VIII 



CONTENTS 



and the enzyme 



systems in 



V." RESPIRATION . 



Respiratory quotient 



Fermentative processes 

 Intensity 

 Stimulation . 

 The action of anaesthetics 

 The action of ionized air 

 Conditioning factors 



Temperature . 



Food 



Water . 



Salts 



Acidity . 



Light . 

 The mechanism of oxidation, 

 volved 



Dehydrase 



The Schardinger reaction 



The nitrate-reducing enzyme of the potato 



Respiratory pigments 



Glutathione 



Oxidases 



Catalase 

 Fermentation : zymase and carboxylase 



Alcoholic fermentation 



Lactic acid fermentation . 



Butyric acid fermentation 



Factors influencing alcoholic fermentation by yeast 

 Current ideas on the mechanism of respiration 



VI. GROWTH . 



The conditioning factors 

 Temperature 

 Light . 

 Water . 

 Nutrition 

 Auximones 

 Hormones 



INDEX . 



FAGE 



99 

 1 02 

 106 

 no 

 114 

 116 

 119 

 120 

 120 



125 

 129 



133 

 134 

 135 



136 

 138 

 140 

 141 



M5 

 146 

 148 

 149 

 152 

 153 

 154 

 154 

 155 

 159 



169 

 187 

 187 

 194 

 202 

 203 

 209 

 211 



215 



