CONTENTS 



Page. 



Outline of trip, and localities visited 7 



Summary of work and results 12 



Information on the habits of Scolytids made the prime object 13 



Principal Scolytid enemies of forests of the Northwest 13 



Destructive Buprestid enemies of Hemlock, red fir, and Noble fir 17 



Forest-tree defoliators 17 



Beneficial insects and diseases 19 



General observations on forest trees and forest conditions 19 



General observations on some forest problems of the Northwest 22 



Consideration of preventives and remedies 25 



Summary and recommendations 26 



5 



