TO YELLOWSTONE NATIONAL PARK. 49 
Determination of latitude by circum-meridian altitudes. 
Station, Camp Bakor, Montana.—Date, August 5, 1875.—Object observed, « Ophiuchi.—Ref. circle, Gambay & Son, 212.—Chronometer, Bond 
& Son, 202.—Observer, Wood.—Computer, Wood.—Bar., 25',30,—'Ther., 53°. 
Times of obs. |Mer. dist. 28"? | 0981 cos D |Rod. to mer,| Observed 2__cir- 
, = sin 1” ee |) Cum - meridian 
by chron, =p. an Cou @ inare=2.|  sititudes. 
hom. 8. tou “ “ ° ‘ “ 
18 35 33.5 6 13 15.9 os 
37 54.5 3 52 29.4 a 
38 51. 2 55 16.7 d 
39 51. 1 55 12 7 
40 52.5 54 1.6 4 | 
41 59.5 13 Jacsemeee ss a 40.8 
43 10.5 1 24 3.9 4 ‘ 
44 18, 2. 32 12.6 ie 
45 17% 3 31 24.3 
46 41, 4 56 47.8 on | 
47 585] 6 12 75.5 ga 
18 49 24, VT 38 114.4 oO l 623 26 40 
720 00 00 
34.1 SEEN SEES 
12)1343 26 40 
Ml 57 13.3, 
55 58 36.6. 
33 
55 58 03.6. 
40,8 
55°58 «44.4 
102 39 08.7 
46 40 24 
Oi ee hom 8. 
App. lat, =1 = 46 40 40 cos 9.83648 Chron. correction 1 12 35.8  Semi-diam. 
Dec = 12 39 087 cos 9.98932 Equation of time 17 29 10.4 Refraction 33” 
a = 55 58 cos 0. 25206 ——_——_ Parallax 
a 18 41 46.2 
1, 196 0. 07786 cad 
Determination of latitude by circum-meridian altitudes. 
Station, Camp Baker, Montana.—Date, Augnst 5, 1875.—Object observed, » Serpentis.—Ref. circle, Gambay & Son, 212.—Chronometer, Bond 
& Son, 202,—Observer, Wood.—Computer, Wood.—Bar., 275», 30.—Ther., 53°. 
: , ; 
Times of obs. |Mer. dist. |? 9° 4?| cos tcos D allt Sige 
by chron. =p. sinl’ |-—Cosa 
y =k cos @ tudes. 
h, m8. mens - we a 
19 23 15. 4 14. 35.2 4 ( 
24 53.5] 2 35.5 13. 2 fy 
25 55. 1 34 4.8 4 
26 55.5 33.5 0.6 ig 
27 56.5 27.5 0.4 po 
28 54. | 1 25. 3.9 | a: 
30 24.5] 2 55.5 16.8 $ 
19 31 34. 4 05. 32.7 |) 8 8) 646 29 00 
13. 45 80 48 37.5 
“40 24 18.7 
56.4 
40 23 22.3 
“40 23 34.1 
of # hom 8% 
App. lat.=1= 46 40 40 cos 9.83648 Chron. correction 1 12 35.8 Semi-diam. 
Dec. = 2 55 483 cos 9.99943 xR 18 14 53.2 Refraction 56.4 
a = 40 23 20 cos 0.11824 —_—— Parallax 
See 19 27 29.0 
. 879 9, 94415 
‘TW 
