BUREAU OF PLANT INDUSTRY. 



BEVERLY T. GALLOWAY, Chief. 

 J. E. ROCKWELL, Editor. 



BOTANICAL INVESTIGATIONS AND EXPERIMENTS. 



SCIENTIFIC STAFF. 



FREDERICK V. COVILLE, Botanist. 



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



RODNEY H. TRUE, Physiologist, Drug and Medicinal Plant Investigations. 



LYSTER H. DEWEY, Botanist in Cfiarge of Investigations of Fiber 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 Agriculture. 



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



WILLIAM E. SAFFORD, Assistant Curator, Tropical Agriculture. 



F. H. HILLMAN, Assistant 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, Pharmacognostical Expert. 



ALICE HENKEL, Assistant, Drug and Medicinal Plant Investigations. 



W. W. STOCKBERGER, Expert, Drug and Medicinal Plant Investigations. 



