A Treatise on Domestic Economy; For the Use of Young Ladies at Home and at School

_Sub-carbonate_, an imperfect carbonate. _Sulphates_, _Sulphats_, _Sulphites_, salts formed by the combination of some base with sulphuric acid, as _Sulphate of copper_, (blue vitriol, or blue stone,) a combination of sulphuric acid with copper. _Sulphate of iron_, copperas, or green vitriol. _Sulphate of lime_, gypsum, or plaster of Paris. _Sulphate of magnesia_, Epsom salts. _Sulphate of potash_, a chemical salt, composed of sulphuric acid and potash. _Sulphate of soda_, Glauber's salts. _Sulphate of zinc_, white vitriol. _Sulphuret_, a combination of an alkaline earth or metal with sulphur as, _Sulphuret of iron_, a combination of iron and sulphur. _Sulphuric acid_, oil of vitriol, vitriolic acid. _Suture_, a sewing; the uniting of parts by stitching; the seam or joint which unites the flat bones of the skull, which are notched like the teeth of a saw, and the notches, being united together, present the appearance of a seam. _Tartar_, a substance, deposited on the inside of wine casks, consisting chiefly of tartaric acid and potash. _Cream of tartar_, the crude tartar separated from all its impurities, by being dissolved in water and then crystallized, when it becomes a perfectly white powder. _Tartaric acid_, a vegetable acid which exists in the grape. _Technology_, a description of the arts, considered generally, in their theory and practice, as connected with moral, political, and physical science. _Three great Jewish yearly festivals_, see _Festivals_. _Three-ply_, or triple ingrain, a kind of carpeting, in which the threads are woven in such a manner as to make three thicknesses of the cloth. _Tic douloureux_, a painful affection of the nerves, mostly those of the face. _Tocqueville_, (Alexis de,) a celebrated living statesman and writer of France, and author of volumes on the Political Condition, and the Penitentiaries, of the United States, and other works. _Trachea_, the windpipe, so named (from a Greek word signifying _rough_) from the roughness, or inequalities, of the cartilages of which it is formed. _Truckle-bed_, or _trundle-bed_, a bed that runs on wheels. _Tuber_, a solid, fleshy, roundish root, like the potato. _Tuberous_, thick and fleshy; composed of, or having, tubers. _Tucks_, (improperly tacks,) folds