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James Jardine FRSE FSAScot (13 November 1776–20 June 1858) was a Scottish civil engineer, mathematician and geologist. He was the first person to determine mean sea level. He built tunnels and bridges, including for the Innocent Railway, and built reservoirs including Glencorse, Threipmuir, Harlaw for Edinburgh Water Company, and Cobbinshaw for the Union Canal.
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