CONVERSATION VII. 



The senses the eye eye-brows eye-lids eye-lashes 



tears sclerotic coat choroid cornea iris 



aqueous humor crystalline lens retina modifica- 

 tion of the rays by the coats and humors short-sight- 

 edness motions of the. eyes squinting vision as- 

 sisted by the other senses. Vision of birds of fishes 

 of insects. Hearing sound anatomy of the ear 

 hearing assisted by the other senses hearing of the 

 inferior animals. Smelling use of the sense of smell 

 smelling of the inferior animals. Taste influence 

 of civilization upon taste taste of the inferior ani- 

 mals the touch integuments human complexion 

 albinos. The voice larynx larynx of the inferior 



animals cries language singing ventriloquism 



voice of birds. 



Dr. B. By the organs of the senses, we refer to 

 those by means of which, impressions made on certain 

 portions of the nervous system, are conveyed to the 

 brain, and there excite corresponding sensations. The 

 senses may be said to be the bond of connection in the 

 animal between the external and internal world ; and 

 raising the creature above the state of mere vegetable 

 existence, they place him in close relations with the ob- 

 jects around him, arid give him an elevated rank in the 

 general system of nature. Each one gives him an en- 

 tirely distinct set of ideas, which he could have obtained 



