May 5th. We set off on foot following our boat, which had reached Caìo Pimichín by portage. We had to wade through numerous streams. This journey demands caution because water snakes teem in the marshes. Indians pointed out tracks in the wet clay left by the small black bears that are so common on the Temi banks. They are different in size from the Ursus americanus: missionaries call them oso carnicero to differentiate them from the oso palmero or tamanoir Myrmecophaga jubata) and the oso hormiguero or tamandua ant-eater. Two of these animals, which are good to eat, defend themselves by rising up on to their hind legs. Buffon's tamanoir is called uaraca by the Indians: they are irascible and brave, which is strange given that they are without teeth. As we advanced we came across some accessible clearings in the jungle. We picked new species of coffea, a Galega piscatorum, which Indians use like the jacquinia, and a composite plant of the Temi river, as a kind of barbasco to stun fish; and a large liana known locally as bejuco de mavacure, which gives the famous curare poison.