DEFECTS IN TIMBER CAUSED BY INSECTS 



29 



The loss to seasoned hardwood products ranges from 10 to 50 per 

 cent, sometimes representing a loss of thousands of dollars to a single 

 manufacturer or dealer who neglects to adopt the proper preventive 

 measures. The affected articles are not onlv reduced in value, but 



> 



Fig. 31. — Powder-posted seasoned hickory stock in the rough damaged by Xiilobiops 

 basilare. A, end of bolt ; B, end of section of bolt ; C. planed section of damaged 

 bolt 



frequently are rendered worthless for the purposes for which they 

 are intended. In the aggregate the direct financial loss that has been 

 caused by these beetles in this country has amounted to hundreds of 

 thousands of dollars. The loss increases with the length of time the 

 infested stock is held in storage ; the wood may be reinf ested by many 



