Franz Xaver Veigl on Ayahuasca in Maynas
Franz Xaver Veigl, a German Jesuit who worked in the mission province of Maynas in the upper Amazon until the Jesuits were expelled in 1768, describes healers and visionary drinks there. He writes that people who drank "hayac huasca" saw "absolutely enormous visions" and seemed to travel far away, and, like other missionaries of his time, he treats this as dealings with the devil. English translation of Latin passages from his account of Maynas.
c. 1768–1785 (exact date unclear)
Source
Ayahuasca
Franz Xaver Veigl