THE GORILLA 9 



they have warm blood which circulates through their bodies from 

 a four-chambered heart; thirdly, they breathe air by means of 

 lungs. 



The Mammals are usually divided into eleven orders: 



(i.) Primates (such as the ape, monkey, and lemur). 



(2.) Chiroplera, or hand-winged animals (bats). 



(3.) Insectivores, or insect-eaters (such as the mole and 

 hedgehog). 



(4.) Carnivores, or flesh-eaters (such as the lion, tiger, cat, 

 dog, and bear). 



(5.) Ungulates, or hoofed animals (such as the horse, rhino- 

 ceros, sheep, pig, and ox). 



(6.) Sirenia (such as the sea-cow and dugong). 



(7.) Cetacea (such as the whale, dolphin, and porpoise). 



(8.) Rodents, or gnawers (such as the rat, mouse, beaver, 

 porcupine, and rabbit). 



(9.) Edentates, or toothless animals (such as the sloth, arma- 

 dillo, and ant-eater). 



(10.) Marsupials, or pouched animals (such as the kangaroo 

 and opossum). 



(11.) Monotremes, or egg^laying animals (such as the ornitho- 

 rhynchus). 



THE PRIMATES 



THE GORILLA 



The Primates form that order of the class of Mammals that 

 approaches most nearly to Man. In fact, if we consider only his 

 bodily structure, and take no account of his intellect, Man himself 

 must be included among the Primates. To the Primates belong 

 all the members of the ape tribe, the monkeys, and the lemurs. 

 Their home is, as a rule, in the dense forests of tropical countries, 

 very few being found in the colder regions of the earth. 



The most important of all the Primates is the great ape which 

 we call the Gorilla. It is the largest and fiercest of all the apes, 



