CONTENTS. vii 



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 171 



Cartilage 172 



Osseo ts Tissue 173 



Intramembranous Ossification 173 



Intracartilaginous Ossification ..176 



The Development of the Skeletal System ............. 182 



The Axial Skeleton Tf 182 



The Notochord 182 



The Vertebra? 183 



The Ribs .188 



The Sternum 189 



The Head Skeleton 190 



Ossification of the Chondrocranium 194 



Membrane Bones of the Skull 196 



Bones Derived from the Branchial Arches 198 



The Appendicular Skeleton 202 



Development of Joints 209 



Anomalies 213 



Practical Suggestions 217 



References for Further Study 219 



