222 



COXTEXTS. 



i) x\.ii epitome of the geologic history of the neighborhood 

 <:>f Sakura-jima 



B. The outlying Osuml group 



Conclusion 



C. The foundation of Sakura-jima 



«) The six block islands : 1) Oko-shima, 23 — 2) Hakama- 



goshi, 25 — 3) The lava-drowned Karasu-jima, 26 — 4) 



Xanze, 27^ — ^5) Ivojima of Kokubu and its erroneous 



historic interpretation, 27 — 6) Yeno-shima 



h) Tlie subcrust of Sakura-jima 



PART II. The Volcano Sakura-jima 



§ I. MORPHOGRAPHY 



^4. General 



B. The building up of the volcano and topography 



(Appendix. — The vegetable zones of Mt. Sakura-jima) 

 a) Kita-daké or the main, IS^orth Cone 

 h) Naka-daké or the Middle Cone 

 r) Minami-daké or the Soutli Cone 

 d) Poison Gulcli, a mofette . . 

 c) Polyaxial central type of c(jnduit 

 /) Topographic feature . . 

 g) Parasitic cones 



C. Hydrography 



a) Springs 



h) Mud-flood or Yama-sJiitco 

 c) Strcamless 



§ II. The Eruptions of Sakur.v-jima prior to 1914 

 .4. The eruption-periods I.— IV. (708-1766) 



tt) The eruption-period I. (708 a. D.-718).. 



6) The eruption-period II. (764-766(?) ) . . 



c) The eruption-period III. TJic Bu.a[MEI eruption (1468- 



1478) 



19 



20 

 22 

 22 



30 

 30 



30 



31 

 31 



35 



35 

 3G 

 37 

 37 

 38 

 38 

 39 

 39 

 40 

 41 



41 

 41 

 41 

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42 



