MAG Magnetism-continued. - - antithesis of magnetism and diamag- theories of magnetism, 137 effect of magnetic and diamagnetic couples, 147, 149 - deportment of magnetic bodies, 171 - letters, essays, and reviews relating to - connection of magnetism with heat, -on some mechanical effects of mag- apparatus devised for the pur- observations on the character of the Mr. Clerk Maxwell's theory, 280 Magneto crystallic force, Faraday's Magnus, M., his investigation of ther- mo-electric currents, 296 Marble, statuary, diamagnetic action - poles of a marble statue, 268 Faraday's letter to him on diamag- conditions proposed by him for the - his view of polarity, 202 ory of the Electro-magnetic field,' 280 -- examples which disobey the law, ,11 - failure of his hypothesis, 14, 47 - examination of his law that mag- - Faraday's verification of M. Plücker's Plücker's - his discovery of the optic axis force, - 49 - his experiment on the diamagnetic BY JOHN TYNDALL, LL.D. F.R.S. Professor of Natural Philosophy in the Royal NOTES OF A COURSE OF NINE LECTURES ON LIGHT; Delivered at the Royal Institution in April, May, and June 1869. Crown 8vo. price 1s., or bound in cloth, 1s. 6d. ON RADIATION; The Rede Lectures delivered before the University of Cambridge, May 1865. Crown 8vo. with Diagram, price 2s. 6d. 'Few men possess the remarkable faculty of making abstruse subjects connected with natural philosophy intelligible to ordinary untrained minds in the same high degree as the Author of this Lecture. It is an admirable exposition of the present state of our knowledge as regards radiation, and will be read with profit by all who desire to become acquainted with the subject.' MEDICAL TIMES and GAZETTE. FARADAY AS A DISCOVERER. New and Cheaper Edition, with Two Portraits. Fcp. 8vo. price 38. 6d. 'Professor TYNDALL'S Memoir of FARADAY as a discoverer is written in clear and vigorous English. FARADAY was a man of the loftiest aims, and was probably one of the greatest experimental philosophers the world has ever had. His character as a man of science, and the extent to which science is indebted to him, and the nature, method, and the precision of his discoveries-all these matters the reader will find well told in this volume.' The LANCET. This welcome little volume contains three portraits--Faraday the Philosopher, Faraday the Man, Faraday the Christian. The portraits are drawn with a firm and clear hand, in a gentle and loving spirit, under the guidance of a deep insight. Men of science who clustered round FARADAY'S home in Albemarle Street will be pleased that the portrait of their distinguished chief has been trusted to the hands of one of the most eminent among themselves, whom FARADAY selected as his assistant and successor. The members of the much wider circle whose lives were illuminated by the rays of truth which beamed on them from that luminous fane of science where young and old, ignorant and skilled, were through so many years equally charmed, elevated, and instructed, will be grateful that the character, the labours, and the teachings of their master are herein transmitted to them by a fellow-pupil who neither in admiration nor affection falls short of their own. They will all give Professor TYNDALL'S work a profound welcome.' MACMILLAN'S MAGAZINE. London: LONGMANS and CO. Paternoster Row. |