Ue Perak PT MENT OF AGRICULTURE, 
BUREAU OF ENTOMOLOGY—BULLETIN No. 80, Part IV. 
L. O. HOWARD, Entomologist and Chief of Bureau. 
PAPERS ON DECIDUOUS FRUIT INSECTS 
AND INSECTICIDES. 
THE PEAR THRIPS AND ITS 
CONTROL. 
BY 
DUDLEY MOULTON, 
ee 
Engaged in Deciduous Fruit Insect Investigations. 
IssuED SEPTEMBER 1, 1909. 
WASHINGTON: 
GOVERNMENT PRINTING OFFICE. & 
1909. 208109 
