CONTENTS 



PAUK 

 INTRODUCTION' 1 



CHAPTER I 



THE BREEDING SEASON - 4 



Protozoa Ccelenterata Nemertea, Etc. Annelida Arthropoda 

 Mollusca Echinodermata Cephalochordata Pisces Amphibia 

 Reptilia Aves Mammalia Associated Phenomena Periodicity of 

 Breeding, Etc. 



CHAPTER II 



THE (ESTROUS CYCLE IX THE MAMMALIA - - 32 



Monotremata Marsupialia Rodentia Ungulata Cetacea Garni vora 

 -Insectivora Cheiroptera Primates. 



CHAPTER III 



THE CHANGES THAT OCCUR IN THE NON-PREGNANT UTERUS DURING THE 



(ESTROUS CYCLE - - - 7<> 



The Cycle in Man Monkeys Lemurs Insectivores Carnivores 

 Rodents Ungulates Marsupials. 



CHAPTER IV 



CHANGES IN THE OVARY O< AGENESIS GROWTH OF FOLLICLES OVULATION 

 FORMATION OF CORPORA LUTEA AND ATRETIC FOLLICLES THE SIGNIFI- 

 CANCE OF THE PROtESTROUS CHANGES IN THE UTEKI - 109 



Development of Ovary and Ougenesis Maturation and Ovulation The 

 Formation of the Corpus Luteum The Atretic Follicle Super- 

 fretation Formation of Ova The Significance of the Pro-strous 

 Changes. 



CHAPTER V 



SPERMATOGENESISINSEMINATION 1 ">! 



Structure of Spermatozoa Seminal Fluid Movements of Spermatozoa 

 Insemination. 



CHAPTER VI 



FERTILISATION I *<U 



The Oxidation Processes of the Ovum in Fertilisation and During Early 

 Development The Hereditary Effects of Fertilisation Telegony 

 On Gametic Selection and the Conditions Favourable for the Occur- 

 rence of Fertilisation Conjugation in the Protozoa The Supposed 

 Chemotactic Properties of Spermatozoa and their Relation to the 

 Phenomena of Fertilisation Child's Theory of the Life Cycle- 

 Artificial Aids to Fertilisation Parthenogenesis, Natural and 

 Artificial. 





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