-.iH 'I ' 



246 



!n:roiiT — 1884. 



earthquakes which are seen to bo in the north and south comiionents of 

 motion, their perious in seconds are as follows : — 



IViioiIs ill Seconds 



The maximum amplitudes or half semi-oscillation in millimeters 

 measured in the north and south components, are as follows : — 



Aniiilitiules in Millinietcr.s 



On the assum])tion of harmonic motion the mnximum velocities in 

 millimeters jjor second calculated from the ;il)ovc periods and amplitudes 

 are as follows : — 



Ma.xiiniim Vclofitics in Milliiiiotors jipv second 



The maximum acc'^^'^'ation in millimeters per second calculated from 

 the maximum velocities and amplitudes, is as follows :- - 



Maxinmin Am^Icration in MillimottTs per .-iecoiid 



18.S!. 

 Date of Eaithrjuakc 



March 2G 

 Maroh 31 

 April G 

 ]May 6 

 May 11 



Station 1. 



1-4 



;{12 



:50-2 

 20-3 



I Station II. 



Station III. 



i:{^7 

 18 

 10' I 



