122 



STONE IMPLEMENTS 



lETlI, ANN. 15 



Another s])cciiiit'ii (illustniti'd in li, h, \)hi\e i.xxxA'i) is of grcciiish- 

 gray slaty-looking eruptivi- rock, very slif;lilly altered by cheiiiical 

 changes. It is rather rudely (•liii)i)ed along both sides, and the point 

 has been made quite sharp by grinding. I'roiierly hafted as a ])ick, or 

 as a chisel to be driven by a mallet, tiiis little celt would have been a 

 very effective tool iu shaping and trimming the vessels. As it stands, 

 without hafting, it is too small for effective use. A small chisel from 

 the southern hill is given in t;r in the same jdate. 



From the soil tiuit filled one of the shallow pits on the southern 

 margin of the crest of the hill, a chipped tool of unusual shaj)e, given 

 in «,«, ])late LXXXVII, was obtained. It resembles somewhat the drills 

 or perforators of the same material found on village-sites, but is larger, 

 ruder, and less symmetrical, and was probably made especially for use 

 in the trimming of soapstoue vessels. 



Fio. 22 — Rude pick maile by sb.iriienin,;; <]iiiirt/.itc bdwldiT. 



Another is made of a Itlackish argillite like rock that has become 

 gray ou the surface through oxidation of sonu^ of its constituent min- 

 erals. In its general eonliguration it is somewhat like the quartzite 

 blades produced in the (luarry-shops of the district, but it dilVers from 

 them in having a chisel-like jioiiit or edge. This edge is somewhat 

 oblique andshowsbut little evidence of use, although chemical changes 

 iu the stone may have obliterated such evidence. It is shown in l>,h, 

 plate LXXXVII. 



A (piite perfect specimen of this class, having a well-rounded body 

 and neat, sharp edge, was picked up on the southern hill; it is shown 

 in fl,d. A much larger example of the same class was brought to light 

 by the grading operations along Connecticut avenue, on the eastern 



