XX TABLE OF CONTENTS. 



THE GUSTATORY APPARATUS. 



Situation and Structure of the Organs of Taste 916 



Gustatory Sensations, 917 



THE TACTILE APPARATUS. 



Terminations of the Sensory Nerves, 920 



Sensory and Tactile Sensations, 922 



Sense of Space, 924 



The Pressure-sense, 927 



The Temperature-sense, . . 930 



Common Sensation. Pain, 934 



The Muscular Sense. Power-sense, 936 



PHYSIOLOGY OF REPRODUCTION AND DEVELOPMENT. 



Varieties of Generation, 938 



The Seminal Fluid, 942 



The Ovum, 946 



Puberty, . 951 



Menstruation, 951 



Erection, 955 



Ejaculation. Reception of the Seminal Fluid, . . 957 



Impregnation of the Ovum, 958 



Cleavage, Morula, Blastula, Gastrula, Formation of the Germinal Layers. 



First Rudiments of the Embryo, 961 



Formations from the Epiblast, 966 



Formations from the Hypoblast and the Mesoblast, 969 



Folding Off of the Embryo. Formation of the Heart and the First Circu- 

 lation, 970 



Further Development of the Body, 972 



Formation of the Amnion and the Allantois, 974 



Human Fetal Membranes. Placenta. Fetal Circulation, 975 



Chronology of Human Development. Fetal Movements, 980 



Development of the Osseous System, 983 



Development of the Vascular System, 990 



Development of the Alimentary Canal, 993 



Development of the Urinary and Sexual Organs, . . 995 



Development of the Central Nervous System, 1000 



Development of the Organs of Special Sense, 1001 



Parturition, 1002 



Comparative. Historical, 1004 



