After the end of this work, E. Merck in Darmstadt told me that the banisterin was chemically identical to his findings with the alkaloid Harmin from Peganum Harmala, the steppe plant, to which the composition C12H12N20 is obtained. I myself did not work with this much-studied base, but can only be seen from the available communications of such as an agreement to increase the motor excitability to cramps. Only further investigations, including in humans, will be made sure to testify.