BUREAU OF PLANT INDUSTRY. 



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



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



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



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



Laboratory of Forest Pathology, Baven Metcalf, Pathologist in Charge. 



Cotton and Truck Diseases and Plant Discus, Survey, William A. Orton, Pathologist in 



Charge. 

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

 Cotton Breeding Investigations, Archibald 1». Shame! and Daniel X. Shoemaker, Physiolo- 



gists in Charge. 

 Tobacco Investigations, Archibald D. Shamel, Wightman W. Garner, ami Ernesl II. 



Mathewson, in Charge, 

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



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

 ologist in Charge. 

 Soil Bacteriology ana" Water Purification Investigations, Karl l\ Kellerman, Physiologist 



in Charge. 

 Bionomic Investigations of Tropical and Subtropical limits, orator V. Cook, Bionomist 



in Charge. 

 Drug and Poisonous Plant Investigations and 'lea culture Investigations, Rodney II. 



True, Physiologist in Charge. 

 Physical Laboratory, Lyman .1. Brlggs, Physicist in Charge. 

 Crop Technology and Fiber Plant Investigations, Nathan \. Cobb, Crop Technologist in 



Chai 

 Taxonomic and Range Investigations, Frederick V. Covllle, Botanist in Charge. 

 Farm Management Investigations, William .1. Spill man, Agriculturist in Charge. 

 drain Investigations, Mark Alfred Carleton, Cerealisl in Charge. 

 Arlington Experimental Farm, Lee «'. Corbett, Horticulturist in Charge. 

 Vegetable Testing Gardens, William w. Tracy, sr., Superintendent. 

 Sugar-Beet Investigations, Charles <». Townsend, Pathologisl in Charge. 

 Western Agricultural Extension Investigations, Carl S. Scofleld, Agriculturist in Charge. 

 Dry-Land Vgricultun Investigations, v.. Channlng Chllcott, Agriculturist in Charge. 

 Pomological Collections, Gustavus B. Brackett, Pomologlst in charge 

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



in Ch 

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



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

 Foragt Crop Investigations, Charles v. Piper, Agrostologist in Charge. 

 hi i d Laboratory, Edgar Brown, Botanist in Charge. 



drain Standardization, John 1 ». Shanahan, Crop Technologist In Charge. 

 Subtropical Laboratory and Garden, Miami, Fla., R. J. Wester, Gardener in Charge. 

 Plant Introduction dunlin, Chico, Cal., W. W. Tracy, jr.. Assistant Botanist in Charge. 

 South Texas Garden, Brownsville, Tex., Edward C. Green, Pomologist in charge. 

 Farmers' Cooperative Demonstration Work, Seaman A. Knapp, special Agent in Charge. 

 Seed Distribution (Directed by Chief of Bureau), Lisle Morrison, Assistant in General 



Charge. 



Editor, J. E. Rockwell. 



Chief Clerk, James E. Jones. 



Foreign Seed and Plant Introduction. 



scientific staff. 



David Fairchild, Agricultural Explorer in Charge. 



Frank N. Meyer and William D. Hills, Agricultural Explorers. 

 Albert Mann, Expert in Charge of Special Barley Investigations. 

 F. W. Clarke, Special Agent i>i Charge of Matting-Rush Investigations. 

 Frederic Chisolm, Expert. 



Walter Fischer, R. A. Young, and H. C. Skeels, Scientific Assistants. 

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