CONTENTS 



PART I.-GENERAL DEVELOPMENT 



CHAPTER I 



THE CELL AND CELL PROLIFERATION i 



The Cell . i 



Cell Division 3 



Amitosis . 3 



Mitosis 4 



References for Further Study 9 



CHAPTER II 



THE GERM CELLS OVTJM AND SPERMATOZOON 10 



The Ovum i o 



The Spermatozoon 13 



References for Further Study 15 



CHAPTER III 



MATURATION 17 



Spermatogenesis Maturation of the Sperm 17 



Maturation of the Ovum 21 



Significance of Mitosis and Maturation 25 



Sex Determination 27 



Ovulation and Menstruation 29 



References for Further Study 32 



CHAPTER IV 



FERTILIZATION 33 



Significance of Fertilization 38 



References for Further Study 39 



CHAPTER V 



CLEAVAGE (SEGMENTATION) 40 



Forms of Cleavage 40 



Holoblastic Cleavage 41 



Equal 41 



Unequal 42 



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