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UNITED STATES DEPARTMENT OF AGRICULTURE 
CIRCULAR No. 148 
R en Va 
Washington, D. C. Rev ede 
Parasit 
ana Parasitic 
of Horses 
By 
Issued November 1930 
Revised January 1933 
Slightly revised January 1936 | 
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BENJAMIN SCHWARTZ 
Senior Zoologist 
MARION IMES 
Senior Veterinarian 
and 
WILLARD H. WRIGHT 
Associate Veterinarian 
Zoological Division, Bureau of Animal Industry 
For sale by the Superintendent of Documents, Washington, D.C. 
CAMEO DOME 
ES JUL 1 4 1937 a 
g, Department of Agricultpt 
Iseases || 
Price 10 cents 
