VETERINARY DRUGS 677 



in small doses, anodyne and anti-spasmodic. Dose, of the extract, ^ drachm 



to 2 drachms. 

 Calomel, Subchloride of Mercury. — Irritant, purgative, alterative, and 



antiphlogistic. Dose, 20 grains to 1 drachm. 

 Camomile ; Flowers of Aiithemis Nohilis. — Stomachic, carminative, and 



mildly tonic. Dose, of extract, 1 to 4 drachms. 

 Camphor; a peculiar concrete volatile oil from C amphora officinarum. — 



Slight stimulant ; then sedative and anti-spasmodic. Dose, 1 drachm 



to 4 drachms. 

 Cantharides ; Blistering or Spanish Flies. — Given internally, irritant, 



stimulant, and diuretic ; externally, rubefacient and vesicant. Dose, 



4 grains to 20 grains. In homoeopathic doses it is given for bloody 



urine. 

 Cantharides, Ointment of ; Blistering Ointment. — For recipes, see page 645. 

 Canthaeides, Tincture of ; Liquid Blister. — Powdered cantharides, 1 ounce ; 



proof spirit, 1 6 ounces ; digest for several days, and strain. An active 



sweating or vesicating fluid. 

 Cantharidis Acetum. — A solution in ten parts of acetic acid of one of 



powdered Cantharides. More active than the liquid blister. 

 Cascarilla; Bark of Croton Eleuteria. — A warm bitter tonic. Dose, 



1 ounce to 2 ounces, generally made into an infusion. 



Castor Oil ; expressed from Ricinus communis. — Purgative. Dose ^ to 1 



pint. 

 Catechu ; extract from Acacia Catechu. — Astringent and antiseptic. Dose, 



2 drachms to 5 drachms. 



Chalk ; Carbonate of Lime. — Antacid and astringent in diarrhoea. Dose, 



1 ounce to 2 ounces. 



Charcoal ; Carbon. — A powerful antiseptic ; chiefly used externally to 



foul wounds. 

 Chloroform. — Anaesthetic, stimulant, and antispasmodic. Inhaled in 



doses of from |^ to 2 ounces. Given internally — dose, 1 drachm to 



2 drachms. 



Cinchona ; Bark of several species of Cinchona. — Astringent and tonic. 



Dose, 1 ounce to 3 ounces. 

 CoLCHicuM ; Meadow Safii'on. — Cathartic, diuretic, and sedative. Dose 



of the root or seeds, ^ drachm to 2 drachms. 

 Copper, Sulphate of. — Tonic and astringent. Used externally it is a 



mild caustic. Dose, 1 drachm to 2 drachms. 

 Copper, Subacetate of; Verdigris. — An external application in grease 



and quittor. 

 Corrosive Sublimate, Chloride of Mercury. — An irritant poison. Used 



as a caustic, or as a wash, dissolved in water, for mange, lice, etc. 

 Creosote. — Sedative, anodyne, asti-ingent, and antiseptic. Dose, 20 to 



30 minims. Used externally in skin diseases, mixed with lead or oil 



— 1 drachm to 3 or 4 ounces. 

 Croton oil and seeds; Croton Tiglium. — Internally a strong cathartic; 



externally a counter-irritant. Dose, 10 to 15 seeds; of the oil, 15 to 



20 drops. 

 Digitalis ; Foxglove ; leaves of Digitalis Purpurea. — A strong sedative 



and diuretic. Dose, of the powdered leaves, 20 to 30 grains. 



