CONTENTS 



CHAPTEU i I'AGK 



iMKODUCnoN 17 



The ClIEMlSTKY and rilYSlCS OF THE CELL 17 



Chemistry of the Essential Cell Constituents 18 



Proteins It) 



Fats and Lipoids (Lipins) 23 



Carboliydiates 25 



Inorganic iSubstances 26 



The Physical Chemistry of the Cell and Its Constituents 26 



Crystalloids and iheir Properties 27 



Colloids 34 



The (Structure of the Cell in Relation to Its Chemistry and Physics . . 43 



The iS'ucleus 44 



The Cytoplasm 46 



The Cell-wall 49 



CHAPTER II 



Enzymes 53 



The Nature of Enzymes and Their Actions 54 



The Principles of Enzyme Action 56 



The Toxicity of Enzymes 61 



Anti-enzymes 63 



The Intracellular Enzymes 68 



Oxidizing Enzymes 68 



Lipase 77 



Amylase SO 



CHAPTER III 



Enzymes (Coniinued) 81 



Intracellular Proteases (Proteolytic Enzymes), Including a Considera- 

 tion of Autolysis 81 



Autolysis 82 



Relation of Autolysis to Metabolism 87 



Defense of the Cells Against Their Autolytic Enzymes 88 



Autolysis in Pathological Processes 90 



CHAPTER IV 



The Chemistry of Bacteria and Their Products 106 



Structure and Physical Properties lOti 



Chemical Composition 107 



Bacterial Enzymes 113 



Poisonous Bacterial Products 120 



Ptomains 120 



Toxins 125 



Endotoxins 129 



Poisonous Bacterial Proteins 13] 



Bacterial Pigments 132 



11 



