COLL*

89

Collyrium Zinci Sulpiiatis. Mix ^ss of sulphate of zinc with Oj ofdistilled water.

Collyriuji Zinci Sulpiiatis Campiiohatum. Rub up gr. xv of sul-phate of zinc with gr. x of camphor, and Jvj of boiling water, andstrain.

Collyriuji Zinci Sulph. cum Plumb. Acet. Mix gr. viij each ofsulphate of zinc and acetate of lead with distilled water, and strainto make a collyrium.

Collyrium Zinci Iodatis. Mix gr. iv of iodate of zinc with 3yj ofdistilled water, and apply in scrofulous ophthalmia.

Colocyntiiidis Pulpa. L. E. D. P. Pulp of Bitter Apple, Cticumiscolocynthis. It is the dried pulp that is used, which is white,spongy, of a nauseous and very bitter taste, but no smell.Adulterated, or injured in the drying, in which case it is dirty brown,or deep grey. It is not good when the fruit is large, and the seedsblack and pointed.Incompatible with the fixed alkalies, acetate of lead, nitrate of silver,

and sulphate of iron.Medicinally it is violently cathartic, deobstruant, alterative, diuretic,emmenagogue, and anthelmintic. Dose gr. iii to gr. x in obstructionsof the abdominal viscera, dropsy, constipation, epilepsy, and lethargy ;but is usually too violent alone, and ought to be triturated withgum or oil, or given in infusion or decoction, or in the compoundextract, which see. Camphor mitigates its violence.Enters into Ext. Colocyntbidis. L. Ext. Colocynth. Camp. L. D.Pil. Aloes cum Colocynthide. E. D.

Colocyntin. A bitter resin extracted from colocynth. (Vauquelin.)

Colomba. See Calumba.

Colophony. See Resina Flava.

Coloquintida. See Colocynthid. Pulpa.

Colours in Perfumery. See Paints and Rouge.

Colours in Painting. See Oil Colours and Water Colours.

Coltsfoot. See Tussilago.

Coltsfoot (Essence of), a nostrum which contains no coltsfoot, butis composed of a solution of balsam of Tolu, in compound tinctureof Benzoin and spirit of wine. Dangerous in coughs, from its beingstrongly stimulant.

Columbic Acid is obtained by fusing the ore of columbium with thecarbonate or the bisulphate of potass, whence results a soluble co-lumbate of potass, and the acid is precipitated in form of a whitehydrate.Soluble in muriatic, sulphuric, and some vegetable acids. Insoluble inwater.