CONTENTS. XV 



PAGE 



flan Follicle Formation of the Clot Hypertrophy of the Vesicular 

 Membrane Its Yellow Color Decolorization and Condensation of the 

 Clot Atrophy and Disappearance of the Corpus Luteum Weight of 

 the Corpus Luteum at Different Periods after Menstruation CORPUS 

 LUTEUM OF PREGNANCY Its Early Condition Its Growth and Develop- 

 ment during Pregnancy Its Condition at Term Its Atrophy after 

 Delivery Distinctive Characters of the Corpus Luteum in Menstruation 

 and Pregnancy 608-615 



CHAPTER VI. 



DEVELOPMENT OF THE IMPREGNATED EGG SEGMENTATION OF 



THE VITELLUS BLASTODERM FORMATION OF ORGANS 



IN THE FROG. 



Condition of the Mature Ovarian Egg Immediate Effects of Impregnation 

 Disappearance of the Germinative Vesicle Nucleus of the Impreg- 

 nated Egg Union of the Spermatozoon and Germinative Vesicle 

 Deposit of Albuminous Layers in the Fallopian Tube Segmentation of 

 the Vitellus Vitelline Spheres Blastoderm Layers of the Blastoderm 

 Formation of Organs Embryonic Spot Area Pellucida Primitive 

 Trace Dorsal Plates Medullary Groove Medullary Canal A bdomi- 

 nal Plates Chorda Dorsalis Formation of the Cerebro-Spinal Axis. 

 Intestine, Mouth, Anus, and Limbs Transformation of Tadpole into the 

 Frog 016-622 



CHAPTER VII. 



FORMATION OF THE EMBRYO IN THE FOWL'S EGG. 



Distinctive Characters of Embryonic Development in Birds The Yolk and 

 Cicatricula Segmentation of the Cicatricula and Formation of the Blas- 

 toderm Incubation of the Egg, and Formation of the Embryo Exten- 

 sion of the Blastoderm Area Pellucida and Primitive Trace Formation 

 of the Blastodermie Layers Ectoderm. Entoderm, and Mesoderm 

 Folds of the Blastoderm Position of the Embryo in the Egg Dorsal 

 Plates, Medullary Canal, and Cerebro-Spinal Axis Protovertebra?, 

 Chorda Dorsalis, and Vertebral Column Area Vasculosa, Blood, and 

 Blood-Vessels 623-638 



CHAPTER VIII. 



ACCESSORY EMBRYONIC ORGANS UMBILICAL VESICLE. AMNION 



AND ALLANTOIS. 



Office of Accessory Organs in the Development of the Embryo Umbilical 

 Vesicle In the Fish In the Human Embryo Amnion and Allantois 

 Their Physiological Connection Amniotic Folds Amniotic Cavity 

 Formation of the Allantois Its Physiological Action Exhalation of 

 Water by the Fowl's Egg in Incubation Absorption of Oxygen and 

 Discharge of Carbonic Acid Transfer of Calcareous Matter from the 

 Shell to the Embryo Ossification of the Skeleton Escape of the 

 Chick 639-644 



