PEODUCTIO]^ OF LUMBER, LATH, AND SHINGLES. 



17 



States, but the past and present total annual production of "yel- 

 low pine," including longleaf, shortleaf, loblolly, and several species 

 of minor impoi-tance, far exceeds the yield of Douglas fir. The wood 

 of Douglas fir is quite similar to that of longleaf pine in many of its 

 properties and uses. It is sold under the name of Douglas fir, 

 Oregon pine, red fir,, yellow fir, Douglas spruce, Washington fir, Ore- 

 gon fir, and locally in California as spruce. 



Table 6. — Reported production of Douglas fir lumber, 1915. 



[Computed total production in United States, 4,431,249 M feet b. m.] 



State. 



United States 



AVasliington 



Oregon 



California 



Idaho 



Montana 



All other States (see Summary, p. 38) 



Number 

 of active 

 mills 

 report- 

 ing. 



317 

 309 



73 

 152 



55 

 140 



Quantity 



reported, 



Mfeet 



b. m. 



4, 121, 897 



2,754,179 



1,119,395 



117,951 



76, 28:3 



41, 464 



12, 625 



Per 



cent. 



100.0 



68.8 



27.2 



2.9 



1.8 



1.0 



.3 



Average 



value per 



Mfeet 



f. o. b. 



mill. 



$10. 59 



10.56 

 10.66 

 10.27 

 10.05 

 12.15 



OAK. 



The several commercial oaks furnish the largest quantity of any 

 kind of hardwood lumber. The general lumber trade calls all oak 

 limiber either white or red oak. These trade names are based on the 

 appearance of the two general kinds of lumber cut from oak trees, 

 white oak lumber being light in color and dense and red oak lumber 

 being somewhat reddish and porous. Since these two kinds of lum- 

 ber are supplied by distinct groups of botanical white and red oaks, 

 the trade distinction is logical. The bulk of oak lumber is cut from 

 less than a dozen species. The largest part of the oak lumber is 

 furnished by white oak and red oak, chestnut oak and Texan red 

 oak being of next importance. Following is a list of the principal 

 commercial oaks, divided into two groups. 



WHITE OAKS. 



"White oak {Quercug cdha) is the white oak common throughout 

 the eastern half of the United States. 



Chestnut (or rock) oak {Quercus prinus) occurs in the Appa- 

 lachian Mountain region. 



Post oak (Quercus stellata) and bur oak {Quercus macrocurpa) 

 have about the same range as white oak, but are not so abundant.' 



Overcup oak {Quercus lyrata) and cow (or basket) oak {Quercus 

 niichauxii) are the most important of the southern white oaks. 



69849°— Bull. 50G— 17 3 



