FOREST PRODUCTS 173 



Products classified according to their uses may be listed as follows: 



1. Construction materials, such as lumber, timber, cross ties, poles, 

 piling, posts, mine timbers, bridge planks, and shingles. 



2. Chemical derivatives such as pulpwood, naval stores (turpen- 

 tine and rosin), tannin, dyewood, hardwood and softwood distillation 

 products, rubber, and maple sugar. 



3. Wood containers, such as slack and tight cooperage, boxes and 

 crating materials, and veneers, which are largely used as containers. 



4. Miscellaneous products, such as fuelwood, which next to lum- 

 ber is the most important product of the forest, excelsior, vehicle 

 stock, cork, novelties, and toys. 



Other classifications of forest products may be based upon methods 

 of manufacture, that is, primary products of the forest which are 

 not further refined or manufactured except in a crude way in the 

 woods, for example, poles, piling, posts, hewed cross ties and timbers, 

 mine props, and lagging. Manufactured products may include lum- 

 ber, saw timbers, sawed cross ties, shingles, cooperage, veneers, or 

 those further refined or remanufactured from lumber such as boxes 

 and crating materials, some vehicle stock, including automobile body 

 parts and planing mill products. Other products may be reduced 

 chemically, as paper pulp, rayon or artificial silk, cellophane, hard- 

 wood and softwood distillation products, tanning materials, dyestuffs, 

 and many miscellaneous derivatives obtained from the sap or wood, 

 such as naval stores, rubber, and maple syrup. The volume of wood 

 used for various products is generally expressed in terms of the indi- 

 vidual commodity, such as board feet, cords, individual pieces, etc., 

 as cross ties, poles, piling, or in cubic feet. For statistical purposes 

 the government generally converts these materials into cubic feet, as 

 indicated elsewhere. 



Lumber is manufactured and sold for a great variety of purposes. 

 The principal uses are as follows: 



PERCENTAGE OF TOTAL LUMBER 

 USED FOR GENERAL CONSTRUC- 

 TION AND BUILDING PURPOSES 

 ITEMS 



Construction 63 



Millwork including sash, doors, trim and other planing 



mill products 9 



Remanufactured products as follows: 



Boxes and crates 13 



Railway car construction 3 



Furniture 3 



Vehicles 3 



Miscellaneous forms manufactured from lumber 6 



Total . 100 



