200 



ANNALS OF THE MISSOURI BOTANICAL GARDEN 



[Vol. 6, 1919] 



Summary 



In Polyporus lucidus the presence of the following enzymes is 

 demonstrated: esterase, maltase, lactase, sucrase, raffinase, 

 diastase, inulase, cellulase, hemicellulase, emulsin, tannase, 

 urease, and trypsin and erepsin when fibrin is used as a substrate. 



In Armillaria mellea the presence of the following enzymes is 

 demonstrated: maltase, lactase, sucrase, raffinase, diastase, 

 inulase, cellulase, hemicellulase, emulsin, urease, amidase, and 

 trypsin and erepsin when fibrin is used as a substrate. 



In Daedalea confragosa 

 berase, maltase, lactase, 



following enzymes are present: 

 ase, raffinase, diastase, inulase, 

 tannase, urease, and trvnsin 



cellulase, hemicellulase, emulsin, tannase, urease, 

 and erepsin when fibrin is used as a substrate. 



A new method for the determination of ammonia liberated 

 by amidase is described. This method involves the application 



of the indicator method for hydrogen ion concentration deter- 

 mination. 



Thanks are due 



the Missouri Botanical Garden for the 



privileges of the library and laboratories and to Dr. B. M. Dug 

 for advice and helpful criticisms. 



Graduate Laboratory, Missouri Botanical Garden. 





