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U. S. DEPARTMENT OF AGRICULTURE.
BUREAU OF PLANT INDUSTRY—BULLETIN NO. 129.
B. T. GALLOWAY, Chief of Bureau.
BARIUM, A CAUSE OF THE
LOCO-WEED DISEASE.

BY

ALBERT C. CRAWFORD,
Pharmacologist, Poisonous-Plant Investigations.

Issued August 22, 1908.
WASHINGTON:
GOVERNMENT PRINTING OFFICE.
1908.
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BUREAU OF PLANT INDUSTRY.
  • Physiologist and Pathologist, and Chief of Bureau, Beverly T. Galloway.
  • Physiologist and Pathologist, 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.
  • Cotton and Truck Diseases and Plant Disease Survey, William A. Orton, Pathologist inCharge.
  • Plant Life History Investigations, Walter T. Swingle, Physiologist in Charge.
  • Cotton Breeding Investigations, Archibald D. Shamel and Daniel N. Shoemaker, Physiologistsin Charge.
  • Tobacco Investigations, Archibald D. Shamel, Wightman W. Garner, and Ernest H.Mathewson, 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, Physiologistin Charge.
  • Bionomic Investigations of Tropical and Subtropical Plants, Orator F. Cook, Bionomistin 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 and Fiber Plant Investigations, Nathan A. Cobb, Crop Technologist inCharge.
  • Taxonomic and Range Investigations, Frederick V. Coville, Botanist in Charge.
  • Farm Management Investigations, William J. Spillman, Agriculturist in Charge.
  • Grain Investigations, Mark Alfred Carleton, Cerealist in Charge.
  • Arlington Experimental Farm, Lee C. Corbett, Horticulturist in Charge.
  • Vegetable Testing Gardens, William W. Tracy, sr., Superintendent.
  • 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, Pomologistsin Charge.
  • Experimental Gardens and Grounds, Edward N. Byrnes, Superintendent.
  • Foreign 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, Crop Technologist in Charge.
  • Subtropical Laboratory and Garden, Miami, Fla., Ernst A. Be                        
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