Excerpt from The Physical Review, Vol. 35: A Journal of Experimental and Theoretical Physics Conducted With the Co-Operation of the American Physical Society N our former paper' we described some experiments performed on a Lecher system using a paalzow-rubens bolometer. The present paper is a continuation of that work but instead of a bolometer a thermal couple was employed. This has the advantage over the bolometer of greater constancy, because it is not dependent upon any auxiliary battery circuit. Its introduction led to some rather interesting results as will be seen further along in this paper. 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.