ars ny 
E. E. Atwood, Junior Entomologist, stationed at the Gipsy Moth 
Laboratory, resigned August 31. He will teach in the high school at 
Haverhill, Mass. 
R. L. Wallis, a graduate of the Colorado Agricultural College, 
has been appointed Junior Entomologist, to report for duty at the Gipsy 
Moth Laboratory on September l. 
Dr. F. C. Craighead spent August 18 to 23 at the Gipsy Moth Labor— 
atory. 
C. W. Collins, T. H. Jones, M. T. Smulyan, and J. V. Schaffner; 
Jr., of the Gipsy Moth Laboratory, attended the Fourth International 
Congress of Entomology at Ithaca, N. Y., August 14 to 16. 

TROPICAL, SUBTROPICAL AND ORNAMENTAL PLANT INSECT INVESTIGATIONS 
4. C. Baker, in Charge 
In po ucre es the final plans were completed for the Northwestern 
Laboratory at Puyallup, Wash. The details of construction of the lab— 
1 re being handled for the growers by the Commissioners 
oratory pi Pale a, 
of Pierce County, and the first bids were received on September 24. This 
jaboratory will be devoted to the study of insects attacking ornamentals 
in the Northwestern States. The main building will be 32 by 40 feet and, 
besides office space, will contain laboratories for the chemical and 
biological phases of the work, dark room, cold room, etc. The plant will 
have a 75-foot greenhouse for experimental work under glass, which will 
be aon into three 25-foot houses, permitting varied conditions of 
culture and treatment. This laboratory is being handled by Mr. Doucette, 
who has had considerable experience with pests of ornamentals in Pennsyl—- 
vania, California, and the Northwest. 
In September, also, the minor details of construction of the Mex— 
ican Laboratory were completed. This plant, supplied by the Mexican 
authorities through the cooperation of the Oficina para Defensa Agri— 
cola, is composed of two concrete buildings with suitable grounds. The 
one building contains a large office and a laboratory for the study of 
the qualities and composition of different host fruits in relation to 
infestation by the Mexican fruit worm. This building also contains a 
chemical storeroom, engine room, and bath. The second building contains 
Six laboratory rooms, arranged on both sides of a central covered passage 
through which trucks can be driven to the doorways of the laboratories. 
In this building the various pieces of control equipment have been in- 
Stalled. These will permit the control of climatic conditions such as 
temperature, humidity, and atmospheric pressure, so that climatic condi- 
tions in any fruit-growing region of the United States may be duplicated. 
Here the fruit worm will be grown and studied under conditions as nearly 
aS possible like those of American regions to which it may gain access. 
