
7 
FOREST INSECT INVESTIGATIONS. 
A. D, Hopxins, In Charge. 
Messrs. H. G. Champion, of the University of Oxford and the Indian Imperial Forest 
Service, and T. E. Snyder spent some 10 days during January touring lumber mills in the high 
mountains of West Virginia in the study of the industry and the insects involved. While 
visiting the Union tannery at Davis, W. Va., they were informed by the manager that, following 
recommendations to prevent injury by the tanbark borer (Dinoderus substriatus Payk.), they 
used all hemlock tanbark before it was 4 years old. Dr. Hopkins visited this tannery in 1901 
and found that out of a total of 20,000 cords of bark about 10,000 were badly damaged by 
_ this beetle. On close investigation, he found the damage was practically confined to bark 
that was from 2 to 7 years old, and no appreciable damage was done in bark less than 3 years 
old. Accordingly he recommended that, in order to avoid this loss, older bark be used first, 
and that no bark be kept for a longer period than 3 years. Thus, by following the suggestion 
then made, enormous loss has been prevented in this tannery alone. 
SOUTHERN FIELD CROP INSECT INVESTIGATIONS. 
W. D. Hunter, In Charge. 
U. C. Loftin left for Cuba where he will be engaged for several months in the study and 
collection of parasites of sugar-cane insects and the investigation of the relation between certain 
systems of culture and the sugar-cane borer. 
HK. A. McGregor has arrived in Washington from his station at Batesburg, S. C., for consul- 
tations and studies which will keep him in the city for about a month. 
D. L. Van Dine made a trip to Ithaca and New York City during January to confer with 
entomologists and members of the medical profession regarding his work on malarial mosquitoes. 
W. V. King was in Washington for the purpose of obtaining data necessary to complete a 
thesis which he is soon to present to the faculty of Tulane University at New Orleans, La., 
for the degree of doctor of philosophy. 
F. C. Bishopp, box 208, Dallas, Tex., has undertaken the taxonomic study of fleas. He 
has probably one of the largest collections in the United States at the Dallas laboratory but 
desires to obtain additional specimens from all parts of the country. It will assist greatly in his 
studies if material of this kind is sent directly to him. 
TROPICAL AND SUBTROPICAL INSECT INVESTIGATIONS. 
C. L. Maruatt, In Charge. 
Mr. E. R. Sasscer, now with the Federal Horticultural Board, reports as a result of his 
inspection of the Introduction Garden at Miami the finding of a new and dangerous scale insect 
infesting mangoes, namely, Lecaniwm (Coccus) mangiferae. Incidentally he saw something of 
Mr. Yothers’s work in Florida and reports as an eyewitness some remarkable demonstration 
results from spraying, in which the fruit output was enormously increased and the quality 
much improved as a result of the treatment. 
Mr. J. R. Horton, in charge of the Louisiana citrus insect work, who was in Washington 
for consultation and work on his reports, has returned to New Orleans, La. 
The Mediterranean fruit-fly force at Honolulu now includes, in addition to the leaders, 
Dr. Back and Mr. Pemberton, also Messrs. Willard, Banks, and Maxwell, Ah Fook, a Chinaman, 
~ and Muto, the J ap. Aside from Muto, these men are all connected with the inspection service. 
