e. Specimens ending in a very sharp point, generally 

 of considerable thickness, and with a rather 

 iri'egularly worked Indical face. 



g. Rounded at one end. 



II. Two-ridged specimens. In this specimen the 

 median ridge has been removed by striking off 

 a longitudinal flake, and, instead of one, there 

 are now two longitudinal ridges. 



h. Flat and rounded at one end. 



i. Flat and pointed at one end. 



k. Flat and rounded, but having both the longitudi- 

 nal peculiarly curved. 



1. Rather thick and rounded at one end. 



G. CONCAVE SCRAPERS. 



This group includes all those specimens with one or 

 more concave edges. If tvs^o edges are concave, they are 

 separated by a most peculiar tongue or bill-shaped pro- 

 t^uberance. which is sometimes pointed ; sometimes rounded. 



a. One concave edge only. 



b. Two concave edges; protuberance rather long, 



rounded at the end. (JDuck-biUs). 



c. Two concave edges; protuberance short pointed- 



d. Protuberance short, broad and rounded, not well 



set-off against the edges. 



e. Triangular implements, with broad butt-end, and 



two concave longitudinal edges. (^Langueg- 

 de-chat). 



H. COMBINATIO'N IMPLEMENTS. 



In this kind of implements one edge has been used as 

 a knife or chopper, while the one or two more have served 

 as hollow scrapers. 



I. IMPLEMENTS, DOUBLE-EDGED. 



In these the traces of use are on one edge restricted 

 to the Indical, on the other to the PoUical face. 



K. RECHIPPED IMPLEMENTS. 



Specimens which, after having been vised and rejected, 

 have been picked up by a later generation, with a view of 

 using them again. 



