



tS. DEPARTMENT. OF. AGRICULTURE, 
a BUREAU OF ENTOMOLOGY— BULLETIN No. 98. 
es es O. HOWARD, Entomologist and Chief of Bureau. 
HISTORICAL NOTES ON THE CAUSES — 
OF BEE DISEASES, 

5 BY. +e, 
. Hof. PHILLIPS, Pa. Dee. | 
oe In Charge of Bee Culture, = ee 
dL, . hd et ORND : | 
G. F, WHITE, Pu. D., M. D., 
: Expert in Bacteriology. 
3 Issuep Marcu 26, 1912. 
¥ 
- a an 

WASHINGTON: 
GOVERNMENT. PRINTING OFFIOE. 
1912. 
