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BUREAU OF PLANT INDUSTRY. 



Beveria' T. Galloway, (J]iuf. 

 J. E. Rockwell, Editor. 



BOTANICAL INVESTIGATIONS AND EXPERIMENTS. 



SCIENTIFIC .STAFF. 



FREnERiCK V. CoviLLE, Bolanist. 



O. F. Cook, Botanist in Charge of Investigations in Tropical Agriculture. 



RonxEY H. Trce, Physiologist, Drug and Medicinal Plant Investigations. 



Lyster II. Dewey, Botanist in Otarge of Investigations of Filter Plants. 



Edgar Brown, Botanist in Charge of Seed Laboratory. 



Carl S. Scofield, Botanist in Charge of Grain Grade Investigations. 



G. N. Collins, Assistant Botanist, Tropical Agrindtvre. 



A. C. Crawford, Pharmacologist, Poisonous Plant Investigations. 



William E. Safford, Assistant Curator, Tropical Agriculture. 



F. H. HiLLMAN, Asshtant Botanist, Seed Herbarium. 



J. W. T. Duvel, Assistant, Seed Laboratory. 



W. W. Tracy, Jr., Assistant, Variety Trials. 



W. F. Wight, Assistant, Geographic Botany. 



W. O. RiCHTMANN, Pharmacognosiical Expert. 



Alice Henkel, Assistant, Drug and Medicirud Plant Ltvestigatinn.f. 



AV. W. Stockberger, Expert, Drug and Medicinal Plant Investigations. 



