Amphioxus and the Ancestry, of the Vertebrates
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|Format: ||Paperback, 342 pages|
|Published In: ||United States, 27 September 2015|
Excerpt from Amphioxus and the Ancestry, of the Vertebrates This volume originated in a course of University lectures prepared at my suggestion by the author. It seemed important that he should bring within the reach of students and of specialists among other groups, his own extensive observations upon Amphioxus and other remote ancestors of the Vertebrates, as well as the general literature upon this group. While our detailed knowledge of the structure and habits of these animals has been rapidly increasing in recent years, it is still in the main very widely scattered in monographs and special papers. Probably no single group illustrates more beautifully the principles of transformism; for the Protochordates in their embryonic development exhibit remarkable reminiscences of past adaptations, and, in their adult development, the most varied present adaptations to pelagic, deep-sea, littoral, free-swimming, and sessile life. As Lankester has shown, the Ascidians alone give us a whole chapter in Darwinism. But degeneration and change of function constitute only one side of their history. 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.
22.86 x 15.24 x 1.8 centimetres (0.46 kg)|
15+ years |