THE GREAT ERUPTION OF SAKURA-JIMA IN 1914. 151 



iii. Tlie aqueous solution after fusion with an alkaline car- 

 bonate shows the presence of AlO,i and SiO.,, with a trace of Fe 

 and Mn. 



The sublimates are composed of, enumerated in the order of 

 quantity, firstly, GaS0,+2H.,0, then NH.CI, 3IgS0, and lastly, free 

 SO,, 



The so-called rock salt with a saline taste, which tliinly coats 

 the block lava, was dissolved in water and evaporated. Abundant 

 crystals of gypsum in flat rhomboid tablets and dirty cubes of 

 (?) rock salt constitute the dry preparation. 



M. Kanai found in a qualitative test made in fresh sublima- 

 tion-products the following minerals with relative quantities in the 

 order mentioned below : Salmiac, NHJJl ; kalinite, KÄl{SO^.{\2H.O ; 

 molysite, FeCk \ chloraluminite, AlCliQH.j,0 ; rock salt, NaGl ; iron- 

 alum, FeSO,-Al,{SO,),-24:H20. 



Summary To Summarize what is stated on these scanty data, 



the most dominant elements of the products of volcanic exhalation 

 are undoubtedly salmiac and p r i m a r y gypsum,'^ besides sulphur. 

 The cauliflower- shaped so-called steam column ascending from the 

 vents and also the white fumes emitted by fluent lava streams 

 can be reasonably attributed to the presence of abundant salmiac 

 fumes (p. 07, footnote). 



1) Here it is meant that the gypsum is a direct product of exhalation. 



