LIST OF ILLUSTRATIONS. 



GOLDEN HEN-PHEASANT IN COCK'S PLUMAGE ... Frontispiece 



FIG. PAGE 



1. A DACE WITH SPOTS OF BLACK PIGMENT DUE TO 



THE IRRITATION OF A PARASITE ... ... 4 



2. HEAD OF FEMALE MOOSE WITH ANTLERS ... 5 



3. ANTLERS OF ROE-DEER WITH NODE ... ... 7 



4. HEAD OF COW WITH AN ABNORMAL HORN .,. 8 



5. HEAD OF RHINOCEROS... ... ... ... 9 



6. THE LEG OF AN OYSTER-CATCHER WITH HORN IO 



7. HEAD OF THE HORNED PUFFIN... ... ... II 



8. SECOND TOE ENLARGED FROM EXCESSIVE USE... 1$ 



9. FINGER OF HORSE AND MAN ... ... ^ ... l8 



10. OVERGROWN HOOF OF GOAT ... ... 2O 



11. HEAD OF COCK WITH SPUR ... ... ... 22 



12. SPINA BIFIDA OCCULTA ... ... ... 23 



13. HEAD OF POLISH FOWL ... ... ... 24 



14. HEAD OF DUCKLING WITH FOOT ... ... 25 



15. STOMACH OF DARTER ... ... ... ... 27 



1 6. A FISH EMBEDDED IN PEARL ... ... 30 



17. THE OWL-PARROT ... ... ... .-.36 



1 8. HEAD AND SUCKING DISC OF LEPIDOSTEUS ... 37 



19. ASCIDIAN AND ASCIDIAN TADPOLES ... ... 39 



20. THE HEAD OF VARANUS ... ... ... 42 



