APPENDIX L— ASTRONOMICAL OBSERVATIONS. 
145 
ASTRONOMICAL OBSERVATIONS—Continued. 
AT CAMP ON TRIBUTARY OP THE BRAZOS, TEN MILES 
WEST OP THE CLEAR PORK. 
Determination of latitude —Continued. 
DEDUCTION OF LATITUDE. 
Approximate latitude to be used in the first computation of 
time, 32° 5P. 
j Determination of time , April 20, 1854.— Double altitudes of Si¬ 
rius, in the west. 
Time. 
23 
25 
31 
34 
Altitudes. 
Deduced latitudes. 
52 
55 
25 
43 
d. m. s. 
63 47 00 
63 46 00 
63- 44 40 
63 43 30 
63 41 40 
Time. 
Altitudes. 
Chronometer slow of 
h. m. 
6 24 
6 25 
6 26 
6 27 
6 28 
d. 
59 
50 
39 
33 
59 
58 
58 
48 
J9 
02 
48 
33 
mean time. 
50 
40 
00 
00 
0 42 44.66 
6 29 25 
6 30 18 
6 31 04 
6 31 55 
& 32 55 
58 18 10 
58 04 20 
57 51 20 
57 37 30 
57 20 20 
0 42 43.74 
Double altitudes of Arcturus, in the east. 
7 36 30 
7 39 00 
7 41 27 
7 43 29 
7 45 24 
7 47 20 
7 49 05 
7 50 52 
7 52 28 
7 54 26 
7 56 20 
63 40 10 
63 38 50 
63 37 40 
63 36 40 
63 35 30 
63 34 40 
32 53 41.73 
63 34 
63 33 
63 32 
63 31 
63- 30 
00 
00 
00 
00 
20 
32 53 37.87 
Thermometer 69° Fahrenheit. 
Determination of latitude , April 20, 1854. —Double altitudes of 
Spica Virginis, in the east. 
Time. 
h. m. 
7 58 
7 59 
8 00 
8 01 
8 02 
Altitudes. 
Chronometer slow of 
15 
13 
16 
15 
26 
d. 
82 
82 
84 
26 
15 
38 
08 
mean time. 
10 
00 
40 
40 
40 
h. m. 
8 37 
8 33 
8 39 
8 40 
8 41 
Altitudes. 
Deduced latitudes. 
34 
47 
45 
32 
34 
d. m. s. 
75 46 30 
76 06 20 
76 21 10 
76 33 20 
76 49 50 
d. to. s. 
32 54 53 
8 03 17 
8 04 05 
8 04 58 
8 06 11 
8 07 05 
84 30 30 
84 52 10 
85 14 40 
85 43 10 
86 07 20 
0 42 37.35 
Thermometer 69° Fahrenheit. 
Determination of latitude , April 20, 1854. —Double altitudes of 
Polaris, in the west. 
Time. 
Altitudes. 
Deduced latitudes. 
h. to. s. 
7 14 26 
7 15 56 
7 17 37 
7 19 48 
7 22 01 
d. to. s. 
63 52 20 
63 51 20 
63 50 20 
63 49 10 
63 48 10 
32 53 46.38 
8 42 ~ 28 
8 43 19 
8 44 13 
8 46 02 
8 46 43 
8 47 27 
8 48 15 
8 49 03 
8 49 53 
8 50 38 
8 51 39 
8 52 29 
8 53 20 
8 54 03 
8 55 01 
8 55 52 
8 56 37 
77 04 00 
77 16 50 
77 30 30 
77 58 40 
78 08 40 
78 20 40 
78 31 50 
78 44 10 
78 55 20 
79 07 30 
79 22 20 
79 34 40 
79 46 30 
79 57 10 
80 10 00 
80 23 10 
80 33 40 
32 54 48 
32 54 43 
32 54 39 
Thermometer 69° Fahrenheit. 
