ON SEISMOLOGICAL INVESTIGATION. 



201 



noted in Tokio. The time at which it originated is therefore 7 hrs. 36 mins. 

 On this assumption the following table has been calculated : — 



No. 84, February 7, 1897. (B.A. Report, 1897.) 



H. M. S. 



Shide 23 54 50 (Corrected) 



Potsdam' 23 52 



No. 85, February 13, 1897. (B.A. Eeport, 1897.) 



H. M. S. 



Shide 2 8 11 



Potsdam 250 



Rome , ■ . 2 5 50 



Nicolaiew 2 (i 1 



Edinburgh 2 3 12 



Strassburg 2 31 54 



Not recorded at Catania, Ischia, and Rocca di Papa. 



No. 86, February 13, 1897. (B.A. Report, 1897.) 



Shide . 

 Potsdam 



H. M. s. 



15 23 36 Duration 

 15 18 



M. S. 



9 20 



No. 87, February 15, 1897. (B.A. Report, 1897.) 



H. 



Nicolaiew .......... 22 



M. 



12 







Edinburgh 22 17 



Potsdam 22 20 



At Shide on the night of the 15th-16th there were intermittent 

 switchings of the boom. 



February 19, 1897. 

 At Shide instrument not working. 



Padua . 

 Verona 

 Rome . 

 Ischia . 

 Catania 



Rocca di Papa 



H. M. S. 



20 51 23 



20 58 Pendulum (Vicentini) 



20 59 50 



21 1 25 Period reached, 22-6 sees. 



21 5 25 N.E.-S.W. component. Period reached, 32 sees. 



21 6 42 S.E.-N.W. 



21 11 



