HIS BULLETIN has been written briefly and in 
simple terms for the beginner, and especially for 
members of the Boys’ and Girls’ Poultry Clubs. For 
additional and more complete information on the 
subject the reader should ask for Farmers’ Bulletin 
801, “ Mites and Lice on Poultry.” This may be ob- 
tained in many cases from club leaders or will be 
supplied free of charge on application to the’ U. S. 
Department of Agriculture, Washington, D. C. 
Contribution from the Bureau of Animal Industry 
JOHN R. MOHLER, Chief 
Washington, D.C. September, 1920 
