WOOD TECHNOLOGY 657 



Hall, W. L., and Maxwell, Hu. (13021) 



USES OF COMMERCIAL WOODS OF THE UNITED STATES : 1. CEDARS, CYPRESSES AND 



sequoias. U. S. Dept. Agr., Forest Serv. Bull. 95, 62 pp. 1911. 



Hamilton, J. A. (13022) 



orange and lemon wood. Timberman 22 (8) : 80. 1921. 



Haner, H. C. (13023) 



some important foreign woods ; the ohia. Hardwood Rec. 26 (7) : 18. 1908. 



Hanzlik, E. J. (13024) 



western white pine and sugar pine. Four L Lumber News 9 (10) : 8, 

 36-37, illus. 1927. 



Hardman, R. C. (13025) 



CORRECTION TABLES FOR STRENGTHS OF COMMERCLAX SIZE TIMBERS. Engin. NeWF 



68 (18) : 826. 1912. 



Harkom, J. F., and Rochester, G. H. (13026) 



strength tests of creosoted douglas fir beams. Canada Dept. Int., Forest 

 Serv. Circ. 28, 14 pp., illus. 1930. 



Ha swell, C. H. (13027) 



strength of materials. Jour. Franklin Inst. 70 : 337-343, 385-391 ; 71 : 37-43, 

 108-114, 183-192, 242-252, 314-321, 404-408; 72: 37-42, 124-127, 170-173. 

 1860-61. 



Hatch. W. H. (13028) 



INVESTIGATIONS AND TESTS OF AMERICAN TIMBER | REPORT FROM THE COMMITTEE ON 



agriculture. U. S. Cong. 53, 2d sess., House Rept. 1442, 4 pp. 1894. 



Hatt, W. K. (13029) 



experiments on the strength of treated timber. U. S. Dept. Agr., Forest 

 Serv. Circ. 39, 31 pp. 1906. 



(13030) 



fourth progress report on tests of treated ties. Amer. Ry. Engin. and 



Maintenance of Way Assoc. Bull. 124: 17-47, illus. 1910. Also pub. in 

 Amer. Ry Engin. and Maintenance Proc. 11 (pt. 2) : 827-833. 1910. 



(13031) 



holding force of railroad spikes in wooden ties. U. S. Dept. Agr., Forest 



Serv. Circ. 46, 7 pp., illus. 1906. 



(13032) 



instructions to engineers of timber tests. U. S. Dept. Agr., Forest Serv. 



Circ. 38, 55 pp., illus. 1906. 



■ (13033) 



A LABORATORY COURSE IN TESTING MATERIALS OF CONSTRUCTION. Amer. SOC 



Testing Materials Proc. 8(5): 234-253. 1905. 



■ (13034) 



mechanical properties of red gum wood. U. S. Dept. Agr., Bur. Forestry 

 Bull. 58 : 40-54. 1905. 



— (13035) 



A. PRELIMINARY PROGRAM FOR THE TIMBER TEST WORK TO BE UNDERTAKEN BY 

 THE BUREAU OF FORESTRY. UNITED STATES DEPARTMENT OF AGRICULTURE. Amer. 



Soc Test Materials Proc. 6(3): 308-339. 1903. 



— (13036) 



PROGRESS REPORT ON THE STRENGTH OF STRUCTURAL TIMBER. U. S. Dept. Agr., 



Bur. Forestry Circ. 32, 28 pp. 1904. 



— (13037) 



SECOND PROGRESS REPORT ON THE STRENGTH OF STRUCTURAL TIMBER. U. S. Dept. 



Agr., Forest Serv. Circ. 115, 39 pp., illus. 1907. 



— (13038) 



STRUCTURAL TIMBER. 28 pp., illuS. n. p. 1908. 



— - ScHRENK, H. von, Lanza, G., Johnson, A. L., and Russell, S. B. (13039) 

 timber tests (discussion). Proc. Amer. Soc. Civ. Engin. 29: 650-683. 1903. 



