 
16.1 

50.7 
16.1 

132.9 



Rev. 
12.6 
46.8 

12.6 
46.9 



118.9 



+ 14.0 
1.75 
OMll 

+0.19 



Dir. 


Rev. 


51.5 
15.0 


11.0 

47.-7 


53.0 
16.0 


9.7 
46.5 


L35.5 

+20 

2 

0« 

+0 


114.9 
6 
57 
111 
29 



CLAMP EAST. 



w. 

E. 

W. 

E. 

Sum 
Diff. 

} 

b 



Dir. 
50.8 
13.8 

52.5 
15.0 

132.1 



Rev. 
10.5 
47.8 



46. 
114.^ 



+17.5 
2.20 

o^ 111 

+0.24 



Dir. 
51.7 
13.7 

53.0 
15.0 

133.4 



Rev. 

9.4 

47.5 

9.3 

47.5 



113.7 



+19.7 
2.46 
0«. Ill 
+0.27 



THE ONE HUNDEEDTH MERIDIAN. 



89 



APRIL 4, 1902, KIDDER, RED RIVER— Continued. 



Star 
Factors 



1 
2 
3 
4 
5 

Mean 
Aber. 
6B 



RA 

Ist App. 
cC 

Cor.+aA 
aA 

Slow 

Star 

Factors 



Clamp West. 



1 Draconis, 5=81° 46^ 

A=-5.13 a=+.52 
B=+4.73 6=+. 20 

C=^-6.98 c=+.26 



Chron. T. 
h. m. I 
9 16 

18 

21 

24 

26 



18.5 
52.5 
24.1 
1.4 
32.2 



9 21 25.74 
-.15 

+.95 

9 21 26.54 
9 23 15.61 

+1 49.07 
+1.79 

1 47. 28 



// Leonis, 5=26° 28^ 

A=+0.16 « =+.52 
B=+1.10 6=+. 23 
0=+l.ll c=+.26 



s Leonis, 5=24° 14^ 



A 


=+0. 20 


ffl=+.52 


a 


=+1.09 


b=+ 


21 


c 


=+1.10 


c= + 


26 




Chroi 


.T. 






h. m. 


s. 






9 37 


40.9 






38 


4.9 
28.8 
53.5 






39 


17.1 





9 38 29.04 
-.02 

+.26 

9 38 29.25 
9 40 19.65 

+1 50.40 
+.28 

1 50. 12 
+.11 

1 50. 01 

a Leonis, 5=12° 27^ 

A=+0.38 a=+.52 
B=+1.03 6=+. 24 
C=+1.04 o=+.26 



Mean 
Aber 
bB 



RA 

1st App 
cC 

Cor.+aA 
aA 

Slow 



Chron. T. 
m. s. 

44 34.2 
58.8 

45 22.9 
48.2 

46 12. 2 



9 45 


23.26 
-.02 

+.25 


9 45 

9 47 


23.49 
13.75 


+1 


50.26 

+.28 


1 


49.98 
+.08 



Chron. T. 
h. m. s. 

10 35.5 
58.2 

1 20.3 
43.6 

2 5.5 



10 


1 


20.62 
-.02 

+.25 


10 
10 


1 

3 


20.85 
11.51 




1 


50.66 

+.27 




1 


50.37 
^.20 



1 49. 90 



1 50.19 



90 



THE ONE HUNDREDTH MERIDIAN. 



APRIL 4, 1902, KIDDER, 

AUrsaeMaj., 5=43° 24^ 



RED RIVER— Contiuueil. 
/iLeo. Mill., 5=37° 13^ 



A=- 


0.22 


a=+.52 


A 


= _ 


0.06 


«=+. 52 


B=+1.36 


b= + 


26 


B 


=+1.25 


6=+. 27 


C= + 1.38 


c= + 


26 


C: 


=+1.25 


c=+.26 




Chroii 


. T. 








Chrou. T. 


h. 


m. 


s. 






h. 


m. 


s. 


10 


8 


23.1 
53.5 






10 


19 


29.8 
57.7 




9 


23.1 
54.0 








20 


24.7 
53.1 




10 


23.9 








21 


20.1 


10 


9 


23.52 


10 


20 


25.08 






-.02 










-.02 






+.35 






10 


20 


+.34 


10 


9 


23.85 


25.40 


10 


11 


13.92 






10 


22 


15.62 




+1 


50.07 




+1 


50.22 






+.35 










+.32 




1 


49.72 




1 


49.90 






-.12 










-.03 




1 


49.84 




1 


49.93 



Leonis, 5 = 15° 



Clamp East. 



4 Draconis, 5 = 78° 10^ 



A =+0.34 


« = + 


45 


A 


= —. 


3.37 a=+.45 


B=+0.98 


fe= + 


24 


B= 


=+3.53 6=+. 24 


C=+1.04 


c= — 


26 


C= 


=+4.88 c=-.26 


Chron 


T. 








Chron. T. 


h. m. 


s. 






h. 


m. s. 


11 41 


30.8 
53.1 






12 


2 20.9 
4 5.6 


42 


16.4 
38.9 








5 55.4 
7 40.0 


43 


1.4 








9 27.4 


11 42 


16.12 


12 


5 53.86 




-.02 








- .09 




+.24 








+ .85 


11 42 


16.34 


12 


5 54.62 


11 44 


6.20 






12 


7 41.82 


+1 


49.86 




+ 1 47.20 




-.27 








-1.25 


1 


50.13 




1 48. 45 




+.15 











1 49. 98 



THE ONE HUNDKEDTH MERIDIAN. 
APRIL 4, 1902, KIDDER, RED RIVER— Continued. 
/iCan. Wen., (^=41° 53^ 



91 



Mean 
Aber. 
6B 



RA 

1st App. 

cC 

Cor.+aA 
aA 

Slow 

Star 

Factors 



1 
2 
3 
4 

5 

Mean 
Aber. 
6B 



RA 

1st App. 
cC 

Cor.+aA 
oA 

Slow 



A=-C 


.17 


o= + 


45 


B=+] 


.32 


h=+ 


25 


C=+1.34 


f=- 


26 


Chron 


T. 




h. 


m. 


s. 




12 


26 


19.3 

48.4 






27 


18.5 
47.4 






28 


17.2 




12 


27 


18.16 
-.02 
+.33 




12 


27 


18.47 




12 


29 


8.02 






-fl 


49.55 
-.34 






1 


49.89 
-.08 






1 


49.97 




£ Virginia 


6^=11° 


29^ 



A=+0.40 
B=+0.94 
C=+1.02 

Chron. T. 
h. m. s. 
12 54 45. 7 

55 7.4 
30.6 
52.6 

56 15.0 



a=+.45 
(■=-.26 



12 


55 


30.26 
-.02 

+.25 


12 
12 


55 

57 


30.49 
20.45 




fl 


49.96 
-.26 




1 


50.22 

+.18 



■-Can. Yen., 


(5=38° 


bV 


A=-0.10 


a=+ 


45 


B=+1.28 


h=+ 


26 


C-+1.29 


(■=— 


26 


Chron 


T. 




h. m. 


s. " 




12 48 


43.1 




49 


10.9 
40.0 




50 


7.5 
35.8 





12 


49 


39.46 
-.02 
+.33 


12 
12 


49 
51 


39.77 
29.20 




+1 


49.43 
-.33 




1 


49.76 
-.05 




1 


49.81 


20 Can. Yen. 


5=41° 5' 


A=-0.16 
B=+1.32 

C=+1.32 


a=+.45 
6=+. 27 
c=-.26 




Chron. T. 


h. 


m. 


s. 


13 


10 
11 
12 


23.6 
51.8 
21.9 
50.8 
19.9 


13 


11 


21.60 
-.02 
+.35 


13 

12 


11 
13 


21.93 
11.49 




+1 


49.56 
-.34 




1 


49.90 
-.07 



1 50.04 



1 49.97 



92 



THE ONE HUNDREDTH MERIDIAN. 



APRIL 4, 1902, KIDDER, RED RIVER— Continued. 

Computations. 





Clamp West. 






Clamp East. 




Star. 


1st App. 


C. 


Star. 


Is 


App. 


C. 




m. 


s. 






m. 


s. 




s Leo. 


+ 1 


50. 40 


+1.10 


^Leo. 


+ 1 


49.86 


+1.04 


/( Leo. 




.26 


1.11 


fJ C. V. 




.55 


1.34 


«Leo. 




.66 


1.04 


ex C. V. 




.43 


1.29 


A U. M. 




.07 


1.38 


£ Vir. 




.96 


1.02 


/3L.M. 




.22 


1.25 


20 C. V. 
Mean 




.56 


1.32 


Mean 


+1 


50.32 


+1.18 


+ 1 


49.67 


+1.20 








^ (l-50«32)-(l'"49'67) 












1.18 + 1.20 












c=+0.26 


Clamp West. 












c=-0.26 


Clamp East. 








"a" 
Clamp West. 






Clamp East. 




Star. 


Cor.+aA 


A. 


star. 


Cor.+aA 


A. 




m. 


s. 






m. 


8. 




£Leo. 


+ 1 


50.12 


+0.20 


^Leo. 


+ 1 


50.13 


+0.34 


/ii Leo. 




49.98 


+0.16 


/3C.V. 




49. 89- 


-0.17 


«Leo. 




50.39 


+0.38 


aC. V. 




49.76 


-0.10 


AU.M. 




49.72 


-0.22 


fVir. 




50.22 


+ 0.40 


/iL.M 




49.90 


-0.06 


20 C. V. 
Mean 




49.90 


-0.16 


Mean 


+1 


50.02 


+0.09 


+1 


49.98 


+ 0.06 


1 Drac. 


+ 1 


47.28 


-5.13 


4 Drac. 
Diff. 


+1 


48.45 


-3.37 


Diff. 




+2.74 


+ 5.22 




+1.53 


+3.43 






„_+2.74 






«-+!• 


53 








5.22 






3.43 






a=+0. 52 






a=+0.45 








Chronome 


ter corrections. 












£ Leonis slov 


m 

V 1 


s. 
50.01 












M Leonis sIoa 


V 


49.90 












a Leonis slo 


w 


50.19 












A Urspe Maj. 


slow- 


49.84 












ySLeo. Mm. 


slow 


49.93 












yS Leonis slo 


w 


49.98 












/?Can. Ven. 


slow 


49.97 












a Can. Ven. 


slow 


49.81 












£ Virginis sl( 


)W 


50. 04 












20 Can. Ven 
Mean 


slow- 
slow 1 


49.97 


och of e 






49. 97 Et 


xchange. 



THE ONE HUNDREDTH MERIDIAN. 



93 



APRIL 4, 1902, KIDDER, RED RIVER— Continued. 
Exchange signals received at Red River. 



From Red River. 


From St. Louis. 


h. m. s. 


h. m. 


s. 


10 38 1.42 


10 41 


27.30 


3.50 




29.40 


5.45 




31.60 


7.40 




33.68 


9.45 




35.60 


11.48 




37.70 


13.50 




39.62 


15.44 




41.63 


17.45 




43.70 


19.44 




45.60 


21.48 




47.60 


23.48 




49.78 


25.50 




51.68 


27.45 




53.68 


29.44 




55.62 


31.42 




57.70 


33.48 




59.68 


35.47 


42 


1.60 


37.45 




3.55 



From Red River. 


From St 


Louis. 


h. m. s. 


h. 


m. 


8. 


10 38 39.50 


10 


42 


5.50 


41.48 






7.50 


43.49 






9.55 


45.50 






11.83 


47.50 






13.70 


49.49 






15.65 


51.48 






17.60 


53.48 






19.60 


55.50 






21.68 


57.48 






23.60 


59.42 






25.44 



Mean 10 38 30.47 
Chr.slow +1 49.97 



10 41 

+1 



56.61 
49.97 



Correct 10 40 20.44 
St. Louis 11 19 32. 51 



10 43 46.58 

11 22 58.47 



Mean 39-" IP. 98, St. Louis to Red River, 



Diff. 39 12.07 

April 4, 1902. 



11.! 



APRIL 6, 1902, MACCONNEL, ST. LOUIS. 

Levels. 
CLAMP EAST. 







9k 


Om 






lOk 50" 




w. 






E. 


w. 


E. 


Dir. 


9.0 






6.3 


9.8 


6.0 


Rev. 


5.4 






10.2 


4.2 


11.2 


Rev. 


5.5 






10.0 


4.0 


11.4 


Dir. 


10.4 






5.0 


9.3 


6.2 


Sum. 


30.3 






3L5 


27.3 


34.8 


Diff. 


- 


-1 


2 






-7.5 


'J- 







15 






0.94 




0^ 136 






0'. 136 


b 




-0 


02 

30n> 


CLAMP WEST. 




-0.13 




w. 






E. 


w. 


E. 


Dir. 


8.5 






7.2 


10.1 


6.2 


Rev. 


4.9 






10.8 


6.9 


9.7 


Rev. 


5.2 






10.6 


6.8 


9.8 


Dir. 


8.1 






7.7 


10.4 


6.3 


Sum. 


26.7 






36.3 


34.2 


32.0 


Diff. 


- 


-9 


6 






+2.2 


Vs 




1 


20 






0.28 


d 




0^ 


136 






0^ 136 


b 




-0 


16 






+0.04 



94 



THE ONE HUNDREDTH MERIDIAN. 



Star 
Factors 



1 
2 

4 

5 
« 

7 

Mean 
Rate 
Aber. 
6B 



RA 

1st Ap].. 
cC 

Cor.H r,A 
ffA 

Slow 

Star 

Star 

Factors 



APRIL 6, 1902, MACCONNEL, ST. LOUIS— Continued. 

Clamp East. 
1 Draconis, <S=81° 46' 
Lost, clouds. 



Slow 



jii Leonis, 5=26° 25^ lost, clouds. 

/JLeo. Min., 5=37° 13' 

A=+0.02 a=-.28 
B=+].25 6=-. 08 
C=+1.25 c = -.29 

Chron. T. 

h. m. s. 

10 20 38. 

43.7 

49.4 

54.9 

21 0.5 

6.1 

11.8 



Mean 
Rate 
Aber. 
bB 


10 20 


54.91 
+.09 
-.02 
-.10 


RA 


10 20 
10 22 


54.88 
15.59 


1st App. 
cG 


+1 


20.71 
-.36 


Cor.+aA 
aA 


1 


21.07 
-.01 



£ Leonis 


5=24° 14' 




A=+0.27 


a=-.28 




B=+l 


.06 


b=-.03 




C=+l 


.09 


c=-.29 




Chron 


T. 




h. 


m. 


s. h. m. 


s. 


9 


38 


44. 1=9 38 


58.9 






49.0= 


58.8 






54.1= 


58.9 






Lost. 






39 


3.9= 


58.8 






8.7= 


58.7 






Lost. 




9 


38 


58.82 
+.19 
-.02 
-.03 





9 38 
9 40 


58.96 
19.63 


+1 


20.67 
-.32 


1 


20.99 
-.08 



1 


21.07 


a Leonis, 


5=12° 27', lost, clouds 


46 Leo. Mir 


., 5=34° 44' 


A=+0.08 


i,=-.28 


B=+1.21 


j = -.13 


C=+1.22 


" = -.29 


Chron. T. 


h. m. 


s. 


10 46 


15.5 




2L1 




26.4 




3L8 




37.3 




42.8 




48.1 


10 46 


31.86 




+.03 




-.02 




-.16 



10 46 
10 47 


31.71 
52.46 


+1 


20.75 
-.36 


1 


2L11 
-.02 



1 21. 08 



1 21.13 



THP: one HUNDKEDTII MERIDIAN. 



95 



RA 

1st App. 

cC 

Cor.+aA 
aA 

Slow 



APRIL 6, 1902, MACCONNEL, ST. LOUIS— Continued. 
Clamp West. 

4 Draconis, 5=78° 10' 



A=-3. n a = -.28 
B=+3. 76 6=-. 09 
C =+4.88 c=+.29 



Star 


/3 Leonis, 


s= 


-15° 7' 


Factors 


A 


=+0.41 


a=-.28 




B 


=+0.95 


b=-.12 




C 


=+1 


.04 


c=+.29 


Wires. 




Chron. 


r. 






h. 


m. 


s. 


1 




11 


42 


31.5 


2 








36.0 


3 








40.6 


4 








45.3 


5 








49.8 


6 








54.4 


7 








59.3 


Mean 


11 


42 


45.27 


Rate 








-.11 


Aber. 








.02 


6B 








-.11 



11 42 
11 44 


45.03 
6.19 


+1 


21.16 
+.30 


1 


20.96 
-.12 



Chron. T. 



13.3 
35.8 

57.3 
19.0 
40.4 
2.2 
24.6 



12 6 


18.94 
-.16 
-.07 
-. 34 


12 6 

12 7 


18. 37 

41.78 


+1 


23.41 

+ 1.41 



1 22. 00 



1 21. 08 



Star 
Factors 



1 
2 
3 
4 

5 
6 

7 

Mean 
Rate 
Aber. 
6B 



RA 

1st App. 
cC 

Cor.+aA 
aA 

Slow 



/i Can. Ven., 5=41° 53' 



«Can. Ven., (5=38° 51' 



A=-0.07 a: 
B=+1.34 b-- 

0=+l. 35 C-- 

Chron. T. 
li. m. s. 
12 27 28. 8 
34.9 
40.4 
46.7 
52.5 
58.8 
4.9 



:-.28 
:-.06 
: + .29 



28 



12 27 46.74 
-.23 
-.02 



12 27 46. 41 
12 29 8. 03 

+1 21.62 
+.39 

1 21.23 

+.02 



A=-0.02 


a= — 


28 


B=+l 


29 


6= — 


03 


C=+l 


29 

'hroi 


c= + 
. T. 


29 


h. 


111. 


s. 




12 


49 


50.8 
56.3 






50 


2.1 

8.3 
13.7 
19.4 
25.3 




12 


50 


7.99 
-.27 
-.02 
-.04 




12 


50 


7.66 




12 


51 


29.20 






+1 


21. 54 

+.38 






1 


21.16 
+.01 





1 21.21 



1 21. 15 



96 



THE ONE HUNDREDTH MERIDIAN. 



APRIL 6, 1902, MACCONNEIi, ST. LOUIS— Continued. 



Star 
Factors 



1 
2 
3 
4 
5 
6 
7 

Mean 
Rate 
Aber. 
bB 



RA 

1st App. 
cC 

Cor.+oA 
aA 



E Virginis, 5 = 11° 29^ 

A=+0.46 «=-.28 
B=+0.91 b= .00 
C=+1.02 c=+.29 



20 Can. Yen., 5=41° 5' 



Chron 


. T. 


h. m. 


s. 


12 55 


45.9 




50.6 




54.9 




59.6 


56 


4.2 




8.7 




13.2 


12 55 


59.59 




-.30 




-.02 




-.00 



A=-0.06 a=-.28 


B=+l 


.32 6=+. 03 


C=+l 


.32 c=+.29 


Chron. T. 


h. 


m. s. 


13 


11 32. 3 




38.5 




44.4 




50.3 




56.1 




12 2.4 




8.2 


13 


11 50.31 




-.33 




-.02 




+.04 



12 55 
12 57 


59.27 
20.46 


+1 


21.19 
+.30 


1 


20.89 
-.13 



13 11 
13 13 


50.00 
11.51 


+1 


21.51 
+.39 


1 


21.12 
+.02 



Slow 


1 21.02 






1 21. 10 








Comjmtations. 










Clamp East. 


"c" 




Clamp West. 




Star. 


1st App. 
m. s. 


C. Star. 




1st App. 
m. s. 


C. 


£ Leo. 


+1 20.67 


+ 1.09 


^Leo. 




+ 1 21. 16 


fl.04 


/?L. M. 


.71 


1.25 


/JC. V. 




.62 


1.35 


46 L. M. 


.75 


1.22 


a C. V. 
s Vir. 
20 C. V. 

Mean 




.54 
.19 
.51 


1.29 
1.02 
1.32 


Mean 


+1 20.71 


+1.19 


+1 21. 40 


+1.24 






(l-20^71)-(l°>2P 


40) 










*^- 1.19 


+ 1.24 









Cor. +aA 



c=— 0.29 Clamp East. 
c=+0. 29 Clamp West. 



£ Leo. 
^L. M. 
46 L. M. 
/i Leo. 
/i C. V. 
«C. V. 
£ Vir. 
20 C. V. 

Mean 

4 Drac. 

Diff. 



+1 



20.99 
21.07 
21.11 
20.96 
21.23 
2L16 
20.89 
21.12 



+1 21.07 

+1 22. 00 



-0.93 



+0.27 
+0.02 
+0.08 
+0.41 
-0.07 
-0.02 
+0.46 
-0.06 

+0.14 

-3.11 

+3.25 



3.25 

-0.28 



THE ONE HUNDREDTH MERIDIAN. 



97 



APRIL 6, 1902, MACCONNEL, ST. LOUIS— Continued. 
( 'hronometer correctioHs. 



e Leonis slow +1 


21 . 07 


/3 Leo. Min. slow 


.08 


46 Leo. Min. slow 


.IS 


/3 Leonis slow 


.08 


/S Can. Yen. slow 


.21 


a Can. Ven. slow 


.15 


e Virginis slow 


.02 


20 Can. Ven. slow 


.10 



Mean slow 1 21, 11 Epocrh of exchange. 
Exchange signals received at Sf. Louis. 



■rom Red River. 


From St. 


Louis. 




From Red River. 


From St. 


Louis. 


h. m. 


s. 


h. 


m. 


s. 




h. 


m. 


s. 


h. 


m. 


s. 


11 5 


40.90 
42.90 
44.88 
46.90 
48.90 
50. 90 
52.98 
54.91 
56.90 
58. 98 


11 


10 


0.85 

2.90 

5.08 

7.18 

9.10 

11.08 

13.00 

15.00 

16.92 

19.00 




11 


6 


16.90 
18.94 
20.94 
22.96 
24.94 
26.98 
28.95 
30. 94 
32. 85 
34.91 


11 


10 


37. 06 
39.09 
41.11 
43.10 
45.20 
47.20 
49.20 
51.18 
53.00 
54.95 


6 


0.93 

2.87 
5.08 






21. 10 

22.98 
25.08 








36.90 

38. 80 






56.80 
59. 00 


















6.90 






26.99 


Mean 


11 


6 


9.92 


11 


10 


30.04 




8.90 






29.00 


Chr. slow 


- 


-1 


21.11 




+ 1 


21.11 




10.90 






31. 00 
































12.91 






33. 00 


Correct 


11 


7 


31.03 


11 


11 


5L15 




14.90 






.'~)4. 98 

















APRIL 6, 1902, KIDDER, RED RIVER. 

Levels. 







(^LAMP WEST. 

91, 0." 




Oh 45m 




Dir. 


Rev. 




Dir. 


ReV/ 


w 

E 


49.2 
15.3 


.13.5 

47.8 




51.5 
16.3 


12.5 
48.0 


W 

E 


50.7 
16.0 


12.6 
47.0 




51.6 
16.1 


12.5 

48.0 


Sum 
Diff. 

M 
1, 


131.2 


120.9 

rlO.3 
1.29 
Q\ 111 

f- 0.14 

11)' SO"' 


LAMP EAST. 


135. 5 


121.0 

+ 14.5 
1.81 
0^ 111 

+ 0.20 

181' 5- 




Dir. 


Rev. 




Dir. 


Rev. 


E 


50. S 
14.9 


12.6 
48. 8 




51.7 
14.5 


11.3 

48.5 


W 
E 


51.4 
15.0 


12.5 
48.8 




53.0 
16.5 


10.4 
47.6 


Sum 
Diff. 

1/ 

:r 
h 


132. 1 


122.7 
+9.4 

1.18 

OMll 
+0.13 




135. 7 


117.8 

rl7.9 
2.24 
0^ 111 

+ 0. 25 


H. E 


>oo. 375- 


7 


* 







98 



THE ONE HUNDKEDTH 

APRIL 6, 1902, KIDDER, RED 

Clamj} West. 

1 Draconis, 5=81° 46^ 

A = -5. 13 a =+.56 
B=+4. 73 h=+. 14 
C=+6.98 (-=+.30 

Chron. T. 

h. m. s. h. m. s. 

9 16 20.8 =9 21 27.4 

18 55.0 = 28.0 

21 25.0 = 26.8 

Lost 

26 32.2 = 26.4 



9 21 


27.15 
-.15 

+.67 


9 21 
9 23 


27.67 
15. 38 


+ 1 


47.71 
+2.11 



1 45. 60 



// Leonis, <5=26° 28^ 



A=+0. 16 


a= + 


56 


B=+l. 10 


6= + 


16 


C=+l.ll 


0=-^ 


30 


Chron 


T. 




h. m. 


s. 




9 44 


35.4 




45 


0.3 
24.3 

49.7 




46 


13.6 





9 


45 


24.66 
-.02 

+.18 


9 
9 


45 

47 


24.82 
13.73 




+1 


48.91 
+.33 




1 


48.58 
+.09 



MEKIDIAN. 

RIVER— Continued. 



e Leonis, 5=24° 14' 



A=^0.20 


a = -t- 


56 


B =+1.09 


b= + 


15 


C = + 1.10 


c=+ 


30 


Chroi 


. T. 




h. m. 


s. 




9 37 


42.2 




38 


6.5 
30.3 
54.9 




39 


18.3 





9 


38 


30.44 
-.02 

+ .16 


9 
9 


38 
40 


30.58 
19.63 




+ 1 


49.05 
+ .33 




1 


48.72 
+ .11 







1 


48.61 




a 


Leonis, 5 = 12° 


27' 


A 


=+0.38 


a= + 


56 


B 


= + 1 


03 


b= + 


17 


C 


=+1 


04 


c= + 


30 




Chron. T. 






h. 


m. 


s. 






10 



1 
2 


37.3 
59.8 
22.1 
45.1 
7.2 





10 1 


22.30 
-.02 

+.18 


10 1 
10 3 


22.46 
11.48 


+1 


49.02 
+.31 


1 


48.71 
+.21 



1 48. ■ 



1 48.50 



THE ONE HUNDREDTH MERIDIAN. 

APRIL 6, 1902, KIDDER, RED RIVER— Continued. 

X U. M., <5=43° 24^ /i L. M., 5=37° 13' 41 L. M., 5=23° 42' 



99 



A = 


= -0.22 


a= + 


56 


A 


= -0.06 


o= + 


56 


A=+0. 19 


= 


+. 


56 


R= 


=+1.36 


b= + 


18 


B 


= + 1.25 


6= + 


19 


B= + 1.08 


6= 


+• 


20 


C= 


=+1.38 


c= + 


30 


C 


=+1.25 


c= + 


30 


C=+1.09 


c= 


+ 


30 




Chror 


. T. 






Chron 


. T. 




Chron 


T. 








h. m. 


s. 






h. m. 


s. 




h. m. 


s. 








10 8 


24.7 
54.6 






10 19 


31.3 
59.2 




10 35 


30.5 
54.7 








9 


24.7 
55.3 






20 


26.1 
54.6 




36 


18.3 
42.7 








10 


25.4 






21 


21.6 




37 


6.4 







10 


9 


24.94 
-.02 

+ .24 


10 
10 


9 
11 


25.16 

13.88 




+1 


48. 72 

+.42 




1 


48.30 
-.12 



1 48. 42 



/? Leonis, 5 = 15° 07' 

A=+0.34 o=+.55 
B =+0.98 6 =+. 15 
C = + 1.04 c = — . 30 



10 20 26.56 
-.02 

+.24 

10 20 26.78 
10 22 15.59 



+ 1 



48.81 
+ .38 



48.43 
-.03 



10 36 


18.52 
-.02 

+.22 


10 36 
10 38 


18.72 
7.73 


+ 1 


49.01 
+ .33 


1 


48.68 
+.11 



1 48. 46 
Clamp East. 



1 48. 57 



4 Draconis, 5=78° 10' 



A=-3.37 a-. 
B=+3.53 b= 

C=+4. 88 c- 



:+.55 
: + .17 
:-.30 





Chron. T. 


h. 


m. 


s. 


11 


41 


32.6 
54.4 




42 


17.4 
40.1 




43 


3.2 



11 


42 


17 


54 






_ 


02 






+ 


15 


11 


42 


17.67 


11 


44 


6 


19 




H 


48 


52 






— 


31 




1 


48.83 






+ 


19 



2 22.5 

4 7.5 

5 57.7 
7 43.1 
9 29.7 



12 5 


56.10 
-.09 
+.60 


12 5 

12 7 


56.61 

41.78 


+1 


45.17 
-1.48 



1 46. 65 



1 48. 64 



100 



THE ONE HUNDREDTH MERIDIAN. 



APRIL 6, 1902, KIDDER, RED RIVER— Continued. 
/S Can. Ven., 5=41° 53^ a Can. Yen., (5=38° 51' 



A=-0.17 <c-. 
B=+1.32 b-- 
C=+1.34 '-- 

Chron.T. 



: I .55 
:+.19 
:-.30 



26 20.8 
50.1 

27 20.2 
49.3 

28 18. 8 



12 


27 


19.84 
-.02 
+ .25 


12 
12 


27 
29 


20.07 
8.03 




+1 


47.98 
-.40 




1 


48.38 
-.09 



12 


55 


31 


84 






^- 


02 






^- 


25 


12 


55 


32 


07 


12 


57 


20.46 




•fl 


48. 39 






— 


31 




1 


48 


70 






- 


22 



A=-0.10 (( =+.55 
B=+1.28 h^+.21 
C=+1.29 r=-.30 





Chron.T. 


ll. 


m. 


s. 


12 


48 


44.6 




49 


12.2 
41.2 




50 


9.1 
37.3 


12 


49 


40.88 
-.02 

+.27 


12 


49 


41.13 


12 


51 


29.20 




+1 


48.07 
-.39 




1 


48.46 
-.05 



1 48. 47 






1 48.51 


« Virginis, 5 = 11° 29' 




20 Can. Ven., 5=41° 5' 


A=+0.40 «= + 
B=+0.94 i= + 
C=+1.02 €=- 


55 
23 
30 


A= 
B. 
C= 


=-0.16 a=-^.55 
=+1.32 ft=+.25 
= + 1.32 r"=-.30 


Chron. T. 






Chron.T. 


h. m. s. 






h. m. s. 


12 54 47.3 

55 9. 
32. 2 
54.1 

56 16. 6 






13 10 25.2 
53.8 

11 23. 4 
52.3 

12 21.5 



13 


11 


23.24 
-.02 
+ .33 


13 
13 


11 
13 


23. 55 
11.51 




+ 1 


47.96 
-.40 




1 


48. 36 
-.09 



1 48.48 



1 48. 45 



THE ONE HUNDREDTH MERIDIAN. 

APBIIi 6, 1902, KIDDER, RED RIVER— Continued. 

CompiiUttlons. 



101 





Clamp West. 








Clamp East. 




star. 


1st App. 


' C. 


star. 




1st App. 


C. 




m. 


s. 








111. s. 




e Leo. 


+ 1 


49.05 


+1.10 


fi Leo. 




+ 1 48.52 


+1.04 


^ Leo. 




48.91 


1.11 


/iC.V. 




47.98 


1.34 


a Leo. 




49.02 


1.04 


a C. V. 




48.07 


1.29 


A U. M. 




48.72 


1.38 


e Vir. 




48.39 


1.02 


/i L. M. 




48.81 


1.25 


20 C. V. 
Mean 




47.96 


1.32 


Mean 


1 


48. 90 


1.18 


1 48. IS 


L20 








(1»'48^ 


90)"(1'»48 


M8) 












'~ 1.18 -f 1. 


20 







p=+0. 30 Clamp West. 
(.= —0.30 Clamp East. 



Clamp West. 
Cor. a A 



Clamp East. 
Cor. oA. 



£ Leo. 
/M Leo. 
a Leo. 
AU. M. 
fi L. M. 

Mean 

1 Drac. 

Diff. 



+1 48. 72 
.58 
.71 
.30 
.43 

+1 48.55 

1 45.60 



+0. 20 
+0.16 
+0.38 
-0.22 
-0.06 

+0.09 

-5. 13 



+2.95 +5.22 
+2.95 



fJ Leo. 
^ C. V. 
aC. V. 
£ Vir. 
20 C. V. 

Mean 

4 Drac. 

Diff. 



+1 48.83 
.38 
.46 
.70 



+1 48. 54 
1 46. a5 

+1.89 



+0.34 
—0.17 
—0.10 
+0.40 
-0.16 

+0.06 

-3.37 

+3. 43 



«- 5.22 






3. 43 


a=+0. 56 






fl=+0.55 


Chronometer corrections. 




e Leonis slow 


m. 

1 


s. 
48.61 




M Leonis slow 




.49 




a Leonis slow 




.50 




A Ursae Maj. slow 




.42 




/S Leo. Min. slow 




.46 




41 Leo. Min. slow 




.57 




fi Leonis slow 




.64 




fi Can. Ven. slow 




.47 




a Can. Ven. slow 




.51 




£ Virginia slow 




.48 




20 Can. Ven. slow 




.45 




Mean slow 


1 


48. 51 At 


exchange. 



102 



THE ONE HUNDREDTH MERIDIAN. 



APRIL 6, 1902, KIDDER, RED RIVER— Con tinned. 
Exchange signals received at Red River. 



From Red River. 


From St. 


Louis. 


h. m. s. 


h. 


m. 


s. 


10 26 1.46 


10 


30 


21. 53 


3.50 






23.58 


5.44 






25.70 


7.49 






27.84 


9.45 






29.78 


11.46 






31.75 


13.52 






33.70 


15.48 






35.65 


17.47 






37.60 


19.50 






39.67 


21.48 






41.75 


23. 45 






43.62 


25.48 






45.72 


27.45 






47.63 


29.45 






49.68 


31. 45 






51.67 


33.50 






53.65 


35.48 






55.63 


37.48 






57.78 



rom 


Red 


River. 


From St. 


Loiiis. 


h. 


m. 


s. 


h. 


m. 


s. 


10 


26 


39.49 


10 


30 


59. 7.S 






41.48 




31 


1..S0 






43.50 






3. NO 






45.50 






5. DO , 






47.52 






7.90 






49.50 






9.90 






51.50 






11.83 






53.50 






13.70 






55.50 






15.62 






57.48 






17.50 






59.34 






19.70 



Mean 10 26 30.48 
Chr.slow + 1 48.51 



Correct 10 28 18.99 
St. Louis 11 7 31.03 



Diff. c 

Mean 39"" 11'. 985, St. Louis to Red River, April 6, 1902. 



12.04 



10 


30 

^ 1 


50.71 
48.51 


10 

11 


32 
11 


39.22 
51.15 



39 11. 93 



APRIL 7, 1902, MACCONNEL, ST. LOUIS. 

Levels. 

CLAMP WEST. 

gh 9m 1 





w. 




E. 


W. 


E. 


Dir. 


9.5 




9.8 


9.0 


10.9 


Rev. 


9.4 




9.9 


10.4 


9.8 


Rev. 


10.2 




9.0 


11.4 


8.9 


Dir. 


9.5 




8.7 


7.6 


12.9 


Sum 


38.6 




37.4 


38.4 


42.5 


Difi. 




+L2 






-4.1 


Va 




0.15 






0.51 


d 




C.136 




0". 136 


b 




+0.02 

llh SO-" 


CLAMP EAST. 




-0.07 

ISh 15" 




w. 




E. 


w. 


E. 


Dir. 


8.7 




12.2 


7.4 


14.9 


Rev. 


12.5 




9.0 


13.8 


8.7 


Rev. 


12.5 




9.0 


14.1 


8.2 


Dir. 


7.7 




13.9 


8.7 


13.8 


Sum 


41.4 




44.1 


44.0 


45.6 


Diff. 




-2.7 






-L6 


Vs 




0.34 






0.2 


d 




0^ 136 




0^ 136 


b 




-0.06 






-0.03 



star 
Factors 

Wires. 



THE ONE HUNDREDTH MERIDIAN. 

APRIL 7, 1902, MACCONNEL, ST. LOUIS— Continued. 

Clamp West. 

e Leonid '5=24° IV 



103 



1 Draconis, 5=81° 46^ 



A=— 4. 77 
B=+5.09 

C=+6.98 



Cor. +aA 
aA 



1st App. 
rC 

Cor.+aA 
aA 



.-.27 

. + .02 
r4-.29 



Chron. T. 
m. s 

20 



20.7 
51.6 
23.6 
54.4 
26.3 
56.2 
28.0 



9 21 54.40 

+ .24 
-.11 
+.10 



9 21 54.63 
9 23 15. 26 

+1 20. 63 
+2.06 

1 18.57 



n Leonis, 5=26° 25' 

A=+0.23 o = -.27 
B=+1.09 fe=-.01 
C=+l.ll c =+.29 

Chron. T. 

h. m. s. 

9 45 40.9 

46.0 

51.3 

56.1 

46 1.3 

6.1 

11.1 



9 45 


56.11 
+.18 
-.02 
—.01 


9 45 
9 47 


56.26 
13.72 


+1 


17.46 
+ .33 


1 


17.13 
-.06 



A = + .27 a 
B=+1.06 b- 
C =+1.09 c 

Chron. T. 



-.27 
-.01 
-.29 



39 



46.8 
52.4 
57.0 

1.8 
6.9 
11.5 
16.8 



9 39 


1.89 
+ .19 
-.02 
+ .01 


9 39 
9 40 


2.07 
19.62 


-^l 


17.55 

+.32 


1 


17.23 
-.07 



1 17. 30 
a Leonis, 5=12° 27' 

A=+0.45 a=-.27 
B=+0.92 fe=-.03 
C=+1.03 c=+.29 

Chron. T. 



h. 


m. 


s. 


10 


1 


40.0 

44.7 
49.2 
53.7 

58.5 




2 


3.0 
7.9 


10 


1 


53.86 
+.15 



1 17.19 



-.03 

10 1 53. 96 
10 3 11.47 

-^1 17.51 
+ .30 

] 17.21 
-.12 

1 17.33 



104 



THE ONE HUNDREDTH MERIDIAN. 



Star 



APRIL 7, 1902, MACCONNEL, ST. LOUIS— Continued. 

A Ursae Maj., 5=4S° 24' fi Leo. Min., 5=37° 1:^ 

A=+0.02 a=— .27 
B=+1.25 6=-. 07 
C=+1.25 c=+.29 



10 20 41. 2 

46.8 

52.1 

58.2 

3.4 



Factors 


A=-0. 12 


a=— . 


27 




B=-fl.37 


?>=— . 


05 




C=+1.38 


c =+. 


29 


Wires. 


Chron. T. 






1.. m. 


s. 




1 


10 9 


37.5 




2 




43.9 




3 




49.9 




4 




56.0 




5 


10 


2.0 




6 




8.8 




7 




14.6 




Mean 


10 9 


56.10 




Rate 




+.12 




Aber. 




-.02 




6B 




-.07 






10 9 


56.13 




RA 


10 11 


13.87 




1st App. 


+1 


17.74 




cC 




+ .41 




Cor.+aA 


1 


17.33 




ak 




+ .03 




Slow 


1 


17.30 




Star 


/? Leonis, 


5=15° 


V 


Factors 


A=+0.41 


a=- 


45 



Mean 
Rate 
Aber. 
6B 



RA 

1st App. 

cC 

Cor. -f-aA 
aA 

Slow 



B=+0.95 fe=-.05 
C=+1.04 c=-.29 

Chron. T. 

h. m. s. 

11 42 35.4 

40.5 

44.7 

49.5 

54.3 

58.7 

43 3.4 

11 42 49.50 
-.11 





-.05 


11 42 
11 44 


49.32 
6.19 


+1 


16.87 
-.31 


1 


17.18 
-.18 





15.0 


10 20 


58.00 
+ .09 
-.02 
-.09 


10 20 
10 22 


57.98 
15.58 


+ 1 


17.60 

+ .37 


1 


17.23 
-.00 



1 17. 23 



Clamp East. 



4 Draconis, 



=78° lO' 



A=-3 


11 


a=— . 45 


B=+3.76 


6=-. 05 


C =+4. 88 


c=-.-29 


Chron. T. 


h. 


m. 


8. 


12 


5 


19.9 
41.1 




6 


3.7 
24.6 

47.7 




/ 


8.0 
30.4 


12 


6 


24.91 
-.16 
-.07 
—.19 


12 


6 


24.49 


12 


7 


41.75 


+1 


17.26 






-1.44 



1 18.70 



1 17. 36 



THE ONE HUNDREDTH MERIDIAN. 



105 



APRIL 7, 1902, MACCONNEL, 

Star /iCan. Ven., 5=41° 53' 

Factors i A = — 0. 07 (r =— .45 

B=+1.34 b = -.Oi 

I C= + 1.35 r=-.29 

Wires. Chron. T. 

h. m. 8. 
12 27 33. 2 
39.5 
45.6 
51.9 
57.5 
28 3. 6 
9.4 



12 27 51.53 
-.23 
-.02 
-.05 



12 27 
12 29 


51.23 

8.03 


+ 1 


16.80 
-.40 


1 


17.20 
+ .03 



1 17.17 



£ Virginis, 5=11° 29' 



A =+0.46 


a = — 


45 


B=+0.91 


h= — 


03 


C=H 1.02 


r=- 


29 


Chron. 


T. 




h. m. 


s. 




12 55 


50.4 

54.8 
59.7 




56 


4.2 

8.7 
13.3 

17.8 




12 56 


4.13 
-.30 
-.02 
-.03 




12 56 


3.78 




12 57 


20.46 




+ 1 


16.68 
-.30 




1 


16.98 
-.21 





ST. liOUIS— Continued. 

«Can. Ven., 5=38° 51' 

A=— 0.02 a=-.45 
B=+1.29 ?>=-.04 
C=+1.29 (=-.29 



12 50 



Lost. 

1.2 

7.0 
12.2 
18.6 
24.2 

Lost. 



12 50 12.64 
-.27 
-.02 
-.05 

12 50 12.30 
12 51 29.21 

+1 16.91 
-.38 



17.29 
+.01 



1 17. 28 
20 Can. Ven., 5=41° 5' 



A =-0.06 


a=-.45 


B=+l 


32 


ft=-.03 


C=+l 


.32 


c=-.29 




Chron. T. 


h. 


m. 


s. 
Lost. 


13 


11 


43.1 

48.3 
54.9 




12 


1.2 

6.8 
Lost. 


13 


11 


54.86 
-.33 
-.02 
-.04 



13 11 
13 13 


54.47 
11.51 


+1 


17.04 
-.39 


1 


17.43 
+ .03 



1 17. 19 



1 17.40 



106 THE ONE HUNDEEDTH MERIDIAN. 

AFBIIi 7, 1902, MACCONNEL, ST. LOUIS— Continued. 

Computations. 



Star. 


Clamp W. 

1st App. 


C. 


star. 


Clamp E. 
1st App. 


C. 


£ Leo. 
u Leo. 
a Leo. 
AU. M. 
/i L. M. 


+ 1 


17.55 
.46 
.51 
.74 
.60 


+1.09 
1.11 
1.03 
1.38 
1.25 


/i Leo. 
/J C. V. 
aC. V. 
f Vir. 
20C.V. 

Mean 


+ 1 


16.87 
16.80 
16.91 
16.68 
17.04 


+ 1.04 
1.35 
1.29 
1.02 
1.32 


Mean 


1 


17. 57 


1.17 


1 


16.86 


1.24 








(I'M 7^57 
~ L17 


)-(l'" 16^86) 
+ 1.24 














c=+0. 29 
c=-0.29 


Clamp W. 
Clamp E. 








star. 


"a" 

Clamp West. 

Cor. +aA 


A 


Star. 


"o" 

Clamp East. 

Co. 4-aA 


A 




m. 


s. 






m. 


s. 




£ Leo. 
/ii Leo. 
a Leo. 
AU. M. 
/JL. M. 


4-1 


17.23 
.13 
.21 
.33 
r23 


+0.27 
+0.23 
+0.45 
-0.12 
+0.02 


/J Leo. 
/3C. V. 
aC. V. 
£ Vir. 
20 C. V. 

Mean 


+ 1 


17.18 
17.20 
17.29 
16.98 
17.43 


+0.41 
-0.07 

-o.oa 

+0.46 
-0.06 


Mean 


+1 


17.23 


+0.17 


+ 1 


17.22 


+0.14 


iDrac. 


1 


18.57 


-4.77 


4 Drac. 
Diff. 


1 


18.70 


-3.11 


Diff. 




-L34 


+4.94 




-1. 48 


+3.25 






a=- 


1.34 
4.94 






a= — 


L48 
3.25 






a=- 


■0.27 






a=— 


0.45 



Chronometer corrections. 



£ Leonis slow 


1 17.30 


M Leonis slow 


.19 


a Leonis slow 


.33 


A Ursse Maj. slow 


.30 


/J Leo. Min. slow 


.23 


fi Leonis slow 


.36 


f3 Can. Ven. slow 


.17 


a Can. Ven. slow 


.28 


£ Virginis slow 


.19 


20 Can. Ven. slow 


.40 


Mean slow 


1 17.28 



1 17. 28 Epoch of exchange. 



THE ONE HUNDREDTH MERIDIAN. 
APRIL 7, 1902, MACCONNEL, ST. LOUIS— (ontinued. 

Exchange signah received at St. Lonlx. 



107 



From Red River. 


From St 


Louis. 


h. ra. 


s. 


h. m. 


s. 


11 2 


44.96 


11 4 


15.20 




46.90 




16.90 




48.92 




18.85 




50.90 




20.96 




52.90 




23.00 




54.92 




25.02 




56.99 




26.91 




58.90 




28.90 


3 


0.90 




30.85 




2.93 




32.87 




4.92 




34.82 




7.00 




36.80 




8.93 




38.70 




10.95 




40.72 




12.94 




42.80 




14.93 




44.92 




16.95 




46.98 



From Red River. 


From St 


. Louis. 


h. m. s. 


h. 


m. 


•«• 


11 3 20.90 


11 


4 


50.85 


22.99 






52.90 


24.97 






54.90 


26.98 






56.97 


28.98 






58.98 


30.96 




5 


1.06 


32.99 






3.10 


35.00 






5.00 


36.90 






6.98 


38.90 






8.90 


40.93 






11.00 


42.80 






12.94 



Mean 11 
Chr. slow 



3 13. 
-1 17. 



Correct 11 4 31.22 



11 4 43.89 

+ 1 17.28 



1.17 



18. 95 



48. 85 



APRIL 7, 1902, KIDDER, RED RIVER. 

LeveU. 







CLAMP WEST. 








9h 5m 

Dir. 


Rev. 


Dir. 


30" 

Rev. 


w. 

E. 


49.2 
16.7 


14.2 
46.8 


50.1 
16.2 


13.7 

47.7 


E. 


50.0 
17.0 


14.2 
46.9 


50.8 
16.7 


13.3 
47.3 


Sum 


132.9 


122.1 


133.8 


122.0 


Diff. 

6 


+10.8 
1.35 




+ li.O 

1.47 


o^ 111 

+ 0.15 


0». Ill 
+ 0.16 






CLAMP EAST. 








lib 30"> 
Dir. 


Rev. 


13 
Dir. 


15" 

Rev. 


W. 


50.4 
16.0 


13.6 
48.0 


51.4 
16.4 


11.8 
46.9 


w. 

E. 


50.0 
15.4 


13.2 
47.7 


49.8 
14.3 


12.6 
47.9 


Sum 


131.8 


122.5 


131.9 


119.2 


Diff. 


+9.3 
1.16 

o^ 111 


+ iZ. / 

1.59 
Q\ 111 


h 


+0.13 




+ 0.18 



108 



THD ONE HUNDKEDTH MERIDIAN. 



APRIL 7, 1902, KIDDER, RED RIVER-Continued. 
Clamp West. 



Star 


£ Hydrse, 5=6° 47 


' 


I LTrsse Maj., 5=48° 26^ 




1 Drac, 5=81° 46' 


Factors 


A=+0.45 a=+ 
B=+0.90 6= + 
C = +1.01 =+. 


28 
11 
39 


A= 
B. 


=-0.36 o=+.28 
=+1.47 6 =+. 13 
=+1.50 c =+.39 


A 
B 

c 


= -5.13 o =+.28 
= +4.73 6 =+. 15 
=+6.98 r = +..39 


Wires. 


Chron. T. 
h. m. s. 






Chron. T. 
h. m. s. 




Chron. T. 
h. m. s. 


1 
2 
3 
4 
5 


8 39 3.6 

25.9 

47.5 

40 10. 3 

31.9 






8 49 37.5 

50 10. 
42.6 

51 16.6 
49.1 




9 16 18.4 
18 52.3 
21 22.7 
24 59.9 
26 30.4 



Mean 
Aber. 
6B 



RA 

Ist App. 
cC 

Cor.+aA 
aA 

Slow- 
Star 
Factors 



Aber. 
6B 



RA 

1st App. 

cC 

Cor.+aA 
aA 



8 39 


47.84 
-.02 
+.10 


8 39 
8 41 


47.92 
37.13 


+ 1 


49.21 
+.39 


1 


48.82 
+.13 



1 48. 



E Leonis, 5=24° 14' 



Slow 



A=+0.20 a=+.28 
B=+1.09 6=+. 15 
C=: + l. 10 c=+.39 

Chron. T. 
h. m. s. 
9 37 42.0 

38 6.2 
30.0 
54.8 

39 18.1 


9 


38 30.22 
—.02 
+.16 


9 
9 


38 30.36 
40 19.62 


+ 1 49.26 

+.43 


1 48.83 
+.06 




1 48.77 



8 50 43.16 
-.03 
+.19 

8 50 43.32 
8 52 32.49 

+ 1 49.17 

+.58 



1 48. 59 
-.10 



21 24.74 
-.15 

+.71 

21 25.30 
23 15. 26 

+1 49. 96 

+2.72 

1 47. 24 



1 48. 69 



;U Leonis, 5=28° 28' 

A=+0. 16 a=+.28 
B=+1.10 6=+. 15 
C=+l.ll c=+.39 

Chron. T. 
h. m. s. 
9 44 35.4 

45 0.2 
24.2 
49.3 

46 13.4 



9 45 24.50 
-.02 
+•16 

9 45 24.64 
9 47 13.72 

+ 1 49.08 
+ .43 



1 48.65 
+.05 

1 48.60 



THE ONE HUNDREDTH MERIDIAN. 
APBIL. 7, 1902, KIDDER, RED RIVER— Continued. 



109 



a Leonis, ^ = 1: 



A- tO 


38 a =+.28 






B=+l. 


03 ^.=+.16 






C=-L1 


04 r-= + .39 






n 


mil. '1'. 






ii. 


in. s. 


h. 


111. s. 




Los-t. . 




V 


10 


59.7 = 


10 


1 22.2 




1 21.7 = 




•^2.0 




45.2 = 




22.3 




2 7.0 = 




22. 2 



10 1 


22. 18 
-.02 
-.16 


10 1 
10 3 


22.32 
11.47 


+ 1 


49. 15 
^.41 


1 


48.74 
^. 11 



/iLeo. Min., 5=37° 13^ 

A = -0.06 rt=r.28 
B=+1.25 />=+.16 
C=+1.25 c=+.39 



Chron. T. 

m. s. 
) 19 31.2 
59.0 

20 26.0 
54.3 

21 21.6 



10 20 


26.42 
-.02 
+.20 


10 20 
10 22 

+ 1 


26.60 
15.58 

48.98 
+.49 


1 


48.49 
-.02 



1 48. 63 



1 48. 51 



Clamp East. 



/iLeonis, 5=15° 



Cor. +aA 
aA 



A= 


=+0 


34 


o=-i- 


32 


B= 


=+0 


98 


b=+ 


13 


C= 


=+1.04 


c=- 


39 




Chron 


. T. 






h. 


m. 


s. 






11 


41 
42 
43 


32.1 
54.3 
17.9 
40.2 
2.9 





11 42 


17.48 
-.02 
+.13 


11 42 
11 44 


17.59 
6.19 


+ 1 


4S. 60 
-.41 


1 


49.01 
+ .11 



4 DraconLs, <5=78° lO' 

A=-3.37 «=4.32 
B=+3.53 h=+.U 
C=+4.88 e=-.39 



2 22. 1 

4 7.2 

5 57.6 

7 41.7 



9 


29.8 


12 5 


55. 68 
-.09 
+.49 


12 5 
12 7 


56. 08 
41.75 


+1 


45. 67 
-1.91 



1 47.58 



1 48. 90 



110 



THE ONE HUNDKEDTH MERIDIAN. 



APRIL 7, 1902, KIDDER, RED RIVER— Continued. 

Star /iCan. Yen., 6=41° 58' <t Can. Yen., 5=38° 51' 

Factors. A=— 0. 17 « =— .32 

B=+1.32 &=+.15 

t C=^1.34 c=-.39 



rliron 


. T. 


111. 


s. 


2 26 


20.8 




49.5 


27 


20. 3 




49.2 


28 


18.7 



12 27 


19.70 
-.02 
^.20 


12 27 
12 29 


19.88 
8.03 


- 1 


48.15 
-. 52 


1 


48.67 
.05 



f Yirginis, 5=11° 29' 



A =^0.40 


o=-r. 32 


B=+0.94 


6=+. 17 


0=^1.02 


c=-.39 


Cliron. T. 


h. m. 


s 


12 54 


47.1 


55 


9.2 




32.2 




54.3 


56 


16.9 



12 


55 


31. 94 
-.02 
^.16 


12 

12 


55 

57 


32.08 
20.46 




-^1 


48.38 
-.40 




1 


48.78 
+ .13 



A=-0. 10 


a= + 


32 


B = 4-1.28 


h= + 


16 


C =+1.29 


c=- 


39 


Chron 


T. 




h. m. 


s. 




12 48 


44.8 




49 


12.2 
41.6 




50 


9.2 
37.4 





12 


49 


41 


04 






_ 


02 






+ 


20 


12 


49 


41 


22 


12 


51 


29 


21 




— 1 


47 


99 








50 




1 


48.49 








03 



1 48. 52 
20 Can. Yen., 5=41° 5' 



1 48. 65 



A= 0.16 


«=+.32 


B = ^1.32 


b=+. 18 


C=^1.32 


c=-.39 


Chron 


T. 


h. m. 


s. 


13 10 


25.2 




54.0 


11 


24.0 




52.3 


12 


21.0 


13 11 


23. 30 




-.02 




^.24 


13 11 


23. 52 


13 13 


11.51 


+ 1 


47.99 




-.52 


1 


48.51 




-.05 


1 


48.56 



THE ONE HUNDREDTH MEEIDIAN. 
APRIIi 7, 1902, KIDDER, RED RIVER— Continued. 



Ill 



Clamp Wot. 






1st App. 


• '. 


star. 


m. s. 






+1 4V). -21 


^1.01 


fj Leo. 


49.17 


1.50 


/iC.V. 


49. 26 


1.10 


aC.Y. 


49.08 


1.11 


£ Vir. 


49.15 


1.04 


20 C. V 


48. 98 


1.25 





+1 49. 14 



Clamp East. 




1st App. 


C. 


m. s. 




+1 48.60 


-1 1.04 


48. 15 


1.34 


47.99 


1.29 


48. 38 


1.02 


47.99 


1.32 



Mean 

(1™49^._14)-^[1™48'. 22) 
"" " 1. 17 + 1.20 

c=+0. 39 Clamp West. 
c=— 0. 39 Clamp East. 



-1 48. 22 



-I 1.20 



JNIean 
1 Drac. 



Diff. 



Clamp West. 




Clamp East. 


Cor. +aX A. 


star. 


Cor. +aX A. 






m. 


s. 


m. s. 
+1 48. 82 +0. 45 


/3Leo. 


+1 


49. 01 +0. 34 


.59 -0. 36 


/?C. Y. 




48. 67 —0. 17 


83 +0. 20 


aC.Y. 




48. 49 —0. 10 


. 65 +0. 16 


£Yir. 




48. 78 -1-0. 40 


. 74 +0. 38 


20C.Y. 




48. 51 —0. 16 


. 49 -0. 06 


Mean 






+1 48. 69 +0. 13 


+1 


48.69 :-0. 06 


+1 47.24 -5.13 


4 Drac. 
Diff. 


+ 1 


47. 5,s -^-:^.. ;',7 


, +1.45 +5.26 




+1.11 h;;.43 


+1.45 






+1.11 


«.- 5. 26 






"- 3.43 


a=+0. 28 

Co 


•rections. 




«.=+0.32 




m. 


s. 




e Hydree slo 


w 1 


48. 69 




zUrsaj Maj. 


slow 


.69 




£ Leonis slo 


w 


.77 




u Leonis slo 


w 


.60 




a Leonis sic 


w 


.63 




ySLeo. Min 


slow 


.51 




/3 Leonis sic 


w 


.90 




/iCan. Yen 


. slow 


.72 




or Can. Yen 


slow 


.52 




£ Yirginis 




.65 




20 Can. Yei 


1. 


.56 





Mean 



+1 48. 66 Epoch of exchange. 



112 



THE ONE HUNDREDTH MERIDIAN. 



APRIL 7, 1902, KIDDER, RED RIVER 

KicJiaiige dc/nals received <it lied Rlt 



From Re<l River. 


From St. 


Louis 


h. m. s. 


h. 


m. 


s. 


10 2.3 1.52 


10 


24 


31. 


3. 48 






.33. 


5.49 






35, 


7.50 






37. 


9.44 






39. 


11.50 






41. 


13. 54 






43. 


15. 4G 






45. 


17.46 






47. 


19.50 






49. 


21. 50 






51. 


23.54 






53. 


25. 50 






55. 


27.50 






57. 


29.50 






,59. 


31. 49 




25 


1. 


.33. 50 






3. 


35. 50 






5. 


37. 48 






7. 



IIVER— Continued. 






Red River. 








From Red River. 


From St. 


Louis. 


h. 111. s. 


h. 


ni. 


s. 


10 23 39..52 


10 


25 


9.62 


41. 50 






11.65 


43. 52 






13. 70 


45. 52 






15. 70 


47. 50 






17.80 


49. 52 






19.82 


51.56 






21.70 


53. 46 






23. 70 


55. 48 






25. 62 


57. 50 






27.72 


59. .35 






29.70 



Mean 10 23 
Chr.slow ^1 



Diff. 



;;0. 49 
48. m 



Correct 10 
St. LouiH 11 



19.15 
31. 22 



39 12. 07 



10 


25 

+1 


0. 65 
48. 66 


10 

11 


26 
6 


49.31 
1.17 



39 11.86 



Mean 39" 



11''.965, St. Louis to Red River, Ai)ril 7, 1902. 



THE ONE-HUNDREDTH MERIDIAN. 

Sintmiary of rrsi(/fs. 



March 5,1902 

March 14, 1902 

March 16, 1902 

March 17, 1902 

March 18, 1902 

March 26, 1902 

March 30, 1902 

April 4, 1902 

April 6, 1902 

April 7, 1902 

Weighted mean 



12. 130 

n.So.T 

11.835 
12. 020 
12.025 
11. 965 
12. 020 
11.980 
11. 985 
11.965 



11. 



Ihe diHereiice iii longitude from the St. Louis observatory to the 
assumed Red River astronomical pier is therefore found to be: SO"" 

ll^as3. 

CalcKhttiun i>f the lungitude frotn (Ireen.inch,. 

h. in. s. 

Longitude of St. Louis from Greenwich (3 o 49. 168 

Longitude of Red River from St. Louis ..\\\ 39 ] L 983 

Longitude of Red River from Greenwich (j 40 1.151 

Longitude of Red River from Greenwich 6 40 1 . 15 

Longitude of Red River from Greenwich in angular measure, 100° 0' 17^^. 25. 

The longitude of the assumed Red River astronomical pier from 
Greenwich, as referred directly to the adopted longitude of the St. 
Louis observatory from Greenwich, is therefore found to be: 

100° 0' 17^^25. 



THE ONE HUNDREDTH MERIDIAN. 



113 



PROJECTION. 

In order to establish the point of intersection of the one hundredth 
meridian with the Red River it was necessary to project a true merid- 
ian north from the Red River observatory to the north bank of the 
Red River, and having thus found the point of intersection of the 
meridian whose longitude is 100° 0' 17". 25 with the Red River, a 
measurement to the east of an amount corresponding to the difference 
in longitude of 17". 25 in that latitude Avould accomplish the fixation of 
the point of intersection of the true one hundredth meridian with the 
Red River. 

As a basis for the projection of the meridian passing through the 
Red River transit 1 therefore seta stake for a meridian mark at u point 
as nearly as possible in the true meridian at a distance of 1 mile 32.155 
chains north of the Red River transit. Then to determine the azimuth 
error or ''bearing'" for said pointing, I made careful settings on the 
meridian mark with the astronomical transit, with the telescope both 
direct and reversed, on four nights before commencing the usual 
evening's programme. 

Azimuth of the meridian mark. 



1 1 March 26, 1902 . 

Do 



2 ! March 30, 1902 . 

I Do 



.! April 4,1902 
Do 



West. 
East. 



West. 
East. 



West. 
East. 



4 April 7 190'' 


.28 
.32 


West. 










Mean . . 


+0.42= +6". 3 









The bearing of the meridian mark is therefore found to be: N. 0° 
0' 6". 3 W. 

The natural tangent of 0° 0' 6". 3 with a base of 1 mile 32.155 chains 
is 0.341 links, or 0.225 feet. 

I therefore set a stake with a tack point 0.225 feet ea.st of the center 
of the meridian mark, the tack point thus being in the true meridian 
with the Red River transit, and from the latter point I projected the 
true meridian north to the north bank of the Red River on April 11, 
15. and 16, 1902. 

In the projection of the meridian I' used G. L. O. light mountain 
transit No. 7058 made by Young & Sons; sights averaging from one- 
fourth to one-half mile were made; at every instrument point I took 
two back and two fore sights, one with the telescope direct and one 
with the telescope in reversed position, ])etween which I carefull}^ 
releveled, undertaking by this procedure to eliminate all instrumental 
errors in so far as it is possible to do so; stakes were carefully set at 
every instrument point, and the mean position of the two foresights 
was considered as the correct projection. My party consisted of one 
rear flagman and one front flagman, the latter being assisted by a man 

H. Doc. 37«5 8 



114 



THE ONE HUNDKEDTH MERIDIAN. 



with field glasses, enabling- precise settings of the flag. In this man- 
ner the meridian was projected northward across Red River to a point 
due east of the old initial monument on the Texas and Oklahoma 
boundary, described on page 7. There was no necessity for chaining 
this line, but the distance is about l-i miles. 

The measurements on the parallel of latitude passing through the 
old initial monument on the Texas and Oklahoma boundar}- were made 
with a 200-foot steel tape, standard at 10 pounds tension and temper- 
ature 62"^ F. A constant tension of 10 pounds was maintained during 
measurements by means of an attached spring balance. Temperature 
readings were taken during measurements with a thermometer. 

The latitude of the initial monument is 31^ 31'. 7 N. (see p. 7), and 
the altitude above sea level is approximateU' 0.2 mile. 

April 16, 1902, I measured from the old initial monument east on 
the parallel 2,257.25 feet distant, to the astronomical meridian, tem- 
perature 51°. The temperature correction is subtractive and equals: 
(11 X 0.0000065 X 2,257.25) = -0.16 foot. The correct distance is 
therefore found to be: 2,257.1 feet. 

The difference in longitude for a given distance along the parallel is 
obtained by the equation: 



d6^' 



,/._>n R^-'v^ l—(^ sin"^ (p 
a cos q> 



where d6^ 

TO 

R" 

e 
<P 



=di£ference in longitude. 

= measurement on the parallel, 2,257.1 feet in this case. 
=206,265'', seconds of arc in a radian. 
=earth's eccentricity. 
= latitude of measurement. 

=earth's equatorial radius, which is 3,963.3 miles, to which is added 0.2 
mile for altitude. 



Log 
Log 


Solution of e<iuation. 
e 
sin (p 

e'- sin' <p 
e' sin' (p 
1-e' sin' cp 
l-e" sin' <p 


8.915 
8.915 
9. 753 
9.753 


2515 
2515 
990 
990 


Log 
Nat 
Nat 
Log 


7.338 
0.002 
0.997 
9.999 


483 
180 
820 
052 




9.999 
5.314 
3.353 




Log 
Log 
Log 


s/l-e' sin' cp 
206265 
2257. 1 


526 
426 
532 




8. 667 
7.236 




Log 
Log 
Log 
Log 


TOR"\/l-e'sin'<p 
3963. 5 3. 598079 
5280 3. 722634 
cos 34° 34'. 7 9.915585 


484 


Log 


a cos cp 
(7 6" 


298 


Log 

Nat 


1.431 
26". 99 


186 



The difference in longitude from the Red River astronomical merid- 
ian west to the old initial monument on the Texas and Oklahoma 
boundarv is therefore found to be 26". 99. 



THE ONE HUNDEEDTH MERIDIAN. 115 

LongiUule of the old initial momiment. 

Longitude of Red River astronomical meridian 100° 0^ 17^^.25 

Difference in longitude to old initial monument 26. 99 



Correct longitude of old initial monument 100 44. 24 

The correct longitude of the old initial monument on the Texas and 

Oklahoma boundary is therefore found to be 100^ 0' 44". 24. 

The proper mea.surement to make along the parallel to correspond 

to a given difference in longitude is obtained by the equation last used, 

but altered to the form: 

d a^' a cos (p 



R\/l— e"'' sin'' <p 
wnere d (9" = 17". 25 in this problem. 

Solution. 

Log i a cos ^ 7. 236 298 

Log I 17.25 1.236 789 



Log 
Log 
Log 


d B" a cos q> 
v^l— t'^sin"^ (p 
R'' 


9. 999526 
5. 314426 


8. 473 087 








Log 


R'Vl-^'^sin^.p 


5.313 952 



Log m 3.159 1.35 

Nat I m 1,442.6 

It is therefore found that from the Red River astronomical meridian 
east to the true one-hundredth meridian in this latitude and altitude 
is 1,442.6 feet. 

April 16, 1902, 1 measured from the astronomical meridian east on the 
parallel passing through the old initial monument, a distance of 1,442.7 
feet, temperature So"-. The temperature correction is subtractive and 
equals (7 X 0.0000065 X 1,442.7) = 0.1 foot; the correct distance is 
therefore 1,442.6 feet. 

At the point thus determined 1 set a gray sandstone, 10 by 14 by 45 
inches, 24 inches in the ground, to mark the true one-hundredth merid- 
ian; stone marked 100 W L 1902 on the N. face; witnessed b}" pits, 36 
by 36 by 12 inches, S. of stone 4 feet and N. of stone 10 feet distant, 
and a mound of earth, 5 feet base, 2^ feet high, 5 feet N. of stone. 
There are no suitable bearing trees or other rock or stone in this 
vicinity. (The stone which is set here we brought 14 miles.) 

From this monument the old initial monument on the Texas and 
Oklahoma boundary bears due west 3,699.7 feet. (1,442.6+2.257.1 = 
3,699.7 feet.) 

From this monument due south to the left bank of Red River is 
1,563 feet. 

The monument is set in the pasture belonging to Mr. Frank Kloskey, 
whose address is Olvmpus, Tex. 

The S£. corner of Mr. Kloskey's house bears N. 43'^ 45' W. from 
the monument, 314.5 feet distant. 

From the monument the pipe of Mr. Kloskev's windmill bears N. 
76*^ 36' W., 280 feet distant. 

The field Avork of this determination was completed on April 16, 1902. 

Arthur D. Kidder, 
Examiner of Surveys. 



116 THE ONE HUNDREDTH MERIDIAN. 

OATH OF ASSISTANT ASTRONOMER. 

I, Augustus MacConnel, hereby certify that I assisted Arthur D. 
Kidder, United States examiner of surveys, in making all of those 
observations and calculations for the establishment of the point of 
intersection of the true one-hundredth meridian with the Red River 
which are represented in the foregoing field notes as having been made 
by him and under his direction, and that said establishment has been 
in all respects, to the best of my knowledge and belief, well and faitli- 
fully made and in accordance with the instructions furnished by the 
Conmiissioner of the General Land Office. 

Augustus MacConnel, 

Astronomer. 
Subscribed and sworn to before me this 16th day of December, 1902. 
[seal.] Edwin D. Burgess, 

Deputy County Clerk, Chemung County, N. Y. 



OATH OF EXAMINER OF SURVEYS. 

I, Arthur D. Kidder, examiner of surveys, do solemnly swear that, 
in pursuance of special instructions received from the Commissioner 
of the General Land Office, bearing date the 4th day of February, 
1902, authorized by the Secretary of the Interior May 31, 1901, under 
the provisions of the act of Congress approved January 15, 1901 (31 
Stats., 731), 1 have well, faithfully, and truly, in my own proper per- 
son, and in strict conformity with the said' instructions, made all of 
those observations and calculations for the establishment of the point 
of intersection of the true one-hundredth meridian with the Red River, 
which are represented in the foregoing tield notes as having been 
made by me and under my direction, and that said establishment has 
been in all respects, to the best of my knowledge and belief, well 
and faithfully made. 

Arthur D. Kidder, 
Examiner of Surveys, Detailed U. S. Astronomer and Surveyor. 

Subscribed and sworn to before me this 23d day of January, 1903. 
[&EAL.] J. R. Young,' 

Clerk Supi^eme Court District of Columhia. 
By L. P. Williams, 

Assistant Clerk. 



THE ONE HUNDREDTH MERIDIAN. 117 

APPROVAL. 

Department of the Interior, 

General Land Office, 

Fehruary 5, 1903. 
The foregoing field notes of the observations and calculations for 
the establishment of the point of intersection of the true one-hundredth 
meridian with the Red River, executed by Arthur D. Kidder, exami- 
ner of surveys, detailed United States astronomer and surveyor, under 
instructions from the Commissioner of the General Land Ofiice bear- 
ing date February 4, 1902, authorized by the Secretary of the Interior 
May 31, 1901, pursuant to the provisions of the act of Congress 
approved Januarv 15, 1901 (U. S. Statutes at Large, vol. 31, p. 731), 
having been critically examined and found correct, the said field notes 
and the determination they describe are hereby approved. 

W. A. Richards, 

Con I tnissioner. 



'>VA ./ 



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