Vines . — The Proteases of Plants (V). 113 
The results of these experiments can be very briefly summarized. 
I have succeeded in isolating from a vegetable tissue, I believe for the first 
time, a protease that is essentially peptic in its properties, digesting fibrin 
to albumose or peptone, but not acting on albumose or peptone whether 
produced by its own digestion of fibrin or added as Witte-peptone. The 
facts justify the conclusion that the Hemp-seed contains two proteases, the 
one a peptase, the other an ereptase. What now remains to be done is to 
apply this method of investigation, modified according to circumstances, to 
other cases, and so to arrive at a general conclusion as to the nature of 
‘vegetable trypsin’. With this work I am now occupied. 
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