144 ART. 3. — B. KOTÔ : 



activity (p. 137) ; therefore lie betakes himself to the realm of 

 imagination. While in the field he was frequently reminded of the 

 hypothesis of satellitic injection with which Daly'^ explains the in- 

 different behavior of Kilauea and Loa. 



In Sakura-jima it was, however, bilateral satellitic injection 

 (Text-fig. 30). For the duration of a full twelve months before 

 the event at Sakura-jima, subterranean agitations, expressed in the 

 earthquakes and the unusual attitude of the volcano Kirishima, 

 were felt in southern Kyi'ishii, to release the sti-ain from an unstable 

 isostatic equilibrium of the earth's supercrust. Lastly, a point of 

 release was discovered in the old crater conduit of the south cone 

 of Sakura-jima. 



Pig. SO. — Bilaternl iujection-chamber in Siikura-jima. 

 (Horizontal and vertical relief in natural scale). 



Wolff {loc. cit.) says the local lava reservoir lies about 1,000 ?7i. 

 from vent (Text-fig. 30), and on this assumption the lava basin of 

 Sakura-jima will be reached at 700 m. below sea level. Driven 

 np by hydrostatic pressure in conjunction with the liberation of 

 gases which would have increased internal pressure and con- 

 sequently adiabatic heat, besides that of new chemical recombina- 

 tion, the lava ascended through channels up to half the height of 

 the volcano by stoping, melting and gas-fluxing. Being unable to 



1) • The Katnre of Volcanic Action.' Proc. Am. Aaid. of Arts and Sciences, Vol. 47, Jiüy, 

 1911. His diagram is inserted in Wolff, 'Der Vulkanismus,' Bd. I. S. 336. In Paly's own 

 later -work, ' Igneous Eoc-ks and Their Origin,' it is not reproduced. 



