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Now these other orders are — 
1. The order which contains Man and Apes. 
2. That of the Bats. 
3. That of the Mole, Shrew, Hedgehog, and their allies — all 
insectivorous . 
4. That of the Hog, Cat, Weasel, and Bear — all carnivorous . 
5. That of the gnawing animals, such as the Rat, Squirrel, 
Jerboa, and Guinea-pig — all with cutting teeth -J, with per- 
manent pulps. They are called Rodents. 
6. The order containing the Sloths. 
7. That of the grazing, hoofed quadrupeds — Deer, Antelopes, 
and their allies. 
Tig. 16. 
The Yapock ( Chironictes . ). 
Besides three orders of aquatic beasts (Seals, Whales, and the 
Manatee order), with which we need not be now further con- 
cerned. 
Now, in the first place, very noticeable is the much greater 
diversity of tructure found in the kangaroo’s order than in any 
other order of mammals. While each of the latter are of one 
predominate type of structure and habit, we have found in the 
marsupials the greatest diversity in both. 
Some marsupials are, we have seen, arboreal, some are 
burrowing, some flit through the air, while others range over 
and graze upon grassy plains. Some feed on vegetable food 
only, others are as exclusively insectivorous or carnivorous, 
