Excerpt from Diseases of the Heart The polygraph tracings are, with one exception, from my own collection. This I have done purposely, even in cases where more perfect examples might have been obtained else where, ih order to show the frequency with which disturbances of cardiac function occur in the ward work of a general hospital, and the possibility of recording them in a busy clinique. Several of them were obtained - unaided - by my residents. 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.