CONTENTS. 



Endochorion or "Vascular Layer 

 of the Allantois . 

 Uteiiogestation : Flacentation 

 Incapsulation of the Ovum in 



the Decidua 

 Earliest Observed Human Ova 

 Formation of Decidua 

 Structure of the Placenta . . 

 Circulation of Blood in the 

 Placenta .... 

 Further Consideration of the 

 Structure of the Placenta . 

 General Conclusion 

 Separation at Birth and Eesto- 

 ration of the Mucous Mem- 

 brane of the Uterus 

 Development of Particular 

 Organs and Systems . 

 The Skeleton and Organs of 

 Voluntary Motion . . 

 "Vertebral Column and Trunk 

 Segmentation of tlie Proto- ' 



vertebraj . . . . 



Formation of Vertebral 



Matrices .... 



The Head 



The Cranium 



The Cranial Flexures . . 



Formation of the Mouth and 



Hypophysis Cerebri 

 Subcranial, Facial, or Pha- 

 ryngeal Plates or Arches . 

 Eolations of Cranial Nerves. 

 Origin and Formation of the 

 Limbs ... 

 Development of the Muscles . 

 Formation of the Joints . 

 Development of the Organs 

 OF the Nervous System . 

 The Si)inal ]\Iarrow 

 The Brain or Encephalon . . 

 General Phenomena of De- 

 velopment in Birds and 

 Mammals 

 Fartlier Development of the 

 Brain in Man and Mam- 

 mals .... 

 Development of the Nerves . 

 Development of the Eye . . 

 Development of the Nose . . 

 Development of the Alimen- 

 tary Canal and Organs 

 arising from the Hyi'O- 

 elast ... . . 

 Alimentary Canal . 



The Liver 



The Pancreas .... 

 The Spleen, Lymphatic 

 Glands, Thymus and Thy- 

 roid Glands .... 



709 

 710 



710 

 710 

 711 

 718 



719 



721 

 723 



724 

 725 



725 

 725 



728 



730 

 731 

 732 



73^ 



734 



738 

 740 



742 

 744 

 745 



746 

 746 

 750 



750 



755 

 760 

 762 

 772 



774 

 774 

 779 

 781 



782 



Development of the Lungs 



and Trachea 



Pleurae .... 



Pulmonary "Vessels . 



Development of the Heart 



AND Blood-Vessels . 



Development of the Heart 



Origin of the Heart . 



Division into single Auricle 



Ventricle, and Arteria 



Bulb .... 



Division of the Cavities 



Ventricles 

 Division of the Auricles . 

 Division of the Arterial Bulb 

 Formation of the Valves 

 Development of the Blood 

 Vessels 

 The Principal Arteries : th 



Aorta 

 Aortic or Branchial Arches 

 Development of the Great 

 Veins 



Peculiarities of the Fcetal Or 

 gans of Circulation 

 Course of the Blood in th 

 Foetus 

 Changes in the Circulation at 

 Birth . 

 Development of the Genital 

 AND Urinary' Organs . 

 Primary Formation of the Uro 

 Genital System 

 "Wolffian Bodies 

 First (3rigin of the "Wolffian 



Bodies . 

 Homologies of the "Wolffian 



Body . 



The External Organs . 



Further History of the Deve 



lopmentof the Uro- Genital 



Organs 



Tlie Urinary Bladder and 



Urachus . 

 Genital Cord . 

 Eeproductive Organs 

 Eeproductive Glands 

 The Testicle 

 The Ovary . 

 The Genital Passages . 

 The Female Passages 

 The Male Passages . . 

 The Descent of the Testicles 

 Ty]>e of Development and Ab- 

 normal Forms of the Genital 

 Organs .... 

 Table of Corresjionding Parts of 

 Genito-Urinary Organs, and 

 their Eolation to Formative 

 Eudiments . . . . 



PAGE 



825 



826 



Index to Volume IL 



827 



