Another implement of the same class (9 inches), flat on one face, and much like Fig. 122, is in the National Museum at Edinburgh. It is of greenstone, much decomposed, and was found at Ormiston Abdie, Fife. A shorter specimen (3 3∕4 inches) sharpened at each end, found at Sandwick, Shetland, is in the fine collection of Mr. J. W. Cursiter, at Kirkwall. Another, in outline more like the celt Fig. 57, though sharp at the sides, is also in the Greenwell Collection. It is formed of red |191| micaceous sandstone (6 3∕4 inches), and was found at Seackleton, in the North Riding of Yorkshire. A rough sketch of it has been published by Mr. Monkman.[665] In the same collection is another, rather narrower in its proportions, being 7 1∕2 inches long and 3 inches broad, found at Pilmoor, as well as one 6 inches long and 2 3∕8 inches broad, found at Nunnington. Another, 5 1∕2 inches long, square at both ends, found near Whitby, is in the Museum at Leeds. The form is known in Denmark, but is rare. A more celt-shaped specimen is engraved by Worsaae.[666] He terms it a hoe (_hakke_), and it is, of course, possible that these instruments may have been used for digging purposes. Two short, broad hoes (_hacken_), of Taunus slate, found near Mainz, are given by Lindenschmit.[667] Another is in the Museum at Brunswick. Some hoe-like, perforated stone implements from Mexico, are in the Ethnological Museum at Copenhagen. The so-called stone hoes of North America[668] are not perforated, though sometimes notched at the sides. Dr. Keller[669] has suggested that a circular perforated disc from one of the Swiss Lake-settlements may have been a hoe. In the Museum of the Deutsche Gesellschaft at Leipzig, is a greenstone implement resembling these adzes or hoes at its broader end, but at the other, instead of being square or rounded, presenting an axe-like edge. A narrow, thick adze of this character, flat on one face, rounded on the other, 4 1∕2 inches long, found at Scudnitz, near Schweinitz, Prussian Saxony, is in the Berlin Museum. A rather similar form has been found in Bohemia.[670] An intermediate form between a hammer and an adze will be subsequently described at p. 231. A small perforated adze in the Museum of the Cambridge Antiquarian Society, Fig. 123, is more truly celt-like in character, and appears, indeed, to have been made from an ordinary celt by boring a shaft-hole through it. It is formed of a hard, green, slaty rock, and was found in Burwell Fen. I believe that another, but larger, specimen of the same type, was found in the same district in Swaffham Fen. [Illustration: Fig. 123.—Burwell Fen. 1∕2]