194 Wisconsin Academy of Sciences, Arts, and Letters. 



^^^- '^- in'this mound, presents on 



its anterior surface a per- 

 foration, which is sur- 

 rounded by a gradually 

 receding margin, which is 

 not so great as that sur- 

 rounding the perforation 

 on the opposite or poste- 

 rior surface, of the same 

 bone. In the human sub- 

 ject, the anterior surface 

 of the inferior extremity 

 of the humerus presents 

 a ridge of bones, which 

 separates the coronal and 

 radial depressions. 



This bone is, no doubt, 

 of great antiquity and -was 

 very much decayed, the 

 superior extremity having 

 disappeared. In no case 

 did I find any of the long 

 bones of the extremities 

 wholly perfect, but all of 

 them were broken near 

 the center of the shaft, the 

 other extremity not being 

 found. It is hardly prob- 

 able that this is due to decay, in every instance, but it may point 

 to some superstitious rite or custom, connected with the sepulture 

 of the dead, among the ancient Mound-builders. 



This was the only humerus found, with either extremity nearly 

 perfect. 



The shafts of two tibias, found in this mound presented another 

 characteristic of the Mound-builder. They were both remark- 

 ably flat, and this peculiarity is termed Platycnemism. In the 

 Smithsonian Annual Eeport of 1878, Mr. H. Oilman, of Michi- 



