340 



SUBJECT INDEX 



Sugars, action of light on, 92 



synthesis of, 85, 86 



Sulphur trioxide, production of, 235 

 Sunlight, action on enzymes and cells, 

 206 



action on formaldehyde, 83-91 



syntheses by, 38-52 



transformation into energy, 82 

 Syphilis, action of mercury salts in, 331 



Temperature, influence on enzymes, 

 202, 206 



influence on living cells, 204-206 



optimum, 203, 205 

 Thrombase, 225 

 Thymol, toxic action of, 212 

 Toluol, toxicity to cells, 212 

 Triethylamine, reaction with ethyl 



iodide, 238 



Trimolecular reactions, 181 

 Trypanosomes, action of atoxyl on, 332 

 Trypsin, action of heat on, 202, 204 



action on proteins, 189 



concentration and activity, 199 

 Trypsinogen, 217 



Tumours, growth of, 20 

 Turpentine as negative catalyst, 214 



Ulothrix, iron in, 66 

 Ulva latissima, iron in, 66 

 Uranium acetate, crystalloidal, 40 



Uranium, hydroxide, colloidal, photo- 

 synthesis by, 43-47, 79-80 

 preparation of, 43 



nitrate, crystalloidal, 46 



sulphate, crystalloidal, 42 



Urea, work done in secreting, 267, 268 

 Urine, secretion of urea and sodium 



chloride, 267-269, 272 

 " Uviol " mercury lamp, 43, 47, 48, 50 



Vaccine, virus of, 213 



Vagus nerves, section of, effect on 



secretion, 280, 285 

 Vaucheria, iron in, 66 

 Velocity of reaction, 164-201 



in catalysis, 237 



Volume energy, 142-145 



Water, formation of, 229 



hygroscopic absorption of, 309 

 purification of, 77, 96 



Watercress, iron in, 67 



Work done by secreting cells, 264-269 



Yeast, iron in, 65 



Zymase, fermentation of glucose by, 



188 



Zymo-excitators, 216 

 Zymogens, 216 



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