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HUTTONIAN THEORY. 



471 



heth 



fical impoffibility is involved ^ though 

 it is a probable folution of the difficulty concern- 

 ing the origin of thefe animal remains, can only 

 be judged of from other circumftances. 



414. If we confider attentively the fads that re- 

 fped the Siberian foffil bones, there will appear 



furmountable objed 

 fuppofes 



be 



to every theory that 

 and to have been 

 brought into their prefent fituation from a di- 

 flant country. 



The extent of the trad through which thefe 

 bones are fcattered, is a circumilance truly won- 

 derful. Pallas allures us *, that there is not a 

 river of conliderable fize in all the north of Alia, 

 from the Tanais, which runs into the Black Sea, 

 to the Anadyr, which falls into the Gulf of 

 Kamtchatka, in the fides or bottom of which 

 bones of elephants and other large animals have 

 not been found. This is efpecially the cafe 

 where the rivers run in plains through gravel, 

 fand, clay, &c. ; among the mountains, the bones 

 are rarely difcovered. The extent of the tract 

 juft mentioned exceeds four thoufand miles ; and 

 how the bones could be diftributed over all that 

 extent, by any means but by the animals having 



Gg4 



lived 



t' 



* De Reliquiis Animalium exotlcorum, per A flam 

 Borealem reperds. — Nov. Comment. Petrop. torn. xvii. 

 (1772) p, 576. 



