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infested bark and surface of the wood will effectually destroy the 
insects. In addition, the logs so treated will be protected next spring 
and summer from the attack of wood-boring insects, and thus be 
almost or quite as valuable for all commercial purposes as if cut 
from living trees. 
It is not necessary that all infested trees in the reserve or those of all 
other infested areas should be thus cut and barked, but it is important 
that a large per cent should be so treated in order to insure a sufficient 
reduction of the beetles to check their destructive ravages. 
SUGGESTIONS FOR PREVENTING FURTHER TROUBLE. 
It is believed that the prevention of further trouble may be effected 
by means of girdled and otherwise treated trap trees, but the best 
method of treating the trees and the proper time or periods to do the 
work remain to be determined. 
No experiments of this kind have been conducted with the rock pine, 
and it is not positively known when the beetles commence to fly or what 
is the period of their greatest abundance or swarms. Therefore it is 
suggested that a special line of experiments be conducted, between the 
1st of May and the Ist of September, to determine the best methods 
of providing trap trees and the best time to do the work to secure the 
desired end, viz, that of attracting the migrating beetles to certain 
trees or sections of the forest, where they can be subsequently 
destroyed by cutting the trees and removing the bark. 
TO PREVENT LOSSES FROM WOOD-BORING INSECTS AND WOOD-DESTROYING FUNGI. 
The evidence found relating to the work of wood-boring insects and 
wood-destroying fungi, which cooperate in effecting a rapid deteriora- 
tion of the trees killed by beetles, suggests that all trees should be cut 
within three or four years after they commence to die, the sooner the 
better, and be worked up into lumber, ties, mine timbers, and cord 
wood, in order to prevent the great loss of valuable products which 
would otherwise follow. Such material, if in excess of the demand 
for immediate consumption, might be stored where it would keep dry 
and be protected from fire. It would thus remain sound for many 
years and serve to supply the demand for material which would 
otherwise have to be drawn from the living timber. 
THE PROTECTION OF LIVING TIMBER. 
Since it is of the greatest importance that the living timber in the 
reserve should be protected and preserved for the heavy demands 
upon its resources which, owing to the vast mining, commercial, and 
other interests, it will be required to meet, the prevention of unneces- 
sary cutting on account of injuries, or alleged injuries, from insects 
should receive special attention. 
