CONTENTS xix 



CHAPTER XXXI 

 FERTILIZATION AND KARYOKINESIS OF THE OVUM . 



PAGE 



Fecundation Maturation of the ovum Fertilization of the ovum Mendel's laws of 

 heredity Superfecundation Segmentation of the ovum Gastrulation Primitive 

 streak Formation of the membranes Formation of the amnion Amniotic liquid 



Formation of the umbilical vesicle (yolk-sac) Formation of the allantois and 

 permanent chcrion Membranse deciduae Formation of the placenta Uses of 



the placenta : 787 



CHAPTER XXXII 

 DEVELOPMENT OF THE OVUM 



Development of the cavities and layers of the trunk in the chick Development of the 

 skeleton, muscular system and skin Notochord Vertebral column etc. Develop- 

 ment of the nervous system Development of the digestive system Development 

 of the respiratory system Development of the face Development of the teeth 

 Development of the genito-urinary apparatus Development of the urinary system 



Development of the external organs of generation Development of the circula- 

 tory system The first, or vitelline circulation The second, or placental circulation 



Development of the heart Peculiarities of the foetal circulation The third, or 

 adult circulation '.; 816 



CHAPTER XXXIII 

 FCETAL LIFE DEVELOPMENT AFTER BIRTH DEATH 



Duration of pregnancy Size, weight and position of the foetus Multiple pregnancy 

 Cause of the first contractions of the uterus in normal parturition Involution of the 

 uterus Meconium Dextral preeminence Development after birth Ages 

 Death 850 



INDEX . . ... . . . -869 



