GENERAL LABORATORY RULES. 81 



hands and forearms with i-iooo mercuric chloride and 

 then with yellow soap. In the case of any fluid containing 

 bacteria being accidentally spilt on the bench or floor, i-iooo 

 mercuric chloride is to be at once poured on the spot. 

 The air of the laboratory ought to be kept as quiet as 

 possible. 



