4 CONTENTS. 



Suggestions for preventing losses 20 



Methods of combating the enemy and preventing losses from its ravages. 



To reduce the numbers 21 



Suggestions for preventing further trouble 22 



To prevent losses from wood-boring insects 22 



The protection of living timber 22 



Evidences of unnecessary cutting of living timber 23 



Suggestions concerning timber-cutting contracts 23 



Need of further investigation 24 



Cutting and barking the infested trees in winter 24 



The experiments of girdling, cutting, and treating trees 24 



