HENRY SCHMITZ 



799 



Urease and Amidase. 



To determine the presence or absence of enzymes which spKt 

 amino-acids and urea into ammonia and hydroxy acids, the indicator 

 method suggested by Schmitz and Zeller^ was employed. The re- 

 sults are shown in Table IV. 



TABLE IV. 

 Urease and Amidase Activity of Polyporus vohatus and Fames igniarius. 



Positive results were obtained only in the case of Fames igniarius 

 when urea was used as a substrate. 



