a 
ON SEISMOLOGICAL INVESTIGATION. 197 
times he noted. ‘The time for the particular earthquake here considered 
would, therefore, be 7h. 19m. A.M. : i 
With this assumption we obtain the following table of velocities :— 
| Time of travel | Distance Velocity of 
— |. -— -- —————— = —|L.W.’s in kms. 
P.T.’s | L.W.’s | Degrees | On Are per sec. 
Shide : ¥ é .| 29m. | 34m. 15° 8325 kms. 4:0 
Nicolaiew : " . | 35m. Otero TOTO & 4-4 
Rocca di Papa . ‘ BA) Bates 435m eH S982 ors OTGR ae 37 
Potsdam . : ; - i MEG ion | acaba» athe 8769 ,, 3:8 
Toronto . P ‘ Tia ||) Sms) op as2e BEA 7:0? 
These velocities are distinctly too high, and as the time of arrival of 
the large waves in Europe is fairly accurate, we must conclude that the 
shock originated earlier than the time here assumed. For this reason, 
and for the reason that the times of arrival of the preliminary tremors in 
Europe do not appear to have been accurately noted, the velocities of 
these precursors have not been calculated. 
No. 192, April 25. 
ae Oe M. om <'s: 
Shide F 3 wR eat suuae: Lyf 3 By 4 ie Mest 6(0) 
Potsdam . F Se ee ye(0) — 9 120 
No. 193, April 22-25. (Origin, N.-E. Japan.) 
| | Dura- 
Locality prea ail ae | Maximum Remarks 
| P.T.’s 
ese Soe Geo M. 
Shide. : : .| 23 58 55 25 | O 31 12 |Commencement earlier 
Rocca di Papa . .| 23 48 40 3 | 0 23 0 — 
Ischia ; F aa) Zak 30) “0 —_— | — — 
Catania. : .| 23 48 58 — 0 33 47 == 
Toronto . : .| 23 59 50} 25 Ose e 26 _ 
San Fernando . . | 23 59 61 20 0 36 36 ss 
Potsdam . ; ehezon ol) <0 — — — 
Micdiaiewer ss 3 28 47 0 |’ —., | 28 58 oO she 
Tokio. c : a —- —- 23). °33 
49 = 
We have here the case of a large earthquake which reached Toronto, 
Shide, and San Fernando (Spain) and other places at about the same 
time. 
The following accounts of this disturbance are taken from newspapers 
published in Japan :— 
‘The sharp shock of earthquake which was felt at Yokohama and 
Tokio on the morning of the 23rd instant was not unattended with 
accidents in the north-eastern districts. At Maizawa-cho, Iwata Pre- 
fecture, a house was thrown down ; at Nanamiki-cho fissures were pro- 
duced in the ground at various places ; at Satokawaguchimachi a house 
was damaged, while the premises of the Kuji Police Station were also 
affected. At Sanumo, Miyagi Prefecture, two persons are reported to 
have been injured, while houses and godowns were damaged. At Sendai 
