The use of factitious airs in Consumption is now very much abandoned. No essential benefit has ultimately appeared to be derived from them; although in the first instance, they produced some apparently good effect. Of much more advantage is a sea-voyage and a mild climate. The benefit evidently derived from sea-voyages has been attributed to various causes. The nausea and vomiting from sea-sickness, the uniform motion and gentle regular exercise produced by sailing, and the uniformity and mildness of the atmosphere of the ocean, so evident at a distance from the land, probably all combine in producing these happy results. We can hardly suppose, however, with Dr. Mudge, that the exhalations from the tar and pitch about the ship, taken into the lungs in respiration, have any agency in the effect produced. But whatever be the cause, it is not at all unfrequent for consumptive patients to experience immediate relief after having been a few days at sea. A sea-voyage to produce permanent benefit, should be long continued, and what is of still more importance, terminate in a mild climate. Every winter, instances occur in this city, of consumptive patients being restored to health by a voyage to the south of France, or some other country of similar temperature. The climate most grateful to these patients is one whose temperature is uniform, not subject to any sudden variations, and where the atmosphere is dry and pure. The island of Madeira possesses all these requisites. The part of it best adapted to the purpose in question is thus described by Dr. Adams, a physician of that island, in a letter to his friend in London:-- “The valley of Funchall is defended by immense hills from every wind but the south, where it is open to the sea-breeze; this preserves a temperature so even, as is unknown in any other part of the world. Our winters may be compared to your summers in every thing but the length of days, and those sudden changes from heat to cold, to which you are subject. The thermometer with us is often steady within doors, or varies scarcely a degree for weeks together. During winter its whole range is from 58 to 65; and in summer, from 70 to 75, rarely amounting to 80; the heat being always tempered by a breeze in proportion to the force of the sun. The dryness of our atmosphere is not less remarkable.” If this description be correct, Madeira has a climate possessing every requisite to make it most favourable to phthisical patients. The southern parts of the United States are frequently resorted to, also, by the consumptive with great benefit. I have had the satisfaction of seeing a young friend return from Charleston, a short time since, perfectly restored to health, who, during the last autumn, was attacked with repeated hæmoptysis and other symptoms of Incipient Phthisis.