Dun }[oH,it<n-i). y»Jsn,t. - A cl.-irk .irrpen colon 

 u'l silica 20-0;i per cent. W. Skey, Col. Mu 



iilidut four feet wide, intj-rsecting the serpentiiu 



myself. (Juinberlaiulitf is known from two pi; 



well as from Ironmine J [ill, CumboilancL Rhode 



SIDiilROLITE GROUP. 



trOpefcl^ir^^ Alumina, 

 :nt. S.G. 5-75 to <^-:3l, 



