LIST OF ILLUSTRATIONS 



FIGURES IN THE TEXT 



FIG. PAGE 



1. FLOWER OF THE YELLOW SAGE 4 



2. THE- EDELWEISS 6 



3. "FOLDING" OF ROCK STRATA 8 



4. A MAN EXTRACTING THE JEWEL FROM A TOAD'S HEAD 89 



5. THE PALATE OF THE FOSSIL FISH LEPIDOTUS. . . 91 



6. UNDER-SURFACE OF THE FROND OF THE COMMON 



POLYPODY FERN 96 



7. GERMINATION OF THE SPORE OF A FERN . . . 100 



8. UNDERSIDE OF THE PROTHALLUS OF A FERN . . . 101 



9. THE SPERM-SACS AND EGG-PITS OF THE PROTHALLUS 



OF THE FERNS 105 



10. THE RELATION OF THE SPORE-PRODUCING LEAVES OR 

 LEAFLETS OF A ROYAL FERN, A PINE TREE, AND AN 



ORDINARY FLOWER in 



n. THE INDIAN ELEPHANT 120 



12. THE AFRICAN ELEPHANT . . . . . . . .121 



13. THE CROWNS OF THREE "GRINDERS" OR MOLARS OF 



ELEPHANTS COMPARED 126 



14. SKELETON OF THE INDIAN ELEPHANT . . . .137 



15. THE TEETH IN THE UPPER AND LOWER JAW-BONE OF 



THE COMMON PIG 140 



1 6. A RECONSTRUCTION OF THE EXTINCT AMERICAN MAS- 



TODON . . . . 142 



17. SKULL AND RESTORED OUTLINE OF THE HEAD OF THE 



LONG-JAWED EXTINCT ELEPHANT CALLED TETRA- 



BELODON . 143 



