tt hee 
of their use in an actual. control project, where ordinary labor was em- 
ployed, an experimental project was instituted on the Kaniksu National 
Forest. This: project. was started on September 11, and was closed the 
first of ¢ October, : as after that date successful. results could not be ex- 
pected. A-tctal-of.25 men were employed, and though the project was. 
badly handicapped by inclement weather, which prohibited all work’on.a 
number of days, approximately 500 infested trees were treated. Two 
methods which: had previously given the best satisfaction, and which were 
based upon the ‘same general principles, were tested. In order to apply 
“’ the poison to the entire circumference of the tree, it was necessary to 
remove a narrow band of bark and. to cut a shallow saw-kerf around -the 
tree. A rubber band was then stretched over this kerf, and securely 
stapled in order to prevent leaks. The poisonous Boniiton was then. ap- 
plied to the kerf ‘through a Spile attached with a rubber hose to a large con- 
tainer above. ‘The other method was to tack a tin collar around the tree 
just below the saw-kerf. As these collars are shnped like the arc of a 
large circle, the flare produces a cup around the tree, into which the 
poisonous solution is poured. Of these two methods the tin collars were 
‘apperently eusier to.apply, and permitted a greater output per man-day. 
The final results of this project. will not Ke ascertained: until next 
ae ‘when the treated trees will be examined to determine the brood 
. ortelity.; If successful, it is.believed that the adoption’ of this method 
aT greatly reduce. the: cost of. controlling the mountain pine beetle in 
white ae as: the output: per. man— day can be increased by at least 250 
Bepecn tt pee © ee ee ents Day am ed 
Wes Western _pine fe beetias successful r controlled: -~Fy P, Keen Portlaae 
. Oreg., re} reports: "Last year an.epidemic of the western pine beetle sweeping 
through. ‘the ponderosa. pine stands of central> Oregon threatened to. destroy 
the commercial value of large timber tracts. ‘In three years" time,on the 
Ochoco National Forest and adjacent private lands ‘the beetles had killed 
an.average of:10 ‘percent « ofthe stand and in sone sections fully -50 per- 
‘cent of the ‘timber: was de stroyed. The private ‘timber owtiers and: Forest 
‘Service joined. forces and in. the fall of 1932, with an expenditure of 
$31,000,‘ covered 36,006 acres with an intensive control campaign. in which 
come 16,000: infeste ‘ trees were felled and burned. ‘The results of’ this 
work. wore checked during October by surveying emple plots distributed 
‘ through. the area. .It was found that the infestation on the treated areas 
had been reduced by 85 percent. Part of this reduction was due to the 
freezing of broods during the pyeanei analy cold winter of 1932-33, for on 
“untreated ‘arzas a natural reduction of 48 percent was noted. However, 
the additional 37 percent reduction was evident ty due to the effect of 
the control work. Moreover, Boe oe the remaining infestation was com- 
posed of such weak broods yea on 20,000 acres no further control work was 
recommended for this yoar. 

Pine region checked for barkbeetle activity:--"With the help of field 
officers of. ti the For est Service and Indian Service," reports Mr. Keen, 
"78° B20Lacre plots distributed througi: the ponderosa pine forests of 
Oregon and Washington were recently survey ed to determine the damage done 
a 
