Excerpt from A Manual of Practical Medical Electricity: The Roentgen Rays and Finsen Light The whole of the first and second editions of this work being out of print, my publishers have requested me to prepare a third edition, and I do this all the more willingly because of the great advance which has recently been made in the treatment of disease by the Rontgen rays and 'finsen light. Several new chapters dzaling with this important subject have been added, and the nature, pro duction, and use of the Finsen or ultra - violet light has been considered at some length. The earlier portions of the book have been carefully revised and brought up to date the apparatus for use with the mains and the charging of accumulators in private houses has received more attention; new matter has been added to the chapter on electrolysis; the electrical resistance of the blood isv considered in the Chapter on electro - diagnosis. I am again indebted to Dr. R. Milne Murray for some remarks upon the Apostoli treatment, and to Mr. David Wallace, Ed., for revising and rewriting the chapter on the cystoscope. I also wish to acknowledge the assistance I have had from Dr. Hope Fowler, assistant physician in the electrical department, in the treatment of many of the cases, and in preparing them for publication. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com 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 intentionally left to preserve the state of such historical works.