TIMBER MECHANICS. J. A. NEWLIN, in charge ; L. J. Markwardt, 

 assistant in charge ; T. R. C. Wilson, special assistant ; J. S. Mathew- 

 son, J. O. Bixby. 



Box Design. Don L. Quinn, in charge ; L. R. Morris, R. B. Quincy, 

 J. B. Frear, H. M. Hale. 



Propeller Manufacture. A. L. Heim, in charge ; A. C.. Knauss, Louis 

 Seutter. 



Airplane Tests. Prof. E. R. Maurer, in charge ; Hobart D. Frary, 

 C. B. Norris, Rufus Crane, E. P. Johnson, J. A. Hanson, R. E. Deutsche. 



Timber Tests. G. E. Heck, in charge ; H. S. Grenoble, Armin Elmen- 

 dorf, J. R. Watkins, W. S. Broome, R. E. Johnston, C. E. Dennis, H. J. 

 Rosenthal, C. A. Plaskett, R. F. Luxford, R. M. Wirka, L. A. Welo, 

 E. D. Fahlberg, R. P. A. Johnson, D. P. Gilmore, W. S. Wilder, L. L. 

 Call, Peter Skurdalsvold, G. M. Griffith. 



WOOD PRESERVATION. CLYDE H. TEESDALE, in charge ; Geo. M. Hunt, 

 P. R. Hicks, Matthew E. Dunlap, Olenus L. Sponsler, S. B. Henning, 

 Samuel Schwartz, Alfred C. Lindauer, Frederick L. Browne, Samuel 

 Butterman, Melville H. Price, Edward P. Devlin, T. R. Truax. 



INDUSTRIAL INVESTIGATIONS. H. S. BETTS, in charge ; ROLF 

 THELEN, on detail. 



STUDIES. J. T. Harris. 



USES OF WOODS. W. D. Brush. 



WOOD-WAST^ EXCHANGE. R. K. Helphenstine, jr. 



STATISTICS OF FOREST PRODUCTS. Franklin H. Smith, Albert H. 

 Piersou. Collaborator : A. B. Strough, Albany, N. Y. 



ENGINEERING. 



O. C. MERRILL, chief engineer, in charge. 

 ROADS. T. W. NORCROSS, assistant chief engineer, in charge. 

 WATER POWER. L. A. WHITSIT, assistant engineer, in charge. 

 MAPS AND SURVEYS. F. E. BONNER, assistant engineer, in charge (tem- 

 porarily on detail to the Forest Products Laboratory) ; C. A. 

 KOLB, geographer. 



ATLAS. G. B. BRUCE. 



DRAFTING. J. M. WITHEROW. 



ENGRAVING. F. C. CRASS. 



PHOTOGRAPHY. E. S. SHIPP. 



SURVEYS. F. E. BONNER. 



ACQUISITION OF LANDS UNDER THE WEEKS LAW. 



WILLIAM L. HALL, assistant forester in charge, Washington, D. C. 

 APPRAISAL OF LANDS. W. W. ASHE, forest inspector in charge, Wash- 

 ington, D. C. Lumberman's examinations : E. D. Fletcher, Gorham, 



