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Some insects injurious to forests. pt. II, The western pine-destroying barkbeetle

Creator:: Webb, J. L. (Jesse Lee), 1878-1942 and United States. Bureau of Entomology
Resource Type:: Technical Report
Full Text:: transmit herewith the manuscript of a contribution, by Mr. J. L. Webb, on the Western Pine-destroying

Tests of a Direct Current Generator

Creator:: Leonard, Charles Herbert and Harris, Charles Sinclair
Abstract:: It is necessary before placing any piece of apparatus on the market to thoroughly test it under similar conditions to that for which it was designed, and to rate it accordingly to the results of the tests, allow a reasonable margin for unusual conditions. By the aid of our technical...
Resource Type:: Undergraduate Thesis
Full Text:: :: .._... :lee:=elEiÉE==. ..N. ... N L.\NA.....a ................................ °1:11:111.11101111

Testing of a Direct Current Machine

Creator:: Taggart, Durland Orville and McColl, Nelson Felde
Abstract:: Living now in an age where the steam engine in many localities soon will be a mere relic more than a useful mechanism with which to convert steam into useful energy. It is rapidly being replaced by the gas engine and the electric generator, in which the latter is thought...
Resource Type:: Undergraduate Thesis
Full Text:: Testing of a direct current machine T H E S I S ON

Insect enemies of forest reproduction

Creator:: Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Department of Agriculture
Abstract:: Reprint from Yearbook of Department of Agriculture for 1905.
Resource Type:: Journal
Full Text:: INSECT ENEMIES OF FOREST REPRODUCTION. BY A. D. HOPKINS, In

Insect enemies of the pine in the Black Hills Forest Reserve : an account of results of special investigations, with recommendations for preventing losses

Creator:: Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Division of Entomology
Resource Type:: Technical Report
Full Text:: saw logs in a mill yard at Boulder, Colo., on August 25, one of these Clerids (Clow nigriventris Lee

Black check in western hemlock

Creator:: Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Bureau of Entomology
Resource Type:: Technical Report
Full Text:: Field Agent. ECONOMIC IMPORTANCE. Black check is the lumberman's name for a common defect, consist

Insect enemies of the spruce in the Northeast : a popular account of results of special investigations, with recommendations for preventing losses

Creator:: Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Division of Entomology
Resource Type:: Technical Report
Full Text:: , DIVISION OF ENTOMOLOGY. INSECT ENEMIES OF THE S1RUCE IN THE NORTHEAST. A POPULAR ACCOUNT OF RESULTS OF

Catalogue of exhibits of insect enemies of forests and forest products at the Louisiana Purchase Exposition, St. Louis, Mo., 1904

Creator:: Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Division of Entomology
Resource Type:: Technical Report
Full Text:: Western Cedar Bark-Beetle (Phkeosinus punctatus Lee. ). Excavates a single straight longitudinal or curved

Some of the principal insect enemies of coniferous forests in the United States

Creator:: Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Department of Agriculture
Abstract:: Reprint from Yearbook of Department of Agriculture for 1902.
Resource Type:: Journal
Full Text:: UNITED STATES. BY A. D. HOPKINS, PH. D., In Charge of Forest Insect Investigations, Division of

The Black Hills beetle

Creator:: Hopkins, A. D. (Andrew Delmar), 1857-1948 and United States. Bureau of Entomology
Resource Type:: Technical Report
Full Text:: DIRECTION OF THE ENTOMOLOGIST. BY A. D. HOPKINS, PH. D., In Charge of Forest Insect Investigation

ScholarsArchive@OSU

Some insects injurious to forests. pt. II, The western pine-destroying barkbeetle

Tests of a Direct Current Generator

Testing of a Direct Current Machine

Insect enemies of forest reproduction

Insect enemies of the pine in the Black Hills Forest Reserve : an account of results of special investigations, with recommendations for preventing losses

Black check in western hemlock

Insect enemies of the spruce in the Northeast : a popular account of results of special investigations, with recommendations for preventing losses

Catalogue of exhibits of insect enemies of forests and forest products at the Louisiana Purchase Exposition, St. Louis, Mo., 1904

Some of the principal insect enemies of coniferous forests in the United States

The Black Hills beetle

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