4 
MR. RUMKER’S OBSERVATIONS 
2. Latitude by repetitions on Stars North and South of the Zenith. 
a. Repetitions on Stars South of the Zenith. 
Canopus. 
1822. 
Barom. 
Therm. 
Simple Arc 
Cor. for Level. 
Refrac- 
tion. 
Reduction 
to Meridian. 
True Merid. 
Zenith Dist. 
True Declina- 
tion. 
Latitude. 
Jan. 16 
18 
18 
23 
26 
27 
inches. 
30.00 
30.02 
29-93 
O 
75 
74 
75 
0 / // 
19 2 38.3 
» 3 41.4 
18 49 17-4 
„ 58 52.13 
19 13 47.6 
18 51 10.5 
+ 19.3 
19-3 
19.0 
18.9 
19.3 
18.9 
— 15 47.26 
16 58.54 
2 28.22 
11 58.54 
27 15.3 
4 9-04 
O / // 
18 47 10.84 
» „ 2.17 
„ „ 8.18 
» r> 12.5 
„ 46 51.6 
„ 47 20.36 
52 36 6.86 
„ 7.2 
„ „ 8.8 
„ » 10.0 
J5 5J 10.29 
33 48 56.02 
„ 49 5.03 
„ 48 59.02 
„ „ 56.3 
„ 49 18.4 
„ 48 49.93 
Mean 
33 49 0.8 
u Trianguli Australis. 
Aug. 14 
30.112 
46 
34 53 18.74 
34 55 49-25 
+ 41.11 
41.16 
- 1 27.91 
4 5.44 
34 52 31.94 
„ 52 24.97 
68 41 33.44 
33 49 1.5 
,, „ 8.0 
Mean 
33 49 5.0 
(3 Argus. 
Oct. 21 
21 
22 
22 
23 
23 
29.72 
30.01 
30.16 
• • • • 
60.3 
60.0 
59-0 
35 16 7-44 
„ 16 20.41 
„ 15 16.66 
„ 15 14.03 
„ 17 12.87 
„ 16 11.10 
+ 39.96 
40.34 
40.67 
40.67 
- 6 42.6 
7 3.1 
5 53.1 
5 54.2 
7 48.4 
6 55.2 
35 10 4.8 
„ 9 57.27 
„ 10 3.9 
„ 10 0.09 
„ 10 5.14 
„ 9 56.57 
68 58 58.33 
33 48 53.53 
„ 49 1.06 
„ 48 54.43 
„ 48 58.24 
„ » 53.19 
„ 49 1.76 
Mean of the latitude by /3 Argus (weight 3) 
Canopus (weight 3) 
a Trianguli (weight 1) 
Mean of the latitude deduced from observation of stars south of zenith. . 
33 48 57.03 
„ 49 0.8 
„ 49 5.0 
33 48 59.8 
b. Repetitions on Stars North of the Zenith. 
a Ceti. 
1821. 
Barom. 
Therm. 
Simple Arc 
Cor. for Level. 
Refrac- 
tion. 
Reduction 
to Meridian. 
True Merid. 
Zenith Dist. 
True Declina- 
tion. 
Latitude. 
Dec. 22 
— 
— 
O / {f 
37 33 57.6 
„ 12 22.4 
„ 18 30.7 
„ 38 43.6 
+ 42.9 
42.3 
42.3 
43.0 
— 22 32.15 
0 53.09 
7 1 5.66 
27 33.55 
0 / n 
37 12 8.35 
„ 12 11.61 
„ 11 57.74 
„ 11 53.05 
Of ft 
3 23 13.9 
33 48 54.4 
„ ,, 57.7 
,, ,, 43.8 
» „ 39.1 
