Copaiba. Copaiba. Dose, 30 - 60 min.; 2 - 4 c.c. The oleo-resin obtained from the trunk of Copaifera Lansdorfii and probably other species. A more or less viscid liquid, generally transparent, light yellow to pale yellow-brown in colour; odour aromatic and peculiar; taste persistent, acrid and somewhat bitter. Soluble in absolute alcohol.

Incompatibles, hydrates of the alkalies and alkaline earths. 1Oleum Copaibae. Dose, 5 - 20 min.; 0.3 - 1.2 c.c. A colourless or pale yellow oil, with the odour and taste of copaiba. Soluble 1 in 1 of absolute alcohol.

Coriandri Fructus. Coriander Fruit. Dose 30 - 60 gr: 2 - 4 gms. The dried ripe fruit of Coriandrum sativum. Nearly globular, about 1/5 inch in diameter, brownish-yellow in colour and glabrous; odour aromatic; taste agreeable.

Oleum Coriandri. Dose 1/2 - 3 min.; 0.03 - 0.2 c.c. A pale yellow or colourless oil, with the taste and odour of the fruit.

Creta (See Calcium, p. 44).

Creosotum, Creosote. Dose, 1 - 5 min.; 0.05 - 0.3 c.c. A mixture of guaiacol, cresol and other phenols. A colourless or yellowish liquid, with an empyreumatic odour and acrid taste. Soluble 1 in 150 of cold water, more soluble in hot, readily soluble in alcohol, ether, chloroform and glycerin.

Incompatibles, many metal salts, such as those of silver and copper, albumin, ferric salts, nitric acid; explodes if triturated with oxidising agents.

3Mistura Creosoti. Dose, 1/2 - 1 fl. oz.; 15 - 30 c.c. - 0.2; Spirit of Juniper, 0.2; Syrup, 6; Water to 100.

3unguentum Creosoti

10; Hard Paraffin 40; Soft White Paraffin 50.