Bl REAl OF PLANT INDUSTRY. 



PathoJoyist and Physiologist, and Chief of Bureau, Beverly T. Oalloway. 

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

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

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

 Laboriitory of Forest Pathology. Haven Metcalf, Pathologist in Charge. 

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

 Cotton and Tobacco Breeding Investigations, Archibald D. Shaniel. I'hysiologist in Charge. 

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



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

 ologist in Cliarge. 

 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. 

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

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

 Farm Management Investigations, William ,T. 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 Investigations, Carl S. Scofield, Agriculturist in Charge. 

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

 Pomological Collections, Gustavus B. Brackett, I'omologist 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, William 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. 



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

 Plant Introduction Garden. Chico, Cal., August Mayer, Expert in Charge. 

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

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



Editor, .T. E. Rockwell. 

 Chief Clerk. .Tames E. Jones. 



Dhug-Plant Investigations, 

 scientific staff. 

 Rodney 11. True. Physiologist in Charge. 

 W. W. Stockberger. Frank Rabak, Experts. 

 Alice Henkel, Assistant. 

 G. Fred Klugh, T. B. Young, S. C. Hood, Scientific Assistants. 



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