Zoological Lectures, Vol. 2

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Excerpt from Zoological Lectures, Vol. 2: Delivered at the Royal Institution in the Years 1806 and 1807 We are now arrived at a class or tribe of the animal kingdom highly remarkable both for singular external appearance and internal conformation. These animals differ from viviparous quadrupeds and from birds in the structure of those important organs the heart and lungs. The heart in these amphibious animals may be said to have but one ventricle or cavity, instead of two as in viviparous quadrupeds and birds. 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.