ia dp 
Dr. F. W. Poos spent May 23 and 24 at the Ohio State University, 
Columbus, Ohio, discussing with Dr. D. M. DeLong certain taxonomic studies 
of the genus Empoasca. 
C. M. Packard, in charge of the field laboratory at West Lafay— 
ette, Ind., was in the Washington office on May 23 and 24, in consul-— 
tation with bureau officials regarding the problem of the Hessian fly. 
COTTON INSECTS 
B. R. Coad, in Charge 
In May Mr. Coad visited the field laboratory at El Paso, Tex., 
for the study of the pink bollworm, the one at Tucson, Ariz., for in- 
vestigating the thurberia weevil, and the one at Calexico, Calif., where 
investigations of the cotton leaf perforator are being conducted. He 
also inspected the activities of the Plant Quarantine and Control Ad- 
ministration in eradicating the pink bollworm in the Salt River Valley 
of Arizona. The various projects for the coming season were reviewed 
and future activities were outlined. 
David Isler, who has been in charge of investigations on cultural 
contro. of the pink bollworm, has been transferred to Tallulah and placed 
in general charge of the mechanical investigations of the Division of 
Cotton Insects. This work is conducted in cooperation with the Division 
of Agricultural Engineering of the Bureau of Public Roads. 
In May W. J. Moore and D. H. Ratcliff were appointed temporary 
field assistants. 
On May 7 C. A. Bennett, Associate Mechanical Engineer, Bureau of 
Public Roads, cooperating with the Delta Field Laboratory, Tallulah, 
visited Dallas, Tex., for tests upon an all-steel cotton drier, de- 
veloped by one of the prominent manufacturers of cotton ginning machin— 
ery, under plans and specifications issued from this laboratory. On 
May 9 he visited Houston, Tex., where he had been invited to address 
the employees of the Anderson Clayton Company upon the subject of cot— 
ton drying. About 200 cotton experts and classers from various places 
in Texas were present at the lecture. On May 21 he visited Skene, Miss., 
at the request of R. M. Dakin, who had applied to the Department of 
Agriculture at Washington for assistance in the installation of an ex- 
ceptionally large drier. Mr. Dakin has purchased two war-time driers 
of the Sargent type, each being at least 70 feet long by 7 feet wide. 
With these driers at his cotton gins, Mr. Dakin expects to harvest and 
gin his entire crop of several thousand bales by Thanksgiving. 
