102 



SCIENCE PROGRESS 



whole mountain-slope over Yokoyama into one continuous 

 zone of red-hot masses from top to base. This was due to the 

 first outflow of the lava-streams. 



On January 25 the eruptions on the west side of the island 

 came practically to an end. Those on the east side continued 

 for some time longer, and, even as late as the following August, 

 there were occasionally strong outbursts. 



The positions of the craterlets in action during this eruption 



r-% 



Kita-dake 



Hikinohlra' 



;*\ 



I t 



jpJP 4 



D 



Fig. 2. — Sakura-jima and its recent lava-streams. 



are shown in fig 2. They lie along a line running from E.S.E. 

 to W.N.W. through the Minami-dake or south crater. This 

 line, however, is not absolutely a new one, for it is almost 

 identical with the much older line passing through Nabe-yama, 

 Hikinoshira, and the islet of Karasu-jima. 



Lava-Streams. — Lava was ejected from seven principal 

 craterlets on the west side of the mountain and from eight on 

 the east side, the altitudes of the highest being about 1,640 and 

 1 ,300 ft. respectively. 



