LONDON, EDINBURGH, AND DUBLIN PHILOSOPHICAL MAGAZINE AND JOURNAL OF SCIENCE. CONDUCTED BY SIR ROBERT KANE, LL.D. F.R.S. M.R.I.A. F.C.S. AND WILLIAM FRANCIS, PH.D. F.L.S. F.R.A.S. F.C.S. “Nec aranearum sane textus ideo melior quia ex se fila gignunt, nec noster VOL. XLIX.-FOURTH SERIES. JANUARY-JUNE 1875. LONDON. TAYLOR AND FRANCIS, RED LION COURT, FLEET STREET, Printers and Publishers to the University of London ; YORK: AND ASHER AND CO., BERLIN. Meditationis est perscrutari occulta; contemplationis est admirari perspicua ..... Admiratio generat quæstionem, quæstio investigationem, investigatio inventionem.”—Hugo de S. Victore. -“Cur spirent venti, cur terra dehiscat, J. B. Pinelli ad Mazonium. CONTENTS OF VOL. XLIX. Page Mr. F. Guthrie on Salt Solutions and Attached Water Dr. E. J. Mills on Aniline Derivatives Mr. P. Smyth on Carbon and Hydrocarbon in the Modern Spec- troscope. (With Two Plates.) .... Mr. F. Galton on Statistics by Intercomparison, with Remarks on the Law of Frequency of Error Prof. A. M. Mayer on a new Method of investigating the Composite Nature of the Electric Discharge M. J.-L. Soret on Polarization by Diffusion of Light Prof. A. S. Herschel on the Spectrum of the Aurora Notices respecting New Books :- Dr. W. Spottiswoode on the Polarization of Light 72 Proceedings of the Geological Society :- Prof. A. C. Ramsay on the Physical History of the Valley Mr. W. Topley on Upheaval and the Thickening of Mr. G. Maw's Geological Notes on a Journey from Algiers Mr. T. Davidson and Prof. W. King on the Trimerellidæ. 76 On the Permanent Ice in a Mine in the Rocky Mountains, by On the Mixture of Colours in Binocular Vision, by W. von Experimental Studies on the Electrical Resistance of Metals and its Variation under the Influence of Temperature, by On the Conservation and the Properties of a Plate of Palladium |
