The bark of Cinchona succirubra Pavon (nat. ord. Hubiaceae), containing not less than 5 per cent. of its peculiar alkaloids.


Ecuador, west of Chimborazo.


In quills or incurved pieces, varying in length, and from

2 to 4 or 5 mm. thick; the outer surface covered with a grayish-brown cork, more or less rough from warts and longitudinal warty ridges, and from few, mostly short transverse fissures; inner surface more or less deep reddish-brown and distinctly striate; fracture short fibrous in the inner layer; powder reddish-brown; odor slight; taste bitter and astringent.

Constituents. - See Cinchona.

Dose, 10 to 60 gr.; .60 to 4.00 gm.


Tinctura Cinchonae Composita. Compound Tincture Of Cin

chona. Red Cinchona, 100; Bitter Orange Peel, 80; Serpentaria, 20; Glycerin, 75. By maceration and percolation with Alcohol, Glycerin and Water to 1000.

Dose, 1 to 4 fl. dr.; 4. to 15. c.c.