June, 1923] HARVEY — MALTOSE IN APPLE TISSUE? 293 
section of the country. But for the present, in this laboratory, such maltose 
percentages are multiplied by a factor of about 1.04 and interpreted as 
chiefly phloridzin. 
Finally, it may be added, if all maltose values reported for apple tissue 
are really of phloridzin, then the function of maltose and the explanation 
of its behavior, as outlined by Mitra, can scarcely longer be accepted. 
Nevertheless, there would remain the very interesting question: What, 
then, is the meaning of this remarkable seasonal behavior of phloridzin? 
Oregon Agricultural Experiment Station 
21 
