A joint-lecture was held at the Associação Brasileira de Pharmaceuticos in Rio de Janeiro by Drs. Luiz ele Faria and Oswaldo de Almeida Costa of which we took the following short notes : The authors began with a detailed botanical description of the plant Yagê and gave a complete and original histological and histochemical study of the stem and leaves of the same. They asked then the numerous public wether the reappearance of a narcotic was to be met with joy or with sorrow, whose anesthetic properties were so very akin to those of novocaine. They gave an historical sketch of the substance from as far back as the days of the lncas Empire when the Yagê was known and made use of for its devinatory powers. Passing on to the many mythes and legendes concerning the plant that abound in the Province of the Amazonas River they quoted several explorers - brasilian and alien - that wrote on the narcotic and telepathic qualities of the drug. Having made a complete chemical study of the plant they isolated the alcaloid for the first time in Brasil ( 1930) and verified the existence of a great proportion of both a glucoside - saponin - and of lnuline - ; applying the methods of Draggendorf they determined the composition and fractionation of its extracts - achievvements not to be founcl on former analyses - and suggested that some changes be introduced in the classical methods of Barriga - Villalva. They commented on some observations regarding the behaviour and resistence of Yageine as against advanced putrefaction of ftesh . Further they gave a resume of the pharmacodynamical researches undertaken in Columbia, France and Germany. The conferance was brought to a finish with a series of observations relating to the many uses the drug has been put to in therapeutics; especially in cases of nervous diseases. A great number of micro-photographic pictures and drawings were displayed in the course of the lecture.