a river of Asia, which has its source near that of the Euphrates in the mountain Tchirdir in Turkomania; afterwards it separates Diarbeck from Erzerum, and Kufislan from Irac-Arabia; and uniting with the Euphrates at Gorno, it falls into the gulf of Bafflorah, under the name of Schat el-Arab. This river passes by Diarbekar, Gezira, Mouful, Bagdad, Gorno, and Bafflorah.

TILLIA, Lime or Linden-tree, in botany: A genus of plants belonging to the class of polyandria, and order of monogynia; and in the natural system ranging under the Co-luniflora. The calyx is quinquepartite; the corolla pentapetalous; the berry is dry, globose, quinquilocular, quinqueloculare, opening at the base. There are four species; the europaea and americana, pubescens and alba.

The europaea, or common lime-tree, is generally supposed to be a native of Britain; but we are informed by Mr Pennant (on what authority is not mentioned), that it was imported into England before the land, vol. ii. year 1652.

The leaves are heart-shaped, with the apex produced, and ferrated on the edges; the flowers grow in a thin umbel, from three to nine together, of a whitish colour and a fragrant smell; very grateful to bees. The wood is light, smooth, and of a spongy texture, used for making lasts and tables for shoemakers, &c. Ropes and bandages are made of the bark, and mats and rustic garments of the inner rind, in Carniola and some other countries.—The lime-tree contains a gummy juice, which being repeatedly boiled and clarified produces a substance like sugar.