Opis: Gazetteer of the State of New York - French J. H.

Excerpt from Gazetteer of the State of New York: Embracing a Comprehensive View of the Geography, Geology, and General History of the State and a Complete History and Description of Every County, City, Town, Village, and Locality With Full Tables of Statistics

The map of Westchester County which was commenced about ten years since, and soon after published by Robert Pearsall Smith, was probably the first map of any county in the State of New York published from actual survey of roads and boundaries. This was followed by maps of other counties on a similar plan; and, about eight years since, Mr. Smith conceived the idea of publishing a series of maps from actual survey, embracing all the counties in the State, and, from these, of producing a State Map that should be more full, complete, and reliable than any ever before published. But, about four years since, upon careful trial, in reducing a large number of these county maps to a uniform scale, so many omissions and discrepancies were found in them, that a new survey of the State was deemed necessary to the construction of an accurate map of the State. An arrangement was accordingly made with the author to take the general superintendence of the new survey; the general plan for the works to be prepared was fixed upon; and the re-survey of the State and the collection of statistics were begun.

At the commencement of the re-survey, maps of fifty-one counties had been completed and published; six counties had been surveyed, but the maps were not yet published; and three counties were still unsurveyed. Of the fifty-one published maps, twelve were found to be so deficient in matters essential to the completion of the State Map according to the plan fixed upon, as to render entire new surveys of these counties necessary. Surveyors were sent into the remaining counties, with copies of the published or manuscript maps in hand, with instructions to visit every town, to correct every error that should be found upon the maps, to make additions of new roads, note changes in boundaries, and, in short, to return the maps properly revised and corrected for use in the preparation of the State Map. In many instances new surveys of parts of towns, town lines, roads, and streams were found necessary, and also countless changes in the location of boundary lines, roads, streams and bodies of water, and in the representation of the topographical features of the country. The surveyors were instructed to obtain copies of manuscript and other local maps, as far as practicable, as these were generally found to contain metes and bounds, and, being plotted to large scales, were of value in laying down boundary lines. Draftsmen were also sent to the several private Land Offices in the State, and to Albany, and all maps of any value in the offices of the State Engineer and Surveyor and the Secretary of State were copied, to be laid under contribution in the preparation of the State Map. The Superintendent of the United States Coast Survey and the Secretary of the Interior also furnished copies of all the maps in their Departments pertaining to the State. The number and variety of maps and plots, printed and manuscript, that have thus been collected is very great, and probably embraces more valuable matter than any similar collection in the State.

Not the least difficult part of the labor of constructing a map of a large extent of country is "making the projection." In surveys of small areas this difficulty does not occur, as the proportion of the curvature of the earth's surface to that part of its area contained in a rectangle of thirty to fifty miles, is so small that, when reduced to the scale of even an inch to the mile, it is scarcely perceptible. But in projecting a map of territory of as great extent as the State of New York, the curvature of the surface from a plane is so great as to make the departure of the lines of latitude and longitude from right lines plainly visible upo

Szczegóły: Gazetteer of the State of New York - French J. H.

Nazwa: Gazetteer of the State of New York Embracing a Comprehensive View of the Geography, Geology, and General History of the State and a Complete History and Description of Every County, City, Town, Village, and Locality With Full Tables of Statistics
Autor: French J. H.
Wydawnictwo: FB &c Ltd
Kod paskowy: 9781332014224
Języki: angielski
Ilość stron: 792
Format: 15.2x22.9cm
Oprawa: Miękka

Recenzje: Gazetteer of the State of New York - French J. H.