ON SEISMOLOGICAL INVESTIGATION. 
163 
THE SHIDE REGISTER—continued. 
Time of Com- 
No. Date sratrneenTine Remarks 
H. M. S 
179 | Mar. 28} 17 44 28 | Amp.-5bmm. OD 4m. 
Dey Gos i ae ae a ae . 3m. 
yee ase? P1821 6 Bt athe? br Ay 
Fiera 23.44 5 ie ODI a yy 
180 5 28 0 511 | Sulier 
eae 20 13 33 O This is ‘the first of at least 28 distinct disturb- 
we 29 1529 30* ances, with durations of from 2 to 6 minutes. 
e289 15 46 36 ‘Those marked with an asterisk commenced 
» 29 | 15 49 48 gently, and the others abruptly. The largest of 
ee 29 15 56 12* the series is that at 15h. 56m. 12s., which has 
a | 29 16 13 16 an amplitude of lmm., and a duration of 7m. 
a 29 16 39 18 Other marked members in the series are at 
a 29 16 53 32 15h. 29m. 30s., 17h. 23m. 2s.,and 18h. 54m. 33s. 
hale 17 3 42 Many of these are of doubtful character. 
2g 17 18 52 
eae cy 17 15 54 = 
eee: 17223) 42% 
"29 17 27 6 
Baoan Ligeoerou 
soe 29 18 12 51 
oy ae 18 27 6 
» 29 | 18.54 33* 
f. 29)|'. 19535) 14. 
g 89°) -19 138° 17 
Pe es) 20 12 51 
wy eo! || 6208276 
mee) 20 30 9 
ss «628 |) 21 56) 35 
yin HES, 22 1 40 
» 29| 22 8 47 
» 29°| 24.43 22 
» 29} 22 51 30 
eae) 23 0 39 
181 » 380] 12 7 O | Amp. Imm. D 6m. 
182 ok 8 21 1 | Maxima at 5°7, and 11m. later. Amp. Imm. 
D 24m. 
183 ay) mall 11 24 56 Doubtful. Amp.‘5mm. D 10m. 
184 Feral 13 15 42 The first of a series of 22 very slight shocks, 
ending at5p.M. Greatest amp. 1mm. 
= 31 13 45 12 i 
ny trl 13 59 26 
9 31 14 15 42 
185 | April 3 7 38 35 | Amp.*'mm. D 10m. 
186 < 45) 1 42a , ‘25mm. |,, 5m. 
js; 4 12 24 53 +> Dam. hese 
ae eoyag: s » 25mm. 
187 5 | 14 30 O | From 13°30 to 15-30. About 12 small disturb- 
ances; each commences suddenly. The one 
at 14-30 has 2 max. each ‘5mm. D 8m. 
188 7 6 | 12 3717 | Ten min. latera max.amp.2mm. Small P.T.’s 
6m. D 35m. 
189 a lle 7 47 55 | Six min. later a max. amp. 2mm., 7m. still later 
another, max. l‘bmm. D54m. Small P.T.’s 
4m. 
190 » 15) 2215 31 | Amp.-Smm. D 3m. 
191 3 Gs 17 51 31 
” Bb) ” ” 
M 2 
