FOREST BOTANY 171 



United States Forest Service. (3365) 



WHITE SPRUCE, PlCEA CANADENSIS (MILL.) B. S. P. U. S. Dept Agr., Forest 



Serv. Silvical Leaflet 15, 4 pp. 1908. 



— (3366) 

 white willow (salix alba). U. S. Dept. Agr., Forest Serv. Circ. 87, 4 pp. 



1907. 



— (3367) 

 whitebark pine, pinus albicaulis engelm. U. S. Dept. Agr., Forest Serv. 



Silvical Leaflet 37, 3 pp. 1908. 



— (3368) 

 yellow cedar, ohamaecyparis nootkateinsis (lamb) spaoh. U. S. Dept. 



Agr., Forest Serv. Silvical Leaflet 12, 2 pp. 1907. 



(3360) 



yellow poplar (liriodendron tulipifera) . U. S. Dept. Agr., Forest Serv. 



Circ. 93, 4 pp. 1907. 



University of Toronto Foresters' Club. (3370) 



SILVICAL CHARACTERISTICS OF CANADIAN TREES. 63 pp. Toronto. 1914. 



Wahlenbeki, W. G. (3371) 



EFFECT OF CEANOTHUS BRUSH ON WESTERN YELLOW PINE PLANTATIONS IN THE 



northern rocky mountains. Jour. Agr. Research 41 : 601-612, illus. 1930. 

 Young, L. J. (3372) 



A STUDY IN THE DIFFERENCE IN SOIL REQUIREMENTS OF PINE AND SPRUCE. Mich. 



Acad. Sci. Ann. Kept. 21 : 219-221. 1918-19. 



Conifers 

 Akerman, Alfred. (3373) 



the loblolly pine. Ga. Forest Serv. Leaflet 1, 4 pp. 1926. 



(3374) 



the white cedar of the dismal swamp. Va. State Forester, Forestry Pub. 

 30, 21 pp., illus. 1923. 



Allen, E. T. (3375) 



western hemlock. U. S. Dept. Agr., Bur. Forestry Bull. 33, 55 pp., illus. 

 1902. 



Anderson, L. V. (3376) 



the predicament of larch. West Coast Lumberman 54 (638) : 54-60, 140, 

 illus. 1928. 



Ashe, W. W. (3377) 



loblolly or north oarolina pine. N. C. Geol. and Econ. Survey Bull. 24, 

 176 pp., illus. 1915. 



(3378) 



THE LONG LEAF PINE, AND ITS STRUGGLE FOR EXISTENCE. Jour. Elisha Mitchell 



Sci. Soc 11 (1) : 1-16. 1894. 



(3379) 



notes on trees. Soc. Amer. Foresters Proc. 11 : 88-90. 1916. 



Bates, C. G. (3380) 



what shall we do with engelman spruce? Colorado Forester 1926: 

 21-25. 1926. 



Beal, W. J. (3381) 



THE FUTURE OF THE WHITE PINE AND NORWAY PINE IN MICHIGAN. Mich. Acad. 



Sci. Ann. Kept. 4 : 106-107. 1904. 



Bentley, John, Jr. (3382) 



pitch pine in pike county, Pennsylvania. Forestry Quart. 3: 1-17, illus. 

 1905. 



Brown, H. P. (3383) 



GROWTH STUDIES IN FOREST TREES: 1. PINUS RIGIDA ; 2. PINUS STROBUS. Bot. 



Gaz. 54 : 386-403 ; 59 : 197-241, illus. 1912, 1915. 



