BUREAU OF PLANT INDUSTRY. 



SCIENTIFIC STAFF. 



Patb&topte'f and Physiologist, and Chief of Bureau, Beverly T. Galloway. 

 Pathologist mid J'Jii/siologist, and Assistant Chief of Bureau, Albert F. Woods. 



PATHOLOGICAL INVESTIGATIONS. 



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

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



PHYSIOLOGICAL INVESTIGATIONS. 



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



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



Soil Bacteriology and Water Purification, 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. 



Economic Collections, Frederick V. Coville, Botanist in Charge. 



AGRONOMIC INVESTIGATIONS. 



Farm Management, 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. Townsend, Pathologist in Charge. 

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

 Dry Land Agriculture, E. Channing Chilcott, Expert in Charge. 



HORTICULTURAL INVESTIGATIONS. 



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. 



SEED AND PLANT INTRODUCTION INVESTIGATIONS. 



Seed and Plant Introduction and Distribution, Adrian J. Pieters and David Fairchild, 



in Charge. 



y, Edgi 



SPECIAL LABORATORIES, GARDENS, AND FARMS. 



Seed Laboratory, Edgar Brown, Botanist in 



AGBiC. DEFY* 



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. 



A. J. Pieters, Botanist in Charge. 



David Fairchild, Agricultural Explorer, in Charge of Foreign Explorations. 



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



John E. W. Tracy, Assistant Superintendent of Testing Gardens, in Charge of Congres- 

 sional Seed Distribution. 



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, Agricultural 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. 

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