THE ERUPTTOX OF BANDAI-SAN. 159 



I. IT. III. 



Insoluble portion. Soluble portion, 

 (by difference.) 



Si0 2 59-70% 40-11 19-59 



A1A 16-68 6-75 9-93 



FeA 5-43 1-44 3-99 



FeO 2-05 2-05 



Mn 3 0, '98 trace -98 



CaO 5-20 1-75 3-45 



MgO 2-35 1-08 1-27 



Xn 2 2-67 1-25 1-42 



K 2 -99 -71 -28 



S 2-25 2-25 



SO ;i -95 -95 



P 2 5 -15 -15 



Loss by ignition .... '90 -90 



100-30 53*09 



The ash contained some soluble matters which on being extracted 

 with cold water gave traces of lime, chloride, and sulphate. 



The analysis of another, and a somewhat more stony sample of 

 the ash was made by Mr. H. Yoshida of the Imperial University, with 

 the following result : — 



Si Oo 61-82 % 



FeA; + A1A.... 28-10 



CaO 5-73 



MgO -79 



K 2 1-10 



Na 2 2-42 



99-96 



