Excerpt from Aetiology of TuberculosisThat the bacillus of Koch is the cause of tubercular disease, that to these are due all the different lesions of the various tissues in which it is found implanted and that it is then invariably present, though, perhaps at times, difficult to discover, to color, or to isolate, and that, unless it is there, tuber culosis does not exist - all this is proved beyond question or doubt in Koch's Etiology. The modes of development, the processes of the biological Studies which are required for the investigation, everything discoverable, in fact, connected with this bacillus, are minutely, carefully, and thoroughly described and presented by the author to the inquiring student. With this work properly appreciated and well studied, there is no longer any reason for error of diagnosis in that fatal affection. The lesions are in many instances so characteristic that any error can scarcely be possible, and yet how frequently may it happen that lesions, of the lungs, for instance, often Peculiar, may be of a tuberculous aspect and yet entirely different in their nature The pseudo-tubercules of the lungs, sometimes encountered, have no doubt in some instances led to a diagnosis of alleged phthisis, which Would have been of an entirely different nature had the teachings of the author been followed, and the truth discerned, which the absence of the bacilli would have made certain if it had but been rightly interpreted.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.