EXPLANATION OF PLATE L 

 Flaked Cobblkstones. 



1 (One-lialf actuiil size.) 



Nos. 1-7. Two and three-faceted stones of average size. The points subjected to 

 blows are indicated by the letters a h c d, the order supposed for successive strokes 

 in each case. No. 4 presents a second facet on its opposite surface. No. 8. Partly 

 restored five-faceted stone; stone reduced to flakage. 



1. t^tone subjected to blows at two points, a aud b ; flaking at each. 



2. Stone subjected to blows at three points, a h c; flaking at a and c ; the mark of 



a blow at h without flaking. 



3. Stone subjected to blows at four points, abed; flaking at a and d; marks of 



blows at h and c without flaking. 



4. Stone subjected to blows al, four points, abed; c and d irregularly placed; 



flaking at a and b; flake at b running out on the opposite surface; marks of 

 blows at c without flaking; marks of blows for some distance along the cir- 

 cumference at d, but without flaking. 



5. Stone subjected to blows at three points, ab c ; yielding flakes of fair size in each 



case; c last flake, running out on previously flaked surface; an example of the 

 inner flakes of the refuse; the remnant of the cobblestone is worn smooth and 

 striated on the flaked surface. 



6. Stone subjected to blows at three points, flaking in each case. 



7. Stone flaked at three points; irregu.lar surface of fracture. 



8. Stone subjected to blows at five points, a' b' and a b c ; flaking at all points; stone 



reduced to flakage; relative order of a b c that of the letters; c probably 

 last blow, yielding a faceted inner flake like c of No. 5 aud destroying the 

 stone; a' b' small flakes running out on the opposite surface and possibly 

 attempts at flaking previous to a & c. 



