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XX. An account of the trigonometrical survey, carried on in the years 1797, 1798, and 1799, by order of Marquis Cornwallis, Master-General of the Ordnance

1800/12/31 by William Mudge · 1 citation
Engineering · Social Sciences · #Art #Computer science #Engineering #Geology #Historical Geography and Cartography #History #Literature #Narrative #Order (exchange) #Parallels #Philosophy #Section (typography) #Subject (documents)

paper · pdf · doi:10.1098/rstl.1800.0021

openalex publication_date 1800/12/31 · openalex created_date 2016/06/24 · openalex updated_date 2026/05/21

Abstract

Having interspersed in the following Paper, with as much attention to brevity as the subject admits, every intelligence relating to the Trigonometrical Survey, I think it unnecessary to swell the bulk of the communication, by giving a long prefatory account of its progress since the year 1796. The contents of the work now meeting the public eye, are important and numerous: I have divided it into sections. The first contains the calculations of the sides of the principal and secondary triangles extended over the country in 1797, 1798, and 1799; together with an account of the measurement of a new base line on Sedgemoor, and a short historical narrative of each yearʼs operation. The second section contains the computed latitudes and longitudes of those places, on the western coast, intersected in 1795 and 1796, and also such others, since de­termined, as lie conveniently situated to the newly-observed meridians. This section also contains the directions of those meridians; one on Black Down, in Dorsetshire; another on Butterton Hill, in Devonshire; and another on St. Agnes Beacon, in Cornwall. Among the contents are likewise to be numbered the bearings, distances, &c. of the stations and intersected objects, from the parallels and meridians.

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