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A valatile alkaloid extracted from Capsicum annuum or from capsicin.

Am alkaloidal principle obtained from the celandine, and named from the red color of its salts, It is a coloriess crystalline substance, and acts as an acrid narcotic poison. It is identical with sanguinarine.

he bark of any species of cinchona containing three per cent. or more of bitter febrifuge alkaloids; Peruvian bark; Jesuits' bark.

One of the quinine group of alkaloids, found especially in red cinchona bark. It is a white crystalline substance, C19H22N2O, with a bitter taste and qualities similar to, but weaker than, quinine; -- sometimes called also cinchonidia.

One of the quinine group of alkaloids isomeric with and resembling cinchonidine; -- called also cinchonia.

A powerful alkaloid, C17H21NO4, obtained from the leaves of coca. It is a bitter, white, crystalline substance, and is remarkable for producing local insensibility to pain.

One of the opium alkaloids; a white crystalline substance, C18H21NO3, similar to and regarded as a derivative of morphine, but much feebler in its action; -- called also codeia.

A powerful vegetable alkaloid, C17H19NO5, extracted from the Colchicum autumnale, or meadow saffron, as a white or yellowish amorphous powder, with a harsh, bitter taste; -- called also colchicia.

onging to the pyridine series, and obtained from bone oil, coal tar, naphtha, and certain alkaloids.

A vegetable alkaloid found with conine in the poison hemlock (Conium maculatum). It is a white crystalline substance, C8H17NO, easily convertible into conine.

A powerful and very poisonous vegetable alkaloid found in the hemlock (Conium maculatum) and extracted as a colorless oil, C8H17N, of strong repulsive odor and acrid taste. It is regarded as a derivative of piperidine and likewise of one of the collidines. It occasions a gradual paralysis of the motor nerves. Called al…

A poisonous alkaloid extracted from corroval, and characterized by its immediate action in paralyzing the heart.

e decomposition of narcotine. It has weak basic properties, and is usually regarded as an alkaloid.

A supposed alkaloid obtained from croton oil by boiling it with water and magnesia, since found to be merely a magnesia soap of the oil. Watts.

A colorless crystalline alkaloid obtained in small quantities from opium.

A deadly alkaloid extracted from the curare poison and from the Strychnos toxifera. It is obtained in crystalline colorless salts.

A poisonous alkaloid extracted from the stavesacre (Delphinium staphisagria), as a colorless amorphous powder.

One of several isomeric organic bases of the quinoline series of alkaloids.

asurement of doses; specif., a system of therapeutics which uses but few remedies, mostly alkaloids, and gives them in doses fixed by certain rules. --Do`si*met"ric (#), a. --Do*sim"e*trist (#), n.

An alkaloid obtained from the leaves of an Australian tree (Duboisia myoporoides), and regarded as identical with hyoscyamine. It produces dilation of the pupil of the eye.