Till': (iRE.vT luirniON of sakuiia-jima in 1914. 



141 



Fig. 28. — L.avti-sliield of the Yuno-liira vent, viewed southwest ward s from the 

 western slope of the North Cone. 

 . (Photo taken on Jan. 19th, 11 a.m., 1914.) 



mass of the western lava stream, which deployed in its downward 

 coarse like the linger of a hand and finally plunged into the sea 

 (PL XII. Fig. 3). 



Nos. 3 (?) and 5 {sse\\ 74, Text-fig. 19) are probably secondary 

 spatter vents broken open from the undercurrent of lava stream under 

 solidified shell. Whether No. 4 is a primary or secondary vent is 

 not clear to the writer, the balance being in favor of the former, 

 which is probably connected with No. 2 in its deep source. 



Generally speaking, the western vents are rather irregularly 



