Heliographic Positions of Sun-Spots

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Excerpt from Heliographic Positions of Sun-Spots: Observed at Hamilton College, From 1860 to 1870A small table of double entry, with the arguments s and p, gives AS directly. For the apparatus here D and on the average G= 19° The diameter of the solar image measures somewhat over ten inches on the paper.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.