CONTENTS. 



PART I.— GENERAL DEVELOPMENT. 



CHAPTER I. 



The Cell and Cell Proliferation . . i 



The Cell i 



Cell Division 3 



Amitosis .... .... 3 



Mitosis . ... . . 4 



Practical Suggestions 9 



References for Further Study 9 



CHAPTER II. 



The Sexual Elements — Ovum and Spermatozoon 



The Ovum 



The Spermatozoon 



Practical Suggestions 



References for Further Study . 



CHAPTER III. 



Maturation 17 



Maturation of the Ovum ... 17 



Spermatogenesis 21 



Theoretical Aspects of Reduction 28 



Ovulation and Menstruation 30 



Practical Suggestions . . ... 33 



References for Further Study 34 



CHAPTER IV. 



Fertilization 35 



Significance of Fertilization „ 40 



Practical Suggestions 41 



References for Further Study 41 



vii 



