We met the priest in 1955 when we went through Tapuruquara on an expedition to the Colombian frontier. One year later, in 1956, we went with him to the WAIKA village situated near the headwaters of the Cauaborl River, a few miles from the Venezuelan boundary. It was the priest's third visit to the tribe, where we found about 200 Indians in their original, primitive state. They never had any previous contact with civilized people other than the priest and then, ourselves. In two later visits, we were able to observe and to film their daily village life, but we saw nothing of the snuff. vVe saw them dancing under the influence of the EPENA, but we \"ere not able to see the snuff prepared. When we asked, they told us that the ingredients did not grow nearby. Our relations improved with the repeated visits. On our fourth trip in 1960, we were received like old friends. We were shown the ingredients. "We saw that they were neither seeds of PIPTADENIA PEREGRINA nor of any other tree. They turned out to be two kinds of bark and the leaves of a small plant. For the first time, we were able to get some of the snuff by exchanging gifts. It was the same powder that I sent to Professor Holmstedt, who analysed it. He found tryptamine derivatives to be the active components. In 1965, finally, we had a chance to film the snuff-making process.