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LIST OF ILLUSTRATIONS 



Portrait of Author 



Map showing the 1000-fathom line 



. Frontispiece 

 To face page 349 



FIG. 



1. Diagram of Variations of Lacerta muralis 



2. ,, Variation of Lizards . 



3. ,, Variation of wings and tail of Birds 



4. ,, Variation of Dolichonyx oryzivoeus 



5. ,, Variation of Agel^us phcenicetts 



6. ,, Variation of Cardinalis virginianus 



7. ,, Variation of tarsus and toes 



8. ,, Variation of Birds in Leyden Museum 



9. ,, Variation of Icterus Baltimore 



10. ,, Variation of Agel^us phceniceus 



11. ,, Curves of Variation . 



12. ,, Variation of Cardinalis virginianus 



13. ,, Variation of Sciueus caeolinensis . 



14. ., Variation of skulls of Wolf 



15. ,, Variation of skulls of Ursus labiatus 



16. ,, Variation of skulls of Sus cristatus 



17. Primula veris (Cowslip). Yvom. Yiaxwiris Forms of Floioers 



18. Gazella scemmerringi (to show recognition marks) 



19. Recognition marks of African Plovers (from Seebohm' 



Charadriadoe ...... 



PAGK 



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