Standardhation of Instruction. 379 



Such institutions are able to specialize in this subject and give 

 advanced courses in it. Xo effort should, however, be made in 

 a general course to give a thorough training in timber testing. 

 That belongs to the specialist. 



Chemical Properties of Wood. Under this head may be in- 

 cluded the chemical composition of wood and of minor forest 

 products ; the carbo-hydrates, the hydro-carbons ; tannin and 

 dye stuffs ; properties governing the fuel value of w<^d ; charcoal ; 

 destructive distillation ; and properties affecting durability. 



In connection with the course in Forest Products may be con- 

 sidered chemical processes used in the manufacture of wood pulp, 

 in the wood distillation industries and in the naval stores indus- 

 tries, unless this is given, as in some institutions, in a separate 

 course of Applied Chemistry. 



Wood Uses. Wood technology furnishes the basis of a know- 

 ledge of the adaptation of different species to different uses and 

 the reasons why a given species is better adapted to a particular 

 use than to another. During the course, or treated separately, 

 there should be instruction touching the uses of the more im- 

 portant tree species. Necessarily this is closely related to the dis- 

 cussion of the minor industries. 



There has been some discussion whether the minor forest in- 

 dustries should be treated under Products or Lumbering. Thus, 

 for example, should the manufacture of ground wood pulp be 

 given under Forest Products or under Lumbering? This is 

 entirely a matter for consideration of individual instructors. In 

 general, however, the discussion of the industries themselves and 

 their relation to the forest may properly be handled under Lum- 

 bering, while technical processes in manufacture of by-products 

 may be considered under Products. 



Wood Preservation. This subject should be considered also 

 under Forest Products or Applied Chemistry. There should be 

 co,mprised under this head the mechanical importance of wood 

 presers^ation ; relation of wood preservation to forest manage- 

 ment : chemicals used in preserving wood; seasoning timber for 

 preservative treatment ; methods used in applying preservatives ; 

 wood preservation plants ; preservative treatment of cross-ties, 

 posts, poles, mine timbers, and piling ; preservation of lumber and 

 the effect on strength ; treatment of paving blocks ; and fire- 

 proofing wood. 



