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Excerpt from Spherical Astronomy Still I publish this translation with diffidence, as I am well aware of its imperfection, and as I fear that, not to speak of the want of that finish of style which might have been expected from an English Translator, there will be found now and then some Germanisms, which are always liable to occur in a translation, espe cially when made by a German. I have discovered some such mistakes myself and have given them in the Table of Errors. 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.