The eruption oi 1 bandai-sax. 147 



mirably carried out. We are glad to say that our measurements' and 

 those of Lieut. ïsfakashima agree well ; some difference existed in 

 regard to the heights of crater- walls, but this was more reasonable 

 than otherwise, as they were daily being reduced in altitude by the 

 falling in of the perpendicular edges and steep prominences. 



The height of the crater-bed above the sea level was 1,170* 

 metres or 3,839 ft. The south-western part of Kobandai which was 

 left undestroyed, exposed an almost perpendicular wall of 505 

 metres or 1,658 ft. overlooking the crater. From these and from the 

 other data already mentioned, it was found that the part of the 

 mountain that broke away had an altitude of 670 metres or 2,198 ft. 

 above the crater, and that 164*6 metres or 540 ft. had been sheared 

 oft* from its top. On PI. XX11I is given a rough vertical section 

 through the line AB, that is the section passing through the original 

 summit and the highest fractured edge of Kobandai. The doited line 

 shows the parts blown off. It will be seen that the vertical line 

 passing through the summit of the mountain was situated about 442 

 metres or 1,450 ft. N.E., from the fractured edge, its position being 

 indicated on the plan by a cross. The main body of Kobandai and 

 the north-eastern side were completely blown away, leaving a portion 

 of the south western Hank. The flank of Kushigamine sloping 

 S.W. met that of Kobandai sloping N.E., practically forming one 

 connected mass, and the consequence was that the latter' s destruc- 

 tion was shared by the former in parts where they were so united. 

 Kushigamine now stands overlooking the crater with a bared per- 

 pendicular wall 452 metres high. 



It is also to be observed that the great fissure line along which 

 the mountain was rent nearly passed through the summit vertical, 



* Also from Messrs. Wada and Ötsuka's measurements 



