(125) 



2831. Condurango. — The bark of Marsdenia Condurango Nichols. Native of 



Ecuador. 



2832. Condurangin. — A mixture of glucosidcs of the preceding. 



THE MORNING-GLORY FAMILY (Convolvulaceae) 



2833. Scammony root. — The root of Convolvulus Scammonia L. Native of western 



Asia. 



2834. Mexican, or false, scammony. — The rootstock or tuber of I pomoea orizabensis 



(Pel.) Ledan. Native of Mexico. 



2835. Resin of scammony. — The resin extracted from No. 2833. 



2836. The same in the powdered state. 



2837. Convolvulin (CsiH 6 oOio).— A glucoside extracted from the preceding and 



related plants. 



2838. The same in the powdered state. 



2839. Jalap. Jalapa.' — The tuberous root of Exogonium purga (Wend.) Lindley. 



Native of Mexico and cultivated as a drug. 



2840. Resin of jalap. — The resin extracted from the preceding. 



2841. Alkanet. Alkanna. — The root of Anchusa officinalis L. (See No. 13 1 1.) 



2842. Alkannin. Alkanet extract. — A coloring extract of indefinite composition 



extracted from the preceding. 



THE MINT FAMILY (Labiatae) 



2843. Thyme. Thymus. Garden thyme. (See No. 1585.) 



2844. Thymol (GoH 14 0). — A phenol, the active constituent of thyme. 



2845. Thymene (CioHu). — A hydrocarbon from the same. 



2846. Japanese peppermint. — The herbage of Mentha arvensis piperascens. Native 



of eastern Asia. 



2847. Japanese menthol or peppermint camphor (C10H20O). — The camphor ob- 



tained from the preceding and other species of Mentha. 



2848. Peppermint. Common peppermint. Mentha piperita L. (See No. 1583). 



2849. American menthol. — Menthol derived chiefly from the preceding. 



THE POTATO FAMILY (Solanaceae) 



2850. Belladonna leaves. — The leaves of Atropa Belladonna L. Native of Europe 



and cultivated as a drug. 



2851. Belladonna root. — The root of the same plant. 



2852. Atropic acid (C 9 H 8 2 ). — An acid existing in the two preceding. 



2853. Atropine. Atropia (G7H23NO3). — The principal alkaloid of the same plant 



and also existing in related plants. 



2854. Tropic acid. Isotropic acid (C9H10O3). — Another acid derived from the 



same plants. 



2855. Belladonnine (C17H21NO2). — Another alkaloid existing in the same plants. 



2856. Tobacco. (See No. 2066.) 



2857. Nicotine hydrochloride (C10H14N2.2HCI). — The compound of hydrochloric 



acid with nicotine, the principal alkaloid of tobacco. 



2858. Potato sprouts and tops. — The young stems and foliage of Solanum tuberosum 



L. Native of America and everywhere cultivated as a food, except in hot 

 countries. 



