A STUDY OF PREHISTOEIC ANTHROPOLOGY. 



637 



ARROW OR SPEAR-HEADS, OR KNIVES. 



These are of almost every form, material, and size. With but slight 

 differences in these qualities, they are found all over the United States, 

 and are substantially the same as those of the prehistoric ages in 

 all parts of the world. Their various uses, as indicated in the title, 

 are not known with certaintv in all cases. Their difference in size 



Fig. 11. 



Aruow-heads. 



Different forms, from various localities in the United States. 



seems to have indicated the difference in name. Except for this the 

 same implement might have served as either arrow or spear-head 

 or knife. A tang indicates attachment to a shaft or handle, and this, 

 if found, would determine its purjiose. Instances of this attachment 

 occur on the Pacific slope, but in the eastern half of the United States 

 specimens bearing such evidence are practically unknown. They might 

 bave been fastened with a cord, or with some adhesive substance. 



