PENDULUM AT THE ROYAL OBSERVATORY, CAPE OF GOOD HOPE. 169 
General Remark. — During both series of experiments, the observatory was 
kept in the same state, the North shutter being open during the day, and the 
door of the recess, in which the clock and pendulum stood, constantly closed, 
with the exception of the two small openings made in it for the purpose of 
showing the dial plate, and the graduated arc of the pendulum. During the 
second series, the weather was particularly favourable, both for observations of 
the transit instrument and pendulum. 
Cape of Good Hope ; Observer Mr. Fallows. 
First Series. 
Attached 
Therm. 
Time of Coin. 
1829. 
Barom. 
No. of 
Disapp. 
Re-app. 
by the Siderea 
Arc. 
Remarks. 
Therm. 
A. 
B. 
Coin. 
Clock. 
Dec. r 
2 i 
6°6.5 
inches. 
30.205 
68.2 
69-1 
1 
m s 
50 41 
m s 
50 56\ 
h m s 
16 50 48f 
1.38 
This day very favourable for 
67.0 
30.205 
68.0 
68.9 
31 
28 31 
28 51 
19 28 41 
0.51 
observation ; little wind — 
4 
67.1 
67.5 
30.205 
30.207 
68.0 
67.1 
68.9 
68.0 
1 
31 
33 50 
11 44 
34 4§ 
12 1 
19 33 57| 
22 11 52| 
1.48 
0.61 
the Observatory chase shut, 
exceptwhenobserving. The 
Thermometers read off be- 
si 
66.0 
30.205 
67.1 
68.0 
1 
38 1 
38 16 
14 38 8! 
1.38 
fore the North chase was 
3 1 
68.5 
30.205 
69-6 
70.5 
31 
15 56 
16 13 
17 16 4! 
0.57 
opened. 
/ 
6 8.7 
30.205 
70.1 
71.2 
1 
42 43| 
42 59 
17 42 51!; 
1.20 
The weather fine during the 
* t 
68.5 
30.175 
70.2 
71.2 
31 
20 24 
20 44| 
20 20 34± 
0.50 
whole of the day. 
i 
68.6 
30.174 
70.2 
71.3 
1 
30 6 
30 22 
20 30 14 
1.22 
” i 
68.0 
30.151 
68.0 
69.0 
31 
7 57 
8 15 
23 8 6 
0.49 
4 j 
65.0 
30.102 
64.2 
65.0 
1 
3 18 
3 32 
12 3 25 
1.38 
4 l 
67.5 
30.139 
66.9 
67-6 
31 
41 31 
41 49 
14 41 40 
0.57 
67.6 
30.140 
66.9 
67-6 
1 
47 24 
47 40 
14 47 32 
1.20 
” l 
68.5 
30.165 
69.1 
70.0 
31 
25 26| 
25 41| 
17 25 34 
0.51 
The South-east wind spring- 
/ 
68.6 
30.166 
69.1 
70.0 
1 
31 10* 
31 26* 
17 31 18 
1.35 
ing up. All the doors clo- 
” l 
68.5 
30.120 
68.3 
69-1 
31 
9 0 
9 18 
20 9 9 
0.58 
sed. What is called at Cape 
Town a South-easter, ought 
( 
68.5 
30.120 
6 7.0 
67-8 
1 
19 40 
19 54 
20 19 47 
1.41 
to be designated South-by- 
” l 
68.0 
30.108 
67.3 
68.0 
31 
57 33 
57 52 
22 57 42! 
0.58 
east. 
5 i 
64.0 
30.125 
63.0 
63.6 
1 
40 18 
40 34 
10 40 26 
1.42 
The weather rainy; wind due 
5 1 
64.5 
30.127 
64.0 
64.8 
31 
18 32 
18 49 
13 18 40! 
0.68 
North ; no stars last night, 
i 
64.5 
30.127 
64.1 
64.8 
1 
24 13 
24 28 
13 24 20! 
1.29 
from clouds. 
” 1 
66.4 
30.127 
65.8 
66.4 
31 
2 31 
2 46 
16 2 38! 
0.56 
I 
66.3 
30.127 
66.3 
67-0 
1 
13 24 
13 32 
16 13 28 
1.72 
”i 
68.0 
30.200 
68.4 
69.2 
42 
49 5| 
49 22! 
19 49 14 
0.50 
The sky clearing up. 
I 
68.0 
30.200 
68.1 
68.9 
1 
54 25 
54 41 
19 54 33 
1.13 
” 1 
68.0 
30.115 
68.0 
68.5 
31 
32 20 
32 36 
22 32 28 
0.49 
Mean 
67.23 
30.1594 
MDCCCXXX 
Z 
