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Schrötter, of the University of Vienna, has announced to his colleagues of the Society of Physicians that he has made a partial investigation regarding the alleged discovery of the immunity of a certain class of artisans in Austria against tuberculosis, and he has come to the conclusion that that disease is very rare in those workshops where the cyan-metals, as they are called, cyan-gold and cyan-silver, are employed. He holds that the hydrocyanic acid is the efficient element in these chemicals, and that he has data sufficient to warrant the systematic trial of that agent as a bactericide in tuberculosis. Incidentally, it may be remarked that he has found that not only is it a very rare occurrence, among the workmen of the class referred to, for pulmonary disease to attack one of them, but also it is often remarked that those who come from other places and other works
HYDROCYANIC ACID ANTIDOTAL TO TUBERCULOSIS.. JAMA. 1891;XVI(9):311-312. doi:10.1001/jama.1891.02410610023006