658 MISC. PUBLICATION 3 6 4_. U. S. DEFT. OF AGRICULTURE 



Hawley, L. F. (.13040) 



seventeen fallacies about wood. Indus, and Engin. Chem., News Ed.. 3 

 (15) : 5-6. 1925. 



Hayward, H. D. (13041) 



THE EFFECT OF MOISTURE UPON THE STRENGTH OF DOUGLAS TIE. Wash. [State] 



Univ. Forest Club Ann. 9 : 19-25. 1921. 

 Hearding. W. H. (13042) 



EEPOET UPON EXPERIMENTS . . . UPON COMPRESSIVE POWER OF PINE AND HEMLOCK 



ttmbeb. 12 pp.. illus. Washington, D. C. 1S72. 

 Heck. G. E. (13043) 



BULLT-UP SOUTHERN YELLOW PINE TIMBERS TESTED FOE STRENGTH. WOOD CON- 

 STRUCTION information service, see. E-2B. NatL Lumber Manfrs. Assoc. 

 8 pp., fflus. Washington, D. C. 1919. 



(13044) 



"compression -5 wood and FATLUEE of factory roofbeam. Ensin. News-Bee. 



S3 (11) : 508-509, illus. 1919. 



I 13045 i 



splintering properties of AIRPLANE woods. Automotive Indus. 40 (23) : 

 1234-1235, illus. 1919. Also pub. in Sci. Amer. Sup. SS : 68, illus. 1919. 



Hedin. L. 113046) 



COMMERCIAL MAHOGANIES OF FRENCH CAMEROON. Yale Univ. ScllOOl Forestry, 



Trop. Woods 21 : 1-5. 1930. 



Helm, A. L. (13047) 



mechanical properties of redwood. U. S. Dept. Agr.. Forest Serv. Circ. 

 193. 32 pp., illus. 1912. 



Knauss. A. C. and Seutter. Louis. (13048) 



internal stresses in laminated construction. U. S. NatL Advisory Com. 

 for Aeronautics. Bept. 145, 56 pp., illus. 1922. 



Hein miller, Carl and Goss. O. P. M. 1 13049) 



STRUCTURAL TIMBER HAND BOOK ON PACIFIC COAST WOODS. 2S9 pp.. illus. Seattle. 



1916. 



Hendershot, O. P. (13050) 



thermal expansion of wood. Science 60 : 456-457. 1924. 



Henderson, H. L. ( 13051) 



SEASONING DEFECTS IN WOOD : THELR CAUSES, REMEDIES AND PREVENTION. Amer. 



Lumberman 2546 : 44-45. illus. 1924. 

 Hicks, P. P. (13052) 



ELECTRICAL RESISTANCE OF TREATED AND UNTREATED CEOSSTLES. CrOSS Tie Bull. 



3 (4) : 23-24. 1922. Also pub. in South. Lumber Jour. 43 (13) : 32. 1922; 

 and Ey Maintenance Engin. IS (8) : 277-27S. 1922. 



(13053) 



THE MECHANICAL PROPERTIES OF WOODS USED FOR CROSS TIES. Cl'OSS Tie Bull. 



3 (5) : 8-10. 1922. also pub. in South. Lumber Jour. 4S (21) : 30. 1922: 

 and By. Maintenance Engin. IS (7) : 244-245. 1922. 



- (13054) 



the properties of western tie woods. Ry Maintenance Engin. 16 (12) : 473- 

 474. 1920. Also pub. in Cross Tie Bull. 2 (6) : 3-6. 1921. 



Higgins. C. H. (13055) 



the strength of old timber. Engin. News 64 (24) : 661. 1910. 



Hogue, C. J. I 13056) 



douglas fie as a structural timber. Joui*. Boston Soc. Civ. Engin. 7 : 

 14-5-156. illus. 1920. 



(13057) 



the mechanical properties of timbers. Four L Lumber News 8 (28) : 14-15 : 



9 (1) : 13, 36-37. 1926-27. 



(13058) 



STRUCTURAL TIMBERS : RELATION OF DEFECTS TO STRENGTH . . . Foul' L Bull. 



6 (28) : 14, 35, 38-39. 1924. 



