. Bulletin of the Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 810 Contribution from the Bureau of Entomology L. O. HOWARD. Cliief Washington, D. C. PROFESSIONAL PAPER February 26,1920 EUROPEAN FOULBROOD By G. F. WHITE, Specialist in Insect Diseases CONTENTS Page Introduction 1 Name of the Disease 2 Healthy Larvae of the Age at which they Die of European Foulbrood .... 3 Symptoms 4 Etiology 7 Technique 15 Thermal Death Point of Bacillus pinton 17 Resistance of Bacillus pluton to Drying . 17 Resistance of Bacillus pluton when Dry
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. UNITED STATES DEPARTMENT OF AGRICULTURE BULLETIN No. 810 Contribution from the Bureau of Entomology L. O. HOWARD. Cliief Washington, D. C. PROFESSIONAL PAPER February 26,1920 EUROPEAN FOULBROOD By G. F. WHITE, Specialist in Insect Diseases CONTENTS Page Introduction 1 Name of the Disease 2 Healthy Larvae of the Age at which they Die of European Foulbrood .... 3 Symptoms 4 Etiology 7 Technique 15 Thermal Death Point of Bacillus pinton 17 Resistance of Bacillus pluton to Drying . 17 Resistance of Bacillus pluton when Dry to Direct Sunlight 19 Resistance of Bacillus pluton in Water to Direct Sunlight 20 Resistance of Bacillus pluton in Honey to Direct Sunlight 21 Page Resistance of Bacillus pluton to Fermen* tation 21 Resistance of Bacillus pluton to Putrefac- tion Viability of Bacillus pluton in Honey . Viability of Bacillus pluton in Pollen . Resistance of BacUlus pluton to Carbolic Acid Effect of Drugs on European Foulbrood Transmission of European FOulbrood . Diagnosis 28 Prognosis 31 Summary and Conclusions ..... 31 Literature Cited 34 Explanation of Plates 37. WASHINGTON GOVERNMENT PRINTING OFFICE 1920. 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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