MR. W. G. CLARKE ON NEOLITHIC MAN IN THETFORD DISTRICT. 35 
same well-known type, though of all, it needs but a glance to show 
that they were designed by true artists. One, however, of mottled 
grey Hint, 2 by 2,’., and II- inches at the base, deserves more than 
passing mention. It is hollow-backed, and the only chipping truly 
on the top surface is a strongly-marked ridge, running straight in 
the centre, the other chipping being around the edge. This ridge 
is § inch high, and the chipping is perpendicular to the front 
edge, whilst the slope from the ridge to the sides is one of 00°. 
This makes a perpendicular face at the end of the implement, 
U inches in length, with the sides of the triangle 1 inch. Type 5 b 
is very common indeed at Thetford, and has nothing exceptional to 
make it worthy of note. 
Smootiiing-stone. — I have one smoothing-stone, found on 
Thetford Warren, which, although not partaking of the form of the 
Scotch specimens, can undoubtedly be referred to this type. It is 
in the shape of a triangle, the base being 1,1 inches in length, and 
the sides exactly 2 inches. The base has merely been flaked off, 
but the sides have been rubbed smooth, and slope down at an angle 
of G()°, which would thus enable each side to be used as a plane 
alternately. It is of a peculiar opaque mottled yellow flint. 
Miscellaneous Implements. — Of miscellaneous implements, 
two I think can be classed as the lland-borers of Dr. Plowright 
(Trans. Norfolk and Norwich Nat. Soc. vol. v. p. 250). One from 
Santon Warren is -l. 1 , inches in length, and 1 inch in height, whilst 
in the middle a stem 2 inches in width projects 2 inches. The 
other is from Grimes’ Graves, and is a stouter implement, being 
5 inches in length, 2 inches in width, and 2 inches in height at 
the base, gradually sloping down to a narrow point. Two others 
are wedge-shaped hand-diggers, one from a stoneheap at Euston, 
Suffolk, the other from Santon Warren. Measurements are 
Length 31, inches, width 3 inches, the point of the triangle being 
about 90° ; and length 2f inches, width 21- inches, the angle at the 
point about the same as the other. A discoidal-shaped implement 
is chipped equally on both sides, and would probably be used as a 
throwing weapon. Its length is 2j inches, width 2 inches, and 
thickness in the centre i inch. A peculiar type is that with a 
small rectangular face projecting at the end. In three specimens 
this face is §, |, and $ inch in length, and is perfectly straight. 
Another peculiar specimen is roughly triangular, the sides being 
