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Excerpt from Asiatic Researches, Vol. 9: Or Transactions of the Society Instituted in Bengal, for Inquiring Into the History and Antiquities, the Arts, Sciences, and Literature, of Asia, 1809 Notwithstanding the various theories which have been advanced, at different times, to account for the effects. Of refraction*; and the. Numerous ex periments which have been made by the most eminent philosophers of our times, with a view to discov ci some law by which its effects might be reduced to certain narrow limits, applicable to practice, nothing sufficiently satisfactory has yet occurred to set the question finally to rest. 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.