
. 5 
Mr. F. C. Craighead spent about a week in Tyrone, Pa., in the study of insects affecting a 
plantation of poplar trees and the making of general observations on insects affecting forest 
and shade trees. 
Mr. W.S. Fisher is now at Harrisburg, Pa., where he expects to spend two or three weeks 
in continuation of investigations on hickory insects with special reference to the hickory bark- 
beetle, and a general study of forest insects. 
Dr. Hopkins went to Kanawha Station, W. Va., on July 29. He expects to remain there 
about a month in the further study of the forest insect problems enumerated in last month’s 
letter. 
Although the Lyctus powder-post beetles, and especially their work, are well known, their 
biology, and particularly their method and place of oviposition, have remained obscure. During 
the past month Mr. Snyder has concentrated his efforts on securing this information. After 
considerable painstaking work his efforts were crowned with success. He observed the beetles 
in the act of oviposition and located the eggs, which he found of unusual type for Coleoptera. 
He is now working out a full seasonal history of the insect. 
SOUTHERN FIELD CROP INSECT INVESTIGATIONS. 
W. D. Hunter, In Charge. 
Mr. W. D> Pierce spent the latter half of the month in determining the status of the boll 
weevil in the region first invaded during the fall of 1914, and in visiting the laboratories at 
Clarksville, New Orleans, Thomasville, and Batesburg. 
Mr. G. N. Wolcott, of the Porto Rico Board of Agriculture, was in Washington on July 27. 
He will attend the meetings at San Francisco and in the fall spend some little time as a col- 
laborator at the laboratory investigating sugar-cane insects at New Orleans. 
Mr. R. I. Smith, formerly of the North Carolina Experiment Station, but recently located in 
Porto Rico, has been appointed a quarantine inspector by the Federal Horticultural Board. 
He will assume his duties on August 16. He will be stationed at Boston to have supervision 
over the imports of foreign cotton, and the erection of the fumigating plant which will probably 
be established at that place by the 1st of January. 
Mr. W. D. Hunter visited Boston, Albany, and other points in the northeast in connection 
with the work of the Horticultural Board during the early part of the month. 
Mr. Reuben Cox of the Mississippi Agricultural College has been appointed a temporary field 
assistant with Mr. D. L. Van Dine on the investigation of malaria mosquitoes. 
Mr. A. H. Jennings will be stationed in New York City for some time on mosquito work. 
TROPICAL AND SUBTROPICAL INSECT INVESTIGATIONS. 
C. L. Maruarr, In Charge. 
At a recent meeting of the- directors of the Florida Citrus Exchange, resolutions heartily 
indorsing the work against citrous pests, conducted by Mr. W. W. Yothers, of this bureau, 
were adopted. | 
Mr. Yothers reports that the groves under his supervision for treatment against citrous 
pests give promise of a yield equally as good if not better than in 1914, due to following a 
spraying scheme which he perfected during the past year. 
