Excerpt from Zoology the Study of Animal Life The word zoology is derived from the Greek word zeon, which meant animal, and from the termination - logia, which signified a discourse. The name therefore, as might be ex pected, denotes the science of animals, and is therefore narrower in its scope than the science of biology, which deals with everything living and of which the science of zoology forms a subdivision. We see, therefore, that at the outset we are faced with two fundamental questions, viz. (1) What is life? And (2) What is an animal? To no two questions is it more difficult to give a precise answer than to these. If with Herbert Spencer we define life as the continuous adjustment of internal to external relations, who is the wiser, or who has any better conception of life as a result of the definition? 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.