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R. Wooldridge, of the gipsy-moth laboratory, spent March 23 and 
24 at an isolated gipsy—moth infestation in Milan, N. Y. Milan is about 
9 miles east of the Hudson river in the so-called "gipsy moth barrier 
zone." The special object of Mr. Wooldridge's trip was to secure infor— 
mation concerning any natural enemies that might be present in the in- 
festation. Puparia of two tachinid flies, Compsilura concinnata Meig. and 
Sturmia scutellata R. D., were found. The discovery of the presence of 
the latter is of particular interest because the laboratory has no records 
of the parasite having been previously taken in New York State. 
Visitors at the gipsy-moth laboratory during March included the 
following: S. A. Rohwer, Assistant Chief, Plant Quarantine and Control 
Administration, and W. A. Osgood, New Hampshire State Moth Work, on 
March 10; Nelson Trafton, Maine Department of Agriculture, on March 14; 
B. Connor, Business Manager, Plant Quarantine and Control Administration, 
on March 18; and M. P. Jones, Extension Entomologist, Bureau of Entomology, 
on March 27. . 
JAPANESE-BEETLE AND ASIATIC-BEETLE RESEARCH 
C. H. Hadley, in Charge 
On March 3 W. E. Fleming and F. E. Baker, of the Moorestown, 
N. J., field laboratory, and V. A. Johnson and C. Shrieber, of thesoame 
den office of the Plant Quarantine and Control Administration, left 
for Milford, Del., to take samples of poisoned soil for arsenic analysis. 
The period from March 3 to 5 was devoted to taking these samples in the 
different nurseries in Delaware, Maryland, and Virginia. 
C. B. Tilley, of the Grasselli Chemical Company, stopped at the 
laboratory on March 18 to discuss the use of barium fluosilicate as a soil 
insecticide. 
On March 16 E. R. Van Leeuwen returned to his regular dutyeau 
the laboratory after a furlough of three and one-half months, during 
which period he was engaged as an instructor for the Davey Tree Expert 
Company of Kent, Ohio. 
On March 24 C. H. Hadley and W. E. Fleming attended a conference 
in New Brunswick, N. J., with T. J. Headlee, E. E. Evaul, ER. G. Rex, 
and P. A. van der Meulen, in regard to the control of the larvae of the 
Japanese beetle in lawns. 
Members of the laboratory staff have held frequent conferences 
with specialists from the Camden office of the Plant Quarantine and Con— 
trol Administration in regard to the different control measures and the 
cooperative work now in progress. 
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