158 AET. 3. — B. KOTO : 



The lavas of Fariihata-SamhongacJd (PI. XVI. Fig. 7) and 

 Hikino-hira. — They are all as the above with few hypersthones 

 and abundant plagioclases. 



The groiindmass is also light-gray under weak powers. Higher 

 powers resolve its hyalopilitic texture approaching to that of 

 pilotaxitic. Rectangular and lath- shaped twinned plagioclases make 

 up the main bulk of groundmass, intermixed with a subordinate 

 quantity of fine needles of augite, besides grains of magnetite 

 which are found mostly attached to the augite. 



B. The Kabano Lava. (North Side.) 



PI. XVI. Fig. 8 ; PI. XVII. Fig. 1. 



a) Mode of Occurrence.— An old lava descended the north- 

 western slope to the 200-meter contour-line, from the interior 

 of the (?) apical crater (terminal lava-flow). It hangs on the slope 

 or piano in digital lobes and forms a characteristic shelf at its 

 end bv stemming and coolino; of the viscous lava stream in its 





Fig. 33.— North Cone (Kita-dal;,') -xiewecl from ncwr Sbira-hania. Cf. Text-fig. 37 (p. 173). 



1 — ^Kabano laAa-flow. 2 — Erosion-gulcli of Matstira-gawara. 3 and \ — East and west 



ventlioles of the An-ei eruption. 



