
ad, 
DECIDUOUS-FRUIT INSECT INVESTIGATIONS, 
A. L. Quaintance, In Charge. 
i) Mr. F. L. Simanton, who has been engaged in investigations of 
lerchard insecticides and spraying wachinery, with headquarters at 
Benton Harbor, Mich., has returned to Washington for the purpose of 
summarizing notes on the subject of his field investigations, prepa- 
sation of manuscripts and library work. 
Mr. H. G. Ingerson, who has been assisting Mr. Simanton at Ben- 
Fon Harbor, Mich., has also returned to Washington for the purpose 
of preparing notes on the subject of his field investigations and 
library work. 
FOREST INSECT INVESTIGATIONS. 
A. D. Hopkins, In Charge. 
a A recent inspection by Mr. T. E. Snyder of the experimental and 
[demonstration control project in the White Top Purchase Area, Tenn., 
and Va., conducted by the Forest Service under the advice and instruc- 
tions of Dr. A. D. Hopkins, shows that there is every indication from 
the relative number of black tops, brown tops and newly infested trees, 
that there is a marked decrease in the infestation and that a destruc- 
tive invasion has been checked. The following summary gives the num- 

l ber of infested trees located and treated and the results. 
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i SUMMARY 


| Feb. 1925. 
| 7 Number infested trees - 2,612 
| 1,712 within control area 
900 outside *" z 
Number trees not treated - 1,000 
100 within control area 
900 outside 9 " (within 4 or 5 miles) 
| March 1915. 
aT lumber trees treated - 1,612 
% treated - 61% 
_ Number infested trees - 102 
p 102 within control area 
¢ ? outside* " " 
f 
(*Reports indicate only scattering infestation.) 
% reduction - 74.4% 
The results of the preliminary examination in June 1915 and final 
inspection in November 1915, by Mr. Snyder, together with information 
supplied through the District Forester, shows that the treatment in 
March 1915, of about 60% of the infestation of the treated and adjacent 

