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Ancient Romans the best roadmakersTheir principle
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acre advantage agricultural amount attention average axle boiler Boydell's broken stones canals carried carts Charles Dance coal common roads consequence constructed conveyance cost cylinders diameter distance drawing drawn driving wheel economy employed endless railway engine and train evident expense feet friction give gradient ground heavy hill horse power House of Commons improvements inches inclination injury journey labour laid land less Liverpool load locomotive London M'Adam machine Manchester ment Messrs miles an hour miles per hour minutes obtained passed passengers patented ploughing practical present principle Proby Cautley profitable propelled purpose rail railroads remarks repairs shoe speed stage coach steam car steam carriages steam coaches steam engine steam on common steam power steam traction stoppages stopped surface tion tolls tons traction engine traffic travelling trip turnpike roads turnpike trusts waggons weight whilst