STONE AND WOOD BORERS 355 



of protecting wood is to force hard paraffin in a melted 

 condition by pressure into the pores. The wood becomes 

 wonderfully firm and waterproof. Neither damp and 

 mould, nor boring insect, nor shrimp can then penetrate 

 it. This method was introduced some years ago, but I do 

 not know whether it has been largely used. 



