/OOLOGY. 0-11 



ment of animals. The Mouse-like species stand off from 

 the rest, and then follow the entirely different Ungulata 

 with the Pigs and Ruminants, which once again diverge 

 in like manner, and make room for the development of 

 the Seals, which then proceed through the Dogs, &c., in 

 a less interrupted series up to Man. 



He who marvels at this, let him take and set the table 

 of the class-series before his eyes, and he must give utter- 

 ance with us to the following words namely, that the 

 lower animals diverge or turn aside, and the entirely dif- 

 ferent Fishes, Reptiles, and Birds follow, which, once 

 again diverging, make room for the development of the 

 Thricozoa, or, in other words, the " Compendium Ani- 

 malium." A perfect parallelism is thus found to exist 

 between the classes of animals generally and the families 

 of Thricozoa ; but no linear or continuously progressive 

 connexion is discoverable between one set and the other, 

 but an appearance by fits or starts of new forms, just as 

 the systems and organs also are not gradually evolved 

 metamorphoses of one system, but sudden productions 

 " en avant " with new tissues, forms, and functions. The 

 animal system is a multifariously-constructed temple, 

 with its nave, choir, chapels, and towers, while these again 

 are present with the whole diversity of forms, which 

 belongs to them in their several characters or bearings. 



A. SPLANCHNO-THRICOZOA PFOTENTHIERE, MAUSARTIGE. 



3564. Small animals with irregular set of teeth ; four 

 feet with claws. The regular set of teeth has included 

 all kinds of teeth, and with them four or six incisors. 



A set of teeth is irregular, which has more or less than 

 the ordinary number of incisors, in which moreover one 

 or the other kind of tooth is wanting, or if it is separated 

 by a breach or interspace. 



The small Thricozoa divide into three orders. 



The one have blunt uniform molars, two rodent or 

 gnawing-teeth, and no canines Rodentia. 



The others have, one might say, a wholly aberrant and 

 confused dental formula, there being at one time too few, 



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