Excerpt from Radium, Vol. 16: A Monthly Journal Devoted to the Chemistry, Physics and Therapeutics of Radium and Radio-Active Substances; February, 1921 From the clinical side, both radium element and radium emana tion have their quota of supporters, some of whom claim specific vir tues for their favorite method. It is assumed that all accept as a basic fact the cardinal point that it makes no difference in the final result of every radium treatment, whether element or emanation is used, provided the duration of the period of radio-active units is the same during the exposure. 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.