Gịnị ka James Hutton dere mgbe afọ 1785 gasịrị? N'iburu ajụjụ nke mbụ n'uche, dee ihe gbara ya gburugburu bụ́ nke ga-enye azịza ya. Ọ nwere ike ịbụ 1 - 20 ahịrịokwu. Ihe ndị gbara ya gburugburu:
A na-elekarị James Hutton anya dị ka ọkà mmụta ala nke oge a nke mbụ. N'afọ 1785, o nyere Royal Society nke Edinburgh akwụkwọ isiokwu ya bụ Theory of the Earth. N'akwụkwọ ya ahụ, ọ kọwara echiche ya bụ́ na ọ ghaghị ịbụ na ụwa emewo agadi nke ukwuu karịa ka e cheburu na mbụ iji nye ohere zuru ezu maka ugwu iji kpọnwụọ nakwa maka ihe ndị na-akpụ akpụ iji kpụọ nkume ọhụrụ n'ala oké osimiri, bụ́kwa ndị a kpọlitere iji ghọọ ala akọrọ. Hutton bipụtara mpịakọta abụọ nke echiche ya na 1795 (Vol. 1, Mpịakọta 2).