Fig. 4. The Earthquake of April 3rd, 1898; NS component. (Recorded by Omori's Horizontal 

 Pendulum.) Multiplication 10 times. 



Jour. Sc. Coll. Vol. XI. PI. XVI. 



•JyyrfK^ll^'^^lyJ^^Y^Aw'^V■^^''-^ A..Mr>^'^ 



N 



Time scale 



-| minutes. 



Fig. 5. The Earthquake of April 3rd, 1898; EW component. (Recorded by the long-period 

 Horizontal Pendulum Seismograph.) Multiplication 6è times. 



Beginning. 

 The diagram is for economy of apace shown in two portions, I and II, a and b' of I being directly 

 continuous resj^eotively to a' and b uf U 



End. E 



Time scale. 



4 b 7 8 9 10 



seconds. 



