James Hutton MD ( Edinburgh , ( 14 June 1726 - 26 March 1797 ) was a Scottish geologist , physician , naturalist , chemist and experimental farmer . James Hutton MD ( Edinburgh , 3 June 1726 OS ( 14 June 1726 NS ) - 26 March 1797 ) was a Scottish geologist , physician , naturalist , chemist and experimental farmer .