HOR′TUS-SICCUS. See Herbarium.
HOS′PITAL GAN′GRENE. Syn. Phagedæna gangrenosa. L. A species of ulcerating mortification, particularly characterised by its infectious nature, and its tendency to attack wounds and ulcers in crowded hospitals, so that often the most trifling operation cannot be performed with safety. Under its influence the parts are rapidly destroyed, not by the formation of ordinary sloughs, as in common mortification, but by their conversion into an ash-coloured viscid substance interspersed with bloody specks. The treatment is similar to that noticed under Mortification, but here, above all things, thorough ventilation must be established, and persevered in, and, when possible, change of situation sought.
HUILE. [Fr.] Oil; a term applied to various substances and preparations on account of their smoothness, consistence, or real or imaginary emollient or oleaginous nature. See Liqueur, Oil, &c.
Huile Acoustique. Prep. From garlic and bay leaves, of each, 1⁄2 oz.; olive oil, 1⁄2 lb.; boiled together for 15 minutes, and strained. Used in ear-ache and deafness. A little is dropped on cotton wool and placed in the ear.
Huile, Antique. See Oils (Hair).
Huile Liqueureuse. Prep. 1. (De la Rose.) From eau de rose, 1 part; simple syrup, 2 parts; mixed together.
2. (Des fleurs d’oranges.) From orange-flower water and syrup, as No. 1.
3. (De vanille.) From essence of vanilla, 1 dr.; simple syrup, 1 pint.
Obs. The above are kept in small decanters, and used to flavour water, grog, liqueurs, &c., instead of sugar or capillaire; also to perfume the breath. Other flavoured syrups, for the same purposes, are prepared in a similar manner.
HU′MIC ACID. Syn. Ulmic acid. See Humus.