It will be of interest to quote here the words of the Forest
Entomologist, of the U. S. Department of Agriculture, in his comment on
a widely disseminated press notice of that Department, November 22nd,
1912, apparently based on the work of F. C. Craighead.
“The beneficial work of these insects can, however, be greatly
encouraged if the owners of the timber will dispose of the diseased
trees in the principal centers of infection, as recommended by the
Chestnut Blight Commission of Pennsylvania, and other State and Federal
officials. Thus, if the large majority of the infection is disposed of,
the beneficial insects will concentrate on the remaining scattering
and isolated infections, and thus more completely destroy the fruiting
bodies and contribute to the protection of the remaining living trees.
In fact, it is a question of the owner securing the greatest benefit
from the natural agencies of control by doing his share of the work.”