Excerpt from The Great International Fisheries Exhibition: Crustaceans The Crustaceans are a large class of articulated animals whose distinguishing feature to the mere outside observer is that they are covered over the whole of their bodies and legs by a shell of more or less hardness, and it is this total covering in a coat of mail which mainly sets them apart from other classes of animals. They are found on the land, in the fresh water, and in the salt water and, amongst themselves, are divided into two distinct varieties, ie., the Sessile-eyed crustacean, in which the eye lies flat in its socket, with just the amount of mobility and scope of vision which the eyes of most animals have and the stalk-eyed crustaceans, in which the animal has a certain limited power of projecting its eye, at its own will, beyond its socket or immediate surroundings, and so obtaining a considerably enlarged sphere of vision. With the single exception of the common river cray fish I shall confine myself to - day to the crustaceans whose home is in the sea. 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.