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4 
oe 
Y 
U.-S. DEPARTMENT. OF AGRICULTURE, 
BUREAU OF ENTOMOLOGY—-BULLETIN No. 105. 
L. O. HOWARD, Entomologist and Chief of Bureau. 
, 
THE ROCKY MOUNTAIN SPOTTED 
FEVER TICK. 
WITH SPECIAL REFERENCE TO THE PROBLEM ~ 
OF ITS CONTROL IN THE BITTER ROOT 
VALLEY IN MONTANA. 
BY 
W. D. HUNTER, 
In Charge of Southern Field Crop Insect Investigations, 
AND 
F, G. BISHOPP, 
Entomological Assistant. 
[In Cooperation with the Biological Survey and the 
Montana Agricultural College. ] 
Issuep Novemper 17, 1911. 
—_ 
LL a 
= agithsonian ingzis = 
Nifptz 
he4+07b4 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. 
1911. 
