viii G0NXENT8. 



FAOB 



CHAPTER X. Detblopment 644 



Metamorphosis 651 



Parthenogeuesis and Alternation of Genera- 

 tions 652 



Dimorphism and Polymorphirm 654 



Individuality 656 



Hy bridity 657 



XI. The Geographical Distribution of Animals 658 



Means of Dispersal 660 



Division of the Earth into Faunae 661 



Distribution of Marine Animals 664 



Chief Zoological Faunee of the Earth 666 



XII. The Geological Succession op Animals 668 



XIII. The Origin of Species 671 



XIV. Protective Resemblance 675 



XV. Instinct and Reason in Animals 680 



XVI. Glossary 689 



XVIL Index 697 



