Electricity and Magnetism #261795

HE object of the following pages is to present an easy and attractive introduction to the sciences of Electricity and Magnetism. The work is not intended as a text-book; hence no recondite calculations, and no mere enumeration of all the existing electro-magnetic appliances are introduced. Care has been taken to im part exact knowledge, that will not have to be unlearnt, in a readable form. The two old theories are sufiiciently dwelt upon to enable the reader to form an intelligent conception of them, while very special stress has been laid upon the modern, and more satisfactory, mole cular theory. Many instruments are described and figured; very many more are left entirely unnoticed, such as the accumulator, etc., since these can be per fectly understood from a perusal of this work, after re ference to more technical works written by the Author. Enough, however, has been done, without increasing the dimensions of the work beyond the limits prescribed, to.