Geology and mineralogy considered with reference to natural theology /

EXPLANATION OF PLATE 1. and to one another, more intelligibly than I have ever seen expressed elsewhere. This original drawing by Mr. Webster has formed the basis of the present enlarged and improved section, into which many important additions have been introduced by the joint suggestions of Mr. Webster and myself. The selection and arrangement of the animals and plants is my own ; they have been drawn and engraved (together with a large proportion of the woodcuts) by Mr. J. Fisher, of St. Clements, Oxford. For facility of reference, I have numbered the princi- pal groups of stratified rocks represented in the section, according to their most usual order of succession; and I have designated by letters the crystalline or unstratified rocks, and the injected masses and dykes, as well as the metallic veins, and lines of fracture, producing dislocations or faults. The crowded condition in which all the Pheno- mena represented in this section, are set together, does not admit of the use of accurate relative proportions, between the stratified rocks and the intruded masses, veins, and dykes by which they are intersected. The adoption of false proportions is, however, unavoidable in these cases, because the veins and dykes would be invisible, unless expressed on a highly exaggerated scale. The scale of height throughout the whole section is also infinitely greater than that of breadth. The plants and animals also are figured on no uniform scale.