STATE OF ILLINOIS 



Adiai E. Stevenson, Governor 



DEPARTMENT OF REGISTRATION AND EDUCATION 



C. Hobart Engle, Director 



AUTOMATIC SPRAYER 



for Control of Biting Flies on Cattle 



Willis N. Bruce 



.^■. 



WU I J II I. I ..IIP I 



Biological Notes No. 27 



Printed by Authority of the State of Illinois 



NATURAL HISTORY SURVEY DIVISION 



Harlow B. Mills, Chief 



Urbana, Illinois 



February, 1952 



