144 ELEPHANT REMAINS IN CANADA. 



tooth ; but he does not state on what scale it is drawn. The 

 length of this latter figure is three and a half inches and one and 

 a half in width. Assuming this to be half the natural size, the 

 length would be seven inches and the width three. There 

 appear to be fifteen plates, including four at one end which are 

 represented by irregular rows of digitations, more or less worn. 

 This would give an average of a little less than half an inch to each 

 plate, thus agreeing exactly with the Canadian molar. 



The tusk described by Mr. Briggs differs from our specimens in 

 being less curved ; but this is a character upon which a great 

 deal of reliance cannot be placed. The tusks of all the species of 

 elephants vary to a considerable extent, not only in the amount of 

 their curvature but in their size. Three tusks have been lately 

 procured from the Youcon river, in Arctic America, by B. R. 

 Ross, Esq. Two of these are curved, but the third is nearly 

 straight, The characters of the molars seem to be more perma- 

 nent. 



At Zanesville, in Ohio, there was found, in 1852, the skeleton 

 of an enormous elephant, having the tusks and the four molar 

 preserved. 



These were described by Prof. J. Wyman, in the Proceedings 

 of the American Association, published in 1857. 



" The following are the dimensions of the right and left upper molars 

 in inches : — < 



Right. Left. 



Greatest length 14? 13£ 



Greatest height when resting on the ground. 10 £ 11 



Length of grinding surface. 8§ 9 



Breadth of " " 4£ 4i 



Whole number of plates 29 30 



Plates of grinding surface 18 18 



The dimensions of the molars of the lower jaw are as follows : 



Right. Left. 



Whole length 14i 15 



Length of grinding surface 9 8f 



Breadth " " H 3J 



Whole number of plates 24 25 



Plates of grinding surface IT l? 



Comparing the average width of the plates of the grinding or 

 worn surfaces of the above four molars with that of the Canadian 

 specimen, and also with that of E. Jacksoni, as figured by Foster 



