The thickened JV7rola-resin is then rolled with the 
fingers into tiny pellets the size of coffee beans, and these 
are rubbed in the salt-like residue from the leached-out 
lecythidaceous bark ashes. The pellets, thus coated, are 
ingested whole or dissolved in water and drunk. From 
three to six pellets—called oo-/od-he —are taken initial- 
ly, and the intoxication is said to begin within five 
mintes and last up to two hours. More pellets may be 
taken when the effects of the drug begin to lessen in 
intensity. 
According to my informant’s description, all kinds of 
visual hallucinations are experienced. The narcotic is 
taken usually ina group comprising from three to eight 
or more men, normally including the payé or witch- 
doctor. Only the payé may take the initiative in pre- 
paring the drug. [tis taken not regularly but at irregular 
intervals when the need arises, and only for divination, 
to ‘‘see and converse with the little people’’, to prophecy, 
to find lost property, to ‘‘study’’, to ‘‘talk with’’ people 
from other tribes over great distances and to ensure luck 
in the hunt. 
Dr. Horacio Calle, anthropologist at the Universidad 
Nacional de Colombia, has recently sent me some very 
interesting data and botanical specimens collected from 
informants of the Muinane tribe, now living in the vi- 
cinity of Leticia. These Indians lived originally in the 
Karaparanid-I garaparand-Kahuinari area, the general re- 
gion inhabited by the Witotos. 
According to Calle, the Muinanes call the Viro/a tree 
kutrucu and the drug prepared from its resin Autru. The 
related Bora tribe likewise knows the narcotic which, in 
their language, is hurru. 
Several very young leaves, collected by Calle, are 
difficult to identify as to species. According to Calle, 
botanists at the Instituto de Ciencias Naturales in Bogota 
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