35 



Hitachi and is now kept in the Anthropological Institute of the Imperial 

 University, Tokyo. The spear head is made of bone, Such implement 

 of the same pattern is found from many shell mounds. Thus anthropo- 

 logists were enabled by that discovery to know the use of the implement. 

 The piece of bone is the coalesced frontals. It measures 8 cm. in 

 length, 6 cm. in breadth and 2 cm. in thickness. On comparing this 

 bone with the skeletons of my collection, we find that the bone would 

 have belonged to a fish about one metre in length, i. e. a fish of the 



B 



A 



A. Coalesced frontals with a 



broken spear head, stuck in them, 



found from a shell mound. Natural 

 size. 



K. A spear head, made of bone, 



quite similar to the broken one, 



stuck in the coalesced frontals. 



Natural size. 



