LIST OF ILLUSTRATIONS IN TEXT. 



FIG. PAGE 



1. Block of Flint from Crayford, Kent, broken by Palaeolithic 



Man in making an Implement ; also the unfinished 

 Implement made from the same ..... 7 



2. Palatal view of left upper teeth of Ada^ns maf/na, from 



Upper Eocene, Hordvvell . . . . . .11 



3. Model of skull and mandible of Mcgaladapis lusigiiis, from 



a Cavern in Madagascar . . . . . .11 



4. Head of the " Habre-tootlied Tiger " (MacJixrodus neogams), 



from the Pampa Formation of Buenos Aires. (After 



W. D. ]\Iatthew) 13 



5. Skull and mandible of the Cave-bear {Uraus spelxus), 



from a Pleistocene Cavern Deposit in Bavaria . . 14 



6. Molar tooth of Hyxnarctos, from the Red Crag of Suffolk . 15 



7. Right ramus of mandible of CephalogaJe hrevirostris, from 



the Oligocene Phosphorites of France .... 15 



8. Skeleton of H>/,xiiodoii cruciitiis, Leidv, from the Oligocene 



of Dakota, U.S.A. (After W. B. Scott) .... 16 



9. Skeleton of fore foot of Perissodactyl or Uneven-toed 



Ungulata (Tapir, Rhinoceros, and Horse) ... 19 



10. Skull and mandible of the Slender-nosed Rliinoceros 



(lihinoccroa Icpforhiiiitu), from the Pleistocene of Uford, 

 Essex 20 



11. Skull and mandible of Accratlicrium mcgalodus, from the 



Upper Miocene of Colorado, U.S.A. (After Cope) . . 21 



12. Skeleton of Titanothcrium rohustum, from the Oligocene 



of Dakota, U.S.A 23 



13. Diagram showing the gradual loss of toes in the feet and 



increase of complexity in the teeth of the Horse-like 

 Ungulata ......... 24 



14. Left upper teeth in maxilla of Palxotlierium crassum, 



horn the Upper Eocene Gypsum of Montmartre, Paris. 

 (After Gaucky) 25 



15. Restoration of the skeleton and outline of the body of 



PaJiKotherium magnum. (After Cuvier) ... 26 



16. Third right upper true molar tooth of Chalicothcriu in 



nineiise from the Pliocene of China . . . .27 



17. Skeleton of fore foot of Artiodactyl or Even-toed Ungulata 



(Pig, l^eer, and Camel). ...... 28 



18. Skull, symphysis of mandible, and tooth of HippopotamuH 



sivalensis, from the Lower Pliocene of the Siwalik Hills, 

 India .......... 30 



