CONTENTS 



PART I 



THE PHYSICOCHEMICAL BASIS OF PHYSIOLOGICAL 



PROCESSES 



CHAPTER I PAGE 



GENERAL CONSIDERATIONS 1 



The Laws of Solution, 3; Gas Laws, 3; Osmotic Pressure, 4; Biological Meth- 

 ods for Measuring Osmotic Pressure, 6; Hemolysis, 7; Plasmolysis, 8. 



CHAPTER II 



OSMOTIC PRESSURE (CONT'D.) 10 



Measurement by Depression of Freezing Point, 10; The Role of Osmosis, Dif- 

 fusion, and Allied Processes in Physiological Mechanisms, 11. 



CHAPTER III 



ELECTRICAL CONDUCTIVITY, DISSOCIATION, AND IONIZATION . . 10 



Biological Applications, 19. 



CHAPTER IV 



THE PRINCIPLES INVOLVED IN THE DETERMINATION OF THE HYDROGEN-ION CONCEN- 

 TRATION 22 



Titrable Acidity and Alkalinity, 22; Actual Degree of Acidity or Alkalinity, 

 23; Mass Action, 23; Application to the Measurement of H-ion Concentration, 

 26; Application in Determining the Real Strength of Acids or Alkalies, 28. 



CHAPTER V 



THE PRINCIPLES INVOLVED IN THE MEASUREMENT OF HYDROGEN-ION CONCENTRA- 

 TION (CONT'D) 29 



The Electrical Method, 29; The Indicator Method, 32. 



CHAPTER VI 



REGULATION OF NEUTRALITY IN THE ANIMAL BODY AND ACIDOSIS 3G 



Buffer Substances, 36 ; Theory of Acidosis, 38 ; Measurement of the Reserve 

 Alkalinity, 41; Tit-ration Methods, 41; CO,-Combining Power, 42; Indirect 

 Methods, 46. 



CHAPTER VII . 

 COLLOIDS 51 



Characteristic Properties, 51 ; Characteristics of True Colloidal Solutions, 5L> ; 

 Tyndall Phenomenon, 52; Relative Indiffusibility, 52; Electrical Properties, 

 56; Browuian Movement, 58; Osmotic Pressure, 58. 



xi 



