This solution is made by adding to sterile water of the required temperature sufficient tincture of iodin to make the color of sherry wine. Add the iodin a few drops at a time, stirring until the sherry color is produced. SOLUTIONS OF FORMALDEHYD. All the preparations on the market (formalin, formol, formolose, etc.) contain 40 per cent. of formaldehyd gas. As the gas is the true germicidal principle, it is much the better plan, in stating the strength of dilute solutions of these preparations, to give the proportion of the gas present, and this is done in the formulæ below. 1 : 100 or 1 per cent. of True Formaldehyd Gas. Solution of formaldehyd, fʒvj (23 c.c.); Cold sterile water, Oij (1000 c.c.). This solution is approximately equivalent to 1 : 500 or ⅕ per cent. Solution of Formaldehyd. Solution of formaldehyd, ♏︎xxxviij (2.3 c.c.); Cold sterile water, Oj (500 c.c.) THIERSCH’S ANTISEPTIC SOLUTION. Saturated boric acid solution, Oj (500 c.c.); Sterile water, Oj (500 c.c.); Salicylic acid, gr. lxxv (5 gm.). Mix the salicylic acid with sufficient alcohol to dissolve it. Pour mixture into solution, and shake thoroughly. HARRINGTON’S SOLUTION. Bichlorid of mercury, gr. xxxij; Hydrochloric acid, 2400 c.c.; Distilled water, 12,000 c.c.; Alcohol (95 per cent.), 25,600 c.c. PICRIC ACID SOLUTION FOR BURNS. Picric acid crystals, gr. xx (1.3 gm.); Alcohol (95 per cent.), fʒij (8 c.c.); Cold sterile water, f℥viij (250 c.c.). CHLORID OF LIME SOLUTION. Chlorid of lime, ℥v (160 gm.); Water, Oviij (4 L.). SOLUTION FOR SORE NIPPLES. 1. Glycerin, f℥ss (15 c.c.); Boric solution, f℥ss (15 c.c.); Alcohol (95 per cent.), f℥ss (15 c.c.); Tannic acid, gr. xx (1.3 gm.). 2. Compound tincture of benzoin, f℥j (30 c.c.). Apply with a cotton swab or camel’s hair brush. NIPPLE OINTMENT. Sulphur sub., gr. x; Acid tannic, ʒj; Borax pulv., ℈j; Syrup simp., ℥j; Glycerini, ℥ss. Wash off before nursing. ARISTOL OINTMENT FOR CRACKED NIPPLES. Aristol, gr. xxv (1.6 gm.); Vaselin, ℥j (30 gm.). SOOTHING LOTIONS FOR THE HANDS. 1. Spirits camphor, } Glycerin, } āā f℥j (30 c.c.); Tr. benzoin, } Alcohol (95 per cent.), f℥v (150 c.c.). 2. Alcohol (95 per cent.) } Glycerin, } āā f℥j (30 c.c.); Tr. benzoin, } Distilled extract of hamamelis (witch-hazel), f℥ij (60 c.c.).