WEST VIRGINIA GEOLOGICAL SURVEY. 



95 



applications during recent years have demonstrated that some 

 of the most destructive insect enemies of American forests and 

 manufactured and utilized products can be controlled and ser- 

 ious damage prevented with little or no ultimate cost over that 

 involved in good forest management and business methods. 



"It is evident that if the information now available 

 through publications of the Department of Agriculture and 

 through direct correspondence with its experts is properly util- 

 ized in the future it will result in the prevention of the equiva- 

 lent of at least 30 per cent of the estimated annual waste of for- 

 est resources that has been caused by insects within recent years 

 and thus contribute greatly to the conservation of the forest 

 reosurces. This can be accomplished as follows: 



"(1) By the adoption or adjustment of certain requisite 

 details in forest management, in lumbering and manufacturing 

 operations, and in storing, transporting, and utilizing the pro- 

 ducts which, at the least expense, will bring about the neces- 

 sary reduction of the injurious insects and unfavorable condi- 

 tions for their future multiplication or destructive work. 



''(2) By the adoption of policies of control, based upon 

 expert technical knowledge or advice relating to the species, 

 habits, life history^ and natural enemies of the insects involved, 

 and methods for their control, supplemented by expert knowl- 

 edge or advice on the principles of technical and applied for- 

 estry in the proper management, care, and utilization of the 

 forest and its resources and still further supplemented by 

 practical knowledge and experience relating to local conditions 

 and facilities favorable and unfavorable for successful appli- 

 cation according to a given method or policy of control. 



''(3) By reliance on technical advice furnished by recog- 

 nized experts in forest entomology and forestry as a basis for 

 success in practical application by the owner or forester. 



"(4) By utilization of so-called matured timber, and 

 especially dense or pure stands of such timber, thus removing 

 one of the favorable conditions for rapid deterioration through 

 attacks by wood-boring insects or death through the attacks of 

 destructive bark-boring or defoliating insects. 



