Produced by Bryan Ness, Stephen Blundell and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from scans of public domain works at the University of Michigan's Making of America collection.) A NEWLY DISCOVERED SYSTEM OF ELECTRICAL MEDICATION. BY DANIEL CLARK, A. M. CINCINNATI: PRINTED BY HITCHCOCK AND WALDEN, FOR THE AUTHOR. 1875. Entered, according to Act of Congress, in the year 1869, by DANIEL CLARK, A. M., In the Clerk's Office of the District Court of the United States for the Northern District of Illinois. Transcriber's Note: Minor typographical errors have been corrected without note. Medical, scientific, archaic and variant spellings remain as printed, except for obvious errors noted at the end of the text. PREFACE. In the summer of 1866, the author of this little book, moved by the repeated and earnest solicitation of his Medical Classes, prepared and printed a small pamphlet entitled _Practical Principles of Medical Electricity_, designed more particularly, as the present work also is, as a _Hand-Book_ to assist the memory of those who have taken a regular course of LECTURES from himself, or from some other competent instructor in the same general system of Practice. The edition of that work was exhausted somewhat more than a year ago. Still, the book has continued to be frequently called for. The author has, therefore, prepared, and now offers to the Profession, the present volume, comprising the substance of the previous work--corrected, improved in arrangement and form, and about doubled in size by the introduction of new matter. While he has reason for gratitude that the former manual, referred to above, has met with so favorable a reception, he can not but hope that the present work will be found even more acceptable and valuable to both practitioners and their patients. It is but justice to say that the most essential principles of _practice_ here presented did not originate with the present author, but with PROF. C. H. BOLLES, of Philadelphia, their discoverer, from whom the writer received his first introduction to them. Yet, the _explanations_ here given of the Law of Polarization, as respects the electric current in the circuit of the artificial machine, as well as respecting the natural magnets and magnetic currents of the human organism; the introduction of the _long cord_, with the explanation of its advantages; and also nearly everything of the _philosophic theories_ here brought to view, the author alone is responsible for.