270 CONCLUSION. 



Urchins, Star fishes, Serpent Stars, and Crinoids ; and 

 that the Coelenterates are divided into Jellyfishes and 

 Polyps. Naturahsts call these groups Classes. 



You have learned that the Mammals are divided into 

 Man, Monkeys, Carnivora or Beasts of Prey, Ungulates 

 or Hoofed Animals, Cetaceans or Whales, Bats, Insect- 

 eaters, Rodents or Gnawers, Edentates or Marsupials ; 

 that the Birds are divided into Birds of Prey, Climbers, 

 Perchers, Scratchers, Runners, and Swimmers ; and that 

 the Reptiles, Batrachians, and Fishes, the Insects, Crus- 

 taceans, Cephalopods, Gastropods, and the other classes 

 are also similarly divided into groups. Naturalists call 

 these groups Orders. 



The Orders, again, are divided into Families, — for 

 example, the Order of Birds of Prey is divided into 

 the Family of Vultures, the Family of Falcons and 

 Eagles, and the Familj' of Owls. Families are divided 

 into Genera, — for example, the Family of Falcons is 

 divided into true Falcons, Hawks, Eagles, etc. Genera 

 are divided into. Species, — for example, the Genus of 

 true Falcons is divided into the Peregrine Falcons or 

 Duck Hawks, Pigeon Falcons or Pigeon Hawks, Spar- 

 row Falcons or Sparrow Hawks, etc. 



You have gained some idea of the way in which 

 animals are distributed over the surface of the globe. 

 Each zone of the earth's surface, each zone of height, 

 each hemisphere, each grand division of the earth, has 

 its own kinds of animals; even each of the different 

 parts of every country has animals peculiar to itself. 

 And it is so in the waters; each ocean and sea, each 

 gulf and bay, and each zone of depth, has its own ani- 

 mal forms, such as are found nowhere else. 



But the words of a book cannot fitly describe the 



