II 



Molars. 



While each species 

 of the lower animals 

 is limited to a given 

 region or country, and 

 in many cases can- 

 not survive a remov- 

 al, Man's home is 

 the whole earth, he 

 alone is truly cosmop- 

 olite. But while Man 

 is found in all zones 

 and climates, he dif- 

 fers greatly both in 

 his physical and men- 

 tal nature in different 

 regions. In the ex- 

 amination of vegeta- 

 ble life, and life as 

 revealed in animals 

 lower than Man, we 

 find that both reach 

 their highest expres- 

 sion in the hot regions. 

 Not so with Man. It 

 is not in the moist, 



Pre-molars. Canine. 

 Human Teeth. 



Fig- 15- 



Incisors. 



Nervous System of Man. 

 a, cerebrum, or principal brain, called the hemi- 



warm air of the trop- spheres: *' c< * ebellum > or smaller brain ' c > 



cord giving off its branches of nerves. 



