The artist, Mr. Smit, notwithstanding the novelty of the subject and the difficulties of the task, has thrown himself heartily into the work of making the twenty-four restorations of extinct animals. To him, also, the author is greatly indebted, and considers himself fortunate in having secured the services of so excellent an artist.

To the publishers his thanks are due for their liberality in the matter of illustrations, and the readiness with which they have responded to suggestions.

With regard to minor illustrations the following acknowledgments are due:—

To the Palæontological Society of Great Britain for permission to reproduce three of the illustrations in Sir Richard Owen’s great work, British Fossil Reptiles, published in their yearly volumes, viz. Figs. [3], [4], and [8].

To Messrs. Bell and Co. for the following cuts from the late Dr. Gideon A. Mantell’s works: viz. Figs. [12], [14], [20], [33], [37], [38].

To Messrs. A. and C. Black for the following cuts from Owen’s Palæontology: viz. Figs. [51], [54], [56], [57].


[Appendix IV.] contains a list of some of the works of which the writer has made use; but it would be impossible within reasonable limits to enumerate all the separate papers which have necessarily been consulted. The reader will find numerous references, such as “Case Y on Plan,” in brackets; these refer to the plan given at the end of the excellent little Guide to the Exhibition Galleries in the Department of Geology and Palæontology in the Natural History Museum, Cromwell Road (price one shilling), which visitors to the Museum are advised to obtain.