In 800, with Plates, Sec. 7s 6d. Number XLI.The QUARTERLY JOURNAL of SCIENCE and the ARTS, edited at the Royal Institution of Great Britain.Contents:—I. Account of the National Military School of the United States of America.—II. On the Naturalization of Fishes. By J. Mac Culloch, M.D. FJELS. —III. On Pure Caoutchouc, and the Substances by which it is accompanied in the State of Sap or Juice. By M. Faraday, F.R.S. Cor. Mem. Inst, of France.—IV. An Examination of the Differences in Chemical Composition between Cotton-Wool, Cotton-Cloth, and Turkey-red Calicoes. By Andrew Ure, M.D. F.R.S. c.—V. Account of the Improvements which have been made in England on*the Reflecting Microscope of Professor Amici, of l^fodena. By C. R, Goring,.,M.D« with a Plate. —VI. Outlines of Geology, being the Substance of a Course of Lectures on that Subject, delivered in the Amphitheatre of the Royal Institution of Great Britain. By William Thomas Brande, FwR.S. Professor of Chemistry in the Royal Institution, c. —VII. On the Air contained in River and Canal-Water. By Andrew Ure, M.D. F.R.S. c.—VIII. Improvements in,*the Solution of Equations by continued Fractions. By W. G. Horner, Esq.—IX. On the Difference in the Length of the Human Fingers. By Thomas M*Keevor, M.D.—X. On the Oscillations of the Barometer. By J. F. Daniell, F.R.S. (with Three Plates).—XI. On the Measurement of an Arc of the Meridian at Spitzbergen. By Captain Edward Sabine, of the Royal Artillery, F.RJ5. (with a Chart).—XII. Proceedings of the Royal Institution. —XIII. Astronomical and Nautical Collections,—XIV. Miscellaneous Intelligence iri Mechanics, Chemistry, and Natural History.—XV. Meteorological Diary.XXXIV.Price c2s.