Keywords: Theory of the Earth Hutton Plate 1.JPG Theory of the Earth Cover Plate I EXPLANATION of PLATE I THEORY of the EARTH FIG I Section of an iron-stone septarium cut horizontally as it lies in its bed FIG 2 Another septarium cut both horizontally and perpendicularly FIG 3 Part of a septarium the divisions of which are more in straight lines All these three are of the same dimensions with the specimens FIG 4 Part of Fig 3 representing the portion included within a b c d which is magnified in order to show the crystallised cavity of the speta http //books google es/books id 1bmiLkX5pPkC printsec frontcover hl es v onepage q f false 1795 James Hutton PD-old-100 Theory of the Earth Ironstone |