IDENTIFICATION 



OF THE 



Economic Woods of the 

 United States 



Including a discussion of the Structural and 

 ^Physical Properties of Wood 



BY 



SAMUEL J. RECORD, M.A., M.F. 



Assistant Professor of Forest Products 

 Yale Vni'versity 



8vo, vii+117 pages, illustrated with figures in the text and 7 full- 

 page half-tone plates Cloth $1.25 net 



CONTENTS— Introduction. Part I: Structural and Physical Properties of 

 Wood. General. Pith. Bark. Primary Wood. Cambium. Secondary 

 Wood. Vessels. Tracheids. Wood Fibres. Wood Parenchyma. Rays. 

 Resin Ducts. Pits. Tyloses. Pith Flecks or Medullary Spots. BarsofSanio. 

 Tier-like Arrangement of Elements. Growth Rings. Heartwood and Sapwood. 

 Grain and Texture. Knots. Density and Weight. Water Content of Wood. 

 Shrinkage, Warping and Checking. Hygroscopicity. Penetrability. Con- 

 ductivity. Resonance. Color. Gloss or Lustre. Scent or Odor. Taste. 

 List of General Classifications of Wood. Publications Dealing with the Char- 

 acteristics of Wood. Publications Dealing with the Uses of American Woods. 

 Part IL Key to the Economic Woods of the United States. References. Index. 



DESCRIPTIVE CIRCULAR UPON APPLICATION 



JOHN WILEY & SONS 



43 and 45 East 19th Street NEW YORK CITY 



London: CHAPMAN & HALL, Ltd. Montreal, Can. : RENOUF PUBLISHING CO. 



