whose fields of investigation are de- 

 scribed in the following pages — timber 

 harvesting and conversion ; silvicultural 

 relations; chemistry, composition, and 

 derived products of wood; timber me- 



chanics and structural research; wood 

 seasoning and moisture control; wood- 

 treating processes for protection and 

 service; wood pathology; and pulp and 

 paper. 



Timber harvesting 

 and conversion 



Through hasty and wasteful exploita- 

 tion, millions of acres of forest lands 

 have been left denuded, idle, and 

 abandoned which otherwise might to- 

 day be supporting their quota of pros- 

 perous communities. To obtain better 

 values from existing resources and to 

 safeguard future timber crops require 

 basic changes in timber cutting and 



conversion practice, presenting many 

 problems which research must help to 

 solve. 



Selective logging 



Laboratory field crews have demon- 

 strated on many lumbering operations, 

 north and south, that the cutting of 



Turning of wooden turpentine cups points the way to profitable utilization of 

 much worked-out timber. 



M-27617-F 



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