THE GliE.Vr ElîUrTION OF SAKUJîA-JIMA IN 1914. 



143 



Pig. 29. — Activity of No. 5 vent on the slope of Nabé-yama, as seen sonthwest'nards 

 from the Ebino-ziika hill. (Photo taken on May I7th. 1914.) 



brotherly sympathy when tlie writer was there in April, 1!)15. 

 On the second visit (in April, 1914), the writer saw, greatly to his 

 surprise, a gaping fracture opened between Nos. 4 and 5 on the 

 southern shoulder of the pumiceous Nabé-yama homate (PL XI. 

 Figs. 1 and 2), and two tongues of lava ran down northwards. 

 No. 5 was a pecuhar epigonic lava venthole (Text-figs. 19 and 24), 

 habitually standing in apathy to the others and remaining silent for 

 long hours, spasmodically awaking with extraordinary violence and 

 sharp detonations. During the writer's second trip, this bocca was 

 active once a day, and was the most treacherous and dangerous 

 one to approach (Text-fig. 29). 



The writer is unable to offer any satisfactory ox- 



Mechanism 



OF THE 

 SaKDRA-JIMA Ij- n t • f»n j !• 



Eruption planatiou OU tlio mecliauism 01 the recent volcanic 



