LETTERS TRANSMIPPAS 
UNITED STATES DEPARTMENT OF AGRICULTURE, 
BuREAU OF ENTOMOLOGY, 
Washington, D. C., April 15, 1918. 
Sir: I transmit herewith a manuscript entitled ‘‘The Stable Fly,” 
by F. C. Bishopp, of this bureau. This insect is a pronounced enemy 
of domestic animals, frequently, as in the season of 1912, causing 
much loss among cattle and horses. It also becomes of great impor- 
tance on account of its proved carriage of the disease known as 
‘infantile paralysis” among human beings, and of its suspected car- 
riage of pellagra. It is important that stockmen and medical men 
should know at an early date everything possible about this pest, 
and the accompanying manuscript has been prepared for this pur- 
pose. I recommend that it be published as a Farmers’ Bulletin, in 
order to enable its wide distribution. 
Respectfully, L. O. Howarp, 
Entomologist and Chief of Bureau. 
Hon. D. F. Houston, 
Secretary of Agriculture. 
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