BUREAU OF PLANT INDUSTRY. 



Pathologist and Physiologist, and Chief of Bureau, Beverly T. Galloway. 



Pathologist and Physiologist, and Assistant Chief of Bureau, Albert F. Woods. 



Laboratory of Plant Pathology, Erwin F. Smith. Pathologist in Charge. 



Investigations of Diseases of Fruits, Merton B. Waite. Pathologist in Charge. 



Plant Life History Investigations, Walter T. Swingle, Physiologist in Charge. 



Cotton and Tohaceo Breeding Investigations, Avch'ihalA D. Shamel, Physiologist in Charge. 



Corn Breeding Investigations, Charles P. Hartley, Physiologist in Charge. 



Alkali and Drought-Resistant Plant Breeding Investigations, Thomas H. Kearney, Physi- 

 ologist in Charge. 



Soil Bacteriology and Water Purification Investigations, Karl F. Kellerman, Physiologist 

 in Charge. 



Bionomic Investigations of Tropical and Subtropical Plants, Orator F. Cook, Bionomist 

 In Charge. 



Drug and Poisonous Plant Investigations and Tea Culture Investigations, Rodney H. 

 True, Physiologist in Charge. 



Physical Laboratory, Lyman .T. Briggs, Physicist in Charge. 



Crop Technology Investigations, Nathan A. Cobb. Expert in Charge. 



Taxonomic Investigations, Frederick Y. Coville, Botanist in Charge. 



Farm Management Investigations, William J. Spillman, Agriculturist in Charge. 



Grain Investigations, Mark A. Carleton. Cerealist in. Charge. 



Arlington Experimental Farm, Lee C. Corbett. Horticulturist in Charge. 



Sugar-Beet Investigations, Charles O. Tov.nsend. Pathologist in Charge. 



Westevn Agricultural Extension Investigations, Carl S. Scofield. Agriculturist in Charge. 



Dry Land Agriculture Investigations, E. Channing Chilcott, Agriculturist in Charge. 



Pomological Collections, Gustavus B. Brackett, Pomologist in Charge. 



Field Investigations in Pomology, William A. Taylor and G. Harold Powell, Pomologists 

 in Charge. 



Experimental Gardens and Grounds, Edward M. Byrnes. Superintendent. 



Vegetable Testing Gardens, Will W. Tracy, sr.. Superintendent. 



Seed and Plant Introduction, David Fairchild, Agricultural Explorer in Charge. 



Forage Crop Investigations, Charles V. Piper, Agrostologist in Charge. 



Seed Laboratory, Edgar Brown, Botanist in Charge. 



Grain Standardization, John D. Shanahan, Expert in Charge. 



Mississippi Talley Laboratory, St. Louis, Mo., Hermann von Schrenk, Expert in Charge. 



Subtropical Laboratory and Garden, Miami, Fla., Ernst A. Bessey, Pathologist in Charge. 



Plant Introduction Garden, Chico, Cah, Palemon H. Dorsett, Pathologist in Charge. 



South Texas Garden, Broirnsville, Tex., Edward C. Green, Pomologist in Charge. 



Cotton Culture Farms, Seaman A. Knapp, Lake Charles, La., Special Agent in Charge. 



Editor, .J. E. Rockwell. 

 Chief Clerk, James E. Jones. 



Tobacco Breeding Investigations. 



scientific staff. 

 A. D. Shamel, Physiologist in Charge. 



W. W. Cobey, Special Field Agent. 

 J. B. Stewart, Special Field Agent. 

 W. H. Scherffius, Special Field Agent. 

 W. W. Garner, Scientific Assistant. 

 V. C. Brewer, Assistant Tobacco Expert. 

 D. E. Brown, Special Field Agent. 



2 



105 



