238 
NEIL E. STEVENS AND FRED W. MORSE 
Histological study yielded no direct evidence as to the manner of entrance 
of the fungus into the berry. In the earliest stages of decay examined, 
hyphae were abundant in the region close to and beside the calyx. While 
this may be the region in which the fungus often gains entrance, it is im- 
FiG. 2, A and B. Sections showing constrictions in hyphae of endrot fungus where 
they pass through walls of cranberry cells. X 700. C. Storage cell of cranberry showing 
several hyphae of endrot fungus entering through a single opening. X 450. 
probable that this is the only place, since in Wisconsin endrot commonly is 
first apparent at the stem end. 
Chemical Observations 
During the winter of 1918, on the dates indicated in Table i, three 
samples of cranberries of the Howes variety, selected according to the 
method outlined above because they were infected by the endrot fungus, 
were received at the Massachusetts Experiment Station, Amherst, Mass. 
These samples had been held in storage under the conditions described, 
first at East Wareham, Mass., and later at Washington, D. C. In most 
of the berries the decay had progressed so far that the berries were very soft. 
One of the sound samples cited in Table i had been stored under the same 
conditions as the decayed samples. 
Soon after a sample was received, duplicate charges of 50 grams each 
were prepared for the determination of total sugars and total acids. The 
remainder of the fruit was weighed and dried at a temperature of about 
