140 



F. ÖMORI. 



removed by the e.iithquake of October 28th, ISDl, has been affected 

 by the severe shocks mentioned above. It may be that the latter tract 

 is still to be disturbed in future by a few such shocks, wliich, however, 

 will then be of only secondary magnitude and not so violent as to 

 destroy houses. 



Soon after the great eartliquake of October 2(Sth, 1(S91, temporary 

 seismological observatories were established at Ogaki and Midori to 

 cooperate with the ^Meteorological Stati(jns of Gifu and Nagoya. I 

 have myself passed, in the latter part of Xovember and the early 

 })art of December, l<Si)l, several days at Midori and Okawara, the 

 latter of which is a small vilhige about 5 /■/ to the NNW of the former. 

 Again the town of Gifu is about 7 ;■/ to the 8ISE of Midori, Avhich is 

 in the central [)art of the Neo- Valley, where remarkable faults have 

 taken place. In the following table are compared the dailv numljcrs 

 of earthquakes I have recorded at Midori and Okawara with those 

 observed at Gifu : — 



