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.
ASTRONOAIICAL OBSERVATIONS.
AT DONA ANA, NEW MEXICO, FOR RATING THE CHRO NOMETER.
Determination of timne, February 1, 1854.-Equal altitudes of the
Sun's upper limb.
Time, a m. Altitudes. Time, p. m.
Determination of time, January 28, 185 4.-Equal altitudes of the
Sun's upper limb.
Time, p. in.
~ M. s.
56 48
53 38
Lost.
Lost.
Lost.
Lost.
Lost.
28
48
15
3~
51
11
32
Determination of tinme, February 2, 1854.-Equal altitudes of the
Sun's upper limb.
Determination of time, January 29, 1854.-Equal altitudes of the
Sun's upper limb.
Time, a. m. Altitudes. Time, p. m.
h. in. s. d.?i. s. h. m. s.
10 31 40 70 39 30 1 57 23
10 33 18 71 0O 50 1 55 44
10 34 36 71 17 30 l 54 21
10 35 56 71 34 40 1 53 02
10 37 00 71 54 30 1 51 21
10( 38 54 72 10 50 Lost.
10 39 10 72 25 50 Lost.
Determination of time, February 5, 1854.-Equal altitudes of the
Sun's upper limb.
Time, a. in. Altitudes. Time, p. m.
I
h. mn. s. d. m. s. h. m. s.
10 35 18 73 09 00(?) 1 45 38
10 37 05 73 21 40 1 47 07
10 38 26 73 37 50 1 48 26
10 39 44 73 54 00 1 49 59
10 41 18 74 12 40 1 51 17
10 42 36 74 29 00 1 52 38
10 44 06 74 46 30 1 53 36
.I
It. 717. 5.
10 15 44
10 17 04
101 H 832
10 20 06
10 21 40
10 23 46
10 25 23
Determination of time, January 30,1854.-Equal altitudes of the
Sun's upper limb.
d. m. s.
68 07 10
68 27 30
68 56 40
69 21 40
69 46 00
70 08 40
70 29 20
AT CAMP, FOUR AND TWO-TENTHS MILES EAST OF THE
HUECO TANKS.
Determination of latitude, February 22, 1854.-Double altitudes
of Sirius, in the east.
Determination of time, January 31, 1854.-Equal altitudes of the
Sun's upper limb.
TimLe, a. m. Altitudes.
h. m. s. d. Mn. s.
7 41 04 80 41 30
7 43 40 80 58 20
7 46 03 81 10 00
7 48 44 1 81 24 10
7 50 27 81 32 30
7 52 52 81 44 00
I
h. m. s.
0 62 O6 46
2 05 10
2 03 44
Lost.
2 00 27
1 58 38
1 56 54
THeavene very hazy, with rehe itavy clouds.
Heavens very hazy, witht heavy clouds.
i
i
I
i
I
112
APPENDIX L.
h.
10
10
10
10
10
10
10
d.
69
70
70
7o
71
71
71
h
I
1
Time, a. In.
Altitudes.
M.
30
31
32
34
35
37
38
S.
30
55
08
28
49
12
24
?71.
56
14
38
46
02
19
34
S.
10
20
40
1-0
30
10
20
d.
65
65
66
66
66
67
67
h.
2
2
2
2
2
2
2
h.
to
10
10
10
10
10
10
S.
oo
30
40
30
30
30
00
M.
09
07
05
04
03
0 1
00
S.
17
45
44
30
05
32
00
ni.
is
20
21
23
24
26
27
S.
04
37
35
49
21
47
17
Altitudes.
Time, p. m.
Time, a. - iD.
d.
65
65
65
66
66
67
67
S.
40
50
40
50
10
00
10
h.
2
2
2
2
2
2
2
?71.
14
33
54
16
37
05
27
M.
12
10
09
07
C6
04
02
S.
02
33
13
3
00
00
18
0
Time, a. m.
AI(itudes.
Time, p. in.
h.
2
2
/I.
10
10
10
10
10
10
10
. M.
01
00
Lost.
Lost.
Lost.
Lost.
Lost.
S.
47
12
M.
26
27
30
Q2
33
35
37
S.
15
51
07
03
59
45
32
i
I
i
i
i
d.
67
67
67
68
68
69
69
h.
10
10
10
10
10
10
10
M.
17
39
58
22
41
05
30
S.
40
00
00
10
40
40
40
M.
21
22
24
26
27
29
31
S.
18
46
14
01
32
22
18
I