Period.
5
Table III.
Rate of the Brock Standard Mean Time Clock in 1892.
7=+2o.60—0o.075 (7—75°) +0.0020 (t−July 1)
Observed rate
Temp.
↑
То
3.
O
Arc.
Calculated rate.
a
s.
393
December, 27-January,
6,
+ 2.48
72.8
4 12 36
+ 2.41
+ 0.07
January,
وو
16,
+ 2.77
70.1
4 12
18
+ 2.63
+ 0.14
16-
*
"
26,
+ 2.87
70.6
4 12
6
+ 2.61
+ 0.26
26-February,
5,
+ 2.51
71.7
4 11 18
+ 2.50
+ 0.01
February, 5-
"
15,
+ 2.68
70.6
9 48
+ 2.65
+ 0.03
•
15-
25,
+ 2.54
70.7
9 30
+ 2.66
-
- 0.12
53
25-March,
6,
+ 2.49
71.5
4
8 42
+ 2.62
- 0.13
March,
6-
99
16,
+ 2.47
71.0
4
9
6
+ 2.68
- 0.21
16-
"
37
26,
+ 2.62
71.5
4
8 36
+ 2.66
"
26-April,
5,
+ 2.63
71.9
00
8
+ 2.65
-
April,
5—
32
15,
+ 2.41
74.9
8
48
+ 2.45
0.04
– 0.02
- 0.04
15-
39
25,
+ 2.25
77.1
4
8.36
+ 2.30
-0.05
25-May,
5,
+ 2.05
79.9
4
8 36
+2.11
0.06
May,
5—
15,
+ 2.07
80.7
00
8
42
+ 2.07
0.00
15-
""
+7
25,
+ 2.13
79.9
8
6
+ 2.15
-0.02
14
25-June,
4,
+ 1.85
85.8
4
4
0
+ 1.73
+ 0.12
June,
39
14-
24-July,
4-
A
14,
+ 2.07
84.6
3
>>
24,
+ 1.97
85.0
3
མ་གྲྭ
57 48
58 12
༣ས
+ 1.84
+ 0.23
+ 1.83
+ 0.14
4,
>"
v
J
15
July,
14-
24-August,
August, 3-
+ 1.97
85.2
3 57 48
+ 1.83
+ 0.14
4-
14,
+ 1.97
86.3
3 58 0
+ 1.77
+ 0.20
"
24,
+ 1.76
86.9
3
57 54
+1.75
+ 0.01
3+
+ 1.82
86.0
3 58 12
"
13,
+1.87
86.7
3
57
2 6
+1.84
0.02
+ 1.80
+ 0.07
13-
19
"
23,
+ 1.78
85.2
3 58 42
+ 1.93
- 0.15
23-September, 2,
+ 1.86
83.3
4 0 6
+ 2.10
· 0.24
September, 2-
"
12,
+ 1.93
83.0
3 59
0
+ 2.14
0.21
12--
"
22-October,
October, 2-
22,
+ 1.97
83.5
3 58 48
+ 2.12
- 0.15
2,
+ 2.16
81.0
3 57 48
+ 2.33
- 0.17
12,
25
+ 2.29
81.5
3
57 42
+ 2.31
-0.02
12-
A
22,
+ 2.58
79.2
3 55
48
+ 2.50
+ 0.08
"
22-November, 1,
+ 2.79
75.2
3 55
36
+ 2.82
―
- 0.03
November, 1–
11,
+ 2.88
75.2
3 55 24
+ 2.85
+ 0.03
11-
3
12
21,
+ 2.71
78.6
3 55 12
+ 2.63
+ 0.08
21-December,
1,
+ 2.87
76.1
3 54 54
+ 2.82
+ 0.05
December, 1-
*
11,
+ 3.23
71.5
3 57 24
+ 3.18
+ 0.05
11-
"
21,'
+ 3.95
69.5
21-
31,
>>
"
+ 3.84
70.0
3 57 12
3 58 о
+ 3.35
+3.34
17. As stated in the time-ball notice published in the Government Gazette on the 10th January, 1885, the time-ball is not dropped on Sundays or on Government holidays. It was, however, dropped also
on Sundays in 1892, except when any assistant was sick or absent on duty or leave. On the 3rd, 4th and 5th of March, the apparatus was under repair and the ball was not hoisted. On the 22nd April, a thunderstorm raged in the neighbourhood. On the 2nd May, a wire in the lock was found fused by lightning. On the 11th of May, the line was out of order. On the 16th June, a thunderstorm was raging. On the 8th of August, the key of the tower was forgotten. On these days the ball was not hoisted. On the 23rd November, the ball failed to drop, the tooth of the lock being so worn that the piston would not rest on it. The ball was therefore dropped 345 times, and failed once in 1892:-
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