. Bulletin. Agriculture. U. S. DEPARTMENT OF AGRICULTURp:. BUREAU OF PLANT INDUSTRY- BULLETIN NO. 107. B. T. GALLOWAY, Chi^of Bureau. AMERICAN ROOT DRUGS. ^'fiRA^ BY ALICE HEXKEL. '^'^^ ^L Assistant, Drug-Plant Investigations. ISSTJED OfTOBFR 25. WASHINGTON: GOVERNMENT PRINTING OFFICE, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Bureau of Plant Industry. Washington : G. P. O.

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