For the present we will content ourselves with these conclusions:
1st. That woorara acts upon animals in the same manner as venom.
2nd. That its harmlessness, when injected into the intestinal { 82} canal, cannot be explained by any change which the poisonous principle undergoes, but rather by a special property of the gastro-intestinal mucous membrane which resists its absorption.—_Journal de Pharmacie et Chimie._
Sumbul, the name and therapeutical properties of which are almost unknown to French physicians, appears to have been employed in India from a very remote period. Pietro Della Valle, who travelled through the different countries of Asia, in 1623, 1624 and 1625, mentions that sumbul is a root, and not a stem, although the Arabic word, sumbul, he observes, refers to the whole plant. It appears that the word sumbul is applied in India to a plant and portions of a plant, used as a perfume, as an incense in religious ceremonies, and again, as a medicinal substance. Sir William Jones thought that the true sumbul was a species of valerian, known both to the Hindoos and Brahmins, under the name of yatamansi. But, according to M. Granville, it appears to be an aquatic umbelliferous plant, found in the neighborhood of rivers.
It is erroneously asserted that it grows in Hindostan. It is not found in any part of the Indian territory, occupied by the English. The plant grows in Bootan and the mountains of Nepaul; and although large quantities of the dried plant have been exported, no botanist has yet been able to describe its characteristics from a living specimen. It is said that the native laws forbid the exportation of a living plant, without an order from the sovereign.
Sumbul has been described as a mass of roots and leaves of a greenish color, crumpled and pressed one against the other. This is an error, and arises from the fact of some having been first shown at St. Petersburg, which had been mixed with a { 83} strong decoction of this substance of a greenish color. Sumbul appears, on the contrary, under the form of a root, thick, homogeneous, of two, three, and even four inches in diameter, cut in pieces of an inch to an inch and a half long, and whose section presents a fibrous aspect, and a white and yellowish tint. It is brought from the centre of Asia, to Moscow, via Kiatcha. In all the good specimens of sumbul, the epidermis, or external covering, is of a dark shade, approaching to brown; if the color be strongly marked, it indicates that the plant was old. The epidermis is very thin, and much wrinkled. The interior substance is composed of thick, irregular fibres, which may be separated from one another, after the outer covering is detached, and which indicate a porous structure, common to aquatic plants. If, after taking off the outer covering, we make a transverse cut, we shall perceive an external layer, white and marbled, and an internal layer, thicker and yellowish. With a powerful lens we can distinguish transparent points, which look like grains of fecula.