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FOREST INSECT INVESTIGATIONS 
F. C. Craighead, Senior Entomologist, in Charge 
In the early part of December Dr. Craighead and J. A. Beal, ac— 
companied by L. Wyman, of the Southern Forest Experiment Station, spent 
about a week in northern Florida inspecting injury caused by the tur-—- 
pentine borer on experimental turpentining plots of the Forest Service. 
Of late this insect has been causing considerable apprehension on the 
part of owners of timber land who are attempting to practice forestry 
jn the coastal plains region. The scheme of management adopted calls 
for long-time, conservative turpentining operations, and ultimate utili- 
zation of the timber, in lieu of the more destructive methods of tur— 
pentining practiced in the past. This borer has been found to attack 
the faces of turpentined trees after they had been exposed from four to 
five years, causing serious defect in the butt log and a high percentage 
of windfall. It appears, however, that the problem may be easily handled 
by slight modifications in the present conservative standards for tur- 
pentining recommended by the Forest Service. 
About the middle of December J. M. Miller attended the meeting 
of the Society of American Foresters at San Francisco, Calif. 
All western field work has been closed up for the year and prac— 
tically all the men are now engaged in preparing reports of the last 
summer's activities. It has been found in California and Oregon that 
losses from the western pine beetle have generally increased during the 
year 1927. . } 
The time of J. C. Evenden in 1927 has largely been consumed with 
the preparation of recommendations for control on the large Bitter— 
root-Beaverhead project directed against the mountain pine beetle in 
lodgepole pine. The outbreak of the beetle has assumed stupendous pro-— 
portions, and hopes of complete control have been abandoned. The strategy 
now adopted is aimed at checking the southward spread of the center of 
infestation, so as to prevent its reaching the large merchantable bodies 
of lodgepole pine centering in and around Yellowstone National Park. 
Dr. T. E. Snyder returned to Washington in the first week in 
December, from a western trip, begun on September 16, which included 
visits to California, Arizona, and Hawaii. His attention was given to 
investigating damage to buildings by termites and aiding in the form 
ulation of building codes to prevent injury of that kind. Some of his 
activities while on this trip have previously been reported. Other in- 
formation is given in paragraphs which follow. 
For some time the Bureau of Entomology has advocated certain 
provisions to be included in building codes to prevent the damage just 
mentioned. Before going to the Pacific Coast Dr. Snyder visited Kansas 

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