224 ANIMAL BEHAVIOUR 



for higher issues by a structural organisation (badly called 

 mechanisation) of capacities for effective behaviour. 



In the case of man there is evidence of rational conduct on a 

 higher level than intelligent behaviour. It implies conceptual as 

 distinguished from perceptual inference, and is controlled in ref- 

 erence to general ideas, ' values/ or conscious purpose. 



Four general impressions stand out: (1) The extraordinary 

 variety of ways in which living creatures express themselves, assert 

 themselves, and bend the Titan of the inorganic to their endeavour. 



(2) The pervasiveness of mentality at all levels of organisation. 



(3) The growing scope of spontaneity and individuality as we 

 ascend the series. (4) A gradual emancipation of the organism from 

 environmental coercion. 



