56 . SOME INSECTS INJUKIOUS TO FORESTS. 



majority of instances a great saving can be accomplished if the 

 matter is promptly taken in hand, and as many trunks as possible 

 barked before or shortly after the larvse enter the wood. In each 

 case the holder of storm-felled timber must decide for himself. If 

 the cost of barking the felled trunks is low enough to give a fair 

 profit on the material saved from injury, it is a simple proposition 

 of business economy. In any case the matter should be given 

 careful consideration before all effort to prevent loss from the rav- 

 ages of the sawyer is abandoned. 



SUMMARY OF REMEDIES. 



If possible saw all storm-felled trunks into logs and place the logs in 

 water before the larvse enter the wood, or within forty days after the eggs 

 are laid. If it is impossible to place the logs in water, they should be 

 barked within forty days after the first egg pits are observed in the bark. 



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