ZOOLOGY. 639 



pass parallel to the Dermatozoa, Which these latter 

 are, is not indeed to be declared until the other groups 

 have been separated and brought into their proper station 

 or place. 



If once there are Ichthyoidal there must also be 

 Herpetoidal or Reptile-like Thricozoa. Now, if the 

 Whales correspond to the former, then the serial arrange- 

 ment of the latter kinds is readily enough decided. To 

 the Whales no other animals admit of being annexed but 

 the Swine-like genera, such as the Hippopotamus, Pig, 

 and Elephant, which, through their muscular mass, almost 

 naked skin, and residence in marshy situations, agree very 

 closely with the Reptilia. 



In the next place come the Ruminantia, to take their 

 site opposite the class of Birds, with whom they corres- 

 pond in their susceptibility to domestication, large ears, 

 fine sense of hearing, and timid disposition. The horns 

 must be regarded as the obscure inetatype (nachregung) 

 of the feathers. These three families may be aptly termed 

 Ungulata or Hoofed-animals. 



Were matters to fare simply thus, then the center- 

 building of this class would stand firm, and it would 

 consequently not be difficult to say which animals stood 

 below and which above it. For to the Apes are allied 

 the Bears, to these the Dogs, Cats, and Martens, and to 

 the latter again the Seals; all would rank above the 

 Ungulata or Hoofed animals, and represent the proper or 

 typical class of Thricozoa. 



But the Thricozoa are ^Esthetic or Sense-animals, and 

 consequently the upper families must pass parallel to the 

 organs of sense, if the lower correspond to the anatomical 

 systems. 



Now , if the eye has attained its maximum development 

 in Man, the same must be said of the ear in the Apes, of 

 the nose in the Bears, of the tongue in the Carnivora, and 

 of the skin in the Seals. 



Having so disposed of these, the only remaining 

 Thricozoa are the Bats, Shrews, Moles, Marsupials, Sloths, 

 and Rodentia. 



In common parlance we compare the Bats with the 



