A book of valuable information for growers as well as collectors of medicinal roots, barks, leaves, etc. Partial Contents: medicinal value, wild plants, diseases, marketing and prices, medicinal qualities, China, Michigan mint farm, Golden Seal, Snakeroot, Pokeweed, Mayapple, Seneca Snakeroot, Lady's Slipper, Forest roots and plants, Thicket plants, Swamp and Field Plants, Dry and rich soil plants, Medicinal herbs and shrubs. Illustrations.