STRUCTURE OF THE MAMMALIA. 8? 



Ounng-oatang. 



LESSON XL 



FIRST CLASS OF ANIMALS MAMMALIA. 



ALL animals, however various their forms, and 

 however different in their modes of living, have 

 been arranged into six classes. The first of these 

 classes is called mammalia, because the animals 

 included in it suckle their young, till they are able 

 to provide themselves with food. They have also 

 been called viviparous animals, because their 

 young are born alive. 



The mammalia, generally speaking, are qua- 

 drupeds, that is four-legged animals: man has 

 however, two feet, and is hence called a biped; 

 and the monkey tribe, instead of four feet, have 

 four hands, and are called quadrumanouSy or four 

 handed animals. 



The greatest part of the mammalia live upon the 

 ground. There are however some, as apes, squir- 



