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CHAPTER XXVIT. 



MAMMALIA. 



Modifications in the Structure of their Limbs Fins of the Whale, Walrus, and 

 Seals Wings of the Bat The Nycteris The Flying Squirrel Shovels of 

 the Mole Limbs of the Cervine and Bovine Eaces The colossal Pillars of the 

 Elephant The Hare The Jumping HareThe Kangaroo The Sloth Mon- 

 keys Leaps of the Wanderoo The Squirrels Soles and Toes Sole-pads of 

 the Camel Prehensile Tail of the American Monkeys and other Quadrupeds 

 Tail of the Aquatic Mammalia, of the American Ant-Bear, of the Kangaroo and 

 Pengolin Masticatory Organs Teeth of the Carnivora, the Kuminantia, and the 

 Rodents The Baleen of the Whale The Ant-eater's Tongue The Stomach, of 

 the Ruminants The Camel's Paunch Water-pouches of the Elephant Cheek- 

 pouches of the Hamster Senses of the Mammalia The Elephant's Proboscis 

 Defensive and Aggressive Weapons of Mammalia Burrows of the Prairie Dog 

 The Hamster's Cave Habitations of the Beaver and the Musquash The Mole 

 and the Australian Duckbill The Armadillo and the Hedgehog The Porcu- 

 pine The Skunk Gregarious Quadrupeds Guards Bird -guardians of the 

 Rhinoceros and the African Buffalo Friendships of Animals The Tiger and the 

 Dog Attachment of Domestic Animals to Man Parental Affection Pouch of 

 the Opossum and Kangaroo Services of the Quadrupeds Sagacity of the Dog, 

 the Horse, the Monkey and the Elephant Hybernation Happiness of the 

 Wild Quadrupeds. 



THE Mammalia, the last-born of creation, exhibit the highest 

 types of organic development, a greater harmony between the 

 various parts of the nervous system than is found in any of the 

 preceding classes, an increasing preponderance of the brain. 

 Several of them such as the Rodents or Opossums are, no 

 doubt, inferior to many of the birds in point of intelligence and 

 instinct ; but even the most perfect among the feathered tribes 

 are not to be compared in this respect to the horse, the dog, the 

 elephant, or the ape ; and although civilized man delights in the 

 song of birds, or in the beauty of their plumage, yet his con- 

 nection with the domestic mammalia is far more intimate; 

 for without the assistance of these humble companions, his own 



