oo | 
'U.S. DEPARTMENT OF AGRICULTURE. | 
| DIVISION OF ENTOMOLOGY. 
BULLETIN No. 4.. 
REPORTS 
OF 
OBSERVATIONS AND EXPERIMENTS: 
IN 
THE PRACTICAL WORK OF THE DIVISION, 
MADE 
UNDER THE DIRECTION OF THE ENTOMOLOGIST, 
TOGETHER WITH 
EXTRACTS FROM CORRESPONDENCE ON MISCELLANEOUS INSECTS, 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
1884. 
