394
6
Table IV.
Errors of Time Ball in 1892.
means too late.
+ meaus too early.
Date.
Jan.
Feb.
Mar.
Apr. May.
June. July. Aug.
Sept. Oct. Nov. Doc.
1,
2,
3,
+0.2
4,
+0.2
+0.4
6,
0.1
38 ::
323338
0.1
-0.5
0.1
0.1
0.1
-0.3
-0.5
0.1
0.1
0.1
0.1
-0.2
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
-1.1
0.1
0.1
0.1
0.1
-0.3
-1.3
0.1
0.1
-0.4
0.1
0.1
3333333
0.1 -0.2
0.1
-0.3
0.1
-0.2
0.1 -0.5
ဗုံး
0.1
0.1
0.1
-0.3 -0.3
0.1
0.1
-0.4
0.1
0.1
0.1 -0.5
0.1
0.1
0.1
0.1
0.1
0.1
8,
0.1
0.1
— 1.4
0.1
+0.2
0.1
0.1
0.1
0.1
0.1
0.1
9,
0.1
0.1
- 1.5
0.1
0.1
0.1
0.1
0.1
+0.2
0.1
0.1
0.1
10,
0.1
-0.2
-1.6
0.1
0.1
0.1
0,1
0.1
+0.2
0.1
0.1
0.1
11,
0.1
0,1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
12,
0.1
0.1
+0.2
0.1
0.1
0.1
0.1
-0.2
-0.2
-0.2
0.1
13,
0.1
0.1
0.1
+0.2
0.1
0.1
0.1
0.1
-0.3
-0.3
-0.2
-0.3
14,
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
-0.4
0.1
-0.3
-0.2
15,
0.1
0.1
-0.2
0.1
0.1
0.1
0.1
-0.5
0.1
-0.3
-0.6
16,
0.1
0.1
~~~0.5
0.1
0.1
0.1
0.1
0.1
-0.2
0.1
-
-0.9
17,
0.1
0.1
-0.7
0.1
0.1
+0.2
0.1
0.1
0.1
.0.3
0.1
0.1
18,
0.1
0.1
0.1
0.1
+0.3
0.1
0.1
-0.2
0.1
0.1
0.1
19,
0.1
+0.2
-0.2
0.1
0.1
+0.4
0.1
+0.2
-0.3
0.1
0.1
-0.2
20,
0.1
+0.2
-0.3
0.1
0.1
+0.4
+0.2
0.1
-0.3
0.1
0.1
0.1
21,
0.1
-0.5
0.1
+0.2
0.1
0.1
0.1
-0.4
+0.2
0.1
0.1
0.1
+0.3
-0.2
+0.2
0.1
0.1
-0.2 -0.4
+0.2
0.1
0.1
0.1
0.1
0.1
+0.4
+0.2
0.1
0.1
0.1
-0.2
0.1
0.1
0.1
0.1
0.1
+0.3
0.1
0.1
0.1
0.1
-0.5
.0.2
+0.3
0.1
....
0.1
0.1
0.1
0.1
0.1
20.1
0.1
0.1
0.1
+0.4
---
+0.2
0.1
0.1
+0.3
0.1
0.1
0.1
0.1
-0.2
0.1
+0.5
0.1
+0.2
0.1
0.1
+0.6
:
0.1
+0.2
0.1
-0.3
0.1
-0.5
+0.2
0.1
0,1
-0.3
0.1
-0.3
0.1
+0.2
0.1
0.1
0.1
-0.4
0.1
0.1
0.1
-0.4
0.1
-0.3
0.1
+0.2
0.1
0.1
0.1
0.1
0.1
0.1
-0.4 -0.3
0.1
0.1
0.1
0.1
0.1
-0.2
0.1
0.1
-0.2
0.1
0.1
0.1
0.1
0.1
22,
23,
24,
25,
26,
27,
28,
29,
30,
31,
18. An extension of the main-building is urgently required as the Observatory is not nearly of the dimensions recommended by General H. S. PALMER, R.E., twelve years ago. In fact, the building was not hitherto properly finished, the pendant to the west to correspond to the transit-room towards the east not yet having been built. There is a drawing of it in the Office of Public Works, constructed by Mr. J. M. PRICE, the architect, who built the Observatory. Besides my private apartments and the laboratories, most of which are too small, there is only one office for the accommodation of the whole staff. It is 13 feet broad and 20 feet long. The telegraph and telephone apparatus are in the same room. There are often six officials working together, the same room being occupied almost constantly day and night. In a climate like this such overcrowding is undesirable. In other depart- ments the different foreign officials have each a separate office apart from the natives. In order to carry out the investigations printed in Appendix B I had to give the assistants the use of my dining- room, although that caused me very grave inconvenience and some expense.
19. Some of the principal duties of the staff are distributed as follows, the number of hours during which each official attended during the year being added in parenthesis :--
Mr. J. I. PLUMMER, Chief Assistant, (1853 hours), makes astronomical and magnetic observations, the latter under Mr. FIGG's superintendence,-regulates clocks and copies ship-logs.
Mr. F. G. FIGG, First Assistant, (2047 hours), attends to storm-warnings and investigations of typhoons. He teaches all the other assistants and does any work which is too difficult
for them.
Miss A. DOBERCK, Assistant Meteorologist, (883 hours in half a year) issues weather-forecasts and daily meteorological registers, and attends to meteorological observations and tabulations.
Mr. Ho TOSHANG, Second Assistant, (1936 hours), hoists and sets the time-ball and attends to the continuous records and the construction of the monthly and annual reports, in which he is assisted by two native clerks, one (2048 hours), of whom besides attends to electric, and the other (2083 hours), to photographic work.
20. Observations of magnetic declination and horizontal force were made with the unifilar mag- netometer, Elliott Brothers, No. 55, and the dips were observed with dip-circle, Dover No. 71. Some deflections which were badly observed were excluded and are printed in parenthesis.
The methods adopted in making the observations and in determining and applying the corrections are explained in Appendix G. of Observations and Researches made in 1885: "On the verification of