, rae a 2 Abn , - | 
- 
, i 
“all : 4 F 
FOREST INSHCT INVESTIGATIONS. (Continued). 













































Meeptember, 1914. a careful cruise was made by Entomological Assist- | 
Me Milier and Mr. Sullivan of the areas treated in 1913, which. showed | 
Me removal of from 74% to 99% of the infestation within the control 
mea resulted in a reduction of from 33% to 87% in the infestation of 
peas compared with that of 1913. : “ 
With thé present season’s control work, it is expected that the depre- 
"Dy Dendroctonus monticolae Hopk., which in past years has killed 
0% to 100% of the lodgepole pine over vast areas in the Toulumne 
amped, will be brought under complete control. 
In the demonstration control project with the McCloud River Lumber 
yy an 1914, 1,076 infested yellow pine trees, averaging 27 inches in 
fr; were treated at an average cost of $2.34 per tree. Work on this 
G Was begun in May, 1913, when 236 infested trees were treated, with- 
Berea of 4,520 acres. This work was done merely to give instructicns 
sthods, yet a recruisé in September, 19135, and again in the spring of 
@eeenows a reduction in the infestation within the area of over 857 . 
iS 6stimated that only about 75% of the infestation was disposed of on 
iijacent to this area in 1913, | . 
Mm both of these control projects, the owners have borne all of the 6x- 
pexcept the salaries of the entomologicali rangers assigned to super- 
the carrying out of the practical details of the methods recommended. 
demonstration projects in California are of special interest because 
Bye led to the adoption of a regular insect control policy by the of- 
B® of the Yosemite National Park and by one of the largest companies 
Wate owners of timber and manufacturers of lumber in the State. The 
‘Service is also becoming active in that State in taking up control : 
the National Forests. | 
4 fer 
PREVENTING SPREAD OF MOTHS. 
a. A. F. Burgess, In Charge. 
‘The scouting force of this branch now has 50 parties of men in the 
1a. the entire boundary of the quar ined area in Maine has been cove 
Mee total of 59 towns having been scouted, and only four have been 
fMnd infested. On the western border of infestation about 125 towns have 
em scouted and in some of these the men are now working. Some western 
d has been noted. Favorable weather has enabled the force to make 
nt progress this year. Scouts arg now working at the recently found 
mean Rutherford, N. J. and at Mt. Kisco, N. ¥. At Mt. Kisco a very 
cable decrease in infestation has been noted. As wany as 325 men have 
nh employed this season. 
"Phe adults of the cankerworm are unusually abundant this autumn and 
erpillars of this insect are likely to do considerable damage in eastern 
Bachusetts in 1915 unless careful spraying is done. x 
The quarantine on Christmas trees and greenery is becoming better un- 
stood py the people in the gipsy-moth area and the danger of dissem- 
ng egg-clusters of the moth through the careless shipment of holiday | 
ations is much less during the present season. Two men are kept busy 
ton for two or three weeks prior to December 25 cnuecking shipments by” 
gs and watching offices, 
a 
ws 
