PLATE IV. (MicropliotograpLs) 



Fig. 1. — Olivine-bytownite-dolerite, constituting the igneous body (PI. YI. (tA 

 11) to the east of Kazahaya. x 70. See p. 93. p . . . calcic bytownite, 

 rt . . . . augite, o . . . . oh vine. 



Fig. 2. — Ohvine-bytownite-basalt (/9), constituting the igneous body (PL VI. 

 G A 9) to the west of Okata. x 70. See p. 94. j) ■ • ■ calcic bytownite, 

 o . . . . oh vine with brown iron oxide along the margin. 



Rocks occurring as Dykes. 



Fig. 3. — Olivineless basaltic bandai te («), the rock of the dykes exposed on 



the chft* opposite to Fudeshima. x 70. See p. 9;"). p . . . . calcic 



bytownite, « . . . . augite. 

 Fig. 4:. — Olivineless basaltic bandaite {ß), the rock of the southernmost dyke 



of the tlnee on the ^^■estern ring-wall of the somma, x 135, See p. 95. 



2>. . . . calcic bytownite, a . . . . augite. 



Phaneroerystalline Ejecta. 



Fig. 5.— Micro-allivalite. x 20. See p. 98. p . . . . anoiihite, o... olivine. 

 Fig. 6. — Augite-micro-diorite. x 30. See p. 99. p . . . . andesine-labradorite, 

 a . . . , unusual augite, s . . . salie interstitial matter. 



