CONTENTS. ix 



The Decidua Basalis 124 



The Umbilical Cord 132 



The Expulsion of the Placenta and Membranes 134 



Anomalies 135 



Practical Suggestions 135 



References for Further Study . . ... 136 



CHAPTER VIII. 



The Development of the External Form of the Body . .... 137 



Branchial Arches — Face — Neck 149 



The Extremities 153 



Age and Length of Embryos 155 



Normal, Abnormal and Pathological Embyos 158 



Practical Suggestions 159 



References for Further Study . 161 



PART II.— ORGANOGENESIS. 



CHAPTER IX. 



The Development of Connective Tissues and the Skeletal System . 165 



Histogenesis . 167 



Fibrillar Forms . 170 



Adipose Tissue . 17 1 



Cartilage . . . . ... 172 



Osseous Tissue . . 173 



Intramembranous Ossification . . 

 Intracartilaginous Ossification . 

 The Development of the Skeletal System . . . 



The Axial Skeleton .... 



The Notochord . 



The Vertebras. ... . . . . . ■ -183 



The Ribs . .... 188 



The Sternum ... 189 



The Head Skeleton .... . 19° 



Ossification of the Chondrocranium . . . . .194 



Membrane Bones of the Skull 196 



Bones Derived from the Branchial Arches 198 



The Appendicular Skeleton 2 ° 2 



Development of Joints . . 20 9 



Anomalies 2 I3 



Practical Suggestions . . . . 2 i7 



References for Further Study 219 



173 

 176 

 182 

 182 

 182 



