The next specimen (Fig. 18) is from Burwell Fen, Cambridge, and |73| is in my own collection. It is of beautiful workmanship, most skilfully and symmetrically chipped, and thinner than is usual with implements of this class. The edge is perfectly regular, and has been formed by delicate secondary chipping. So sharp is it, that I should almost doubt its ever having been intended to be ground or polished. That a sufficient edge for cutting purposes could be obtained by careful chipping without grinding, seems to be evinced by the fact that some stone celts, the whole body of which has been polished, are found with the edge merely chipped and not ground. No doubt when these blades were new, they were polished all over; but as the edge became broken away by wear, it would appear as if the owners had contented themselves by chipping out a fresh edge, without taking the trouble of grinding it. Still it must be borne in mind, that a vast amount of labour in grinding was saved by the implement being brought as nearly to the required shape as possible by chipping only, so that the circumstance of polished celts having unground edges may be due to merely accidental causes. [Illustration: Fig. 19.—Mildenhall. 1∕2] These neatly-chipped flint celts are found also in Ireland. I have one of the same section as Fig. 18, but longer and narrower. It was found in Ulster. I have also specimens from Poitou. They are of occasional but rare occurrence with this section in Denmark. A neatly-chipped flint hatchet of small size and remarkably square at the edge is shown in Fig. 19. It was found at Mildenhall, Suffolk, and is in the Greenwell collection, now Dr. Sturge’s. There are traces of grinding on some portions of the faces. In the same collection is another hatchet of the same character from Ganton Wold, Yorkshire, the edge of which is ground. I have an unground example of this type from Lakenheath. [Illustration: Fig. 20.—Bottisham Fen. 1∕2] The original of Fig. 20 is in the Museum of the Cambridge Antiquarian Society, and was found in Bottisham Fen. In neatness of workmanship it much resembles the last; but it is slightly curved longitudinally, and has the inner face more ridged than the outer. It was probably intended to be mounted as an adze. I have a beautiful implement of the same general form, but nearly flat on one face, found in Burwell Fen. It has been manufactured from a large flake. |74|