68 



long period of time to have elapsed since they 

 existed, but that these extraordinary incrus- 

 tations were effected in some sudden revoki- 

 tions, and that they must have lived and pro- 

 pagated a period of time before those events. 

 And it is evident that there have been succes- 

 sive revolutions or changes of this kind, by 

 the repetition of similar strata, at various 

 depths, with regular intermediate soils. I 

 shall here introduce a proof, connected v/ith 

 our subject, and otherwise interesting. Be- 

 sides the skeletons with carnivorous teeth^ 

 found in New- York and elsewhere in AmiCrica, 

 there have been found in Kentucky several 

 very large graminivorous teeth, never known 

 to be accompanied with any other parts (un- 

 less perhaps tl^e tusks), and always much de- 

 cayed. They appear to me exactly like those 

 found in Siberia -, and I have no hesitation in 

 attributing them to a more remote age than 

 that in which the Mammoth lived, unless we 

 suppose the bones of the Mammoth to be of 

 a more dense nature and less liable to decay : 

 that they are astonishingly dense is sufficiently 

 obvious from some few specimens^ but I can 

 scarcely imagine the others to have been so 



