It will be seen, in studying the symptoms which we have obtained from the poison of the crotalus, that there are very few among them which resemble the tuberculous lepra, and that this terrible malady will, therefore, have to be cured by some other means. Fortunately, homœopathy teaches us the method of discovering a suitable remedy in the place of the crotalus poison, which we now know has to be abandoned as a remedy for lepra, and the success which we have already obtained, enables us to indulge the hope, that the Brazilian lepra, as well as the elephantiasis of the Arabs, will soon disappear entirely, under the operation of the suitable dynamised homœopathic agent. The crotalus will become a useful adjunct to the lachesis proved by Doctor Hering; it is my belief that it affects the organism longer and more thoroughly than the latter, and will effect many cures which had to remain incomplete under the use of lachesis. The serpent from which this poison has been extracted, was caught in the province of Ceara. In this operation I was aided by the young practitioner who alone, four years ago, had protested against the dangerous experiment which was made in the hospital of the leprous patients, of which he was at that time chief physician. His noble heart revolted against the practice of risking human life, for the sake of a medical doctrine, and, soon after, he imitated the glorious example which Hahnemann had set him fifty years previous, by abandoning a lucrative practice, and the direction of two hospitals. Having first protested against the bite which the reptile was caused to inflict upon his patient, he now voluntarily exposed his own life for the purpose of extracting the poison, which was to be suitably attenuated in order to convert it into a curative agent. Several drops of the poison spirted on his face, and might have ended his life, if the inner corner of the eye had been touched as I first feared it was. At this day, when his suspicions have been abundantly confirmed by the physiological provings, Dr. J. V. Martins, is one of the firmest adherents of our rising School. May he live to see the error which he had instinctively rejected, completely extinguished by the brilliant light of medical truth.