LETTER OF TRANSMITTAL. 



IT. S. Department of Agriculture, 



Bureau of Entomology, 

 AVasliington^ D. C, September 15^ 1906. 

 Sir: I have the honor to transmit herewith the manuscript of a con- 

 tribution by Prof. E. Dwight Sanderson on the hibernation and 

 development of the cotton boll weevil. This paper embodies the 

 results of a large amount of work carried on by Professor Sanderson 

 while State entomologist of Texas, and was written b}' him in the fall 

 of 1904. In view of its practical bearing and the fact that much of 

 the data it contains is new, I recommend its publication as Part I of 

 Bulletin No. 63 of this Bureau, the bulletin as a whole to be entitled 

 "Papers on the Cotton Boll Weevil and Related and Associated 

 Insects," and to be made up of separate papers by various persons 

 engaged in cotton boll weevil investigations. 



Respectfully, 



F. H. Chittenden, 



Acting Cliief of Bureau, 

 Hon. James Wilson, 



Secretary of Agriculture. 



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