LETTER OF TRANSMITTAL. 



U. S. Department of Agriculture, 



Division of Entomology, 

 Washington, D. C, April J, 1902. 

 Sir: 1 herewith transmit a manuscript l\y Prof. C. V. Piper, of the 

 Washington Agricultural Experiment Station, Pullman, Wash., sub- 

 mitted at your request. I have examined the manuscript, and recom- 

 mend its publication as a Farmers' Bulletin. The portion relating to 

 fungous diseases and the remedies therefor has been approved by the 

 Plant Physiologist and Pathologist. 



Respectfully, 



L. O. Howard, 



Kntoinologist, 

 Hon. James Wilson, 



Secretary of Agriculture. 

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