CHAPTER VIII 



VITAMINES, ACCESSORY FOOD BODIES AND 

 AUXIMONES 



Importance of accessory food bodies The perfect physio- 

 logical diet Beriberi and milled rice Vordermann's 

 contention and deficiency diseases Experimental beri- 

 beri in fowls Funk's vitamines Their origin Beri- 

 beri vitamin es and scurvy vitamines Moore's experi- 

 ments on growth Accessory food bodies and bacterized 

 peat Rosenheim's experiments on the primula Ex- 

 traction of accessory food bodies from peat First experi- 

 ments on wheat seedlings Effects of Silver nitrate and 

 Phosphotungstic acid fractions on wheat Water culture 

 experiments The same with elimination of seeds Funk's 

 vitamines compared with Hop kins' s accessory food bodies 

 Auximones Tests with Azotobacter A soil experiment 

 showing Nitrogen fixation Bacteria as a test for auxi- 

 mones The scum-forming organisms Sensitiveness of 

 the test Analogy with Hopkins's accessory food bodies 

 Auximones in rotted manure Leguminous plants as 

 sources of auximones Nature of scum-forming organisms 

 The " food of the gods " An experiment with chicks 

 and a provisional deduction The " standard bread ' 

 agitation. 



THE discovery of accessory food bodies has been 

 without question one of the most remarkable 

 advances of modern Biology. It is rather the 

 fashion nowadays to talk of recent discoveries 

 having hurried to the scrap-heap the work of earlier 

 generations. When the isolation of radium aston- 



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