This section is from the book "A Text-Book Of Materia Medica And Pharmacy For Medical Students", by Velyien Ewart Henderson. Also available from Amazon: A Text-Book of Materia Medica and Pharmacy for Medical Students.
Alumen. Alum. - Dose, 5 - 10 grs.; 3 - 6 dgms.
Soluble 1 in 10 of cold, 1 in 1/3 of hot water; soluble in glycerin; insoluble in alcohol.
Incompatibles, alkali hydrates, or carbonates, borax and lime water (citrates, tartrates, glycerin, sugar, acacia, in part prevent precipitation); phosphates, tannic acid, tartaric acid; lead, barium, mercury and iron salts.
Potassium alum from which the water of crystallization has been driven off by heat.
16.66 Water, 6.25; Glycerin, to 100. 2Kaolinum (See p. 69.)
Ammoniacum. Ammoniacum. - Dose, 5 - 15 grs.; 3 - 10 dgms. A gum-resin exuded from the flowering and fruiting stem of Dorema Am moniacum. It forms small pale yellowish or brownish tears or masses, hard and brittle when cold, softening when warmed. Odour, faint; taste acrid and bitter. Triturated with water forms a white emulsion; about 60% is soluble in alcohol.
164; Mercury, 41; Olive Oil, 1.75; Sublimed Sulphur, 0.25.
Dose, 1/2 - 1 fl. oz.; 15 - 30 c.c. - 3; Syrup of Balsam of Tolu, 6; Water, to 100.