LIST OF ILLUSTRATIONS 



Portrait of the Author .... Frontispiece 



Fig. page 



1. A number of bones of extinct animals embedded in 



rock, from Pikermi near Athens ... 2 



2. Head of an Iclithyosaurus, from the Liassic rocks of 



Lyme Regis ...... 6 



3. The skeleton of the Megatherium found in the 



alluvial sands of the Argentine Republic . . 7 



4. The skeleton of a gigantic extinct rat-like animal — 



the Toxodon — from the Argentine Republic . 8 



5. Photographs of two skiills of Rhinoceroses in the 



Natural History Museum . . . .10 



6. Photograph of the thigh-bone of the great extinct 



reptile, Atlantosaurus, from the Jurassic rocks 



of the United States of America . . .11 



7. The Common Grey Wolf {Canis lupus) of Europe, 



once common in England .... 14 



8. Photograph of a mounted specimen of the Beaver 15 



9. Skull of the great extinct Bull, the Bos Primigenius 



or the Urus, or Aurochs ..... 17 



ix 



