Excerpt from An Account of the Trigonometrical Survey, Carried on by Order of the Master-General of His Majesty's Ordnance, in the Years 1800, 1801, 1803, 1804, 1805, 1806, 1807, 1808, and 1809, Vol. 3 The first communication on the subject of this Survey was made to the Royal Society, and printed in their volume for In that account is given a detail of the whole of the opera tions previously performed for effectuating the initial parts of the Survey. These principally consisted of the measurements of the base lines on Hounslow Heath and Romney Marsh, join ing the triangles proceeding from the former, to those of the late Major General Roy, at F airlight Down, and intermediately at other stations, and measuring a base of verification on Salis bury Plain. 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.