CONTENTS 



Preface to the English Edition . 



Preface to the American Edition 



List of Illustrations 



Introduction 



Definition of zoology . 



Binomial nomenclature 



Individual variations 



Hybrids 



Definition of morphology 



Definition of histology . 



Definition of embryology 



Classification 



Phyla .... 



Organic evolution 



Genealogical tree 



Palaeontology 



Fossils 



Succession of life in time 



Phylogeny . 



Distribution of animals, in space and i 



The plankton 



The necton . 



The benthos 



Definition of a fauna 



Zoo-geographical regions 



Definition of physiology 



Definition of ethology or binomics 



I 

 I 



2 



3 

 3 

 4 

 4 

 4 

 5 

 7 

 9 

 9 

 io 



10 



ii 

 ii 

 ii 



12 

 12 

 12 

 12 

 12 

 12 

 13 



