1800-1950 / Religion
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Caapi and Niopo in “On Some Remarkable Narcotics of the Amazon Valley and Orinoco”
Richard Spruce on ayahuasca, yopo/paricá, and Amazonian medicine-men
c. 1870; published 1908
Source
Richard Spruce
Indigenous Knowledge, Ethnobotany

Nitrous Oxide and the Anaesthetic Revelation in The Varieties of Religious Experience
1902
Source
William James
Nitrous Oxide, Religion