TABLE OF CONTENTS. 15 



PAGE 



Chapter LIII. — Physiology of the Male Reproductive Organs.. 996 



Sexual Life of Male, 996. — Properties of the Spermatozoa, 997. — -Chetnistry 

 of the Spermatozoa, 999. — The Act of Erection, 1000. — Reflex Apparatus of 

 Erection and Ejaculation, 1001. 



Chapter LIV. — Heredity; Determination of Sex; Growth and 



Senescence 1003 



Definition of Heredity, 1003. — Evolution and Epigenesis, 1003. — Theory of Mu- 

 tations, 1005.— The Mendelian Law, 1006.— Determination of Sex, 1008.— 

 Growth and Sene.scence, 1010. 



APPENDIX. 



I. — Proteins and Their Classification 1019 



Definition and General Structure of Proteins, 1019. — Reactions of Proteins, 1021. 

 — Classification of Proteins, 1023.— The Albumins, 1023. — The Globulins, 1024. 

 — The Glutelins, 1024. — Alcohol-soluble Proteins (Prolamines), 1024. — Albumin- 

 oids, 1024. — Protamins and Histons, 1024. — The Conjugated Proteins, 1025. — 

 The Derived Proteins, 1026. 



II. — Diffusion and Osmosis 1026 



Diffusion, Dialysis, and Osmosis, 1026. — Osmotic Pressure, 1027. — Electrolytes, 

 1028. — Gram-molecular Solutions, 1028. — Calculation of Osmotic Pressure in 

 Solutions, 1029. — Determination of Osmotic Pressure by the Freezing-point, 

 1029. — Application to Physiological Processes, 1030. — Osmotic Pressure of Pro- 

 teins,, 1030. — Isotonic, Hypertonic, and Hypotonic Solutions, 1030. — Diffusion or 

 Dialysis of Soluble Constituents, 1031. — Diffusion of Proteins, 1031. 



Index 1033 



