TABLE OF CONTENTS. 15 



PAGE 



CHAPTER LIII. PHYSIOLOGY OF THE MALE REPRODUCTIVE ORGANS. . . . 987 



Sexual Life of Male, 987. Properties of the Spermatozoa, 988. Chemistry 

 of the Spermatozoa, 990. The Act of Erection, 991. Reflex Apparatus of Erec- 

 tion and Ejaculation, 992. 



CHAPTER LIV. HEREDITY; DETERMINATION OF SEX; GROWTH AND 



SENESCENCE 994 



Definition of Heredity, 994. Evolution and Epigenesis, 994. Theory of Mu- 

 tations, 996. The Mendelian Law, 997. Determination of Sex, 999. Growth 

 and Senescence, 1001. 



APPENDIX. 

 I. PROTEINS AND THEIR CLASSIFICATION 1009 



Definition and General Structure of Proteins, 1009. Reactions of Proteins, 1011. 

 Classification of Proteins, 1013. The Albumins, 1013. The Globulins, 1014. 

 The Glutelins, 1014. Alcohol-soluble Proteins (Prolamines), 1014. Albuminoids, 

 1014. Protamins and Histons, 1014. The Conjugated Proteins, 1015. The 

 Derived Proteins, 1016. 



II. DIFFUSION AND OSMOSIS 1016 



Diffusion, Dialysis, and Osmosis, 1016. Osmotic Pressure, 1017. Electrolytes, 

 1018. Gram-molecular Solutions, 1018. Calculation of Osmotic Pressure in 

 Solutions, 1019. Determination of Osmotic Pressure by the Freezing Point, 

 1019. Application to Physiological Processes, 1020. Osmotic Pressure of Pro- 

 teins, 1020. Isotonic, Hypertonic, and Hypotonic Solutions, 1020. Diffusion or 

 Dialysis of Soluble Constituents, 1021. Diffusion of Proteins, 1021. 



INDEX . . 1023 



