(124) 



2806. Geissospermine (Q9H24N2O2 + H 2 0).— The poisonous alklaoid of the pre- 



ceding. 



2807. Vellosine. Pereirine. (Q9H24N2O). Another alkaloid from the same. 

 2807.1. Quebracho, or white quebracho bark. Aspidosperma. — The bark of 



Aspidosperma quebracho-bianco Schlecht. Native of Argentine and 

 adjacent regions. 



2808. Aspidospermine (C22H30N2O2). — The principal alkaloid of the preceding. 



2809. Aspidosamine (C22H28N2O2). — Another alkaloid from the same. 



2810. Quebrachine (C21H26N2O3). — Another alkaloid from the same. 



281 1. Quebrachamine. — Another alkaloid from the same. 



2812. Oleander leaves. — The leaves of Nerium Oleander L. Native of the Mediter- 



ranean region and cultivated for ornament. 



2813. Conessine (C24H40N2).— An alkaloid extracted from the preceding and occur- 



ring in related plants. 



2814. Neriantin. — A glucoside extracted from the same leaves. 



2815. Oleandrin. — Another glucoside from the same. 



2816. Canadian hemp. Apocynum. — The rootstock and roots of Apocynum 



cannabinum L. Native of North America. 



2817. Apocynin. — An active constituent extracted from the preceding. 



2818. Cynotoxin (2oH 23 6 ). — The poisonous and medicinal glucoside of Apocynum. 



2819. Alstonia. Dita bark. Australian quinine bark or fever bark. — The 



bark of Alstonia constricta F. Muller. Native of Australia. 



2820. Chlorogenine. Alstonine (C21H20N2O4.3IH2O).— The principal alkaloid of the 



preceding. 



2821. Echitamine. Ditaine. (C22H28N2O4.4H2O).— Another alkaloid from the 



same. 



2822. Porphyrine (C21H25N3O2). — Another alkaloid from the same. 



2823. Green Strophanthus.— The seeds of Strophantus Kombe Oliver. Native of 



tropical Africa. 



2824. The same in their pod. 



2825. Strophanthin (C4oH 66 Oi 9 ).— A poisonous and medicinal glucoside of the 



preceding and other species of Strophanthus. 



2826. Thevetia seeds. Yellow oleander. Exile tree.— The seeds of Cerbera 



Thevetia L. Native of tropical America and cultivated. An ingredient 

 of arrow-poisons. 



2827. Cerberin. Cerberid. (C25H38O12).— A glucoside extracted from the preced- 



ing. 



2828. Curare. Woorara. — A mixture of extracts of the preceding and other 



poisonous plants of South America. The principal arrow-poison of the 

 South American Indians, and differing in composition among the various 

 tribes. 



THE MILKWEED FAMILY {Asclepiadaceae) 



2829. Gymnema leaves. — The leaves of Gymnema sylvestre R. Br. Native of British 



India. 



2830. Gymnemic acid (CkHssOij).— An acid extracted from the preceding and 



possessing the power to destroy temporarily the power of tasting bitter or 

 sweet. 



