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476 



ILLUSTRATIONS OF THE 



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winter of the high latitudes. The dominion 

 of man, by rendering fuch migration to the 

 larger animals difficult or impoffible, mull have 

 greatly changed the economy of all thofe tribes, 

 and narrowed the circle of their enjoyments and 

 exiltence. The heaps in which the foffil bones 

 p.ppear to be accumulated in particular places, 

 efpecially In North America, have a great ap- 



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pearance of being conneded with the migrations 

 of animals, and the accidents that might bring 

 multitudes of them into the fame fpot. 



* 



What holds of Siberia and of North America, 



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is applicable, afortiori^ to all the other places 

 where animal remains are found in the fame con- 



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 r 



dition. Thus we are carried back to a time 

 •when many larger fpecies of animals, now en- 

 tirely extindt, inhabited the earth, and when 

 yarieties of thofe that are at prefent confined to 

 particular fituations, were, either by the liberty 

 of migration, or by their natural conftitution, ac- 

 commodated to all the diverfities of climate. This 

 period, though beyond the limits of ordinary 

 chronology, is pofterior to the great revolutions 

 on the earth's furface, and the lateil among 



geological epochas. 



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