From the Unconscious to the Conscious 



special, and very distinct types, allowing of the use of 

 the organs characteristic of each species. 



Whilst palaeontology presents many rudimentary 

 organs, residues of those which are useless and dis- 

 carded, it never shows organs outlined but as yet 

 unusable. 



It seems, therefore, that abrupt transformations may 

 Well be the rule in evolution. 



But it is evident that the abrupt appearances of new 

 species can be explained neither by natural selection 

 nor by the influence of the environment. Le Dantec 

 recognises this when he exclaims, ' a mutation produced 

 under my eyes is a lock to which I have no key 1 ' * 

 1 La Crise du Transformistn*. 



