Publisher's Synopsis
Excerpt from American Edition of the British Encyclopedia or Dictionary of Arts and Sciences, Vol. 4: Comprising an Accurate and Popular View of the Present Improved State of Human Knowledge
Aperture, called, in familiar language. The mouth of the shell, . Is the entrance to the chamber in which the animal resides, and is applicable to the openings of uni valve and multivalve shells. The aper ture is either entirely open, or closed by the operculum attached to the body of the animal, when the animal retires into its dwelling. This aperture variesin form in different shells, being angular, round cd, semilunar, linear, or otherwise, and sometimes appears double, the inner margin being surrounded by an exterior one. 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.
