(From fumus, smoke). Fumigation. By the subtile fumes inspired, or sometimes swallowed, much benefit or injury may be produced. The latter is evident from the palsies produced among workers in lead and quicksilver mines, and the benefits derived from impregnating the air with salutary materials. Catarrhs and catarrhous coughs are relieved by fumes received with the breath, sometimes of warm water, at others, it is said, of aether; and by the same method expectoration is assisted in asthmas: even ulcers in the lungs have, it is said, been healed by this method. The advantage of fumigations in the cure of venereal ulcers is well known, though the practice is now disused. (See Inhalatio.) But this plan has been lately revived by Mr. Abernethy, and is supposed to affect the constitution when other methods have failed, and to produce its effects in a comparatively shorter time. Lalonette's powder was supplied by precipitating the oxide of mercury from calomel by means of ammonia, and it is sprinkled on a hot iron, while the fumes are confined by the patient being placed in a box. Partial mercurial fumigations are used also in white swellings of the knee, and swellings of the breast.

Fumigatio nitrosa. See Contagion.