

rere 
effective against the full-grown adults than the caustic sprays, No 
temperatures below freezing have occurred here vefore the avove dates, 
I E, R, Van Leeuwen, who has deen associated with M, A, Yothers at 
Medford, Oreg,, has been transferred to Riverton, N, J., where he will be 
assigned to duty in connection with the Japanese beetle project. 
C, H, Hadley, in charge of the Japanese beetle project, writes as 
follows: 
There has been in operation at the Japanese Beetle Laboratory 
at Riverton, N. J,, during the winter an experimental refrigerating 
plant, which has an experimental range of from -3°F, to ~32°F, 
This outfit has been specially designed for use in connection with 
experiments to determine the effect of low temperatures upon the 
eruos of the Japanese beetle and also upon plants, the soil-balls 
of which, surrounding the roots, are infested with gruos. Very 
satisfactory results have been obtained in so far as killing effect 
upon the grubs is concerned, and to date at least no apparent seri- 
cus injury to plants subjected to comparatively low temperatures 
has been observed, It is planned to publish a description of the 
refrigerating outfit later on, after adaitional work has been done 
and the limits of usefulness of the apparatus determined, 
The Japanese Beetle Club was organized at the laboratory several 
months ago and includes in its membership not only members of the 
bureau but also other men in any way officially connected with the 
Japanese beetle project, Meetings have been held regularly twice 
&@ month and severai special meetings have also been held. A very 
“entertaining and successful program has been followed, One of the 
purposes of the club is to encourage entomological interest on the 
part of its members along lines other than the Japanese beetle work, 
and in this connection papers have seen presented by the members 
dealing with entomological problems in other parts of the country. 
Dr. L, 0, Howard recently spoke before the club in a most entertain-~ 
ing manner on the development of economic entomology in this country. 
Other recent speakers who have addressed the Japanese Beetle Club 
have included Dr, E, D, Ball, Director of Scientific Research, of the 
Department of Agriculture, and Dr. D, Borodin. Dr. Ball spoke on the 
subject "The Training ani Compensation of the Scientist," while Dr. 
Borodin, who is in charge of the New York office of the Russian 
Bureau of Applied Botany and Entomology of the State Institute of 
Experimental Agronomy, gave a general talk on the status of economic 
entomology in Russia at the present time. C. R. Woodward, of the 
New Jersey Agricultural Experiment Station, New Brunswick, recently 
addressed the club on the subdject of the preparation of scientific 
papers. From time to time a number of visiting entomologists have 
attended certain of the meetings, 
Among recent visitors at the Japanese Beetle Laooratory were 
Messrs. H. B. Weiss and R, B, Lott of the New Jersey State Devart- 
ment of Agriculture, Dr, T. J, Headlee, State entomologist of New 
Jersey and E, R. Selkregg, formerly of the Bureau of Entomology. 

