A more or less cylindrical gall is found on the tips of branches and on
sprouts of chestnut, caused by an insect claimed to be a moth. At West
Chester and Valley Forge, these galls are very numerous. Out of 161
galls examined by the plant pathologist, forty-five of the 28 per cent.
showed the presence of blight, while 49 per cent. showed the presence
of another fungus. A gall that shows the presence of chestnut blight in
such a large percentage of cases should be given careful study.