MOUND-BUILDERS AND PLATYCNEMISM IN MICHIGAN. 383 



my brief labors, it would appear that the more valued relics of the " mound- 

 builders" have been here deposited in unusual abundance. Highly- 

 wrought stone implements, many of them being of uncommonly skillful 

 w^orkmanship, are frequently encountered. These consist of axes, chisels, 

 fleshing-tools, sinkers, spear-points, arrow-heads, &c., formed of a great 

 variety of stone, such as diorite, sienite, greenstone, shale, and chert, 

 many of them being finely polished. 



One of the handsomest stone-axes I have seen was taken out at this 

 place. It is made from sienite, a favorite material for this implement, 

 and the handicraft displayed in its construction is of high order. An- 

 other ax, of diorite, is exquisitely polished. 



Tig. 10 



Stone im.pl6raeni;, 



-Bfeaver Harboi Mbxmd, Michigan. 

 Pull size. 



Sections at tlae tliree grooves, c-d, a-T^, and e-f. 



The implement [Fig. 10] found here, and presumed to be a sinker, I 

 have thought it worth while forwarding a sketch of. The grooves shown 

 at its middle and at each extremity, though shallow, are distinctly 

 marked, and the entire implement is elegantly finished ; apparently too 

 much so by far for the purpose for which it is supposed to have been 

 designed. It is made from a grayish shale, and is slightly polished. 



Another stone implement from those mounds is the large circular 

 upper stone of the utensil conjectured to have been employed for grind- 

 ing the grain used as food. This stone, which is also of sienite, is finely 

 worked, being much smoother on one side than on the other. It is 

 possible it may have been employed for another j)urpose than that 

 suggested. 



Immense amounts of the fragments of pottery of the usual description 

 and patterns (the well-known cord-pattern being frequent) are found here 



