GLACIAL MAN LN THE TRENTON GRAVELS. 33 



fifty feet in height. These shops, therefore, represent the most 

 modern phases of aboriginal industry, and may have been occu- 

 pied at the coming of William Penn. The second point is that 

 every type of flaked argillite found in the Trenton region, asso- 

 ciated with the gravels or otherwise, is found'on this site. It 

 was to a certain extent a quarry site, for the great masses of 

 argillite brought down by the floods were here broken up and 

 removed from the river banks or bed. It was a shop site, for 

 here the articles, mainly blades, were roughed out, and it was 

 also a dwelling place — a village site — where all the specialized 

 forms of flaked stones made from the blades were prepared for 

 use. Here are found great numbers of the rude failures, dupli- 

 cating every feature of the mysterious " paleolith " with which 

 our museums are stocked, and exhibiting the same masterly 

 quitting at just the point " where no further shaping was pos- 

 sible." ^ Here we see the same boldly manipulated " cutting 

 edge," the " flat bottom " and " high peak," and the same mys- 

 teriously weathered and disintegrated surfaces, so skillfully 

 made, by a nice balancing of accidents,^ to tell the story of 

 chronologic sequence in deposition. 



Beside the failures, we have here, as on other quarry shop 

 sites, the evidence of more advanced work, the wide, thick, 

 defective blades, and many of the long, thin blades broken at or 

 near the finishing point. Here, too, just back of the roughing- 

 out shops, are the dwelling sites from which many specialized 

 forms are obtained. The " Eskimo " type is fully represented 

 as well as the ordinary spear point, the arrow point, and the 

 perforator of our Indian. There is not a type of flaked argillite 

 known in the Delaware valley that may not be duplicated here 

 on this modern Indian site, and this has been known by local 

 archeologists for years. Why so little has been said about the 

 matter is thus explained. Dr. Abbott, in 1890, discovering this 

 site, and finding " typical paleolithic implements " (the ordinary 

 ruder forms of rejects) among the refuse, was so entirely at a 



'Abbott, C. C. Smithsonian Report, 1875, p. 248. 

 ^ Iliid. Primitive Industry, p. 487. 



