64 



' However, I readily concur in the pro- 

 position, that the brain of animals ought 

 to be regarded as the organization by which 

 their percipient principle becomes variously 

 affected. First, because in the senses of 

 •sight, hearing, and smelling, I see distinct 

 organs for the production of each sensations 

 Secondly, because the brain is larger and 

 more complicated in proportion as the va* 

 Hety of affections of the percipient principle 

 •is increased. Thirdly, because diseases and 

 injuries disturb or annul particular faculties 

 and affections, without influencing others ; 

 and. Fourthly, because it seems to me 

 more reasonable to suppose that whatever 

 is perceptive may be variously affected by 

 means of vital actions transmitted through 

 a diversity of organization, than to suppose 

 that such variety depends upon original 

 differences in the nature of the percipient 

 principle. 



