During a recent brief visit to Araracuara on the Rio Caqueta in the Comisaria del Amazonas of Colombia, it was discovered that the Witoto Indians, who cultivate Banisteriopsis Caapi, do not employ it as a drink but smoke the dried and crushed leaves and young bark. Although the Andoques, who live in the same area, apparently use Banisteriopsir as a drink, there is evidence not yet fully substantiated that they likewise smoke the drug; but their usual employment of it is as a drink. Several juvenile, cultivated plants of Banisteriopsis Caapi were noted in the locality. Conversation with a knowledgeable Witoto medicine man indicated that leaves are dried, broken into small pieces and prepared in cigarette-form in pieces of the leaves of the Heliconia plant. It is smoked in ceremonies by medicine men for its vision-producing properties. It is never smoked with tobacco for, according to the lndians, the intoxication produced would be extremely strong and long-lasting and would induce very unpleasant after-effects. The Witoto Indians are noteworthy in using biodynamic plants in ways that differ markedly from those of other neighbouring tribes in the northwestern Amazonia.