Abstract
A biographical sketch of Dr. A. D. Hopkins, the father of forest ent9mology in this country, whose studies established the great economic importance of forest insects, the percentage principle of control, the host selection principle, some of the possibilities in silvicultural control and business management and the value of the Bioc1imatic La was a guide in control work. The application of these investigations is exemplified by the studies of assistants to Dr. Hopkins, W. F. Fiske on the gipsy moth, Dr. F. C. Craighead on the locust borer, and Dr. T. E. Snyder on white ants. There is great need for further investigations along these lines and for the closest cooperation between forester and forest entomologists in developing silvicultural methods and modifications in management.
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