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Excerpt from A Monograph of Carboniferous and Permian Foraminifera: The Genus Fusulina Excepted A few words Of preface seem necessary by way of commentary on the title, - at any rate an author may claim an Opportunity at the very outset to explain the origin Of his work, to state its aim and limitations, and to acknowledge, in part at least, the services of those who have helped him in its preparation. The geographical extent of the geological formations, one minor phase of whose history the present memoir is intended to illustrate, forbids the idea of exhaustive treatment; but whatever approach to completeness it may possess, even within the present range of ascertained facts, is due to assistance proffered with no ordinary kindness from many different quarters. 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.