Excerpt from The Principal Forms of the Skeleton and of the Teeth Such are some of the instances of the structure and uses of the dermoskeleton in the vertebrate province. The 'development of this system of the skeleton is not dependent on the grade of organization, for we find it in the highest and in the lowest classes; nor does a great amount of osseous matter in the skin necessarily involve a small amount or absence of the same matter in the deeper-seated skeleton; for all the parts of this system of bones, a, c, d, m, m, are as well developed and as well ossified in the armadillos as in the quadrupeds which are covered by hair. The different states of the neuroskeleton in the sturgeon and armadillo are explicable only with reference to the different media and other conditions under which the two vertebrates were destined to exist. 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.