Butterwort, or the Pin-guicula, L.; a genus containing six species, of which the most remarkable is the vulgaris, or common butterwort, or Yorkshire sa-nicle, growing on bogs, or low, moist grounds, in England and Scotland. Its leaves are covered with soft, upright, pellucid prickles, secreting a glutinous liquor; the blossoms violet, purple, and reddish, with white lips, and an ash-coloured, woolly spot on the palate : its flowers appear in May and June. Linnaeus informs as, that if the fresh gathered leaves of this plant be put into a strainer, through which the milk of the rein-deer is poured while warm, and set by for a day or two, to become acescent, it acquires such a degree of consistency and tenacity, that neither whey nor cream, separate. The inhabitants in the north of Sweden eat this coagulated milk, as a very grateful food. When the leaves have been once used, it is not necessary to have recourse to them again; for half a spoonful of the prepared milk, mixed with a fresh quantity of other milk, will always effect: the purpose: but Mr. Hawes, who tried this experiment with cow's milk, did not succeed.

The juice of the leaves of common butterwort kills lice in men and brutes; and likewise cures-chaps in cow's udders. Neither sheep, cows, horses, goats, nor swine, will feed upon the plant; though it is erroneously believed that it occasions the rot in sheep.

External applications of the root, are, according to Bechstein, a good vulnerary ; and, if credit be due to him, decoctions made of the whole plant, tend to restore the hair to a bald head.