Excerpt from Studies in Microscopical Science, Vol. 1: With Fifty-Three Lithographed PlatesCartilage forms the enti re permanent skeleton of many of the higher animals whilst in others it constitutes a varying proportion of that structure, which ultimately in the highest vertebrates persists only in such situations as the articular ends of the bones between the ribs and sternum, the walls of the trachea and bronchi, the larynx, the interverte bral discs, sacro-iliac synchondrosis, symphysis pubis, interarticular situations, glenoid and cotyloid ligaments, the grooves for tendons, the ear, and in all parts where a decidedly firm yet less yielding structure than bone is required. In all other parts it becomes eventually replaced by bone, and in certain pathological conditions (enchondromata) invades other parts of the body.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.