sible by the use of the extensive and extraordinarily well 
organized libraries and museums at Harvard University 
and by my associations with botanists at this institution. 
The present very brief paper on the overall distribu- 
tion of the use of narcotics and stimulants in Colombia 
is offered merely as an introduction to a longer and more 
detailed work on the subject which I am preparing as a 
Guggenheim Fellow in Ethnobotany at the Botanical 
Museum of Harvard University. 
For help and advice on numerous points, as well as for 
editorial assistance, my thanks are due especially to Dr. 
Albert F. Hill and Dr. Richard Evans Schultes of the 
Botanical Museum of Harvard University; and to Miss 
Siri von Reis and Mr. Arthur S. Barclay of the Gray 
Herbarium of the same University. I also wish to thank 
Miss Ruth Barton for her skillful execution of the map. 
Il. 
PRINCIPAL NARCOTICS AND STIMULANTS USED BY 
NATIVE TRIBES IN COLOMBIA 
Common name Identification Distribution 
Coca Erythrozylon Coca Lamarck Peru, Bolivia, Ecuador, 
Colombia 
Erythroxylon novogranatense West Indies, Trinidad, 
(Morris) Hieronymus Peru, British Guiana, 
Venezuela, Colombia(15) 
Yajé Banisteriopsis Caapi (Spruce Colombia, Brazil, Bolivia, 
ex Grisebach) Morton Peru 
Banisteriopsis inebrians Colombia, Ecuador, Peru 
Morton 
Banisteriopsis Rusbyana Colombia 
(Niedenzu) Morton 
Tetrapterys methystica Brazil (and Colombia?) 
R. E. Schultes 
Yopo Piptadenia peregrina Bentham Antilles, Guianas, Vene- 
zuela, Colombia, Brazil 
Yakee,Yato, Virola calophylla Warburg Colombia, Brazil, Peru, 
Parica Virola calophylloidea Markgraf Venezuela 
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