28 



BULLETIN 506^ U. S. DEPAETMENT OF AGEICULTUEE. 



aiic the Xortheast, and to some extent in the Lake States. A great 

 deal of the ash lumber cut in the Lake States comes from the black 

 ash {Fraxinus nigra), while the same species is cut to considerable 

 extent in the Northeast. Green ash {Fraxhvus lanceolata) is the 

 principal source of ash lumber in the Southern States. The lumber 

 trade divides ash lumber into white ash and brown ash; white-ash 

 lumber is cut from the white ash and green-ash tree, while brown-ash 

 lumber comes from the black-ash tree. In the Pacific Coast States, 

 Oregon ash (Fraxinus oregona) is sometimes cut, while red ash 

 {Fraxinus pennsylvanica) is used to a limited extent in the East. 



Table 23. — Reported production of ash himber, 1915. 

 [Computed total production in United States, 190,000 M feet b. m.] 



State. 



Trincipal species cut. 



Number 

 of active 

 mills 

 report- 

 ing. 



Quantity 



reported, 



Mfeet 



b. m. 



Per 



cent. 



Average 



value per 



Mfeet 



f. o. b. 



mill. 



United States . 



Arkansas 



Tennessee 



Louisiana 



Wisconsin 



Indiana 



Ohio 



Michigan 



Mississippi 



New York 



Kentucky 



All other States (see Summary, 

 p. 40). 



Green 



do.. 



do 



White and black . 



White 



do 



White and black. 



Green 



White and black . 

 White 



3,486 



159,910 



100.0 



87 

 193 



49 

 213 

 238 

 273 

 174 



79 



702 



156 



1,322 



18,957 

 15, 233 

 14, 602 

 13,733 

 11,006 

 8, 616 

 7,839 

 7,381 

 7,163 

 0, 966 

 48,414 



n.8 



9.5 

 9.1 

 8.6 

 6.9 

 5.4 

 4.9 

 4.6 

 4.5 

 4.4 

 30.3 



$22. 15 



23.35 

 23.37 

 22.47 

 19.96 

 23.75 

 24.59 

 21.36 

 22.51 

 23.90 

 23.69 



COTTONWOOD. 



Cottonwood lumber .is cut from a number of related species. 



Common cottonwoocl {Pofulus deltoides) furnishes the bulk of the 

 lumber. It is found in the whole country east of the Rocky Moun- 

 tains, b,ut is lumbered principally in the lower Mississippi Valley. 



Swamp cottonwoocl {Populus hetevofTiyUa) is cut with common 

 Cottonwood in the lower Mississippi Valley States. 



Aspen (or popple) {Pojmlus tremuloides) , often called poplar, is 

 cut mostly in the Lake States and the Northeast, but also occasionally 

 in the Rocky Mountains and westward. 



Large-toothed aspen {Populus grandidentata) , an eastern species, 

 is not usually distinguished from the other. 



Balm of Gilead {Populus halsamifera) , commonly known as balm, 

 is cut in the Lake States and eastward. 



Black Cottonwood {Populus trkhocarpa) is lumbere'd on the Pacific 

 coast. It is the largest of the cottonwoods. 



