. The diagnosis of bee diseases by laboratory methods. Bees. *\&'%jru |fe BULLETIN No. 671 j Contribution from the Bureau of Entomology L. O. HOWARD, Chief. Washington, D. C. PROFESSIONAL PAPER. June 21, 1918 THE DIAGNOSIS OF BEE DISEASES BY LABORATORY METHODS. By Akthue H. McCray, Apicultural Assistant, and G. F. White, Expert Engaged in the Investigation of Bee Diseases. CONTENTS. Introduction Laboratory methods Diseases to be diagnosed. European foulbrood. American foulbrood. Page. 1 2 4 4 Page. Diseases to be diagnosed—Continued. Sacbrood 10 Other abnormal conditions of the brood. 11 N
. The diagnosis of bee diseases by laboratory methods. Bees. *\&'%jru |fe BULLETIN No. 671 j Contribution from the Bureau of Entomology L. O. HOWARD, Chief. Washington, D. C. PROFESSIONAL PAPER. June 21, 1918 THE DIAGNOSIS OF BEE DISEASES BY LABORATORY METHODS. By Akthue H. McCray, Apicultural Assistant, and G. F. White, Expert Engaged in the Investigation of Bee Diseases. CONTENTS. Introduction Laboratory methods Diseases to be diagnosed. European foulbrood. American foulbrood. Page. 1 2 4 4 Page. Diseases to be diagnosed—Continued. Sacbrood 10 Other abnormal conditions of the brood. 11 Nosema disease 13 Literature 14 INTRODUCTION. Already some of the States have established laboratories for the diagnosis and investigation of the diseases of bees. The number of State laboratories where a rapid and accurate diagnosis of suspected material can be made will no doubt increase in the future in pro- portion as State laws for bee-disease inspection and control are insti- tuted and perfected. Inspectors realize that there will be always some suspected brood and many conditions among adult bees which can not be diagnosed in the field, but which will require laboratory methods for diagnosis. In addition to the demands made by in- spectors for the examination of suspected material, there will be numerous independent requests from beekeepers. During the past several years the writers have examined a large number of specimens of suspected brood and bees sent to the Bureau of Entomology, and have developed and perfected methods and technique in the diagnosis of the known diseases of bees which, it is believed, will prove valuable to others. It is the aim of this paper to present these methods of diagnosis for the benefit of those who may engage in similar work. 47164°—Bui. 671—18 1. 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 perfec
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwa, booksubjectbees
