118 Megatherium of Georgia. 



and therefore concluded that they had occupied correspond- 

 ing situations in opposite sides of the jaw. Both are broken 

 in two across, and consist of the crown and part of the body 

 as far down as below the commencement of the internal 

 pyramidal cavity. The longer of the two is about four 

 inches, the other somewhat less. On trying the first of these, 

 it was found to fit with great exactness into the socket of 

 which part remains in B, and part in C, that is, the socket of 

 the first molar. This, it may be observed, corroborates the 

 approximation of these two fragments. Its form also showed 

 this to have been its place; its diameter in the direction of its 

 cutting edges being less than the contrary diameter, and its 

 being narrowed anteriorly, proved its situation to have been 

 in the thinner and more tapering part of the maxillary bone. 



The second molar of the same, that is, the right side re- 

 mained in its socket as already mentioned. It is remarkable 

 for its rhomboidal form, the diagonal through its left anterior 

 internal, and right posterior external angle, being the greatest. 



The remaining two teeth appeared to belong to the left 

 side of the same jaw. One of them I conjectured to be the 

 third; 1st, from its fitting into a part of this socket re- 

 maining in D ; and 2dly, from its form, which shows the 

 passage between the rhomboidal figure of the second molar, 

 and the flattened shape of that which I suppose to be the 

 fourth. This last is more flattened, that is, broader in the 

 direction of its cutting edges than any of the others ; and from 

 this, as well as from its agreeing with the form of the fourth 

 socket partly remaining in D, I have referred it hither. Tbis 

 tooth may however have belonged to the upper jaw. 



Comparison with the Megatherium. 



Skeleton of Madrid. Bones from Georgia. 



The lower jaw is of a A considerable part of this 

 tolerably regular figure, if we remarkable elongation re- 



