ox THE EARTHQUAKE AXD VOLCANIC PHENOMENA OF JAPAX. 



1G5 



and the time at which maximinn motion was experienced at the various 

 stations. 



The dotted lines connect similar points for the commeiiceiiifiti of the 

 disturbance. The time of these commencements undoubtedly varied with 

 the sensibilities of the recording instruments, and therefore it will be 

 noticed that they have only been taken into account for Rome, Xicolaiew, 



Fig. 15. 



Km 



and Strassburg, where records were obtained from the great pendulum of 

 the Collegio Romano, or from the horizontal pendulums of Dr. E. von 

 Rebeur-Paschwitz. 



The principal object in reproducing this series of observations is to see 

 if there is any reason for believing that there is any variation in the 

 velocity with which a given disturbance is propagated. 



