INSECT DEPREDATIONS IN NORTH AMERICAN FORESTS. 95 



The best way to utilize the factors of natural control is to become 

 their allies and assist in the reduction of the enemy, rather than to 

 try to make them our allies through artificial introduction or dissem- 

 ination. 



A large percentage of the waste caused by insects can be prevented 

 by the utilization of infested material, and at the same time, without 

 additional expense, this will contribute greatly to the control of insects 

 which cause such waste and also prevent injuries and depredations in 

 the futui'e. 



Under past conditions the poor management or neglect of the 

 average forest has contributed to the increase of depredations by 

 insects. 



Under present conditions of better management of local forests 

 and of the more progressive manufacturing enterprises much is 

 being accomplished toward the reduction of losses. In the average 

 forest, and in the average business enterprise dealing with forest 

 products, present conditions are little better than in the past. This 

 is largely due to a lack of appreciation of the importance of the sub- 

 ject and failure to realize the oi)portunity and practicability of pre- 

 venting a large percentage of the loss. 



