TABLE I.
Rate of Sidereal Standard Clock in 1887.
Period.
Rate.
Temp.
Bar.
Period.
Rate.
Temp.
Bar.
December 31-10,..
-2.$12
62.o3.
30.02
January
10-20,.
-2.23
63. 3
29. 98
June July
29- 9,
-3.573
82.°1
29.70
9-19,
-3.84
82.8
29. 62
20-30,..
-2.20
61. 6
29. 92
19-29,.
-3.97
81. 4
29. 47-
"1
"
30- 9,
-2.18
59.4
29. 95
23
February
9-19,
-2.05
60. 4
30. 15
August
29- 8,. 8-18,.
-3.96
$3.3
20. G3
- 3.91
81.8
29. 73
19- 1,
-2.28
62.3
29. 94
39
57
18-28,..
-3.92
79.9
29. 70
March
1-11,
-2.32
61.3
29. 97
28- 7.
-4.04
81. 8
29. 74
55
11-21,
-2.36
61.3
29. 95
"
September 7-17,
-4.23
83. I
29. 54
"
21-31,
-2.34
62.7
29. 94
55
17-27,
-4. 25
82.3
29. 69
31-10,.
-2.48
67.0
29. 94
"J
27-7,-
4. 12
79.8
29. 76
27
April
10-20.
-2.91
73.1
29. 77
October
7-17,
+0.51
78. 5
29. 91
20-30,
-2.78
69.7
29. 89
"
17-27,
+0.60
75.9
29. 93
30-10,
-2.93
72.1
29. 79
"
27-6,.
+0.81
73. 1
29. 99
May
10-20,.
-3. 11
74.6
29. 79
November 6-16.
+0.79
71. 7
29. 97
20-30,.
- 3. 33
78.0
29. 75
**
16-26,
+1.00
69.3
30. 06
19
30-9,.
-3. 49
79.8
29. 69
26-6,.
+1.01
68. 1
30. 01
"
June
9-19,.
-3. 72
82.7
19-29,
-3.78
83. 2
29. 63 29. 68
December 6-16,.
+1.14
67.3
30. 04
**
16-26,.
+1.17
65. I
30. 05
A
10. As stated in the time-ball notice published in the Government Gazette on the 10th January, 1885, the ball is not dropped on Sundays or Government Holidays. The ball was dropped every working day in the past year, but failed to drop at 1 p. on May 27th, June 25th and October 27th, the failure being caused the first time by a broken covered wire in the polarized relay, the second time by the switch not having been properly turned, and the third time by the battery having become weak in comparison to the elasticity of the spring on the lock. On every occasion the defect was remedied and the ball dropped allright at 2 p.
TABLE II.
Errors of Time-Ball in 1887.
means too late.
+ means too early.
Date:
Jan. Feb.
March. April. May.
June. July. Aug.
Sept. Oct. Nov. Dec.
I,
2,
+0.3
0.$1 +0.'6 +0.3 0.1
0.'1
0.o1
0.1
0.51
0.$1 +0.2
0.1
0.$1
0.1
0.1 0."1
0.1
-0.2
+0.3
3,
0.1 +0.4 -0.2
0.1
0.1
0.1
0. I
0.1
-0.5
+0.3
0.1 +0.4
-0.3
0. 1
+0.2
0.1
0.1
0.1
0.1
0.1
AN
0.1 +0.4 -0.3
0. I
0.1
0.1
0. I
0.1
0.1
0. I
0.1
0.1
0.
0.1
+0.2
0.1
0.1
0.1
-0.2
0.1
0.1 +0.7
0.4
0.1
0.1
+0.3
-0.2
0.1
-0.3
0.1
-0.3
8,
-0.2
9.
+0.9 0.1
-0.4
0. 1
-0.2
0. 1
+0.3
0. 1
+0.2
-0.4
0. +0.2
+0.5
+0.3
0.1
0.
+0.5
0.1.
10,
-0.4
-0.3
0.
0.1
+0.5
0.
+0.2 0.1
+0.3
11,
+0.3
-0.5
0.1
+0.2
+0.7
+0.
0.
0.
-0.3
12,
+0.6
-0.8
0.1
+0.7 +0.3
0.
0.
+0.6 0.
-0.3
0. 1
13,
+0.9
+0.9 +0.5 +0.5
0.
0.1
+0.7
0.
-0.2
14,
0.1
0. I
0.1 +1.2 --0.2
0, 1
0.1
0.1
+0.2
0.1
-0.2
15,
0. 1
0.1
0.1
+0.7
0.1
0.1
0.1
-0.2
{}.
0.1
-0.3
16,
T
-0.2
0.1
0.1
-0.3
+0.2
0.11 0.1
0.1
0.1
-0.3
17,
0.1
0.1
0.1
0.1 +0.2
-0.2
0.1
-0.2
0.1
0.1
18,
0.1
0.1 +0.2
+0.5
0.1 +0.3 +0.3 -0.2
0. 1
0.1
19,
0. I +0.2
+0.2
0. I
0. I
+0.4 -0.3
0.1
0.1
-0.2
0.1
20,
0. I
+44
0.1
0. I
0.1 +0.5
0.1
0.1
-0.2
0.1
21,
0.1
+0.4
0.1
0.1
0.1
+0.6
0.1
0. 1
0. I
0.1
22,
0.1
+0.7
0.1
-0.4
0.1 +0.2
0. 1
0.1
0.1
0. 1
0.1
23,
+1.0
-0.2 -0.5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
24,
0.1
-0.3
0.
0.1
0.1
+0.2
0.1
0.1
25,
+0.2 +0.3
0.1
-0.7
-0.2
0.1 +0.2
0.
0.
26,
+0.2
0.1
0.1
0.1
-0.3
...
0.
+0.2 +0.1
0.1
0.1
27,
+0.2
0.1
0.
0.1
0.1
+0.
+0.5
0.1
28,
+0.2 0.1 +0.3
-0.2
+0.2
0.
0.1
0.1
-0.2 +0.4
-0.2
29,
+0.3
0.1
+0.2
0.1
0. 1
0.1
-0.3
0.3 0.1
-0.3
30,
31,
+0.2
0.1
0.1
+.0.2
0.1
-0.4
+0.2
-0.4
+0.3
+0.4
+0 8
0.1
0.1
-0.5