Ure's Dictionary of Arts, Manufactures, and Mines. Edited by Robert
Hunt, F.R.S. Three vols. (Longmans.)—The sixth edition of a standard work, carefully revised and brought down to the present state of scientific knowledge. It is impossible to read such a book through in order to criticize it, and when one has dipped at random into several of its pages, it is difficult to convey an exact idea of its merits. We' can only say that it is all it should be. The aceounts it gives of all matters connected with the useful arts, with manufactures generally, and the materials for both which lie hidden in the ground, are suffi- ciently full, and are accompanied by copious illustrative woodcuts. It must be invaluable to all who, like newspaper writers, want to know a little of a great many subjects, while some of its articles are so com- plete, and their writers are of such authority, that it will bo nearly as useful to those who want to know much of a few eubjeots.