OLFACTORY IDENTIFICATION OF CHEMICAL UNITS 



CHOIX 



345 



Fig. 6. Group V : No discrimination. 



Thus, it is shown that olfactory stimuli and olfactory discriminations of 

 chemical units and mixtures, in rats, as in humans with their more capri- 

 cious appetites, are the best source of learning of appetites in accordance 

 with different properties of the foodstuff and metabolic bodily needs. 



