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LETTER OF TRANSMITTAL. 
United States Department of Agriculture, 
Division of Entomology, 
Washington^ D. C , Wovemher 3^ 1903. 
Sir: I have the honor to transmit herewith for publication A Brief 
Account of the Principal Insect Enemies of the Sugar Beet, prepared 
b}- Mr. F. H. Chittenden, of this office. This paper has already 
appeared as a portion of Report No. 74 of the U. S. Department of 
Agriculture entitled "Progress of the Beet-Sugar Industry in the 
United States in 1902," for which it was specially prepared by your 
instructions. Owing to the subordinate position held by this article, 
the consideration of the subject was limited to the more prominent 
msect pests affecting sugar beet, and it was therefore impossible to 
enter into detail regarding these or other less injurious insects which 
are known to affect this important crop plant. Many of the species, 
especially those of greatest economic importance, have received more 
extended notice in other publications of this office, notably in Bulletins 
Nos. 19, 23, 29, 33, and 40, of the same series, and there are many 
others known to affect sugar beet which are not even mentioned, 
chiefly because we are not sufficiently conversant with their economic 
status. 
I recommend the publication of this paper as Bulletin No. 43, of 
this Division. 
Respectfully, 
L. O. Howard, .Entomologist. 
Hon. James Wilson, 
Secretary of Agriculture. 
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