OF BENZOL UPON YEAST AND BACTERIA. 



75 



equimolecular solutions of phenols and left to stand for 70 hours. 

 Afterward traces of the different liquids were inoculated in ste- 

 rilised peptone solution with the following results : — 



We observe here, therefore, an exception to the rule, the 

 higher hydroxylated benzols are in the case of the lower fungi 

 less poisonous than phenol itself. Further experiments must be 

 made to bring out a scientific explanation of this exceptional 

 behavior. 



Phloroglucin 



Pyrocatechin 

 Resorcin 



Phenol 



Hydrochinon 

 Pyrogallol 



,4% no development. 

 ,468 



,468 development. 



,468 no development. 



,536 development. 

 >536 



