ON SEISMOLOGICAL INVESTIGATION. 



201 



For the interruptions of cables on June 29, 1888, and July 10, 1890, 

 we have the assurance of those connected with their management that 



the cause was volcanic or seismic, whilst the actual or close coincidence 

 m. the dates at which the remaining interruptions have taken place with 

 the days on which earthquakes have been felt leads to the belief that 

 the Port Darwin — Java section has suffered more from the effects of 

 sudden sub-oceanic change than from any other cause. The European 

 recoi'ds of February 22 evidently refer to the disturbance which caused 

 the interruption on that date in Java between the hours 4-20h. and 

 16-20h. 



The above table is a list of the thirty-eight lines just discussed, 

 along which one or more cables are laid. Since these lines were esta- 



