110 ECONOMIC "WOODS OF THE UNITED STATES 



^Southern Pines: 



Fernow, B. E.: Southern Pine: Mechanical and Physical Properties. Cir. 

 12, U. S. Div. Forestry, 1896. 



Mohb, Chahi.es, and Roth, Filibert: The Timber Pines of the Southern 

 United States, together with a Discussion of the Structure of their Wood. 

 Bui. 13 (rev. ed.), U. S. Div. Forestry, 1897. 



Betts, H. S.: Properties and Uses of the Southern Pines. Cir. 164, U. S. 

 Forest Service, 1909. 



Record, Samuel J.: Southern Yellow Pine for Structural Purposes. 

 American Architect, Apr. 11, 1917, pp. 223-228. 



10 Pinus caribma: 



Mattoon, Wilbur R.: Some Characteristics of Slash Pine. For. Quar- 

 terly, 14: 4: 578-588, Dec. 1916. 



Mattoon, Wilbur R.: The Slash Pine. Amer. For., 23:279:158-160. 

 Mch. 1917. 



^Pinus palustris: 



Koehler, Arthur: A Visual Method of Distinguishing Longleaf Pine. 

 Amer, Lumberman, Sept. 11, 1915, pp. 34-35. 



Fernow, B. E.: Timber Physics. Part II.: Results of Investigations on 

 Longleaf Pine. Bui. 8, U. S. Div. Forestry, 1893. 



Bitting, Katherine G. : The Histological Difference between Pinus twda 

 and Pinus palustris. Proc. Ind. Acad. Sci., Indianapolis, Ind., 1908, pp. 127- 

 129. 



Buttrick, P. L. : Commercial Uses of Longleaf Pine. Amer. For., 

 21 : 261 : 896-908, Sept. 1915. 



12 Pinus taeda: 



Ashe, W. W. : Loblolly or North Carolina Pine. Bui. 24, N. C. Geol. and 

 Econ. Survey, 1915. 



Sterrett, W. D.: Forest Management of Loblolly Pine in Delaware, 

 Maryland, and Virginia. Bui. 11, U. S. Forest Service, 1914. 



Zon, Raphael: Loblolly Pine in Eastern Texas. Bui. 64, U. S. Forest 

 Service, 1905. 



Hatt, W. Kendrick: Second Progress Report on the Strength of Structural 

 Timber. Cir. 115, U. S. Forest Service, 1907. 



"Pinus echinata: 



Mattoon, Wilbur R. : Shortleaf Pine: Its Economic Importance and 

 Forest Management. Bui. 308, U. S. Forest Service, 1915. 



Mattoon, Wilbur R.: Life History of Shortleaf Pine. Bui. 244, U. S. 

 Forest Service, 1915. 



Detwiler, Samuel B.: Shortleaf Pine. Amer. For., 22:273:513-520. 

 Sept. 1916. 



u Pseudotsuga: 



Cline, McGarvet, and Knapp, J. B.: Properties and Uses of Douglas Fir. 

 Bui. 88, U. S. Forest Service, 1911. 



Detwiler, Samuel B.: Douglas Fir. Amer. For., 22: 266: 67-75, Feb. 

 1916. 



Frothingham, E. H. : Douglas Fir: A Study of the Pacific Coast and Rocky 

 Mountain Forms. Cir. 150, U. S. Forest Service, 1909. 



