CONTENTS. 



PART I. GENERAL DEVELOPMENT. 



CHAPTER I. 



THE CELL AND CELL PROLIFERATION ... i 



The Cell ....'... I 



Cell Division 3 



Amitosis 



Mitosis 4 



Practical Suggestions . 9 



References for Further Study 9 



CHAPTER II. 



THE SEXUAL ELEMENTS OVUM AND SPERMATOZOON . . 10 



The Ovum I0 



The Spermatozoon 



Practical Suggestions I 5 



References for Further Study 16 



CHAPTER III. 



MATURATION J 7 



Maturation of the Ovum 17 



Spermatogenesis 21 



Theoretical Aspects of Reduction 28 



Ovulation and Menstruation 3 



Practical Suggestions 33 



References for Further Study 34 



CHAPTER I>. 



FERTILIZATION 35 



Significance of Fertilization 4 



Practical Suggestions 4 1 



References for Further Study ... 4 1 



V 



