BUREAU OF PLANT INDUSTRY. 



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



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



Laboratory of Plant Pathology, Erwin I". Smith. Pathologist in Charge. 



Fruit Disease Investigations, Merton B. Walte, Pathologist in Charge. 



Investigations in Forest Pathology, Baven Metcalf, Pathologist In Charge. 



cotton and Truck Diseases and Plant Disease Survey, William A. Orton, Pathologist in 

 Charge. 



Pathological Collections ami Inspection Work, Flora W. Patterson. Mycologist in Charge. 



Plant I.if< History Investigations, Walter t. Swingle, Physiologist in Charge. 



Breeding Investigations, Archibald l>. Shamel and Daniel x. Shoemaker. Physiolo- 

 gists in Charge. 



Tobacco Investigations. Archibald i». Shamel, Wlghtman w. earner, and Ernest u. 

 Mathewson, in Charge. 



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



Alkali ami Drought Resistant Plant Breeding Investigations, Thomas 11. Kearney. Physi- 

 ologist in Charge. 



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



* In Charge. 



Bionomic Investigations of Tropical and Subtropical riant*, orator P. Cook, Bionomist 

 in Charge. 



Drug ami Poisonous Plant and Tea culture Investigations, Rodney II. True, Physiologist 

 in Charge. 



Physical Laboratory, Lyman J. Brlggs, Physlclsl In Charge. 



Agricultural Technology, Nathan A. Cobb, Crop Technologist In Charge. 



Taxonomio "ml Range Investigations, Frederick v. CovMle, Botanist in Charge. 



Farm Management, William .1. Splllman, Agriculturist In Charge. 



drain Investigations, Mark Alfred Carleton, Cereallsl in Charge. 



Arlington Experimental Farm and Horticultural Investigations, I C. Corbett, Ilortlcul- 



ttirist in CI 

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

 Sugar-Beet Investigations, Charles <>. Townsend, Pathologist in Charge.- 

 Western Agricultural Extension, Carl S. Scofleld, Agriculturist In charge. 

 Dry-Land Agriculture Investigations, E Channing Chllcott, Agriculturist in Charge. 

 Pomological Collections, Gustavus B. Brackett, Pomologlsl In Charge. 

 Field Investigations In Pomology, William A. Taylor and <;. Harold Powell, I'omologists 



in CI 

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

 Foreign Seed ami riant Introduction, David Falrchild, Agricultural Explorer In Charge. 

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

 Seed Laboratory, Edgar Brown, Botanist In l ' ; 



Grain Standardization, John D. Shanahan, Crop Technologist In Charge. 

 Subtropical Garden, Miami. //</.. P. J. Wester, in Charge. 



I'lant Introduction Garden, Chico, Cal., W. W. Tracy, Jr., Assistant Botanist in Charge. 

 South Texas Garden, Brownsville, Tex., Edward C. Green, Pomologlst in Charge. 

 Farmers' Cooperativt Demonstration Work, Seaman A. Knapp, Special Agent in Charge. 

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



Charge. 



Editor, .T. E. Rockwell. 

 Chief Clerk. James E. .Tones. 



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 in Charge of Matting-Rush Investigations. 

 Frederic Chisolm, Expert. 



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

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