LIST OF ILLUSTRATIONS 



Fig. t. Successive forms o{ Paludina, from the Tertiary deposits 

 of Slavonia ...... 



2. Skeleton of Seal ...... 



3. Skeleton of Greenland Whale 



4. Paddle of Whale compared with Hand of Man 



5. Wing of Reptile, Mammal, and Bird 



6. Skeleton of Di)!0}-nis gravis .... 



7. Hermit-crabs compared with the cocoa-nut crab 



8. Rudimentary or vestigial hind-limbs of P)lhon 



9. Afleryx An sir alii ..... 

 10. Illustrations of the nictitating membiane in various 



animals named ..... 

 li. Rudimentary, or vestigial and useless, muscles of the 

 human ear ....... 



12. Portrait of a young male gorilla .... 



13. Portrait of a young male child .... 



14. An infant, three weeks old, suppoiting its own weight 



15. Sacrum of Gorilla compared with that of Man, showing 



the rudimentary tail bones of each 



16. Diagrammatic outline of the human embryo when about 



seven weeks old .... 



17. Front and back view of adult human sncrum 



18. Appendix vermiformis in Orang and in Man 



19. The same, showing variation in the Orang 



20. Human ear ...... 



21. Fcetus of an Orang .... 



22. Vestigial characters of human ears 



23. Hair-tracts on the arms and hands of Man, as compared 



with those on the arms and hands of Chimpanzee 



24. Molar teeth of lower jaw in Gorilla, Orang, and Man 



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