Another form, usually very thick in proportion to its breadth, and neatly worked over the whole of the convex face, is shown in Fig. 235. This specimen, also from the Yorkshire Wolds, is in the Greenwell Collection, now Dr. Sturge’s. I have seen another from a barrow near Hay, Breconshire; and in the National Museum at Edinburgh is a specimen found near Urquhart, Elgin. In an implement of the same form in my own possession some small irregularities on the flat face have been removed by delicate chipping. I have several examples from Suffolk. There is nothing to guide us in attempting to determine the use of such instruments, but if inserted in handles they would be well adapted for boring holes in wood or other soft substances. The same form occurs in Ireland. In the Greenwell Collection is an Irish specimen ground all along the ridge, and over the whole of the butt-end. A pointed flattish flake (4 1∕2 inches), worked over the whole of the outer face, from Rousay,[1476] Orkney, has been figured. |329| Another much coarser but somewhat similar form is shown in Fig. 236. The instrument in this case is made from a very thick curved flake, roughly chipped into a boat-like form, and then more carefully trimmed along the edges. It may possibly have been used as a borer, as the edges near the point show some signs of attrition. It is of flint weathered grey, and was found near Bridlington. I have found a similar scaphoid form in Ireland.[1477] [Illustration: Fig. 236.—Bridlington. 1∕2] A rather thick external flake, worked over nearly the whole of its convex face and reduced to about half its breadth for about a third of its length from the point, is shown in Fig. 237. The narrower part is nearly semicircular in section. It is difficult to imagine a purpose for this reduction in width; and it hardly seems due to wear. I have, however, another specimen, also from the Yorkshire Wolds, reduced in the same manner along fully three-quarters of its length. Some of the worked flakes from the Dordogne Caves[1478] show a somewhat similar shoulder, but it seems possible that with them the broader part may have been protected by some sort of handle, as the original edge of the flake is there preserved.