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 OBSFRVATIONS.
ASTRONOMICAL OBSERVATIONS-Continued.
Doublle altitudes of the Sun's upper limb.
Time, p.m. Altitudes.
h. m. s. d. m. s.
1 24 28 91 05 40
1 25 22 90 50 00
1 26 19 90 37 4)
1 27 15 90 24 00
1 27 57 90 03 50
1 28 46 90 01 10
1 29 37 89 47 0
1 30 23 89 35 10
1 30 57 89 27 00
1 31 33 89 17 30
Time. Altitudes.
h. m. s. d. m. S.
9 09 57 85 18 00
9 11 44 86 03 10
9 13 46 86 54 40
9 15 13 87 30 40
9 16 29 88 02 20
Thermometer 60~ Fahrenheit.
CAMP ON DELAWARE CREEK.
Observations for the variation of the compass, March 7, 1854.
Magnetic amplitude of the Sun's centre
at his setting -.... 18~ 00' 00" south.
Variation - -... 11 53 00
Thermometer 37~ Fahrenheit.
Meridian altitude of Sirius.
Time. Altitude.
h. m. s. d. m. s.
7 22 32 82 57 00
FALLS OF THE PECOS, MOUTH OF THE DELAWARE
CREEK.
DETERMINATION OF LONGITUDE BY LUNAR DISTANCES.
Determination of time, Mlarch 10, 1854.-Double altitudes of
Sirius, in the west.
Magnetic amplitude of the Sun's centre at his setting, 20~ south.
Determination of time, March 4, 1854.-Double altitudes of the
Sun's upper limb.
Altitudes.
d. m. S.
95 26 10
95 45 00
95 59 40
96 14 00
96 29 30
96 44 20
96 58 30
Altitudes.
d. m. s.
67 42 05
67 24 25
67 08 05
66 53 05
66 35 25
66 16 45
66 02 35
65 48 45
65 30 55
65. 15 25
10 34 24 96 58 30 9 10 58 65 15 25
119
Double altitudes of
Time.
A. M. S.
8 57 28
8 58 50
9 00 39
9 ot 40
9 02 40
Double, altitudes of,8
Altitudes.
d. M. S.
I(,3 05 00
.to2 37 20
101 57 10
101 36 20
101 26 00
Time.
M. S.
01 04
02 18
03 24
04 29
05 36
06 54
07 50
08 47
09 56
10 58
Time, a. ni.
h. M. S.
10 26 56
10 28 23
10 29 29
10 30 44
10 3t 56
10 33 14
10 34 24
h.
9
9
9
9
9
9
9
9
9
9