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JOHN LOUDON MCADAM (1756-1836)

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Originally appearing in Volume V17, Page 190 of the 1911 Encyclopedia Britannica.
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JOHN LOUDON See also:MCADAM (1756-1836)  , Scottish inventor, who gave his name to the See also:system of road-making known as " macadamizing," was See also:born at See also:Ayr, See also:Scotland, on the 21st of See also:September 1756, being descended on his See also:father's See also:side from the See also:clan of the McGregors . While at school he constructed a See also:model road-See also:section . In 1770 he went to New See also:York, entering the counting-See also:house of a See also:merchant See also:uncle . He returned to Scotland with a considerable See also:fortune in 1783, and See also:purchased an See also:estate at Sauhrie, See also:Ayrshire . Among other public offices he held that of road trustee . The highways of See also:Great See also:Britain were at this See also:time in a very See also:bad See also:condition, and See also:McAdam at once began to consider how to effect reforms . At his own expense he began at Sauhrie, despite much opposition, a See also:series of experiments in road-making . In 1798 he removed to See also:Falmouth, where he had received a See also:government See also:appointment, and continued his experiments there . His See also:general conclusion was that roads should be constructed of broken See also:stone (see ROADS) . In 1815, having been appointed surveyor-general of the See also:Bristol roads, he was able to put his theories into practice . In 1819 he published a See also:Practical See also:Essay on the Scientific Repair and Preservation of Roads, followed, in 182o, by the See also:Present See also:State of Road-making . As the result of a See also:parliamentary inquiry in 1823 into the whole question of road-making, his views were adopted by the public authorities, and in 1827 he was appointed general surveyor of roads .

In pursuing his investigations he had travelled over See also:

thirty thousand See also:miles of road and expended over £5000 . See also:Parliament recouped him for his expenses and gave him a handsome gratuity, but he declined a proffered See also:knighthood . He died at Mofft, See also:Dumfries-See also:shire, on the 26th of See also:November 1836 .

End of Article: JOHN LOUDON MCADAM (1756-1836)
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