CHAPTER 111. 

 THE PKINCIPAL SPECIES OF AMEKICAN WOODS. 



NOTES. 



The photographs of tangential and radial sections are life size. 

 The microphotographs are of cross-sections and are enlarged 37^> 

 diameters. 



Following the precedent of U. S. F'orest Bulletin No. 17, Sud- 

 worth's Check List of the Forest Trees of the United States, the com- 

 plicated rules for the capitalization of the names of species are aban- 

 doned and they are uniformly not capitalized. 



On pages 192-195 will be found lists of the woods described, ar- 

 ranged in the order of their comparative weight, strength, elasticity, 

 and hardness. These lists are based upon the figures in Sargent's 

 The Jesup Collection. 



In the appendix, p. 289, will be found a key for distinguishing the 

 various kinds of w r ood. 



Information as to current wholesale prices in the principal mar- 

 kets of the country can be had from the U. S. Dept. of Agriculture, 

 The Forest Service, Washington, D. C., Record of Wholesale Prices 

 of Lumber, List A. These lists are published periodically. No at- 

 tempt is made in this book to give prices because: (1) only lists of 

 wholesale prices are available; (2) the cuts and grades differ consid- 

 erably, especially in soft woods (conifers) ; (3) prices are constantly 

 varying; (4) the prices differ much in different localities. 



57 



