Avens, or Geum, L. a genus of plants comprehending eleven species, of which, however, only two are natives of Britain, viz.

1. Common Avens ; the Geum urranum, L. (also called great; flowered Areas, or Herb Bennet); grows in woods, and about shaciy hedges ; produces yellow flowers from May to August, and is represented by WITHERING, 477. The stalks of this plant attain a height of two feet, In spring, its woody root possesses the aromatic flavour of cloves.

In medicine, the root of the common avens has lately been employed with singular efficacy in the cure of obstinate agues. A tincture made of it, in the proportion of four ounces of the root, digested with a quart of brandy, in a sand heat, and given to the quantity of half an ounce, or more, two, three or four times, has seldom failed to cure intermittent, where the Peruvian bark had proved ineffectual. Others give it with equal success in decoction, powder, or tuarjr, in doses from one scruple to a drachm or more, several times a day—provided that the first passages be previously evacuated by proper laxatives. This root has also afforded an excellent remedy in several chronic disorders, as a general strengthener and astringent: indeed, the experiments made by Buchhave sheW, that its antlse power is superior to that of the best foreign b3rk.

As an object of rural and domestic economy, this plant deserves some attention. Sheep are extremely fond of its herbage ; which may likewise, when young, be used for culinary purposes, and especially in the form of salad. If the common avens-root be collected, split, and dried, a portion of it secured in a bag, and hung in a cask of beer, it is affirmed (in the Transactions of the Swedish Academy), that this simple expedient will prevent it from turning sour. —On this subject, we refer to the article Brewing.

In the useful arts, this root has likewise tyeen employed in the process of tanning leather. Dam-bourney informs us, that the stalks and leaves of the plant have been used with advantage for dyeing wool of a permanent olive-hrown colour, when nreviously steeped in a solution of bismuth.

2. WATER AVENS, Geum rivale, L. grows in the North of England, . and, Wales, etc. in meadows and groves of a humid soil; its pale red flowers appear in June and July. We find it delineated in Engl. Sot. t. loo, and , -'8.—The herb and root of : ries, though of also been d in medicine, as well as OIS is the name of the v. adopted for the larger or coarser commodities, such as groceries, hops, cheese, wool, lead,

It is distinguished from Troy, which was formerly used in England for every purpose, and retained for weighing gold, silver, and jewels, for compounding me- for experiments in natural philosophy, and for com-ights with each other. The former contains six-ihe latter only twelve to the pound.—Bakers, who live in country places, manu-facturere their bread by avoirdupois-weight, but those who carry on business in corporation-towns, an; obliged to make it by troy-weight. caries purchase their drugs, if wholesale, by the former, but ret., the latter.—