14 Vol. XmiL, Art. fi. _ S. Tsuboi : 



glass. In the great mijority of lavas of this type, small olivine 

 phenocrysts are sporadically found in negligible amount, though in 

 some they are lacking. 



(2) Hypersthene-hasaltic handaite. 



Lavas of this type are exposed only on the sea cliff marked 

 // (Ic) on the geologic map (PL V.), to the south of Motomura'^ 

 (Ic), and are intercalated by the lavas of the first typo (PI. YI. 

 BC 2). 



This type does not differ from the preceding in its essential 

 characters but is characterized by the presence of hypersthene 

 phenocrysts in moderate quantity. 



(3) Tcco-pyroxene-basaltic bandaitc. 



This is seen only at Gyôja'^ (3c ; marked /// on the geo- 

 logic map ; PI. VI. FG 6), in three layers, each about 20 ni. in 

 thickness, intercalated by layers of éjecta. This type is marked by 

 the presence of phenocrysts of both hypersthene and augite in 

 moderate quantity, besides those of plagioclase, as well as by the 

 entire absence of olivine crystals. 



Thes3 lavas appear to have been extruded from a fiank 

 opening while the main one was pouring out lavas of the first 

 type. 



(4) Hypi'rsthene-hearing augite- olivine- by to tcnite-basalt. 



This occurs only at the locality marked IV (3d), on the 

 geologic map (PL V.), on the east coast (PL VI. EF 5). The ex- 

 posure shows clearly that tlie lavas of this type were discharged 

 from a local vent during the extrusion of lavas of the first type 

 (p. 77). 



The characteristic feature is the presence of olivine and augite 

 crystals in abundance. 



1) TtM 2) îf# 



