1Cerii Oxalas. Cerium oxalate. Dose, 2 - 10 grs.; 1 - 6 dgms. Ce2 (C204)3, 9H20. A nearly white, granular powder, odourless, tasteless. Insoluble in water and other ordinary solvents, soluble in dilute sulphuric and hydrochloric acids. Incompatibles, alkali hydrates.

Cetaceum. Spermaceti. A concerte fatty substance obtained from the head of the Sperm Whale, Physeter macrocephalus, and subsequently purified. Crystalline, pearly white, glistening, translucent masses, unctuous to the touch, odourless, and flavourless, Insoluble in water, almost so in alcohol, soluble in ether, chloroform, and boiling alcohol.

Unguentum Cetacei

20; White Beeswax, 8 Almond Oil by weight, 72; Benzoin, 2.

Charta (see Sinapis p. 93).

Chirata. Chiretta. The dried plant Swertia Chirata, collected when in flower. Stem 3 feet or more in length, purplish externally, with a pith within; branches, slender: leaves glabrous and entire; flowers small, numerous and in panicles: odourless; taste extremely bitter. Contains a bitter but no tannic acid.

Infusum Chiratae. Dose, 1/2 - 1 fl. oz.; 15 - 30 c.c. - 5; boiling Water, 100.

Liquor Chiratae Concentratus. Dose, 30 - 60 min.; 2 - 4 c.c. Alcoholic; by percolation.

Tinctura Chiratae. 30 - 60 min.; 2 - 4 c.c. - 10; Alcohol 60% to 100: by percolation.