James Hutton (1788*). “Theory of the earth; or an investigation of the laws observable in the composition, dissolution and restoration of land upon the globe. (From. the Trans., Roy. soc. of Edinb.).”, p.86
James Hutton (1788*). “Theory of the earth; or an investigation of the laws observable in the composition, dissolution and restoration of land upon the globe. (From. the Trans., Roy. soc. of Edinb.).”, p.65