ON SEISMOLOGICAL INVESTIGATION, 177 
ments, and he has found it possible to suppress their existence by regulating 
the temperature and draught in the room by four small kerosine lamps 
kept burning between 8 p.m. and 9a.m. The introduction of these lamps 
also results in giving the zero of the boom a fluctuation almost analogous 
to that observed in the diurnal wave. 
Excerpt from the Bombay Register. 
: | 
No. ie Date if cent ee! Maximum End Remarks 
1898. 
A. OM, 8. [as Me. Bi H. M, 8. 
1 | 232 | Sept. 13/ 18 53 28 _- 18 56 10| Thickening of line. 
2 | 233 » 22) 12 40 45 | 12 49 8 12 54 24) Eleven bead-like 
| movements. 
ay2st | 4, 25) 1218 37] 12 20 36 12 31 53 | Small disturbance. 
#} 235 | Oct. 11/17 2 36 | 17 36 42 | 17 48 57 | Earthquake. Amp. 
0'-78. 
5 | 238 ee Looe oedGo Ady |. SAG 24: 4 849) Earthquake. Amp. 
2'°03. Felt over 
Northern Bombay. 
6 | 239 |Nov. 17} 13 14 19 | 13 34 0 14 3910} Earthquake. Amp. 
3’”-80. 
7 | 240 » 80} 21 4°36 — (Dec.1) 3 49 25) Real movement 
| masked by feeble 
tremors. Also Dec. 
| 1 from 12h. 43m. 
l7s. 
8 | 2417?/ Dec. 8] 2 49 58 — = | Dislocation. 
9 | 244 syn 20) 28.1:5 -— (5th) 31558 | Movement masked 
by tremors, 
4.899. 
10 | 245 |Jan. 6] 19 13 40 — (7th) 4 43 34 | - ue 
11 | 246 svt | LOFAZs44 — (12th) 411 36) te i 
12 | 247 we el. 9) Sa 24 — — Dislocation with vi- 
| bration. 
13 | 248 USA IMS) SITY — (14th) 421 2 + Movement masked 
| by tremors. 
14 | 249 ase eet aD Ay — — | Dislocation W. with 
| vibration. 
15 | 250 3 ea Lab noo — == » ” 
16} 251 a OOP Lee DOUG PIB ro 18 15 28 Small disturbance. 
| 252 » 981) 12 23 20 — — Dislocation E. with 
vibration, 
18 | 253 » 81! 17 16 2) ~- — Thickening of line. 
19} 256 | Feb. 27} 10 42 20 — — Dislocation W. with 
vibration, 
20 257 ” 27 | 14 40 50 — a » ” 
21 | 259 » 28] 20 9 23 — = ” ” 
22) 263 |Mar. 7| 0 3 47 — 13113) Tremors mask the 
real record. 
23 | 264 3) 12 ):10 32 41 oo _- Thickening of line. 
24 | 268 Pee! Le? 30) [LL 4 46 12 22 4) Small disturbance. 
8. India: Calcutta, Alipore Observatory. 
G. W. Kicuinr, Assistant Meteorological Reporter. 
At the above Observatory, in consequence of an indifferent foundation, 
dampness, the presence of insects, and from other causes, great difficulties 
have been met with in working the instrument. These to some extent 
1899. N 
