LETIER: OF DR ANS Miia 
U.S. DEPARTMENT OF AGRICULTURE, 
BureEAvu oF ANIMAL INDUSTRY, 
Washington, D. C., July 22, 1909. 
Srr: I have the honor to transmit herewith a manuscript entitled 
“Methods of Exterminating the Texas-fever Tick,” by H. W. Graybill, 
scientific assistant in the Zoological Division of this Bureau. 
For many years these ticks, which transmit the disease of cattle 
known as Texas or tick fever, have been a cause of heavy loss and a 
great handicap to live-stock raising in the southern part of the United 
States. The progress so far made, however, in the cooperative cam- 
paign by this Department and State authorities with the object of 
completely eradicating this pest from the country demonstrates that 
it is entirely possible to accomplish that result, although a number 
of years of hard work will be required. It is of great importance for 
the success of this undertaking that the efforts of the officials should 
be supplemented by individual work by the farmers. This paper 
gives simple and practical directions for exterminating the ticks, and 
I respectfully recommend its publication in the popular Farmers’ 
Bulletin series. 
Respectfully, A. D. MELvin, 
Chief of Bureau. 
Hon. James WILSON, 
Secretary of Agriculture. 
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