It will be more solid and stronger, in proportion to thick- 

 ness; will not be more, if as much, inclined to warp, and 

 from the ability to make boards of any width, and from 

 availability in using as inside finish and in other ways will 

 be more desirable. These varieties of lumber or lumber sub- 

 stitutes are somewhat more fully outlined and suggested to 

 the Conservation Committee and the Forestry Department 

 in communication sent in reply to questions. 



It will consist of cutting thin veneering from steamed 

 logs and made into either three or more ply of thin sheets 

 cemented together, or two or more ply cemented together 

 by cotton cloth or sheeting placed between, or by another 

 process of using pine or other wood by steaming and grind- 

 ing the wood in the manner in which paper stock is now 

 made from which either with or without addition of what 

 is known as chemical pulp, which enters into paper making 

 to toughen it, a strong cardboard or wood board can be 

 made that will supply demand for many uses. After the 

 board has been manufactured, it may be saturated with a 

 sizing or glue, it may be painted or varnished, either before 

 or after it has been placed in buildings or structures. The 

 cost of these substitutes will be more per square foot to 

 manufacture than the old style of rapidly sawed lumber. But 

 as so much greater amount of surface measure can be made 

 from a given quantity of wood of any size or length that 

 does not contain large knots, the extra expense may be 

 more than balanced by the increased product, and the en- 

 largement of the supply of available material. As finishing 

 lumber, it will probably at first bring as high or higher 

 prices. But as these grades get still higher, it will operate 

 on the one side to develop these processes of manufacture 

 and on the other to introduce the new kinds to bring them 

 into use for the purposes to which each may be fitted. 



The final or general outcome of these thin composition 

 boards, when coupled in manufacture, more or less, with 



