TABLE OF CONTENTS 



CHAPTER I 



PAGES 



THE CELL .......... 1-15 



The cell theory, 1 ; The germ-cells, 2 ; The cell, 3 ; Is 

 the cell the physiological unit ? 4 ; The structure of the 

 cell, 5 ; Protoplasm, 6 ; The nucleus, 7 ; Growth by cell 

 division, 8 ; How cells divide, 9 ; Prophase, 10 ; Meta- 

 phase, 11 ; Anaphase, 12 ; Telophase, 13; The germ-cells 

 in detail, 14 ; The ovum, 15 ; The spermatozoon, 16. 



CHAPTER II 

 REPRODUCTION ......... 16-51 



Asexual reproduction, 17 ; Sexual reproduction, 18 ; 

 The reproductive process, 19 ; Oviparous animals, 20 ; 

 Primary and secondary sexual characters, 21 ; The re- 

 productive organs of the male, 22; The testicles, 23; 

 Castration, 24 ; The reproductive organs of the female, 

 25 ; The ovaries, 26 ; The Fallopian tubes, 27 ; The 

 uterus, 28 ; The mammary glands, 29 ; Structure of 

 mammary glands, 30 ; Fertilization of the ovum, 31 ; 

 The nature of fertilization, 32 ; The process of fertiliza- 

 tion, 33 ; The chromosomes, 34 ; Results of the union of 

 egg and sperm, 35 ; Changes in the ovum, 36 ; Changes 

 in the spermatozoon, 37 ; The significance of reduction, 

 38 ; The origin of the germ-cells, 39 ; Maturation and 

 reduction in the female (oogenesis), 40 ; Reduction in 

 . the male (spermatogenesis), 41 ; The period of the 

 oestrum or heat, 42 ; Artificial insemination, 43 ; Meth- 

 ods of artificial insemination, 44 ; Conditions influenc- 

 ing the vitality of the sperm-cells, 45 ; Effect of too 

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