ASTRONOMICAL OBSERVATIONS. 
21 
APPENDIX A—Continued. 
CAMP 52 A—SEPTEMBER 27, 1855 
— Continued. 
CAMP 54 A, (same as 41 A)— 
-SEPT. 29, 1853—Continued. 
Observer —Lieut. H. L. Abbot, 
U. S. Top. Engineers. 
Observer —Lieut. II. L 
. Abbot, 
U. S. Top. Engineers 
Object observed. 
Time of observ’n 
Observed double 
Object observed. 
Time of ob;erv’n 
Observed double 
by chronometer. 
altitudes. 
by chronometer. 
altitudes. 
h. 
in. 
s. 
cl. 
m 
s. 
h. 
m 
s. 
el. 
in. s. 
Polaris... 
8 
08 
29.5 
89 
43 
10 
8 
50 
46 0 
90 
33 40 
8 
10 
11.0 
89 
44 
20 
8 
51 
34.5 
90 
34 30 
8 
11 
20.0 
89 
45 
30 
8 
52 
24.5 
90 
35 20 
8 
12 
11.5 
89 
46 
20 
8 
53 
10.5 
90 
35 50 
8 
13 
07.5 
89 
46 
40 
8 
14 
42.5 
89 
48 
10 
8 
16 
21.0 
89 
49 
10 
Index error, -f- 1' 20". 
Barometer, 27.7 in. Ther 
, 4I°.5. 
8 
17 
47.5 
89 
50 
30 
8 
18 
43.0 
89 
51 
30 
CAMP 55 A, (same 
as 42 A)- 
-OCTOBER 2, 
1855. 
8 
19 
44.5 
89 
52 
00 
Observer —Lieut. R. L. Abbot, 
U. S. Top. Engineers. 
Index error, -}- 1' 20". 
Barometer, 25.5 
in. Thermome- 
h. 
in. 
s. 
el. 
in. s. 
ter, 49°. 
Sun’s lower limb. 
9 
43 
44.5 
58 
00 00 
9 
44 
23.5 
58 
10 00 
CAMP 53 A— 
SEPTEMBER 28, 1855. 
9 
45 
02.0 
58 
20 00 
9 
45 
41.5 
58 
30 00 
Observer —Lieut. H. L. Abbot, 
U. S. Top. Engineers. 
9 
46 
18.0 
58 
40 00 
9 
46 
56.5 
58 
50 00 
9 
47 
33.5 
59 
00 0 
h. 
in. 
s. 
d. 
in. 
s. 
9 
48 
12.5 
59 
10 00 
v Pegasi .. 
8 
05 
06.5 
110 
02 
50 
9 
48 
52.5 
59 
20 00 
8 
07 
46.0 
no 
36 
10 
9 
49 
30.0 
59 
30 00 
8 
08 
50.5 
no 
57 
20 
9 
5 i 
08.5 
59 
40 00 
8 
10 
11.5 
in 
26 
30 
9 
50 
47.0 
59 
50 UO 
8 
11 
45.0 
in 
59 
10 
9 
51 
25.0 
60 
00 00 
8 
12 
50.5 
112 
21 
50 
Sun’s lower limb. 
3 
03 
44.0 
60 
00 00 
a Cor. Borealis. 
7 
33 
33.5 
81 
21 
10 
3 
04 
23.5 
59 
50 00 
7 
35 
08.0 
80 
40 
30 
3 
05 
05.0 
59 
40 00 
7 
36 
34.0 
80 
10 
30 
3 
05 
42.0 
59 
30 00 
7 
37 
37.5 
79 
48 
20 
3 
06 
20.0 
59 
20 00 
7 
38 
36.5 
79 
26 
00 
3 
06 
59.0 
59 
10 00 
7 
39 
48.5 
78 
59 
40 
3 
07 
37.5 
59 
00 00 
3 
08 
13.5 
58 
50 00 
Polaris....... 
7 
42 
58.5 
89 
38 
50 
3 
08 
52.0 
58 
40 00 
7 
44 
40.5 
89 
39 
30 
3 
09 
31.5 
58 
30 00 
7 
46 
20.0 
89 
40 
20 
3 
10 
08.5 
58 
20 00 
7 
47 
10.0 
89 
41 
10 
3 
10 
47.0 
58 
10 00 
7 
48 
04.0 
89 
41 
50 
3 
11 
25.5 
58 
00 00 
7 
49 
58.0 
89 
43 
10 
7 
51 
23.0 
89 
44 
20 
Index error. 
— 0' 30". 
7 
52 
45.5 
89 
45 
00 
7 
53 
52.5 
89 
46 
10 
CAMP 57 A—OCTOBER 5. 
1855. 
7 
55 
06.5 
89 
47 
20 
Observer —Lieut. FI. L. Abbot, 
U. S. Top. Engineers. 
Index error, -j- 1' 20". Barometer, 27.7 in. Therrnome- 
ter, 4i°.5. 
CAMP 54 A, (same as 41 A)—SEPTEMBER 29, 1855. 
Observer —Lieut. II. L. Abbot, U. S. Top. Engineers. 
h. 
in. 
s. 
el. 
m. 
s. 
i) Pegasi.. 
9 
02 
10.0 
130 
22 
30 
9 
03 
52.0 
130 
55 
40 
9 
05 
08.5 
131 
16 
30 
9 
09 
05.5 
132 
30 
20 
9 
11 
06.0 
133 
06 
20 
9 
12 
27.0 
133 
30 
10 
Polaris...... 
8 
41 
54.0 
90 
27 
20 
8 
44 
02.5 
90 
29 
30 
8 
45 
03.5 
90 
30 
00 
8 
47 
40.0 
90 
31 
30 
8 
48 
54.0 
90 
32 
10 
8 
49 
47.5 
90 
32 
50 
h. 
in. 
s. 
el. 
in. 
s. 
r] Pegasi . 
, , , ,, 
,,,,,,, 
7 
56 
51.0 
116 
24 
50 
7 
58 
54.0 
117 
06 
50 
8 
00 
43.5 
117 
44 
20 
8 
02 
16.0 
118 
14 
30 
8 
03 
39.5 
118 
42 
30 
8 
05 
28.0 
119 
21 
10 
Polaris .. 
8 
13 
45.5 
91 
10 
20 
8 
15 
40.0 
91 
11 
00 
8 
16 
55.0 
91 
12 
00 
8 
17 
49.0 
91 
12 
30 
8 
18 
58.0 
91 
12 
50 
8 
22 
25.0 
91 
15 
50 
8 
23 
57.5 
91 
17 
20 
8 
25 
14.0 
91 
18 
40 
8 
26 
29.5 
91 
19 
20 
8 
27 
56.0 
91 
20 
00 
8 
29 
13.0 
91 
20 
50 
Index error, — 0'30". Barometer, 27.3 in. Ther., 4G°. 
