PLATE IL 



Fig. 1. — Iddingsite-bearing andésite, magnified Oö diameters, 

 showing the typical intersertal structure. Olivine is here changed 

 internally into a red mineral, which the writer believes to he 

 iddingsite, as is well seen on the lower right octant in the 

 figure (pp. V.) and oö). Kippai Island. 



Fig. 2. — The slide of ophitic basalt (p. 38). Sho-chi-kaku, 

 the Island of Hôko. 



Fig. o.— OKvine-less hypersthene-bearing basalt, with two 

 large crystals of hyperthene in the centre of the figure. The 

 structure is granulitic. Tlie Isle of AVam-pai. V. ol>. 



Fig. 4. — The same rock-type as the pi-eceding, but with 

 intersertal structure. Local patches of hypersthene, augitc and 

 plagioclase, Avith the hyperitic structure. Sei-kei, the Island of 

 Hôko. Pp. o'.> and 41. 



Fig. '"). — Analcime-basalt from ]Xai-an, Gio-o. It has granu- 

 litic structure. White patches ai'e filled with analcime, and a 

 dirty portion at the middle of the field is the secondary natrolite. 

 P. 42. 



Fig. <>. — Foraminiferal rock, consisting of discoidal and spiral, 

 water-worn shells of Calcarina Spenglerl, besides fragments of 

 corals, bivalves and serpula. In natural size. Kippai Island. 

 P. i:5. 



