1913-14.] Enzymatic Peptolysis in Germinating Seeds. 127 
Whether the comparatively slight proteolytic activity observed in the 
present investigation in the Buchner extract of yeast, and previously 
described by other observers (Geret and Hahn, Vines, etc.), is due to a 
trypsin or a pepsin is uncertain ; but it is fairly evident that the peptolysis 
is almost entirely due to different agents, and it would further seem highly 
probable that these agents are similar to the two peptases found in ger- 
minating barley, if they are not identical with them. 
(Issued separately March 26 , 1914 .) 
