Excerpt from Memoirs of the American Academy of Arts and Sciences, 1868, Vol. 10: Part I As it was at about the same altitude as the star, viz., 74° and to the east of the merid ian, it could not have been far from the mag netic pole of Dip. Shortly afterwards, the arch was broken up and the northern sky covered with pulsations of light. 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.