Ferriage

[See FERRY.] The fare to be paid for conveyance in a boat, over a river, strait, or other water. Fer'ric, a. [Fr. férrique; Lat. ferrum, iron.] Pertaining to, or extracted from, iron; as, ferric acid. Ferric Acid, n. [Lat. ferrum, iron.] ( Chem.) An unstable teroxide of iron known only in combination with bases as ferrates. If one part of sesquioxide of iron and 4 of dry nitre be fused together for an hour in a covered crucible, a brown ma is obtained, giving a violet-colored solution, containing ferrate of potash. Solutions of the ferrates of the earths may be formed by mixing ferrate of potash with solutions of their salts. F. A. has never been obtained in a free state. Form. FeH204