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PEDRO TRANSMITTAL: 
U.S. DEPARTMENT OF AGRICULTURE, 
Bureau or ENTOMOLOGY, 
Washington, D. C., September 27, 1911. 
Sir: I oo the honor to transmit Pore a nia ve Ea entitled 
‘‘Historical Notes on the Causes of Bee Diseases,’”’ prepared by Drs. 
EK. F. Phillips and G. F. White, of this bureau. The investigations 
of the causes of bee diseases are highly important in the control of 
these maladies. Many of the papers on this subject are not available 
and many also record errors in observations and conclusions. The 
purpose of the present paper is to assist bee keepers in obtaining a 
proper understanding of the work done by the various investigators 
whose papers are discussed. I respectfully recommend the publica- 
tion of this manuscript as Bulletin No. 98 of this bureau. 
Respectfully, 
L. O. Howarp, 
Entomologist and Chief of Bureau. 
Hon. James WILson, 
Secretary of Agriculture. 
