In the collection formed by Canon Greenwell is one found at Coves Houses, Wolsingham, Durham (3 1∕2 inches), and another of quartzite (4 1∕2 inches), with both ends battered, from Mildenhall Fen. He discovered another of small size, only 2 1∕4 inches in length, with the perforation not |230| more than 7∕16 inch in diameter in the centre, in the soil of a barrow at Rudstone,[815] near Bridlington. The late Mr. H. Durden, of Blandford, had two fragments of these hammers, made from quartzite pebbles, one of them from Hod Hill, Dorset, and the other from the same neighbourhood. A perforated oval boulder of chert was also found near Marlborough.[816] Both round and oval hammer-stones are in the Leicester Museum.[817] One (6 1∕2 inches) was found at Doddenham, Worcestershire, and others (3 3∕8 inches) at Silverdale,[818] Torver,[819] and elsewhere in Lancashire.[820] A large specimen (8 inches) was found at Abbey Cwm Hir,[821] Radnorshire, and a small one near Rhayader,[822] Montgomeryshire. A circular example (4 1∕4 inches), with a very small central hole, was discovered in Pembrokeshire.[823] Quartzite pebbles converted into hammer-heads occur also in Scotland. The hole in one from Pitlochrie[824] is only 1∕8 inch in diameter at its centre. In one from Ythanside, Gight,[825] Aberdeenshire (4 3∕4 inches), it is only 1∕4 inch. Besides quartzite and silicious pebbles, these hammer-heads were made from fragments of several other rocks. The Rev. S. Banks had one of greenstone, 5 3∕4 inches by 3 1∕4 inches, found at Mildenhall. A disc of dolerite[826] (4 inches) with convex faces and perforated in the centre in the usual manner, was found at Caer Leb, in the parish of Llanidan, Anglesea. Several hammer-stones of this kind were obtained by the late Hon. W. O. Stanley, M.P., in his researches in the Island of Holyhead.[827] One of them, now in the British Museum, is of trap, 4 1∕2 inches long and 3 inches broad, somewhat square at the ends; another is of schist, 3 3∕8 inches long, and much thinner in proportion. Both were found at Pen-y-Bonc. A fragment of a third, formed of granite (?), was found at Ty Mawr, in the same island. One of granite (?)[828] was found at Titsey Park, Surrey. A small one of “light grey burr stone,” 2 3∕8 inches in diameter, was found at Haydock,[829] near Newton, Lancashire. I have a subquadrate example (4 inches) of felsite, from Belper, Derbyshire. The Scottish specimens are often of other materials than quartzite. A circular “flailstone,” found at Culter, Lanarkshire, has been figured,[830] but the material is not stated. The same is the case with an oval one, 4 inches long, found near Longman,[831] Macduff, Banff; another from Forfarshire;[832] and a third, 4 inches by 3 inches, from Alloa.[833]