THE HIGHER ORGANISMS 



173 



system becomes, the more extensive are the associations 

 and memories, and the greater the intelligence. 



Fio. 66. Scheme of reflex nervous action. Relationship of cells and fibres 

 of brain and spinal cord. 



If we found it difficult to believe that the animal en- 

 gaged in a complicated instinctive action did not know 

 what it was doing, it becomes much more difficult to be- 

 lieve that an animal that remembers the results of its 



