{| UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 810 
Contribution from the Bureau of Entomology 
L, O. HOWARD, Chief 
Washington, D. C. 
EUROPEAN FOULBROOD 
By 
G. F. WHITE, Specialist in Insect Diseases 
CONTENTS 
: Page Page 
Introductions <2) Sy<\ sew oe we 1 | Resistance of Bacillus pluton to Fermen- 
Name of the Disease ....... 2 tation! +25 {6.65 6 AE ae ee ee 
Healthy Larva2e of the Age at which they Resistance of Bacillus pluton to Putrefac- 
Die of European Foulbrosod .... 15 C1) Patera er iagti Ing Gating Dunemaul od 
MIMINPLOMISK pice tree or eats ve ean Viability of Baciilus pluton in Honey . 23 
OLOGY. foie cue carat er ve Viability of Bacillus plutonin Pollen. . 
Mechnique®, .° ss-60%. 206 6 Resistance of Bacillus pluton to Carbolic 
Thermal Death Point of Sacillus pluton ACI. oS eee.) an a opea opiead ay ahs 
Resistance of Bacillus pluton to Drying . Effect cf Drugs on European Foulbrood 
Resistance of Baciiius pleton when Dry Transmission of European Foulbrood ,_ 
to Direct Sunlight . . . . ... . Diagnosis . .. .» 
Resistance of Bacillus pluten in Water to Prognosis . ..... 
Direct Sunlight . . . 2. 2. 2. «© e Summary and Conclusions 
Resistance of Bacilius pluton in Honey to Literature Cited ... . 
Direct Sunlight Sher Cam lerMen eccrine Explanation of Plates . o 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1920 
