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Filtering by: Creator Hopkins, A. D. (Andrew Delmar), 1857-1948 License Public Domain Mark 1.0

Powder-post injury to seasoned wood products

Creator:

Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Division of Entomology

Abstract:

The so-called powder-post injury to seasoned wood has attracted much attention in America, and especially in Europe for centuries, and has been the subject of published articles in many languages. This peculiar injury seems to be on the increase in the United States and numerous requests from a number of...

Resource Type:

Technical Report
The locust borer and methods for its control

Creator:

Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Bureau of Entomology

Abstract:

The locust borer and its relation to detrimental and destructive injuries to the black or yellow locust in the eastern United States have been subjects of special investigations by the Bureau of Entomology during the past two years, which have resulted in the determination of practical methods of control.

Resource Type:

Technical Report
The white-pine weevil

Creator:

Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Bureau of Entomology

Abstract:

The Bureau of Entomology has been conducting systematic and economic investigations of the weevils infesting the bark of the trunk and terminal shoots of conifers in the United States, the results of which will be published in the regular technical and popular bulletins ; but since these can not be...

Resource Type:

Technical Report