NATURAL HISTORY. 
double column—a cerebellum —and a brain, each 
advancement being uniformly characterized by some 
addition to the powers of the animal ; ail the differ- 
ent organs presenting a corresponding increase in 
number, complexity, and finish, up to man. But 
even the very lowest in the scale of animals, must 
have some glimpses of the external world by which 
it is surrounded, and thus ranks altogether and 
distinctly above the vegetable kingdom, to which we 
next nroceed 
