292 ON THE FOSSIL BONES OF PACHYDERMATOUS QUADRUPEDS. 



A Comparative Table of the Fossil Molares 



Fossil Grinders. 



Upper. 



From Siberia; brown plates 

 separated but not much de- 

 decayed. Daub., No. 1023.. . 



From the banks of the Mis- 

 sissippi, bought in New Or- 

 leans, by M. Martel 



From the United States, pre- 

 presented by Mr. Jefferson. . 

 1 Idem 



Origin not known ; yel- 

 lowish, slightly impaired. . . . 



From Siberia ; brown and 

 blackish, several plates want- 

 ing in the front, and at the 

 back 



From Siberia ; very much 

 impaired in its cement, some 

 plates wanting, Daub., No. 

 1022 



Origin unknown ; white, 

 decayed, one plate missing at 

 the back 



Origin unknown ; very 

 much impaired, white, quite 

 worn down 



From Toulouse ; voxy much 

 altered, white, quite worn .... 



From Fovent ; altered' yel- 

 low, quite worn 



Total 



Number 



of 

 Plates. 



XXII. 



XXII. 



XVI. 



Number 



of 

 Plates 

 Worn. 



11 



13 



18 

 9 



16 

 12 



14 



15 



12 



Total 

 Length. 



0,260 



0,210 



0.175 

 0,260 



0,200 



Length, 

 of the 

 Plates 

 Worn. 



0,185 



0,165 



0,095 

 0,085 



0,135 



0,125 



0,165 

 0,110 



0,165 



0,110 



0,165 



0,165 



0,165 



Width. 



0,095 



0,085 



0,047 



0,080 

 0,085 



0,081 



0,080 



0,089 



0,075 



0,084 



0,050 



0,035 I 0,037 



