386 



COLUMBIAN HISTORICAL EXPOSITION AT MADRID. 



argillite specimens of the same size and form as the Trenton objects 

 upon the surface at most of the Delaware river village sites. I have 

 found duplicates of the Teuton forms with pottery and net sinkers at 

 Lower Blacks Eddy, Eidges Island, Gilmers Island, Gallows Eun, Frys 

 Eun, and Upper Blacks Eddy and on the hilltop at Hickory Eun fifteen 

 of them at a workshop site strewn with hammer stones, argillite chips, 

 jasper flakes, three thinned down blade fragments, and a spear head 

 of argillite. 



Fig. 15. 



RUDELY CHIPPED FORMS OF ARGILLITE. 



Quarried and blocked out by Indians inhabiting the Delaware Valley in comparatively recent times. Thirty-two of 110 found in shaft 

 &quot;A&quot; in Indian argillite quarries, Gaddis Run, May, 1893. 



This last site is close to the chief outcrop of argillite on the right 

 bank of the Delaware above Trenton. While this paper was preparing, 

 the writer discovered, May 22, 1893, close by the mouth of Gaddis Euu, 

 and one-fourth of a mile from the river, nineteen ancient pits sur 

 rounded by heaps of argillite refuse. There were at least twelve work 

 shops where u turtle backs&quot; were found with the chips and pebble 

 hammers. A trench 25 feet by 12, and 7. feet deep across one of the 

 heaps and pits yielded 111 &quot;turtle backs&quot; and 77 hammer stones. 

 Another about 15 feet by 10 and 2 deep, 60 &quot; turtle backs&quot; and 13 

 Lammer stones (fig. 15). All the work had been done by compara 

 tively modern Indians. 



