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American root drugs

BUREAU OF PLANT INDUSTRY.

Reading edition

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.

Laboratory 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. Shamel, Physiologist in Charge.

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

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

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

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, Pomologist in Charge.

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

Editor, J. E. Rockwell.

Chief Clerk, James E. Jones.

Drug-Plant Investigations.

SCIENTIFIC STAFF.

Rodney H. 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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