2/4 OX THE FOSSIL BONES OV PACHYDERMATOUS QUADRUPEDS. 



Iset *, which have yielded these fossils in the largest quantities f . 

 The two last- mentioned rivers, descending the eastern slope of the 

 Ouralian mountains, frequently exhibit these bones mixed with 

 marine productions J. 



M. Pallas has observed them near the Iset, mixed with glossopetrae 

 and pyrites §, and under different beds of clay, sand, ochre, &c, and 

 at Verkhotouria, near the source of the Toura ||, where Steller had 

 previously found some also mingled with petrified sharks' teeth and 

 belemnites %. Some have also been disengaged along the Irtisch in a 

 pure sand, mixed with shells **. 



Strahlenberg speaks of an entire head of four feet and a half long, 

 found at Toumen on the Toura ft. The Tom, another tributary of the 

 Obi, has yielded them in large quantities ++> a s has also the Keta§§. 



An entire skeleton has been seen by Messerschmidt, on the banks 

 of the former river, between Tomsk and Kafnetsko ||||. 



In fine, they are found even on theAlei, and at the foot of the 

 mountains so rich in mines, from which many of the branches of the 

 Obi take their rise. M. Pallas assures us that he has a tooth found 

 in a mine of the famous mountain of Serpents, which was accompanied 

 by pentacrinos, one of the ancient productions of the sea ^f^f. 



The bason of the Jenisei has yielded them at all periods ***, at 

 Krasnojarsk, from which M. Pallas had a molar fft. aD -d as far as the 

 seventieth degree of northern latitude below Selakino, that is, bor- 

 dering on the Frozen Ocean. This naturalist also specifies the Angara, 

 otherwise called the Great Tongouska, among the rivers that have dis- 

 engaged them J J J. 



Messerschmidt and Pallas also mention the Chatanga, a river which 

 falls into the Frozen Ocean, between the Jenisei and the Lena §§§. 



Isbrand Ides and John Bernard Muller || || || specify the Irkoutsk 

 on the Lena ; and the academy of Petersburg preserves a skull found 

 with an almost perfect skeleton near the mouth of that river *$%% 



The Vilioui, which falls into the Lena, on the banks of which the 

 entire rhinoceros was found, is most assuredly not unsup plied with the 

 bones of elephants. 



* Messerschmidt in Breynius, Phil. Trans., vol. xl, p. 148. 

 -J- Travels, vol. iv, p, 97 and 124. 

 X Nov. Com. vol. xvii, p. 581. 

 § Ibid., and Travels, vol. iii, p. 353. 

 || Travels, p. 324. 

 \ Nov. Com., vol. xiii, p. 476. 

 ** Idem, ibid, 

 -f-f Strahlenberg, p. 404. 



XX Pallas and Messerschmidt, in the passage cited. 

 §§ Isbrand Ides in Sloane, passage cited, p. 437- 

 llll Strahlenberg, p. 404. 

 ^f«[f Nov. Com. 



***• Isbrand Ides, Pallas' Nov. Com., vol. xiii, p. 471. Laur., Lange, and Muller 

 on Sloane. 



•fft Travels, p. 170, and Nov. Com., vol. xvii, p. 584. 



XXX Nov. Com., vol. xiii, p. 471. 



§§§ Idem, ibid. 



|| || || In Sloane, passage already quoted. 



TO Pallas' Nov. Com., vol. xiii, p. 472. 



