_Uses._—Valuable stimulant in a slow first stage. It is combined with castor oil to bring on labor at term. Castor oil 1 oz. and quinine sulphate 10 gr. is given as the first dose, followed in an hour by another 10 gr. of quinine, and an hour later by another. _Dose._—2–20 gr. =Regulin.= A mixture of agar-agar in dry form with extract of cascara sagrada. _Uses._—A laxative in chronic constipation. _Dose._—Teaspoonful to tablespoonful in stewed fruit or mashed potatoes, once daily. =Russian Oil= (_Liquid Petrolatum_). Laxative in pregnancy and puerperium. Acts mechanically and as a lubricant. Not unpleasant to take. _Dose._-½ oz. at bedtime, and, if necessary, before each meal. May be given to breast-fed babies in doses of gtts. xv three times daily. =Senna.= Laxative and purgative. Acts especially on the large intestine. Sometimes passes over in the milk to the child. _Dose._—Fl. ext. 1–4 teaspoonfuls. In compound licorice powder the dose is 30–80 gr. (about 10 gr. of senna to the dose). =Silver Nitrate.= Caustic, antiseptic, stimulant, irritant and antigonorrhœic. Table salt neutralizes it. _Uses._—2% solution in water for pruritus vulvæ. 1% solution dropped into the eyes of the newborn to prevent ophthalmia neonatorum. Do not neutralize the 1% solution. ¼ gr. silver nitrate with 2 gr. of pepsin in capsule for pernicious vomiting of pregnancy. =Sodium Bicarbonate= (_Baking powder_). Antacid, antirheumatic. _Uses._—Gout, dyspepsia, acid stomach, acidosis, vomiting of pregnancy. Soothes the skin when burned. =Sodium Chloride.= (Salt.) For normal saline use 10 gr. to 3½ oz. of water. For physiological salt solution, add 15 gr. of Sod. Carb. to every 3½ oz. of normal saline as made above. =Sodium Citrate.= A white odorless, granular powder with cooling salty taste. _Uses._—Diuretic, antipyretic and refrigerant. Retards the coagulation of albumin in milk and aids the digestibility of proteins. May be indicated in gout and cystitis. _Dose._—Internally, 15 to 60 gr. In the modification of cow’s milk about two grains should be used for each ounce of the mixture. =Spirits of Nitre, Sweet= (_Spirit Nitrous Ether_). 4% solution of nitrous ether in alcohol. Diaphoretic, diuretic, antipyretic, stimulant, antispasmodic. _Uses._—Fever, dropsy, vomiting of pregnancy, colic, anuria. _Dose._—For adult, 20–60 gtts. For infants small doses often repeated. =Stramonium= (_Jimson Weed_). Hypnotic, narcotic, antispasmodic. _Uses._—For hæmorrhoids take Ung. Stramonii and Ung. Galli in equal amounts and apply. =Urotropin.= A white powder soluble in water. Urinary antiseptic, diuretic.