CAUSE OF EFARTHQUAKES—HOBBS 265 
applies, therefore, to those sections of the girdle which are farthest 
removed from regions of recent relief. 
Earthquake prediction—Upon this assumption after the Cali- 
fornia earthquake in 1906, Professor Omori predicted on August 4, 
Geosynclines of Mesozoic era 
eG EN Bp - 
« Epicenters of Earthquakes 1899-!910(Milne) 
Association, but transferred to the Mollweide projection 
Approximate boundaries ofareas which have sunk since late Mesozoic time. 
.—World map of earthquake distribution for the period 1899-1910, made from data assembled by the British 
-_--= 
Si wo aes 
’ 
‘ 
Ons; 
Be 
5 
Fic. 
1906, just before he sailed for Japan that the next earthquakes 
within the circum-Pacific girdle would probably occur south of the 
equator— in South America. Before his ship had reached Japan 
