In a former paper (Proceedings, Vol. II., Pt. IV.), a description was given of some lumps and cores from Windmill Hill, Avebury, with a few comparisons from Grime's Graves, Norfolk. Among the cores, the tortoise variety, both ideal and in its modified forms, is abundantly in evidence. Fig. 27 comes under the former category, and was, perhaps, also held in the fingers for use as a chopper. The facet whence the desired flake was taken is evident enough.

Fig. 28 is a thick and coarser variety, and is commoner. It, has a useful flake removed (left-hand figure), and an obtuse edge, capable of use. Allied to the last-named is the cube type, represented by Fig. 29. Sometines, as in Fig. 30, the flake was taken off the more convex face. In this instance it was one of the small leaf-shaped and sub-triangular kind so common on Windmill Hill, also produced in larger size and numerously at Avebury Down and Grime's Graves.