. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Washington, D. C. V March 19,1924 PLANTS TESTED FOR OR REPORTED TO POSSESS INSECTICIDAL PROPERTIES By N. E. McINDOO, Insect Physiologist, Fruit Insect Investigations, Bureau of Entomology, and A. F. SIEVERS, Chemical Biologist, Office of Drug, Poisonous, and Oil Plant Investigations, Bureau of Plant Industry CONTENTS Page Economic Aspects of Plant Insecticides 1 Methods Used by the Writers in Preparing Plants for Insecticides 2 Insects Employed and Methods of Testing Preparations against Them 3 Results Obtained by the
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Washington, D. C. V March 19,1924 PLANTS TESTED FOR OR REPORTED TO POSSESS INSECTICIDAL PROPERTIES By N. E. McINDOO, Insect Physiologist, Fruit Insect Investigations, Bureau of Entomology, and A. F. SIEVERS, Chemical Biologist, Office of Drug, Poisonous, and Oil Plant Investigations, Bureau of Plant Industry CONTENTS Page Economic Aspects of Plant Insecticides 1 Methods Used by the Writers in Preparing Plants for Insecticides 2 Insects Employed and Methods of Testing Preparations against Them 3 Results Obtained by the Writers 5 Catalogue of Plants Tested for or Reported to Possess Insecticidal Properties 24 General Summary S3 Conclusions 54 Literature Cited 54 Index of Bolaiical and Common Names of Plants Catalogued 59 WASHINGTON GOVERNMENT PRINTING OFFICE 1924. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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