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FOREST INSECT INVESTIGATIONS 
F. C. Craighead, in Charge 
Early in May Dr. Craighead spent two days at Syracuse, N. Y., 
sonsulting with Dr. M. W. Blackman and Dr. H. J. MacAloney about the 
work on the white-pine weevil. 
J. C. Evenden reports that field activities have begun in Mon— 
tana with the initiation of several control projects of the Forest Ser— 
vice. The late season and considerable snow have somewhat handicapped 
operations. 
J. E. Patterson reports that, although snow still lies on the 
ground in the Crater National Park, the control of the mountain pine 
beetle by the sun-curing method has been progressing favorably, and 
that unusually high temperatures for this season of the bee’ have been 
obtained under the bark of the felled trees. 
Contributions from the Gipsy-Moth Laboratory 
Dr. H. L. Dozier, Entomologist of the Delaware Agricultural Ex— 
periment Station, in a letter dated May 9, 1929, wrote as follows con— 
cerning the use of fish oil as an adhesive in sprays: "We have tried 
out the fish oil in most of the combinations and have found it compat— 
ible and very satisfactory. Practically every grower who has used this 
material in our State is not only satisfied but rather enthusiastic 
over same. In fact, to my own knowledge there have been twenty-one 
parrels shipped to this State for use in orchard work this season. I 
have had inquiries in regard to the material from eighteen States and 
Canada." Dr. Dozier became interested in the use of fish oil as an ad— 
hesive through experiments carried on by C. E. Hood, of the Gipsy Moth 
Laboratory. 
Messrs. Collins, Hood, Barnes, and Potts, of the Gipsy Moth Lab— 
oratory, discussed various matters having to do with insecticides with 
Dr. T. J. Headlee, of the New Jersey Experiment Station, when he visited 
Boston on May 10. 
Visitors to the Gipsy Moth Laboratory in May were Dr. H. W. Al— 
len and G. J. Haeussler, of the field laboratory at Moorestown, N. J., 
May 2: B. J. Landis, of the field laboratory for investigations of the 
Mexican bean beetle, Columbus, Ohio, May 4; R. W. Burrell, of the Japa— 
nese Beetle Laboratory, Moorestown, N. J., and Prof. J. A. Manter, of 
the Connecticut Agricultural College, and two of his entomological stu— 
dents, May 7. Mr. Landis spent several days at the laboratory familiar— 
izing himself with the work being done with parasites. 
Dr. J. R. Hobbs, a student at the Harvard Medical School, has 
received a temporary appointment, beginning May 1, to study certain 
diseases of the gipsy moth. 

