90 METHODS OF CULTIVATION OF BACTERIA 



as in public-health work, a large number of tubes are being daily 

 put out of use, they may be placed in an enamelled slop-pail, 

 and this when full is placed in the steam steriliser. 



A white glazed tile on which a bell-jar can be set is very 

 convenient to have on a bench. Infective material in watch- 

 glasses can be placed thus under cover while investigation is 

 going on, and if anything is spilled the whole can be easily 

 disinfected. In making examinations of organs containing 

 virulent bacteria, the hands should be previously dipped in 

 1-1000 mercuric chloride and allowed to remain wet with this 

 solution. No food ought to be partaken of in the laboratory, 

 and pipes, etc., are not to be laid with their mouth-pieces on 

 the bench. No label is to be licked with the tongue. Before 

 leaving the laboratory the bacteriologist ought to wash the 

 hands and forearms with 1-1000 mercuric chloride and then 

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

 being accidentally spilt on the bench or floor, 1-1000 mercuric 

 chloride is to be at once poured on the spot. The air of the 

 laboratory ought to be kept as quiet as possible. 



