11 
chipping is more full developed on the other flints found in the 
Cavern. Clearly this is not so ; examine the most typical flake 
of the few on the board, that at the extreme left corner of the 
second row from the top, and it will be seen that the three 
facets on its right side run completely out to the edge of the 
flake, and are untouched by secondary chipping. The edges of 
this flake must have been very delicate and sharp when it was 
first severed from the natural nodule ; they are in a few places 
slightly indented and jagged, but this must have occurred if it 
had been carried onward with other stones, and battered in a 
mountain stream ; yet these minute notches, and the slightly 
water-worn butt end, are said to be indications of use and wear. 
I have fully met and examined this kind of evidence in my 
former paper.* 
I may, however, observe here that the effect of cutting or 
scraping ordinary substances with a sharp stone would 
obviously be to round and smooth the edge rather than to 
jag it j and, in fact, Mr. Evans gives us numerous instances 
of this undoubted evidence of wear by use : he says : “Among 
some hundreds of scrapers, principally from the Yorkshire 
Wolds, I have met with between twenty and thirty which 
show decided marks of being worn away along the circular 
edge by friction. In some, the edge is only worn away suffi- 
ciently to remove all keenness or asperity, and to make it 
feel smooth to the touch, and this perhaps along one part 
only of the arc ; in others the whole edge is completely 
rounded, and many of the small facets by which it was ori- 
ginally surrounded entirely effaced.”f 
With regard to the evidence of human manufacture which 
flint-knives should present, Sir Charles Lyell quotes Mr. Evans, 
who says “that there is a uniformity of shape, a correctness 
of outline, and a sharpness about the cutting edges and 
points, which cannot be due to anything but design/ 5 J We 
desire no better rule than this by which to test the claims 
of the whole of these Brixham flints to be implements and 
knives. It is obvious from the general view which the photo- 
graph gives, that the flints present no such uniformity of 
shape, no such correctness of outline, or sharpness about the 
cutting edges and points, as would, in accordance with this 
test, justify the inference that fifteen flints selected from the 
whole can be said to be manufactured knives. 
* Transactions Victoria Institute, vol. viii. p. 220. 
+ Ancient Stone Implements, pp. 279, 280. 
X Antiquity of Man, lsted., p. 117. 
