Although the samples I had collected were lost due to my abrupt departure in August 1914, I believe that the liane used to prepare the drink I saw with Spruce, as seen, discovered in 1853 under the name ď ayahuasca or caapi and discovered in the botanical point of view. The region where it grows, the circumstances of its absorption, its physiological effects, all I believe is likely that there is identity, but not affirming it.