294 ON THE trOSSIL BONES OF PACHTDJJRMATOUb QUADRUPEDS. 



A Coniparative Table of the Fossil Molares, 



Fossil Grinders. 



Total 



Number 



of 



Plates. 



Upper. 



Origin unknown ; belong- 

 ing to the Old Academy of 

 Sciences 



From the Museum of Pisa 



From Fovent; very young, 

 and very much worn vii. 



Lower. 

 From the Ourcq Canal . . 



Origin unknown ; white, 

 earthy, broken in two places .. 



Probably from Siberia ; 

 brown, very little altered, of a 

 blackish tint 



From Fovent; yellow, earthy, 

 four broken behind xix. 



Probably from Siberia ; ting- 

 ed black xviir. 



From a lower jaw found 

 near Cologne xviii. 



Found at Villebertin, in a 

 gravel bank ; preserved in the 

 Museum of M. Petit Radel. . 



Number 



of 



Plates 



Worn. 



12 



22 

 12 



11 



15 

 18 

 13 



Total 

 Length. 



Length 

 of the 

 Plate 

 Worn. 



Width. 



0,183 



0,138 



0,055 



0,183 



0,138 



0,055 



0,245 0,247 



0,265 



0,250 



0,230 

 0,178 

 0,230 



0,100 



0,065 



0,035 



0,142 



0,160 



0,190 

 0,178 

 0,180 



14 0,275 0,!76 0,094 



0,089 

 0,085 



0,070 



0,080 

 0,088 



0,075 



