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 Breeding Investigations, Herbert J. Webber, Physiologist in Charge. 



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

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

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

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

 Arlington Exp: rimt ntal Farm, Lee C. Corbett, Horticulturist in Charge. 

 Sugar-Beet Investigations, Charles O. Townsend, Pathologist in Charge. 

 Western Agriadtural Extension, Carl S. Scofield, Agriculturist in Charge. 

 Dry Land Agriculture, 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 Gardi ns and Grounds, Edward M. Byrnes, 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 Valley Laboratory, St. Louis, Mo., Hermann von Schrenk, Expert in Charge. 

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

 Plant Introduction Gardens, Chico, Cal., Palemon H. Dorsett, Pathologist in Charge. 

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



Editor, J. E. Rockwell. 

 Chief Clerk, James E. Jones. 



SEED AND PLANT INTRODUCTION AND DISTRIBUTION'. 



SCIENTIFIC STAFF. 



David Fairchild, Agriadtural Explorer in Charge of Seed and Plant Introduction. 



W. W. Tracy, sr., Superintendent of Testing Gardens. 



John E. W. Tracy, Assistant Superintendent of Testing Gardens. 



O. W. Barrett, Assistant. 



George W. Oliver, Expert. 



C. V. Piper, Agrostologist, in Charge of Forage Crop Investigations. 



J. M. Westgate, Assistant Agrostologist, in Charge of Alfalfa and Clover Introduction. 



W. W. Tracy, jr., Assistant Botanist. 



Frank N. Meyer, Agriadtural Explorer. 



Charles F. Wheeler, Expert. 



A. B. Connor, Special Agent. 



Nickolas Schmitz, Special Agent. 



John H. Tull, Special Agent, in Charge of Matting-Rush Investigations. 



Harold T. Nielsen, Scientific Assistant in Agronomy. 



Walter Fischer, Scientific Assistant. 



