Andrew Delmar Hopkins - Legacy

Legacy

The diversity and volume of publications that Hopkins produced is unmatched by any other entomologist. Hopkins’ breakthrough research on North American beetles and quantifying Hopkins Law are still highly regarded in today’s scientific community.

Published Works

• Hopkins, A. D. The Redwood: III. Insect Enemies of the Redwood. Bulletin of the Department of Agriculture, Forest Division 38. USDA, 1903.
• Black Holes in Wood, By Andrew Hopkins
• Report on Investigations to Determine the Cause of Unhealthy Conditions of the Spruce and Pine from 1880–1893, By Andrew Hopkins
• Hopkins, A. D. Apr-1891. Preliminary investigation of insect ravages. Yellow Locust. Agricultural Experiment Station, Morgantown, West Virginia, United States.
• Hopkins, A. D. Feb-1894. Black Holes in Wood. Entomological Department, United States.
• Hopkins, A. D. Apr-1899. Report on Investigations to Determine the Cause of Unhealthy Conditions of the Spruce and Pine from 1880–1893. Agricultural Experiment Station, Morgantown, West Virginia, United States.
• Hopkins, A. D. 1899. Preliminary report on the insect enemies of forests in the Northwest : an account of the results gained from a reconnaissance trip made in the spring and early summer of 1899. Division of Entomology, United States.
• Hopkins, A. D. 1901. Insect enemies of the spruce in the Northeast : a popular account of results of special investigations, with recommendations for preventing losses. Division of Entomology, United States.
• Hopkins, A. D. Jun-1902. On the study of forest entomology in America. Division of Entomology, United States.
• Hopkins, A. D. 1902. Insect enemies of the pine in the Black Hills Forest Reserve: an account of results of special investigations, with recommendations for preventing losses. Division of Entomology, United States.
• Hopkins, A. D. 1902. Some of the principal insect enemies of coniferous forests in the United States. Dept. of Agriculture, United States.
• Hopkins, A. D. 1903. Insect injuries to hardwood forest trees. Dept. of Agriculture, United States.
• Hopkins, A. D. 1903. The redwood. Bureau of Forestry, United States.
• Hopkins, A. D. Nov-1903. Powder-post injury to seasoned wood products. Division of Entomology, United States.
• Hopkins, A. D. 1904. Insect injuries to forest products. Bureau of Entomology, United States.
• Hopkins, A. D. 1904. Catalogue of exhibits of insect enemies of forests and forest products at the Louisiana Purchase Exposition, St. Louis, Mo., 1904. Division of Entomology, United States.
• Hopkins, A. D. May-1905. Black check in western hemlock. Bureau of Entomology, United States.
• Hopkins, A. D. 1905. Insect enemies of forest reproduction. Dept. of Agriculture, United States.
• Hopkins, A. D. 1905. The Black Hills beetle. Bureau of Entomology, United States.
• Hopkins, A. D. 1906. Some insects injurious to forests. pt. I, The locust borer. Bureau of Entomology, United States.
• Hopkins, A. D. Jan-1907. Pinhole injury to girdled cypress in the South Atlantic and Gulf states. Bureau of Entomology, United States.
• Hopkins, A. D. Feb-1907. The locust borer and methods for its control. Bureau of Entomology, United States.
• Hopkins, A. D. Mar-1907. Some insects injurious to forests. pt. III, Additional data on the locust borer. Bureau of Entomology, United States.
• Hopkins, A. D. Jun-1907. The Whitepine Weevil. Bureau of Entomology, United States.
• Hopkins, A. D. 1907. Notable depredations by forest insects. Dept. of Agriculture, United States.
• Hopkins, A. D. 1909-15. Contributions toward a monograph of the scolytid beetles. Bureau of Entomology, United States.
• Hopkins, A. D. 1911. The dying of pine in the southern States: Cause, Extent, and Remedy. Department of Agriculture, United States.
• Hopkins, A. D. 1915. List of generic names and their type-species in the coleopterous superfamily Scolytoidea. United States National Museum, United States.
• Hopkins, A. D. and Snyder, T. E. Jan-1917. Powder-Post Damage by Lyctus Beetles to Seasoned Hardwood. Department of Agriculture, United States.
• Hopkins, A. D. Mar-1921. The Southern Pine Beetle; A Menace to the Pine Timber of the Southern States. Department of Agriculture, United States.
• Hopkins, A. D. Bioclimatics: a science of life and climate relations. (U.S. Dept. of Agriculture: 1938).

Appendix

Example Calculations using Hopkins Time Law

If you were to travel from Kansas City (1000 ft elevation, 39.11 degrees N latitude, -94.63 longitude) to Omaha, Nebraska (1034 feet elevation, 41.26 degrees N latitude, -95.93 longitude), the delay in the coming of spring would be…

=

(34 ft /100 ft * 1.25 days) + (2.15 degrees * 4 days) + (1.3 degrees * 1.25 days) = 8.5 days + 2.6875 days + 1.625 days = 10.65 Days