Survey of Hudson River

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Excerpt from Survey of Hudson River: Letter From the Secretary of War, Transmitting Report of Colonel of Corps of Topographical Engineers, Relative to the Examination and Survey of the Hudson River, &C, The temporary advantage which had been derived from the execution of a similar plan in Scotland, was the probable cause of its application to the Hudson.About the year 1768, Mr. John Golborne, an eminent civil engineer, was employed by the city of Glasgow to devise a plan for the purpose of deepening the river to Greenock, 24 miles below the city, which he sub sequently effected by means of jetties projecting from the river-shore at right angles to the banks, on either side, and placed at short distances from each other along the whole course of the navigation. These jetties were not intended as the ultimate, means of improvement, but only as auxiliary thereto, by collecting the earth and gravel brought down by successive ¿oods, which thus furnished a considerable portion of the materials for the final constructions, free of the expense of carriage. Be sides this, persons were employed to drag or dredge out the channel, and to place the matter thus removed behind the projecting piers. By this process, the river was contracted to nearly the half of its original Width, aird an increase of about four feet in depth was the consequence. Re cently, the improvements on the Clyde have been completed by connect ing together the outer extremities of the jetties with longitudinal dikes, thus creating a very nearly uniform width to the river, and producing a near approximation to a uniform slope of the bed, by means of dredging.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.