




7 
SOUTHERN FIELD CROP INSECT INVESTIGATIONS. 
W. D. Hunter, In Charge. 
Prof. G. W. Herrick, of Cornell University, made a trip to Louisiana at the end oi the 
month to inspect the work on the boll weevil and on malaria mosquitoes. 
Mr. W. D. Pierce made a short trip during the month to Atlanta, Ga., for a conference with 
the State entomologist, and Thomasville, Ga., to arrange for cooper oil experiments between 
G. D. Smith, of this arena and the Cesccihs State Board of Entomology, and to Clarksville, 
Tenn., for a fouierence with the men engaged in tobacco-insect investigations. He also sigited 
Rofous points in the boll weevil infested territory. 
Mr. D. L. Van Dine visited Washington for a conference during the month. 
_Mr. G. A. Runner has closed his laboratory at Richmond, Va., and will hereafter be stationed 
at Clarksville, Tenn. He made a short trip to Schenectady, N. Y., in connection with the tests 
of X-ray control of the cigarette beetle. 
Mr. W. E. Dove has been assigned to horsefly experiments at Aberdeen, S. Dak. 
The following temporary field assistants have been appointed and detailed for investiga- 
tions of tobacco insects: Messrs. D. M. De Long, Charles Hauck, F. C. Liles, Frank G. Sorrels, 
Oakley M. Shelby, Mack S. Linebaugh, Samuel F. Grubbs, Carl A. Wickland, Richard K. 
Catlett, and Walter C. Nagle. 
Mesers. K. K. Bynum ‘and W. B. Williams have been appointed temporary field assistants 
and detailed for the investigation of the cotton boll weevil. 
Mr. Max Kishiuk, jr., ae been appointed a temporary field assistant and detailed to investi- 
gate the house fly at Deimmond: Md. 
TROPICAL AND SUBTROPICAL INSECT INVESTIGATIONS. 
C. L. Maruatr, In Charge. 
Mr. H. L. Sanford, inspector of the Federal Horticultural Board, recently detected a severe 
infestation of Targionia hart: (Ckll.) on yams from the Philippine Islands. This scale insect 
_ has also been previously taken on tubers received from the West Indies. 
A new quarantine inspection louse is nearing completion in the Mall near the corner of 
Twelfth and B Streets NW. In the future all nursery stock addressed to the Department of 
Agriculture will be delivered to this house for inspection, and, if necessary, will be grown in 
quarantine in a tightly screened greenhouse constructed for this purpose. 
Mr. E. R. Sasscer recently conducted some very interesting hydrocyanic-acid gas vacuum 
fumigation experiments with 30 bales of Egyptian cotton supplied by various New England 
cotton mills. The results of these tests indicate that the gas penetrates throughout the entire 
bale, and, in fact, adults of the common bean weevil (Bruchus obtectus Say), adults of the rice 
weevil (Calandra oryza L.), and larve of the clothes moths were killed at various points in the 
bales. This cotton has been returned to the mills, and is now being put through various milling 
tests in comparison with unfumigated cotton of a similar grade. All fumigated bales have been 
examined for residual gas, with the result that about five ten-millionths of a gram could be 
detected in each bale by the use of a very delicate test. 
TRUCK CROP AND STORED PRODUCT INSECT INVESTIGATIONS. 
F. H. Currrenven, In Charge. 
Mr. A. B. Duckett, scientific assistant, has just returned from a trip in New Jersey, where 
he has been investigating insects injurious to strawberries. 
Mr. F. R. Cole, scientific assistant, a graduate of Pomona College, Cal., formerly located 
at Pasadena, Cal., has been transferred to Washington, D. C. 

