1 66 Instinct and Intelligence 



lectual processes. The following pages will 

 further show, that the neopallium also consti- 

 tutes the organ by which the movements of the 

 higher orders of animals become speedily ad- 

 justed to changes of their environment. In 

 conclusion, we indicate the lines on which the 

 results of a study of the nature and functions 

 of the brain may be applied in forming sound 

 ideas as to the education of children. 



It is found that the nerve cells of the neo- 

 pallium of imbeciles are structurally defective 

 when compared with those of right-minded 

 people; in fact, in proportion to the deficiency 

 of the cerebral cortex in this respect so is the 

 intellectual deficiency. 1 One of the earliest 

 symptoms of a disease known as the general 

 paralysis of the insane, which depends on the 

 degeneration of the nerve cells and fibres of 

 the cerebral cortex, is a peculiar hesitation and 

 irregular movement of the lips and other 

 muscles concerned in the production of articu- 

 late speech, which indicates an impaired action 

 of the terminal nerve cells constituting the 



1 The Brain in Health and Disease, by Dr. J. Shaw Bolton, 

 PP. 37 8 6- 



