CONTENTS IX 



CHAPTER X. 



Physiological Activities {Continued). 

 Putrefaction of Proteins 



CHAPTER XI. 

 Physiological Activities {Continued). 



Production of Acids 96 



Gas Production 96 



Production of Esters 96 



Production of "Aromatic" Compounds 97 



Phosphorescence or Photogenesis 97 



Production of Pigment or Chromogenesis 98 



Reducing Actions 99 



Oxidation 100 



Production of Heat 102 



Absorption of Free Nitrogen 103 



Nitrogen Nutrition of Green Plants 105 



CHAPTER XII. 



Physiological Activities {Continued). 



Production of Enzymes 107 



Production of Toxins 112 



Causation of Disease 114 



Antibody Formation 115 



Staining 115 



Cultural Characteristics 115 



CHAPTER Vm. 



Disinfection— Sterilization— Disinfectants. 



Physical Agents 117 



1. Drying 117 



2. Heat 118 



Dry Heat 119 



Moist Heat 119 



Steam Heat 120 



3. Cold 134 



4. Light 134 



5. Osmotic Pressure 135 



6. Electricity 136 



7. Filtration 138 



8. Burying 140 



