The Terms “Cast” and “Mould” in Palaeontology

Extract

In preparing a course of lectures in elementary Palaeontology, the present writer found himself to be vague as to the general terminology of the most elementary part of his subject—the forms of preservation in which fossils occur. To his surprise he found, on referring to the leading text-books, that there was no such general terminology; at least, not in the sense of a terminology in general use.