THE GREAT ERUPTIOX OF SAKUIÎA-JIM.V IN 1914. 77 



lioiir at tliis moment, burying a part of Yokoyama and ^Vkamizu, 

 leaving on the shore a margin of only about 200 m. (Text-fig. 19). 

 The southern arm of the flow was then just on the top of the 

 Atago shrine (see Geologic Map), 167 m. high, having an appea- 

 rance as if another move would produce a cataract of fiery lava 

 (Text-fig. 20). 



,j,jjg j-^jj The scene during the night presented an interest- 



. iGHT • j^g spectacle to the writer, as seen from the city on 



the opposite coast at a distance of 6 hn. The lava stream from 

 the Yunohira vent (Text-fig. 19, Xo. 2) appeared in a dark-red 

 band ; the two lower vents. Nos. o and 4, looked Hke orifices of 

 glowing gigantic furnaces, and the main venthole of Yunohira was 

 constantly throwing out dark smoke and red-hot splinters like 

 sparks from a blacksmith's fire. Sounds not unlike waves on a 

 stormy coast were periodically heard. 



During the whole day and night, the active Kirishima, the 

 northern neighbor, was in full view, and remained in perfect 

 silence ; not even a trace of cloud was observed. 



Little was known of the back mountain — the 



Eastet.n 



^ ENTs N a b é - y a m a vents. At 3 a.m., they became quite 



active. The two upper vents. Nos. 2 and 3 in Text-fig. 19, were then 

 in full force. The lava pouring forth from them ran down in two 

 streams, the western branch buried Arimura and Waki, and the 

 eastern the village of Séto (Geologic Map), leaving scarcely 10 in. 

 of shore margin from the water. Concerning the velociti/ of the 

 Nabé-yama flows we have no data to attempt a calculation ; but 

 they probably moved faster than the western on account of their 

 being less viscous from their comparatively basic nature. The 

 form of the eastern lava-field correspondingly deploys at the end, 

 as in Text-fi"r. 19. 



