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Peelins method not effective against Douglas fir beetle.--W. D. 
Bedard spent the month of May in the field at Sullivan Lake, Idaho, and 
reports that "One of the outstanding developments of the month is the 
checking of the peeling method of control against the Douglas fir bee- 
tle. In the fall of 1931, infested trees were felled and the bark peel— 
ed, which was allowed to lie under the snow over winter. Early in May 
some 30 square feet of this berk was collected and placed in rearing 
cans in order to see if there would be any emergence from the beetles 
which normally overwinter concealed within the inner bark. On May 13, 
these beetles began to emerge and attack the green material placed with— 
in the cages. The result of this experiment shows that the peeling 
method of control against the Douglas fir beetle is indeed very ques— 
tionable and that the bark should be burned if the work is to be made 
effective." 
Environmental factors control locust borer.--Raiph C. Hall re- 
ports that in a spraying experiment at Columbus, Ohio, it was found that 
more than 85 per cent of the young larvae of the locust borer in the 
control trees "had been killed by natural causes by May 18 at the time 
when they were checked against the sprayed trees," No insect or other 
animal was observed in the act of destroying the larvae. 
The Tahoe bark-beetle control project.--At the request of the For— 
est Service, G. R. Struble, of the bark-beetle control project, Berke— 
ley, Calif., made a survey of the Lake Tahoe Control Project on the El- 
dorado National Forest, May 17 to 21. This project was initiated in 
October, 1931. The owner of the Anita Baldwin Estate deposited $1,000 
with the Forest Service to carry out the work on its private lands, a 
tract of 2,000 acres. The project includes also about 160 acres of na— 
tional forest land. In both the fall and spring surveys a total of 258 
infested trees, with a volume of 358,450 board feet, have been marked 
for treatment. 

Western pine beetie follows fire.— An examination of the Sugar Hill 
fire plots on the Modoc National Forest was made by Dr. K. A. Salman in 
May. These plots were establishea in 1929, following a severe fire which 
swept the area during the preceding summer. Of the 155 trees tagged on 
these plots 17 were found that had been killed during the season of 19351; 
eight were summer-—brood trees, two windfalls, and seven winter—brood 
trees. The attacks of 1931 were heavy, and the western pine beetle pre- 
dominated as the cause of death. 
Cooperation in reporting destruction of insects.—-At the request of 
the Oregon State Forester, F. P. Keen, of the Portland, Oreg., field lab— 
Oratory, attended the conference of State Fire Wardens at Salem and spent 
a morning with them in discussing how to recognize outbreaks of destruc— 
tive forest insects, particularly the hemlock looper. A plan of cooper- 
ation was developed whereby each fire warden in zones of possible looper 
damage will act as a looper scout. During October of each year this 
will be again called to their attention and any suspicious flight of 

