CASE IV. points precisely in the same direction. In May 1868 I was consulted by a gentleman of 19, whose father died of phthisis. He had been steward on board a packet plying between Liverpool and New York; got wet through on his last voyage, lung symptoms soon set in, and he considers that his present ones date from three months ago. He has constant cough, for which he can get no relief, profuse sweatings, hectic, and extreme emaciation; in short, all the ordinary signs of softening tubercle in the right apex, and had been sent home by medical men in Liverpool to Handsworth,—just to die. However, he too rallied under careful nursing, and with the help of ordinary medicinal agents, and by July was able to walk to my house, and begin inhalations of oxygen in proportion of 6 pints to 60. At this time the above-named symptoms were all better, and his principal complaint was of difficulty of breathing, and of pain in the side of the chest, and these did not yield to medicines or to liniments. He continued to inhale twice a week for two months, and at the end of that time was sufficiently recovered to seek for a situation. He is now in the employ of the London and North-Western Railway Company, has gained two stone, he says, and is 6 ft. 4 in. in height. I had an opportunity of examining his chest last week, and detected only dry and interrupted respiration in one apex. I should add that he continued the tinct. fer. perchlor. and cod oil during and after his treatment by gas; but he distinguished relief to the dyspnœa from the gas alone. CASE V.—Rev. W. M——, aged 34, lost father, brothers, and sisters from phthisis. In February 1868, when I first saw him, the prominent symptoms had lasted six months—the dyspepsia, the tight cough, the loss of voice, and the emaciation.