Excerpt from Cyclopaedia of the Practice of Medicine, Vol. 1 Speech. SO too, again, it is not every endemic or epidemic dis ease that is necessarily an infectious disease; there can, for instance, be an ordinary poison that appears frequently in certain localities and occasions endemic intoxication; and it is also possible that certain conditions of the atmosphere, or other causes, may produce epidemic disease, in which infection plays no part at all. 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.