20O 



To the River Plate and Back 



the object. 'I am able unqualifiedly to affirm that 

 this piece of pottery, for such it appears to me to be, 

 is imbedded in the matrix, and has not been disturbed 

 by the hands of man . ' " Good ! ' ' replied my companion , 

 ' I am glad to have had you with me, and to have had 



Fig. 17 Mylodon robustus Owen. , nat. size. (After Owen.) 



you see the thing in situ. Years ago I was digging up 

 the bones of a Scelidotherium, and, as I was doing so, I 

 came upon a flint arrowhead buried in the soil along- 

 side of the bones. I took the flint with the bones to 

 Burmeister, who was then the Director of the Museum 

 at Buenos Aires, and under whom I was working. I 



