IIOLIIES] 



ABORIGINAL AMERICAN ANTIQUITIES PART I 



333 



rejectage, as in the chipping arts, records the various operations with 

 accuracy if not with entire fulhiess. 



Examples of impkMuents reduced to approximate form by pecking 

 are illustrated in figures 190 and 191. The specimen shown in 

 figure 187 is an incipient grooved ax. The general form is well 

 developed, bnt the groove has not been commenced. The specimen 

 shown in h, originally a water-worn boAvlder, was specialized in the 

 rough by pecking, the blade and the groove being well advanced and 

 icady for the polishing tool. 



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I'-k;. 1!»0. Stoin 



)f iii;iiiur:ic(ni-e by iKX'kiiij; ( crumbliug) wilii lianiiiuT^ 

 .sloiics. 



The Potomac Valley, a field studied in much detad l)y the writer, 

 all'ords [)lentiful evidence bearing on the practice of 

 |-.'i','.'('J|"i.''''"' '^^""" the crumbling processes as applied to the manufac- 

 ture of stone implements. Here a favorite variety of 

 stone for the manufacture of celts and axes was a compact, greenish- 

 gray trai) or traplike contact rock, occurring originally in the high- 

 land of Maryland and Virginia, bnt obtained by the aborigines very 

 largely fnmi the bowlder beds deposited by the rivers near their exit 

 from the highland, or at other points higher up the streams where 



