Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean: Vol. 2, Pt. 4

APPENDIX L.-ASTRONOMICAL OBSERVATIONS.
ASTRONOMICAL OBSEPRVATIONS-Continued.
Determination of latitude, Jlarch 31, 1854. —Douzble altitudes of I Determination of timne, lqirch 31, 1854.-Double altitudes of
,7 Urs'ce Aajoris, in the east. the Sun's utpper limb.
Time. Altitudes.
h. 7e. s. d. m. s.
8 19 29 80 24 10
8 20) 31 80 44 40
8 21 23 81 ()2 40
8 22 12 81 18 40
8 2. 57 81 32 40)
8 23 51 81 48 40
8 24 47 82 6 50r
8 25 42 82 24 50
Double altitudes of Spica Firginis, in the east.
i, j lThermnometer 55 o Fahrenheit.
CAMP FORTY-FOUR MILES EAiST OF SULPHUR
| I SPRINGS OF TIEE COLORADO.
i i -
Altitudes.
DETERM'INATION OF LATITUDE.
Approximate latitude to be used in the first computation of
9 40 Ol 6 ( 20time, 32~0 30'.
D etermination of time, April 14, 1854.-Double altitudes of
9 42 46 9 00 O Sirius, in the wtest.
d.
87
67
68
68
68
69
69
69
Chronometer slow of
mean tine.
Thermometer 410 Fahrenheit.
h. m. s.
Observationsfor the variation of the compass, March 31, 1854.-(
Double altitude of Polaris, in the west.
cl.,
5'7
57
56
56i
55
rr)
55"
7 15 27 5:~~~~~~~~t) 1$ 21
55
54
54
'rime. Altitude. Magnetic Lea:'i g. 7
hi.. Cl... d. s. 11,1d. 54. 4.
7 2t 17 63 48 40 N. 13 30 00W. I
I'
Doutble altitu,des of Arcturus, in the east.
Altitude. Magnetic bearing.
d. as. s. d. m. s.
63 26 O0 S. 27 10 00W.
Ititudes. Chronometer slow of
mean time.
_.
d.
70
71
71
7
72
72
73
73
73
74
Double altitude of Spica Virginis, in the east.
h.
8
8
I8
1 8
8
8
8
I 8
i 8
8
Time. Altitude. Magnetic bearing.
h. m. s. d. m. s. d. m. s.
9 38 04 67 33 10 S.59 O0 (0
0 32 15.04
Thermometer 47~ Fahrenheit.
I.
142
i
i
i
Time, p. m.
Altitudes.
h.
I
I
I
I
I
I
I
I
(7.
107
.107
107
1 (-)7
]()6
1 ('6
; 6
-, - 6
1 4
15
16
16
17
18
18
19
S.
49
2 r)
4.1,
25
Oi,i
47
7
itt.
:34
-4
1 3
O()
48
.31- -3
I 0
8.
50
1 0
31)
I)o
2,')
30
40
20
Time.
h.
9
9
9
9
9
9
9
9
7)1.
38
39
40
40
41
42
43
44
8.
04
01
ot
57
51
46
44
31
M.
33
51
26
43
.00
17
32
S.
10
20
20
1 0
10
00
00
30
I
I
I
i
h.
7'
7
7
7
7
7
7
7
7
7
in.
07
08
1 1
12
13
14
15
16
17
18
S.
0 1
19
05
0.13
29
29
27 1
1113
12
23
I)i.
44
32
'5
18
53
37
1
03
47
26
S.
50
4;t)
00
(io
3t)
00
20
4,,)
40
10
0 32 17. 09
I
I
Double altitztde of Siritts, in the ivest.
i
,I I
i
Time.
i
I
..i
h. gn. s.
7 47 57
ime.
i
i
i
I
I
i
I
()4
05
06
(', 7
08
C, 9
09
10
I 1
12
S.
06
13
07
10
04
57
54
51
50
117.
33
24
47
16
39
(12
25
50
14
S.
2 ')
0 0
4 0
4 0
30
50
0 0
1 0
2 0
50
Ii