264 LECTURE VI. 



Mr. Hunter has in his MS. particularly 

 described the various forms of the brain in 

 the lower classes of animals, and has exhi- 

 bited specimens, showing its varieties, in 

 his Museum. As this organ becomes large 

 and complex, so, it is well known, do ani- 

 mals proportionately possess various per- 

 ceptions, propensities, faculties, and senti- 

 ments; which induced Mr. Hunter to be- 

 lieve that it was the organ of sensation and 

 other properties originating in that source. 



e- 

 These circumstances being shown, the 

 different organs of sense are next exhi- 

 bited ; and the structure of the eye of the 

 fish and bird appears to have been parti- 

 cularly examined and contrasted by Mr. 

 Hunter. But I must not enter into this 

 subject, for it would be useless to begin 

 without proceeding ; and if I proceeded, I 

 should weary both myself and my audience 

 before I returned to the point from which 

 I had set out. Neither do I perceive that 

 any conclusion can be drawn from the most 

 patient investigation of the subject, except 



