ASTRONOMICAL OBSERVATIONS. 
23 
APPENDIX A—Continued. 
CAMP G4 A—OCTOBER 14, 1855—Continued. 
Observer —Lieut. II. L. Abbot, U. S. Top. Engineers. 
bject observed. 
Time of observ’n 
by chronometer. 
Observed double 
altitudes. 
II. 
m. 
s . 
d. 
m. 
s. 
a Cor. Borealis. 
8 
02 
53.0 
49 
36 
10 
8 
04 
41.0 
48 
59 
40 
8 
05 
44.0 
48 
38 
30 
8 
06 
41.0 
48 
18 
20 
8 
07 
59.0 
47 
5.3 
10 
8 
09 
28.0 
47 
22 
00 
Polaris. 
7 
17 
13.0 
91 
23 
50 
7 
18 
10.5 
91 
25 
00 
7 
19 
33.5 
91 
25 
50 
7 
24 
24.0 
91 
29 
10 
7 
25 
49.5 
91 
30 
30 
7 
27 
16.0 
91 
31 
30 
7 
28 
04.5 
91 
32 
40 
7 
28 
55.5 
91 
33 
10 
7 
30 
04.0 
91 
33 
50 
7 
31 
43.5 
91 
35 
00 
Index error, —O' 50”. Barometer, 29.5 in. Thermome¬ 
ter, 41°.5. 
CAMP 64 A—OCTOBER 16, 1855 
Observer —Lieut. H. L. Abbot, U. S. Top. Engineers. 
h. 
m. 
s. 
d. 
??2. 
s. 
Sun’s lower limb. 
9 
48 
51.5 
50 
00 
00 
9 
49 
31.0 
50 
10 
oo ! 
9 
50 
13.5 
50 
20 
00 
9 
50 
53.5 
50 
30 
00 
9 
51 
36.5 
50 
40 
00 
9 
52 
17.5 
50 
50 
00 
9 
53 
01.0 
51 
00 
00 
9 
53 
40.5 
51 
10 
00 
9 
54 
22.0 
51 
20 
00 
9 
55 
05.0 
51 
30 
00 
9 
55 
47.0 
51 
40 
00 
9 
56 
30.0 
51 
50 
00 
9 
57 
10.0 
52 
00 
00 
Sun’s lower limb. 
2 
55 
52.0 
52 
00 
00 
2 
56 
35.0 
51 
50 
00 I 
2 
57 
18.0 
51 
40 
00 
2 
58 
00.0 
51 
30 
00 
2 
58 
44.0 
51 
20 
00 
2 
59 
24.0 
51 
10 
00 
3 
00 
06.0 
51 
00 
00 
3 
00 
49.0 
50 
50 
00 
3 
01 
30.0 
50 
40 
00 
3 
02 
11.5 
50 
30 
00 
3 
02 
52.5 
50 
20 
00 
3 
03 
33.0 
50 
10 
00 
3 
04 
15.0 
50 
00 
00 
Index error, 
— 0 
50”. 
CAMP 68 A- 
-OCTOBER 24, 
1855. 
Observer —Lieut. H. I 
i. Abbot, 
U. S. 7 
’op. Engineers. 
h. 
m. 
S. 
d. 
m. 
s. 
u Cor. Borealis. 
7 
06 
08.0 
56 
24 
10 
7 
08 
03.0 
55 
43 
40 
7 
09 
26.5 
55 
14 
50 
7 
10 
46.5 
54 
4o 
50 
7 
11 
47.0 
54 
26 
10 
7 
12 
49.5 
54 
03 
40 
CAMP 68 A—OCTOBER 24, 1855-Continued. 
Observer —Lieut. H. L. Abbot, U. S. Top. Engineers. 
Object observed. 
Time 
of observ’n 
Observed do 
uble 
by chronometer. 
altitudes 
h. 
Til, 
s. 
d. 
m. 
s. 
Polaris. 
7 
36 
13.5 
91 
03 
20 
7 
38 
16.5 
91 
05 
00 
7 
39 
35.5 
91 
06 
20 
7 
41 
15.0 
91 
07 
20 
7 
43 
44.0 
91 
08 
10 
7 
45 
06.0 
91 
09 
50 
7 
46 
25.5 
91 
11 
10 
7 
47 
52.5 
91 
12 
10 
7 
49 
-08.0 
91 
13 
10 
7 
50 
00.5 
91 
13 
50 
Index error, — 6' 00". 
Barometer, 30.0 
in. Thermome- 
1 ter, 45°. 
CAMP 69 A—OCTOBER 25, 
Observer —Lieut. H. L. Abbot, U. S. T 
1855. 
op. Engineers. 
h. 
Ml. 
s. 
d. 
m 
S. 
a Lyra. 
8 
20 
45.0 
105 
25 
00 
8 
22 
24.0 
104 
50 
40 
8 
23 
28.0 
104 
29 
20 
8 
26 
31.0 
103 
23 
40 
8 
27 
45.5 
102 
50 
20 
8 
29 
51.5 
102 
33 
00 
1 1 
Polaris. 
8 
32 
58.0 
90 
49 
10 
8 
37 
13.0 
90 
52 
40 
8 
33 
32.0 
90 
53 
00 
8 
39 
56.5 
90 
53 
10 
8 
41 
06.5 
90 
54 
20 
8 
42 
53.0 
90 
54 
50 
8 
43 
48.0 
90 
55 
20 
8 
44 
42.0 
90 
56 
00 
8 
45 
50.0 
90 
56 
30 
8 
46 
55.0 
90 
57 
10 
Index error, — 5' 20”. Barometer, 29.9 in. Thermome¬ 
ter, 50°.5. 
CAMP 70 A—OCTOBER 26, 1855. 
Observer —Lieut. H. L. Abbot, U. S. Top. Engineers. 
n Pegasi. 
!Cor. Borealis. 
Polaris. 
h. 
Ml. 
s. 
d. 
m. 
s. 
6 
50 
05.0 
120 
54 
50 
6 
52 
31.0 
121 
45 
20 
6 
53 
49.5 
122 
11 
00 
6 
54 
40.0 
122 
30 
00 
6 
55 
23.5 
122 
43 
30 
6 
56 
27.0 
123 
05 
30 
6 
59 
37.0 
55 
17 
20 
7 
01 
14.0 
54 
40 
30 
7 
02 
22.5 
54 
18 
20 
7 
03 
41.0 
53 
51 
10 
7 
05 
09.0 
5.S 
19 
50 
7 
06 
33.0 
52 
50 
40 
7 
10 
53.5 
89 
19 
40 
7 
12 
18.0 
89 
20 
40 
7 
13 
02.5 
89 
21 
20 
7 
13 
48.5 
89 
21 
50 
7 
14 
38.0 
89 
22 
20 
