the toxin acting in these cases is identical with the substance obtained by me. In order to produce its action the toxin and solutions containing it must be given intravenously. This is true of many other poisons. Possibly the toxin is rendered inactive by combination with a tissuecomponent when it is given subcutaneously. As to the pharmacological, character of the toxin little can at present be said. It seems to act as a protoplasmic poison.-It paralyzes the centers of the brain and cord, especially the respiratory center.