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FOREST—INSECT INVESTIGATIONS 
F. C. Craighead, in Charge 
J. M. Miller, in charge of the field laboratory at Palo Alto, Cal— 
if., accompanied by H. Basil Wales, Assistant District Forester, District 
3, of the Forest Service, made an examination of the insect-control 
project at Prescott, Ariz., November 12 to 18. This project covers an 
area of 15,000 acres of yellow pine, in which the primary insect los— 
ses are due to Dendroctonus barberi Hopk., associated with several spe-— 
cies of Ips. The first control work was carried out during the win- 
ter of 1927-28, and resulted in a 75 per cent decrease of losses dur- 
ing the following season of 1928. During the same period an increase 
of 300 per cent developed in adjoining areas where no control work was 
done. Maintenance control work on the Prescott area during the current 
winter was agreed upon by the Forest Service. 
At the request of a commercial firm on the Pacific coast, which 
specializes in control of termites, J. M. Miller and Dr. H. E. Burke, 
of the field laboratory at Palo Alto, Calif., and Professor R. W. Doane, 
of Stanford University, spent the afternoon of November 5 viewing one 
of their control operations in Palo Alto. All the soil beneath the 
houses under treatment is impregnated with a patented gas, and all the 
woodwork sprayed with a patented paint. The work is apparently done 
thoroughly, and is guaranteed for six years. 
On November x7 the annual conference of the workers attached to the 
field laboratory at Palo Alto was held, to review the work conducted 
during the field season of 1928 and to discuss plans for the work to 
be done in the coming winter. J.M. Miller, Dr. H. E. Burke, F. P. Keen, 
W. D. Edmonston, J. E. Patterson, and H. L. Person were present. 
Albert Wagner and G. R. Struble made a trip to North Fork, Calif., 
December 5 to 8, to collect material containing overwintering stages 
of the western pine beetle, for use in laboratory tests this winter. 
Contributions from the Gipsy—Moth Laboratory 
Visitors to the Gipsy-Moth Laboratory in December were, December 6, 
L. B, Scott, in charge of the field laboratory at Silver Creek, N. Y., 
December 7, Dr. H. L. Parker, in charge of the field laboratory at Hyéres, 
Var., France, December 12, C. H. Hadley, Plant Quarantine and Control 
Administration, Riverton, N. J., and December 19, Dr. H. M. Tietz, De— 
partment of Zoology and Entomology, Pennsylvania State College. 
C. W. Collins, T. H. Jones, R. T. Webber, Dr. M: T. Smulyanj Dune 
Barnes and S. F. Potts, all members of the staff of the Gipsy—Moth Lab— 
Oratory, attended the New York meetings of the American Association for 
the Advancement of Science, which were held December 27, 1928, to Jan— 
uary 2, 1929. At the meetings of the American Association of Economic 
Entomologists, held in connection with the meetings named, two papers 
were presented, one by C. W. Collins and J. E. R. Holbrook, and the other 
by D. F. Barnes and S. F. Potts. 
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