LOGGING AND LUMBERING 585 



John, H. F. (11607) 



the use of wood in glideb construction. Wood-Worker 49 (6) : 38-40, 

 illus. 1930. 



Johnson, B. A. (11608) 



adventures in spruce and other woods. Lumber World Rev. 35 (4) : 19-24 ; 



(5) : 23-31; (6) : 19-20; (7) : 23-24; (8) : 27-28; (9) : 23-25, illus. 1918. 



Kirkbridge, C. E., Jr. (11608a) 



lumber's contribution to aeronautical progress. South. Lumberman 1770 : 

 215-218, illus. 1929. 



Koehler, Arthur. (11609) 



selecting wood for airplanes : A DISCUSSION OF CONSIDERATIONS necessary 

 in selecting materials and the effects of some hidden defects. Sci. 

 Amer. Sup. 2279 : 148-149. 1919. 



and Pillow, M. Y. (11610) 



effect of high temperatures on the mode of fracture of a softwood. 

 South. Lumberman 1576: 219-221, illus. 1925. 



Markwardt, L. J. (11611) 



aircraft woods : their properties, selection, and characteristics. Natl. 

 Advisory Com. for Aeronautics Rept. 354, 34 pp., illus. 1930. 



(11612) 



NEW TOUGHNESS MACHINE IS AID IN WOOD SELECTION. Wood Working IlldUS. 



2 (1) : 31-34. 1926. 

 Martin, G. L. (11613) 



WOOD AND PLYWOOD IN THE COMMERCIAL AIRPLANE. HardWOOd ReC. 50 (6) I 31, 



38, illus. 1921. 



Meloney, H. H. (11614) 



spruce. Empire [State] Forester 5: 52-54, illus. 1919. 



Moore, W. M. (11615) 



SOME RECENT DEVELOPMENTS IN THE USE OF WOOD IN AIRPLANE CONSTRUCTION. 



Jour. Forestry 22 : 353-371. 1924. 

 Nelson, J. H. (11616) 



THE STRENGTH OF ONE-PIECE, SOLID, BUILT-UP, AND LAMINATED WOOD AIRPLANE 



wing beams. Natl. Advisory Com. for Aeronautics Rept. 35, 12 pp., illus. 

 1919. 



Newlin, J. A., and Trayer, G. W. (11617) 



the design of airplane wing ribs. Natl. Advisory Com. for Aeronautics 

 Rept. 345, 54 pp., illus. 1930. 



and Trayer, G. W. (11618) 



the influence of the form of a wooden beam on its stiffness and 

 strength: 1. deflection of beams with special reference to shear de- 

 formations; 2. form factors of beams subjected to transverse loading 

 only; 3. stresses in wood members subjected to combined column and 

 beam action. Natl. Advisory Com. for Aeronautics Repts. 180, 181, 188. 

 1923-24. 



Niles, A. S., and Newell, J. S. (11619) 



airplane structures. 413 pp., illus. New York. 1929. 



Nixon, Carl. (11620) 



a new type airplane of plywood construction. Veneers 23 (11) : 18-19, 

 illus. 1929. 



Norton, F. H. (H621) 



the aerodynamic properties of thick aerofoils suitable for internal brac- 

 ing. Natl. Advisory Com. for Aeronautics Rept. 75, 22 pp., illus. 1920. 



Pomilio, Ottorino. (11622) 



aeroplane construction in general. Aerial Age 6 (17) : 748-751, illus. 

 1918. 



Prior, Lee. (11623) 



spruce for airplanes and pianos. Veneers 12 (10) : 17-18. 1918. 



