(123) 



2782. Arbutin (G2H16O7).— The principal medicinal constituent of the leaves of 



the same. A glucoside. 



2783. Cyclamen. Sow-bread. Bleeding nun.— The bulb of Cyclamen europaeum 



L. (Primulaceae — Primrose Family). Native of Europe and cultivated 

 for ornament. 



2784. Cyclamin. Arthanitin (C20H2A0) — A saponin-like glucoside existing in 



the preceding. 



2785. Siam benzoin. — A solid balsam exuding from wounds in the trunk of Styrax 



tonkinense Craib. {Styraceae — Storax Family). Native of and cultivated 

 in Siam. 



2786. Sumatra benzoin. — A similar balsam from S. Benzoin Dryander. 



2787. Benzoic acid. (CyHeOj).— An acid extracted from the preceding and existing 



in many other plants. 



2788. Manna. — The saccharine substance exuding from incisions in the bark of 



Fraxinus Ornus L. (Oleaceae — Olive Family). Native of Europe. 



2789. Privet. Ligustrum. Prim. Primwort. — The leaves of Ligustrum vulgare 



L. (Oleaceae — Olive Family). Native of Europe and cultivated for hedges 

 and for ornament. 



2790. Lilac leaves. — The leaves of Syringa vulgaris L. (Same family). Native of 



Asia and Europe and cultivated for ornament. 



2791. Syringin (C17H24O9 + H 2 0). — A glucoside derived from the leaves of the 



two preceding plants. 



2792. Gelsemium. Yellow jessamine. — The rootstock and roots of Gelsemium 



sempervirens Ait. (Loganiaceae. — Nux-vomica Family). Native of the 

 southeastern United States and adjacent islands. 



2793. Gelsemine (C22H38N2O4) — An alkaloid extracted from the preceding. 



2794. Gelseminine (C22H26N2O3). — Another alkaloid from the same. 



2795. Nux-vomica. Dog-button. — The seed of Strycknos Nux-vomica L. (Same 



family). Native of the East Indies. 



2796. Strychnine (C21H22N2O2).— The principal alkaloid of the preceding. 



2797. Brucine (QaJ^e^O* + 4H2O).— Another alkaloid from the same. 



2798. Ignatia bean. Bean of St. Ignatius. — The seed of Strychnos Ignatii Lindl. 



Native of the Philippine Islands. Contains the preceding alkaloids. 



2799. American Centaury. Rose pink. Bitter clover. — The herbage of Sabbatia 



angularis (L.) Pursh. (Gentianaceae — Gentian Family). Native of the 

 eastern United States. 



2800. Quinine flower. — The herbage of Sabbatia Elliotiii Steudel. (Same family.) 



Native of the southeastern United States. 



2801. Sabbatin. — A bitter glucoside extracted from species of Sabbatia. 



2802. Gentian. Yellow gentian. Gentiana — The rootstock and roots of 



Gentiana lutea L. (Same family). Native of Europe. 



2803. Gentianin. — The impure form of gentianic acid, extracted from the preceding. 



2804. Gentisin. Gentianic acid (CisH 6 2 (OH)20CHs).— The purified form of the 



preceding. 



THE DOGBANE FAMILY (Apocynaceae) 



2805. Geissospermum bark. Pao Pereirae bark. — The bark of Geissospermum 



Vellozii Allem. Native of Brazil and one of the ingredients of Indian 

 arrow-poisons. 



