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Excerpt from The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, Vol. 27: January-June 1889 <p>Prof. S. P. Iangley on Energy and Vision Prof. J. A. Fleming's Design for a. Standard of Electrical Resistance. (plate I.) Mr. F. J. Smith on a Continuous Heat and electrical-current measuring-instrument Mr. O. Heaviside on the General Solution of Maxwell's Elec tromagnetic Equations in a Homogeneous Isotropic Medium, especially in regard to the Derivation of Special Solutions, and the Formula for Plane Waves Rev. T. Pelham Dale on the Upper Limit of Refraction in Selenium and Bromine Prof. J. V. Jones on the Calculation of the Coefficient of Mutual Induction of a Circle and a Coaxal Helix Capt. W. (10 W. Abney on the Measurement of the Lumi nosity and Intensity of Light reected from Coloured Dr. J. W. W. Vvaghorn on a Modification of the Ordinary Method of Determining Electromagnetic Capacity Mr. J. Parker on Thermoelectric Phenomena Proceedings of the Geological Society Mr. 1lt. Brown on the Permian Rocks of the Leicester shire Coal-field Mr. J. B. Tyrrell on the Superficial Geology of the Central Plateau of N orth-western Canada Mr. W. Whittaker on the Deep Boring at Streatham On the Excitation of Electricity by the Contact of Rarefied Gases with Galvanic Incandescent Wires, by J. Elster and H. Geibel On the Physical Properties of Thin Solid Lamina, by G. <p>About the Publisher <p>Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com <p>This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are i