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Rh Edinburgh. I have two English specimens of the same kind but pointed at the butt, from the neighbourhood of Icklingham.

The sharpened ends of stone celts, when broken off, have occasionally been converted into knives. One such, from Gilling, Yorkshire, with the fractured surface rounded by grinding, is in the Greenwell Collection.

Another form of knife closely allied to the type of Fig. 251, is broader, and has all its edges sharpened. The instrument shown in Fig. 254 was found near Bridlington. It is made from a large broad flake, the outer face of which has been re-worked to such an extent that not more than one-fourth of the original surface remains intact. The inner face, on the contrary, is left almost untouched, except just at the two ends. As will be seen from the engraving, a portion of the original edge has been chipped away, apparently in modern times, by the first finder having used it as a "strike-a-light" flint. What remains of the original edge has been carefully sharpened, and the angles between some of the facets on the convex face have also been removed by grinding. An example of the same kind from Butterlaw, near Coldstream, has been figured.

Others more or less perfect have been found at Glenluce, Earlston, and on the Culbin Sands.

A nearly similar instrument, from Sweden, has been engraved by Nilsson, but its edges are not described as ground.

A more highly finished form of the same implement is shown in Fig. 255. The original was found at Pick Rudge Farm, Overton, Wilts, in company with the large barbed arrow or javelin-head. Fig. 305, and both are now in the Blackmore Museum. Like Fig. 254, it is flatter on one face than the other; it is, however, polished all over as well as ground at the edges. These are rather sharper at the two ends than at the sides. Another specimen of the same form, and of almost