ECONOMIC WOODS OF THE UNITED STATES 115 



Fletcher, W. F. : The Native Persimmon. Farmers' Bui. 685, U. S. Dept. 

 Agr., 1915. 



"Hickory: 



Boisen, Anton T., and Newluj^T. A.: The Commercial Hickories. Bui. 

 80, U. S. Forest Service, 1910. 



Hatch, Charles F.: Manufacture and Utilization of Hickory, 1911. Cir. 

 187, U. S. Forest Service, 1911. 



Detwiler, Samuel B.: The Hickories. Amer. For., 22:272:451-457, 

 Aug. 1916. 



^Walnut: 



Sudworth, George B., and Mell, Clayton D.: Identification of North 

 American Walnut Woods. Hardwood Record, Sept. 10 and 25, 1914. 



Record, Samuel J. : The Walnuts and the Hickories. Hardwood Record, 

 Apr. 25, 1913, pp. 27-29. 



m Swietema: 



Mell, C D.:True Mahogany. Bui. No. 474, U. S. Dept. Agr., 1917. 



Record, Samuel J.: Mahogany and Some of Its Substitutes. Journ. 

 Forestry, 17: 1:1-8, Jan. 1919. 



Sudworth, George B., and Mell, Clayton D.: "Colombian Ma- 

 hogany": Its Characteristics and Its Use as a Substitute for True Mahogany. 

 Cir. 185, U. S. Forest Service, 1911. 



Busch, P.. The Commercial Mahoganies. Tropenpflanzen. 15:9:479- 

 493, 1911. 



DrxoN, Henry H. : Mahogany, and the Recognition of Some of the Differ- 

 ent Kinds by Their Microscopic Characteristics. Sci. Proc, Royal Dublin 

 Soc, 15 (n. s): 34: 431-486, Dec. 1918. 



€ Eucalyptus: 



Betts, H. S., and Smith, C. Stowell: Utilization of California Eucalypts. 

 Cir. 179, U. S. Forest Service, 1910. 



Tiemann, H. D.: Eucalyptus Lumber. Hardwood Record, Sept. 25 and 

 Oct. 10, 1913. 



Woodbury, T. D.: Yield and Returns of Blue Gum in California. Cir. 

 210, U. S. Forest Service, 1912. 



m Euergreen Oaks: 



Bailey, Irving W.: Notes on the Wood Structure of the Betulaceae and 

 Fagacea;. For. Quarterly, 8: 2: 178-185, June 1910. 



Sudworth, George B., and Mell, CD.: The Identification of Important 

 American Oak Woods. Bui. 102, U. S. Forest Service, 1912. 



®Quercus densiflora: 



Jepsox, Willis Linn, and Betts, H. S.: California Tanbark Oak. Bui. 

 75, U. S. Forest Service, 1911. 



^Carpinus: 



Bailey, Irving W. . Notes on the Wood Structure of the Betulaceae and 

 Fagaceaa. For. Quarterly, 8: 2: 178-185, June 1910. 



bl Platanus: 



Brush, Warren D.: Distinguishing Characteristics of North American 

 Sycamore Woods. Bot. Gaz., 64: 6: 480-496, Dec. 1917. 



