VOLCANIC EARTHQUAKES 99 
Kilauea and Mauna Loa, and was certainly felt in the island of 
Kauai, about 350 miles from the epicenter, or probably over an 
area of 375,000 square miles.’ 
e/ 
/® Kirishima 
/ 
if 
/ 
Be Sakura-jima 
Scale of Miles 
y Suwanose 
Fic. 1.—Map of volcanic chain in south Japan * 
It is of some consequence to decide whether such earthquakes 
should be regarded, as they would be under Professor Omori’s 
definition, as volcanic earthquakes. The course of the volcanic 
« See an admirable paper by H. O. Wood, ‘On the Earthquakes of 1868 in Hawaii,” 
Bull. Seis. Soc. of America, Vol. IV (1914), pp. 169-203. 
