103
Table I.—Continued.
Square Number.
Jan.
Feb.
Mar.
April. May.
June, July.
Aug. Sept. Oct. Nov. Dec.
96
2186
1993
2064.
2025
97
950
945
1109
970
1000
2359- 2325 2408 1110 1072
2304 2073 2248 2129 2056
1070 1083 1130 1162 1051
98
306
291
291
324
377
385 417
419
401
395
399
351
127
190
91
159
126
97
134
169
142
157
175
134
133
128
206
115
173
146
130
174
198
204
188
223
166
168
129
245
132
236
219
163
230
220
237
230
240
243
216
130
634
475
616
543
663
673
765
730
555
662
717
599
131
585
510
550
591
624
673
765
888
553
575
601
510
132
1807
1679
2212
2574
2926
2955
3271
3009
2713
2736
2631
1899
133
2
2
126
110
159
181
182
130
128
159
130
20
163
186
180
201
267
249
292
286
323
251
264
252
174
164
310
226
311
383
340
464
416
166
420
383
353
246
165
353
246
310
349
433
466
471
194
448
372
102
287
166
124
72
108
120
147
155
168
143
186
163
128
106
167
19
13
21
64
86
127
162
165
103
76
13
1
168
1
7
14
12
12
12
7
7
14
12
0
169
0
0
0
0
0
0
170
0
0
0
199
63
59
90
70
78
71
88
75
55
200
12
5
13
1
201
0
0
0
202
0
2
203
0
318
0
15
19
3
7
319
43
55
27
10
4
30
11
33
320
16
26
23
51
21
10
30
2
10
321
0
11
19
15
2
17
22
22
20
15
322
66
39
44
60
86
70
101
79
99
78
51
323
470
271
361
243
249
208
328
253
261
272
316
837
324
440
346
230
145
100
117
179
184
310
100
491
392
325
377
317
362
448
463
518
608
672
727
546
419
365
326
0
0
0
0
0
'1
0
0
0
0
0
23280
25081
24790 22816 23983 23139
20298
20778 18475 20872 20830 22506
"1
11. As stated in the "Instructions for making Meteorological Observations etc.' meteorological instruments forwarded by Observers who regularly send their registers to the Observatory are verified here free of cost. During the past year 1 barometer and 2 thermometers were verified. In addition, several hundred barometers and aneroids on board ship were compared with our standard. One azimuth compass was also verified.
12. Professors SHINJO, OTANI and YAYAYAMA, of the Imperial Japanese Geo- detic Commission, who were on a tour for the purpose of determining the constant of gravity and the magnetic elements at various places in the Far East, spent a fortnight at the Observatory in the spring, the magnetic hut being placed at their disposal for their work in Hongkong.
13. In 1903 the number of transits observed was 1,067. The axis of the transit instrument was levelled 217 times, and the azimuth and collimation errors, which are less liable to variation, were determined 10 times by aid of the meridiau mark. The whole of the observations have been made and reduced by Mr. J. I. PLUMMER, and are now ready for the press.
14. The standard sidereal clock by Dent continues to give complete satisfaction. It was cleaned and the rate altered on Deceinber 10. The platinum points of the contact springs have been twice cleaned, viz., on April 6 and November 18. The going of the Brock mean time clock continues to be very unsatisfactory. It was oiled anew on January 27, and several attempts have been made to bring its rate within reasonable limits, but have proved unsuccessful. The time-ball clock and the chronograph are both in good working order.
15. The errors of the time-ball are given below in Table II. The ball is not dropped on Sundays nor Government holidays. There was no failure in 1903. On six occasions the ball could not be hoisted, viz., on February 18 when repairs were being effected to the building, on July 14 owing to a thunderstorm, on July