2. (STRONGER.) From sal ammoniac, 1 to 2 oz.; water, 1 pint. In contusions, chronic tumours, extravasations, chilblains, &c., when the skin is not broken. Both are stimulant and resolvent or discutient. Vinegar is often substituted for the whole or part of the water, and sometimes a fifth or sixth part of rectified spirit is added. See also LOTION OF CHLORIDE OF AMMONIUM.
=Lotion, Hydrochlo''ric.= _Syn._ LOTIO ACIDI HYDROCHLORICI, L. _Prep._ 1. Hydrochloric acid, 1 fl. oz.; water, 1 pint. In lepra, and several other skin diseases.
2. (Foy.) Hydrochloric acid, 1 part; water, 16 parts. In chilblains, when the skin is unbroken.
=Lotion, Hydrocyan'ic.= _Syn._ LOTIO HYDROCYANICI, L. ACIDI HYDROCYANICI, L. _Prep._ 1. (Magendie.) Medicinal hydrocyanic acid, 1 to 2 fl. dr.; lettuce water, 1 pint. In hepatic affections.
2. (Sneider.) Medicinal acid, 1-1/2 fl. dr.; rectified spirit and water, of each 6 fl. oz.
3. (A. T. Thomson.) Medicinal acid and rectified spirit, of each 2 fl. dr.; acetate of lead, 16 gr.; distilled water, 7-1/2 fl. oz. In impetigo, &c.
_Obs._ Lotions of prussic acid are employed to allay pain and irritation in various chronic skin diseases, especially the scaly and itchy eruptions; and in cancer, &c., with variable success. See HYDROCYANIC ACID.
=Lotion of Hyposul'phite of Soda.= _Syn._ LOTIO SODÆ HYPOSULPHITIS, L. _Prep._ (Startin.) Hyposulphite of soda and alum, of each 1-1/2 dr.; eau de Cologne, 1/2 fl. oz.; rose water, 7-1/2 fl. oz.; in the advanced stages of acne.
=Lotion of I'odide of Ar'senic and Mer'cury.= _Syn._ LOTIO ARSENICI ET HYDRARGYRI HYDRIODATIS, L. _Prep._ From Donovan's solution, 1 part; water, 9 parts. In lepra, psoriasis, and other scaly skin diseases. See SOLUTION.
=Lotion of Iodide of Potas'sium.= _Syn._ LOTIO POTASSII IODIDI, L. _Prep._ 1. From iodide of potassium, 1 to 2 dr.; water, 1 pint. In the usual cases in which ioduretted preparations are employed.
2. (Dr O. Ward.) Iodide of potassium, 1 dr.; water, 3/4 pint. In itch. (See _below_.)
=Lotion of Iodide of Zinc.= _Syn._ LOTIO ZINCI IODIDI, L. _Prep._ (Ross.) iodine, 1-1/2 dr.; zinc filings, 1 dr.; water, 8 fl. oz.; digest with heat until the liquid becomes coloured, then filter. In enlarged tonsils.