Geology: a long section through mountains, and a volcano, showing strata, and, above, classes of animals. Coloured engraving by J. Fisher after T. Webster and F. Buckland.

Licence: Public Domain Mark

Credit: Geology: a long section through mountains, and a volcano, showing strata, and, above, classes of animals. Coloured engraving by J. Fisher after T. Webster and F. Buckland. Wellcome Collection. Source: Wellcome Collection.