220 ART. 3. — B. KOTÔ : THE GREAT ERUPTION OF SAKURA-JIMA. 



On the whole, it is remarkable and quite astonishing to find 

 among éjecta all the lithologie members of the snbcrust on which 

 stands the volcano Sakura-jima. So far as the writer's knowledge 

 goes, none of the substrata are omitted, and all are faithfully re- 

 presented in the recent projectiles, so that we can read in them 

 the geologic history of the underground of the region concerned. 

 Lastly, the only one exception is the find of coal (p. 219) which 

 is, however, of dubious origin. 



In closing the present treatise, the writer becomes aware of 

 the fact that he has perhaps laid too miicJi stress on melting, 

 stoping and gas-fluxing in contrast to hydrostatic pressure as to 

 the mode of the ascension of the magma (p. 144). On seeing the 

 multiplicity of the éjecta of subcrustal origin, the eruption seems 

 to have started at first with a new rupture backed by gaseous ex- 

 plosion, partly outside of the old conduit, whereby all the lithologie 

 members of the foundation of the volcano were blown up through 

 the virgin vents. 



