The specimen engraved as Fig. 161 has been made from a quartzite pebble, and has the conical depression deeper on one face than the other. It was found at Winterbourn Bassett, Wilts, and is now in the British Museum. [Illustration: Fig. 161.—Winterbourn Bassett. 1∕2] In the Norwich Museum is a similar pebble, from Sporle, near Swaffham. It is 3 3∕4 inches long, recessed on each face, with a conical depression, the apex rounded. These cavities are about 1 1∕4 inches diameter on the face of the stone, and about 3∕4 inch in depth. The Rev. W. C. Lukis, F.S.A., had a hammer-stone of this kind, 3 inches long, found at Melmerby, Cumberland. One (6 inches) was found at Langtree,[899] Devon, another (3 1∕8 inches) at Trefeglwys,[900] Montgomeryshire. I have one (3 inches) from Ryton-on-Dunsmore, Coventry, and a thinner example, 2 3∕4 inches, much worn at the ends, from Litlington, Cambs. A circular rough-grained stone, 3 inches in diameter, with deep cup-like indentations on each face, found on Goldenoch Moor, Wigtownshire,[901] is in the National Museum at Edinburgh; where is also another hammer formed of a greenstone pebble (3 1∕2 inches), with broad and deep cup-shaped depressions on each face, and much worn at one end, which came from Dunning, Perthshire. There are other examples of the same kind in the same museum. Many have, indeed, |241| been found in Scotland. A good example from Machermore Loch,[902] Wigtownshire, and several others,[903] have been figured. [Illustration: Fig. 161A.—Goldenoch. 1∕2] That from Goldenoch, shown in Fig. 161A,[904] has a deep recess on each face. Others from Fife[905] have the recess on one face only. In the case of one from the Island of Coll[906] the recesses are at the sides instead of on the faces. In some cases the depressions are shallower, and concave rather than conical. I have a flat irregular disc of greenstone, about 2 1∕4 inches diameter and 5∕8 inch thick, thinning off to the edges, which are rounded, and having in the centre of each face a slight cup-like depression, about 5∕8 inch in diameter. It was found in a trench at Ganton, Yorkshire. In the Greenwell Collection is a somewhat larger disc of sandstone, worn on both faces and round the whole edge, and with a slight central depression. It was found in a cairn at Harbottle Peels, Northumberland. In form, these instruments are identical with the _Tilhuggersteene_[907] of the Danish antiquaries, and it is possible that some of them, especially those of the circular form, may have been used for the purpose of chipping out other kinds of stone implements. The type is not of uncommon occurrence in Ireland.[908] It is rare in France, but a broken example from the neighbourhood of Amiens is in the Blackmore Museum. I have a specimen which might be mistaken for Danish or Irish, but which was brought me from Port Beaufort, Cape of Good Hope, by Captain H. Thurburn, F.G.S. It must have been in use there at no very remote period.