. General therapeutics and materia medica: adapted for a medical textbook (Volume 2). also been called CoWs-fopt. The propertiesseem to be dependent upon volatile oil, and a bitter resinous matter; both Fg-137. of which are extracted by dilute al-cohol. It resembles serpentaria in its pro-perties ; and is sometimes used as asubstitute for ginger; so that itmight, with propriety, be classedamongst Excitants. 21. Contrayerva.—The root ofDorstenia Contrayerva; Sex. Monogynia ; Nat. )—a native of Mexico, theWest Indies, and certain parts ofSouth America—is imported chi
. General therapeutics and materia medica: adapted for a medical textbook (Volume 2). also been called CoWs-fopt. The propertiesseem to be dependent upon volatile oil, and a bitter resinous matter; both Fg-137. of which are extracted by dilute al-cohol. It resembles serpentaria in its pro-perties ; and is sometimes used as asubstitute for ginger; so that itmight, with propriety, be classedamongst Excitants. 21. Contrayerva.—The root ofDorstenia Contrayerva; Sex. Monogynia ; Nat. )—a native of Mexico, theWest Indies, and certain parts ofSouth America—is imported chieflyfrom the West Indies, and the Bra-zils. Its odour is aromatic and pe-culiar; taste warm, bitterish andslightly acrid. Its virtues appear tobe dependent upon volatile oil, andbitter extractive. It is considered to resemble ser-pentaria ; and has been prescribed in the same cases; but it is rarelyused in this country, or indeed anywhere. The dose of the powder is9j. to 3ss.; but it is best given in infusion: (Contrayerv. 3J.; Aq. D<»se, ioiss.)VOL. II.—1. Dorstcuia contrayerva. TONICS.
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