Maxwell's Electro-Magnetic Theories¹

Abstract

AN account of Maxwell's electric theories from the pen of Prof. Poincaré could not but be full of interest. The volume before us is the first of two on the views and conclusions set forth in the “Electricity and Magnetism” regarding electro-static and electro-magnetic action, and their verification by Hertz and others; and we must of course wait for the completion of the work before we can form any adequate idea of its scope and character, and fully understand the results of the critical analysis which it contains. But in spite of the fact that the treatise is in the somewhat disadvantageous form of an edited course of lectures, it is a contribution of great value to the literature of the subject. Whether or not it is possible always to agree with the physical views expressed regarding matters which are not yet outside the region of speculation, it is impossible not to admire its style and methods. Here are to be found exemplified that order and harmony which render the work of the best French mathematical writers so exquisitely clear, and that artistic charm which is so seldom seen in the writings of scientific men of other nationalities. It has been remarked by competent critics that Maxwell's work, though essentially that of an artist and man of genius, is obscured here and there by a certain vagueness and want of logical coherence and completeness, which has tried the patience and strength of many a devoted disciple. This was of course to a great extent inevitable. He sought out new fields of speculation for himself, and his greatest and most successful generalizations were, one cannot help feeling, the results rather of unerring intuition than of any completely systematic process of reasoning. Those who follow in his footsteps therefore are glad of the help of any friendly guide who is able by his experience and strength to point out the dangers and diminish the difficulties which attend their progress.