224 BACTERIOLOGY. 



minutes in a 1 to 2 per cent, soda solution, and the board 

 upon which the animal was tacked, as well as the tacks, 

 towels, dishes, and all other implements used at the 

 autopsy, are to be sterilized by steam. All cultures, 

 cover-slips, and, indeed, all articles likely to have infec- 

 tious material upon them, must be thoroughly sterilized 

 as soon as they are of no further service. 



