Page:Geology and Mineralogy considered with reference to Natural Theology, 1837, volume 2.djvu/25

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It is unnecessary here to give detailed descriptions of the 28 divisions of the Stratified Rocks represented in our Section. Their usual Order of Succession and Names are expressed in their respective places, and detailed descriptions of their several characters may be found in all good Treatises on Geology.

The leading Groups of Formations are united by colours, marking their separation from the adjacent groups y and the same colours are repeated, in the headings above the figures of Plants and Animals that characterize the several series of Formations, to show the extent of the strata over which the Organic Remains of each Group are respectively distributed.

The Formation of Peat Bogs and Calcareous Tufa are of too local a nature to be included in the series of stratified Rocks represented in this Section; although they sometimes operate locally to a considerable extent, in adding permanent and solid matter to the surface of the Globe.