OFFICE OF WOOD PRESERVATION. 



\V. F. SHERFESKE. Chief. 



Compilation of data on wood preservation, M. C. JENSEN, Washington, D. C. 

 National Forest Timbers, WALTER R. WH EATON. 



IJEtO T EJOTS. 



Colorado 



Construction of a wood-preserving plant for National Forest timbers C. P. 

 WINSLOW, Glenwood Springs. 



South Dakota- 



Construction of a wood-preserving plant for National Forest timbers GEORGE 

 R. OGIER, Dead wood. 



Farm Timbers, C. STOWELL SMITH. 



Maryland 



Preservative treatment of fence posts and other farm timbers, in cooperation with 

 the State Agricultural Experiment Station C. P. WILLIS, Washington, D. C. 



/ 

 New York 



Preservative treatment of greenhouse timbers, in cooperation with S. Jacobs 

 & Sons H. B. OAKLEAF, Washington, D. C. 



General Studies 



Study of the construction and maintenance of fences. RUDOLPH DIEFFENBACH, 

 Washington, D. C. 



Preparation of plans for cooperation in the treatment of farm timbers. G. T. 

 BACKUS, Washington, D. C. 



Railroad and Mine Timbers, JOHN M. NELSON, Jr. 



California 



Experiments in seasoning and treating telephone poles, in cooperation with elec- 

 tric companies in southern California. O. T. SWAN, Hotel Westmoore, Los Angeles; 

 assistant, W. H. KEMPFER, 212 South Grand avenue, Los Angeles. 



Idaho- 



Experimental treatment of mine timbers, in cooperation with the Bunker Hill 

 and Sullivan Mining and Concentrating Company. H. A. PAUL, care S. A. Easton, 

 Kellogg. 



Experimental treatment of mine timbers, in cooperation with the Hercules 

 Mining Company. PAUL M. PAINE, Burke. 



Louisiana 



Construction and operation of a plant for the treatment of telephone poles, in 

 cooperation with the North Louisiana Telephone Company. CHARLES T. BARNUM, 

 Winnfield. 



Pennsy 1 vani a 



Construction and experimental operation of a commercial open-tank wood-preserv- 

 ing plant, in cooperation with the Philadelphia and Reading Coal and Iron Com- 

 pany. JOHN M. NELSON, Jr., Washington, D. C. Assistant detailed by the company, 

 L. W. CONRAD, Pottsville, Pa. 



Research, HOWARD F. WEISS. 



