Volcano Ôshima, Idzu. 59" 



September 16, 1012 C:kiHx^), which lasted till Octol>cr 2!) (forty- 

 three days). During this interval the extrusion o£ lava took place 

 from a vent newly formed at the western part of the crater-bottom. 

 Nakamura's cone was buried under the new lava except at its 

 apical part, and a new larger spatter cone— Omori's cone'^ (0 hi 

 Fiçr. 19, p. 33)— was formed on the bottom. 



The layer of tlie lava extruded by the eruption in September 

 — October sank owing to its own weight on January 14, 1013 

 (;^]£-/^). Tliis was accompanied by a new extrusion of lava 

 which lasted till the ^öth. 



A magnificent lava outburst that began again on May 15, 

 10 U (:klEH^^) reached its climax of intensity during the next 

 three days, thence becoming gradually w^eaker until on the 21st 

 the continuous lava extrusion ceased, after which erupting inter- 

 mittently several times in a day it stopped completely within a few 

 days. The lava extruded in this eruption filled up the depressed 

 part formed in .January 1013, reaching a level of 14 m. below 

 Kawajiri. Both Xakamuea's cone and Omoei's cone were buried 

 entirely under the newly erupted materials while several new spat- 

 ter cones were formed on the crater-bottom (Fig. 20, p. 33). 



(14 1 1915 {-k IE m if) 

 On about the 10th of October, 1015 a light on the top of the^ 

 mountain was seen at night. On 14th a smaU amount of black 

 ash fell in Motomura^^ (Ic), Sanohama^ (le), etc., and at midnight 

 of the 16th strong roarings wert^ heard and airquakes were felt 

 at Motomura. The activity continued till the end of October but 

 ceased without having poured out any lava."^ 



4) Tôyô Gakugel Zayshi, Xo. Ill, 191-> (in Japanese). 



