A young gentleman, aged twenty-six, who had passed four winters in the south of Europe for a cough, with pain in his chest, and occasional expectoration of a thick maturated discharge, frequently streaked with blood, consulted me on account of swelled glands in his neck, which he had had from his infancy, but which were at that time particularly troublesome. I desired him to use a solution of hydriodate of potass in the dose, of twelve drops three times a-day. In the course of two months, the swellings in the neck, which had pained him from his infancy, were quite dispersed, and at the same time his sufferings in the chest were so much diminished that he requested to be allowed to continue the medicine. I allowed him to use it a fortnight longer, at the end of which time he was quite free from complaint. He subsequently had another attack of his chest complaint, and wrote to me from Thoulouse to request directions for renewing the use of the medicine, under the care of a French physician. Before my letter reached him, he was carried off by an attack of some violent complaint, of which I never could learn the history. I have exhibited this medicine in several such cases, and frequently with the most marked good effects. In fine, I have not the smallest doubt of its efficacy in relieving many diseases of the chest, in which all the general symptoms, as well as all the local means of exploring the condition of the lungs, which have lately been so much attended to in France, have given me the most satisfactory evidence of the presence of tubercles. I will not yet assert, however, that the use of iodine has been followed by the absorption of tubercles in the lungs. This important fact must not be affirmed hastily; but I trust I shall be enabled, at a future period, to establish it to the satisfaction of every one, or to explain the beneficial action of the medicine on other grounds. Dr. Baron, in his work already quoted (p. 221), has related a case of encysted dropsy of the ovarium, in which the use of iodine was attended with the most manifest and rapid benefit. I have seen it used in a case of the same kind, in which a swelling that had been twice tapped, and which then filled the greater part of the abdomen, was almost completely removed. The patient, a woman of sixty-two, has recovered her strength; she has resumed the appearance of health, and has remained eighteen months free from dropsical symptoms. I have made trial of iodine in two cases of ascites without benefit. I have also made use of it in a case of amenorrhœa, according to Coindet’s advice, without the smallest advantage; nor have I been able to satisfy myself that it possesses any power over the uterine system. CONCLUSION.