Newcombe. — Cellulose Enzymes. 81 
amylohydrolytic, attacking starch a little more strongly than 
the extract of Lupinus does. 
4 . The enzyme from the endosperm of Phoenix dactylifera 
is very strongly cytohydrolytic, but amylohydrolytic to a 
little less degree than the extract of Lupinus , and to a con- 
siderably less degree than the enzyme from the cotyledons 
of Phoenix. 
5. The very dilute enzyme of the malt of Hordeum vulgar e, 
as well as that of the other plants here considered, attacks 
reserve cellulose ; hence an enzyme-solution need not be 
strong to act on cell-walls. 
6. None of the five enzyme-extracts used in this work 
shows itself, more than the other extracts, peculiarly suited 
to the solution of any one kind of reserve cellulose here 
employed. 
7. With all the ferments the walls at first become hyaline 
appear gradually more and more transparent, and finally 
‘ melt * wholly away in solution. 
8. The enzymes from Lupinus albus and from Phoenix 
dactylifera act on starch so feebly, and on reserve cellulose 
so energetically, that they are to be regarded as cytase as 
distinguished from diastase. 
G 
