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Excerpt from Orr's Circle of the Sciences: A Series of Treatises on the Principles of Science, With Their Application to Practical Pursuits Daguene and Niepce's Discovery. - To the inventive genius of these gentle men we are indebted for the first practical application of this great discovery; but, like most great conceptions of the human mind, this art, as we have seen, advanced by slow, steps, and was indicated from time to time by the isolated facts {we have briey alluded to. 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.