172 REV. F. FALLOWS’S observations with an invariable 
Rate of the Sidereal Clock. 
Dec. 1 8th. 
Dec. 19 th. 
Dec. 20th. 
By p Auriga: .... 
Sirius 
Procyon 
Pollux 
IVIean Rate. . 
s 
-0.04 
-0.15 
+ 0.05 
0.00 
-0.03 
By a Ceti 
Aldebaran .... 
jS Tauri 
S Orionis 
K 
Mean Rate. . 
S 
-0.28 
0.00 
0.00 
0.12 
-0.46 
-0.17 
By a Ceti 
Aldebaran .... 
Rigel 
0 Tauri .... 
S Orionis 
K 
Mean Rate. . 
S 
+ 0.03 
-0.02 
0.22 
0.04 
0.07 
-0.20 
-0.08 
Third Series. 
1829. 
Attached 
Therm. 
Barom. 
Therm. 
No. of 
Coin. 
Disapp. 
Re- 
app. 
Time of Coin, 
by the Sidereal 
Clock. 
Arc. 
Remarks. 
A. 
B. 
Dec. r 
inches. 
0 
m 
S 
m 
s 
h 
m 
S 
72.0 
30.094 
71.9 
72.2 
1 
26 
48 
27 
4 
22 
26 
56 
1.29 
Closed the c lock door ; the face open. 
23 | 
71.0 
30.070 
70.0 
70.3 
28 
48 
33 
48 
52 
0 
48 
42± 
0.58 
0 , f 
66.0 
30.095 
65.0 
65.5 
1 
45 
0 
45 
5 
11 
45 
H 
1.84 
The light on the right not good, so opened the 
24 ( 
70.0 
30.094 
69.1 
69.6 
62 
5 
59 
6 
10 
17 
6 
H 
0.34 
clock door. Door shut while swinging. 
/ 
71.1 
39.094 
71-9 
72.4 
1 
10 
37 
10 
52 
17 
10 
444 
1.31 
Clock door still left open. 
” l 
74.0 
30.072 
74.3 
75.0 
24 
10 
14 
10 
33 
19 
10 
23± 
0.68 
f 
74.0 
30.072 
76.0 
76.6 
1 
16 
1 
16 
17 
19 
16 
9 
0.92 
There may be a slight mistake in the first arc 
” 1 
74.0 
30.055 
75.0 
75.7 
31 
53 
20 
53 
32 
21 
53 
26 
0.40 
0.92 ; the pencil mark on the slate being dim. 
/ 
74.0 
30.054 
75.4 
76.0 
1 
59 
12 
59 
26 
21 
59 
19 
1.38 
Clock door not quite closed. 
” 1 
73.0 
30.080 
72.9 
73.1 
33 
46 
48 
49 
4 
0 
46 
56 
0.50 
orf 
74.0 
30.196 
73.1 
73.7 
1 
46 
45 
46 
57 
19 
46 
51 
1.64 
25 | 
73.0 
30.185 
73.0 
73.5 
59 
49 
52 
50 
14 
0 
50 
3 
0.48 
72.0 
30.010 
71.5 
72.0 
1 
23 
25 
23 
38 
12 
23 
31 2 
1.60 
Clock door shut. 
2b < 
77-0 
30.060 
76.2 
76.9 
65 
58 
42 
58 
59 
17 
58 
50i 
0.28 
r 
79-0 
30.061 
79-9 
79-9 
1 
9 
1 
9 
19 
18 
9 
10 
0.98 
Lower shutter of the clock open. 
” 1 
82.0 
30.020 
81.6 
81.9 
21 
53 
29 
53 
45 
19 
53 
37 
0.58 
/ 
82.0 
30.019 
82.0 
82.0 
1 
0 
50 
1 
6 
20 
0 
58 
1.16 
” l 
81.0 
30.003 
80.4 
80. 6n 
32 
42 
30 
42 
46 
22 
42 
38 
0.52 
81.0 
30.002 
80.2 
80.4 
1 
53 
4 
53 
22 
22 
53 
13 
1.12 
79-0 
29.970 
78.8 
79-3 
25 
58 
15 
58 
33 
0 
58 
24 
0.66 
0- / 
74.0 
29.942 
74.0 
74.0 
1 
40 
47 
40 
55 
12 
40 
51 
1.83 
Lower shutter of the clock open during this 
2, | 
79-0 
29.965 
79-8 
80.1 
65 
15 
26 
15 
36 
18 
15 
31 
0.28 
day. 
r 
80.0 
29.975 
80.0 
80.1 
1 
21 
4 
21 
22 
18 
21 
13 
1.28 
The weather very favourable. 
”1 
80.0 
29-976 
80.6 
80.8 
28 
41 
54 
42 
12 
20 
42 
3 
0.58 
/ 
81.0 
29.976 
81.0 
81.3 
1 
47 
44 
48 
0 
20 
47 
52 
1.34 
80.0 
29-930 
80.0 
801 
29 
13 
43 
14 
1 
23 
13 
52 
0.60 
/ 
80.0 
29-928 
80.0 
80.2 
1 
23 
52 
24 
10 
23 
24 
1 
1.13 
n 
78.0 
29.962 
78.0 
78.5 
19 
57 
46 
58 
8 
0 
57 
54 
0.68 
Mean 
76.107 
30.034 
