30 MR. W. G. CLARKE ON NEOLITHIC MAN IN THETFORI) DISTRICT. 
both edges. Another of the same type, though from its more 
bulky nature we must designate it a borer, is 1|- inches long from 
point to base, and only one inch from the base to the right-hand 
top edge, the point on the left reaching an extra half-inch. A borer 
which would be taken for a leaf-shaped arrowhead, were it not for 
its bulk, is 1| inches in length, and f inch in width, the under 
surface being Hat, whilst the top slopes down from ] inch in thick- 
ness to the point. Awls were chiefly used for piercing holes in 
skins, through which sinews could be passed for keeping the clothing 
together. 
Cores. — Cores or nuclei are the hearts of flint that remain after 
the knappers have chipped off all the flakes possible, or all that 
they require. In places where flint is scarce, and where the 
unworked blocks had to be transport ed, the cores are very small 
indeed, being used up to the last possible degree ; but in the 
Thetford district, Avhere there was no lack of material, the knappers 
showed a reckless prodigality in their work, for many of the cores 
they threw away would have been flaked in other parts over and 
over again. One from Grimes’ Graves is 4 inches long, 3| inches 
broad, and 2 inches high, whilst the measurements of one from 
Santon Warren are 4 j- inches in length, 3 inches wide, and 
H inches high. I have also many other bulky ones from the 
neighbourhood. In contrast to these, small ones are often found, 
which are by many supposed to have been used as slingstones. 
Be that as it may, that they were originally cores no one can 
doubt. Of three small ones, the bases measure 1-| by 2 inches, 
14 by 2 inches, 1-| by 1|- inches; and the heights 1-J-, 1£, and 
1 inch respectively. 
Chisels and Fabricators. — Chisels have been divided into a 
great many varieties, but I have only found broad and narrow in 
this district. The broad ones of blue flint bear a most striking 
resemblance to the white flint ones of the South Downs. A typical 
specimen is 2j inches in length and 2 inches in width, the rounded 
cutting edge, however, not being more than an inch in length. One 
specimen of a narrow chisel that I have is 2^ inches in length, 
whilst one inch from the base it is 14 inches in width, gradually 
tapering down until the working edge is not more than a quarter of 
an inch long. Fabricators or flaking tools are one of the scarcest 
type of implement, but some of them show exceeding beauty. 
