ea WEPARIMENT OF AGRICULTURE. 
DIVISION OF ENTOMOLOGY. 
BULLETIN No. 17. 
PELEN CEE DUG: 
A GENERAL SUMMARY OF ITS HISTORY, HABITS, ENEMIES, AND OF 
THE REMEDIES AND PREVENTIVES TO BE USED AGAINST IT, 
iby, 1. O:. BOW ARD, M. S.. 
ASSISTANT ENTOMOLOGIST. 
WASHINGTON: 
GOVERNMENT PRINTING OFFIOE, 
1888. 
12734—Bull. 17 
