BY LIONEL C. BALL, B.A. 187 



APPENDIX IV. 



Gaseous Hydrocarbons in Metalliferous Mines. 



Some passing mention should be made of the occurr- 

 ence — unusual but by no means non-existent — of gaseous 

 hydrocarbons in metalliferous mines ; but time has not 

 permitted of my looking up the bibliography of the subject 

 and I can refer to but one case, that of the Silver Islet 

 mine, Ontario, in which gases were met at 1,000 ft. beneath 

 the surface. This was mentioned in a discussion* on 

 the ore deposits of the Cobalt district, when a member, 

 Mr. Hixon, suggested the possibility of the hydrocarbons 

 being magmatic and incidentally the cause of the silver 

 of the lodes being in the metallic state. 



''Op. cit. (20) 



