CONTENTS. 



CHAPTER LVIII. 



PAGE 



DEVELOPMENT ; . . . . . 803 



The Ovum .... 803 



Changes in the Ovum previous to Fecundation .... 804 



Impregnation 805 



Segmentation 806 



Foetal Membranes . . . 815 



Development of the Decidua , .. ... . . .817 



Development of the Foetal Membranes ...... 818 



Development of the Framework of the Body . . j . , . 824 



Formation of the Head , . . 826 



Development .of the Vascular System ...... 830 



Development of the Nervous System . . . . . , . . 84 1 



Development of the Alimentary Canal 851 



Development of the Respiratory Apparatus 854 



Development of the Genito-urinary Apparatus .... 855 



INDEX . . . ..... .... . . 863 



