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10. The waters of mines mould be examined, 

 whether pure, tailelefs, purgative, vitriolic, or 

 chalybeate, &c, 



11. The damps and fleams of mines, and what 

 are the confequences or effects of them; in what 

 feafons and ftate of the air they are chiefly cb- 

 ferved ; and what temperature the air bears in 

 different depths of fuch mines. 



12. The account given by the natives, inha- 

 bitants, miners, workmen, &c. who may be ac- 

 quainted with the fubject 



CLASS 



