But in other examples of a like character we are left in no doubt. The deer’s-horn harpoons of the whalers of Blair-Drummond Moss are unquestionably contemporaneous with the fossil whales; and although the implements are rude enough, they will class with harpoons and fish-spears here described, some of which have been found associated with works in bone and ivory of great ingenuity and skill. The Greenland whale undoubtedly haunted the northern shores of Scotland within historic times. Its bones occur in Scottish brochs and kitchen-middens; and among the many traces of prehistoric arts and habits of life disclosed by the contents of the Scottish subterranean dwellings, one of the most interesting is a large drinking-cup fashioned from the vertebra of a whale. It was found in a weem on the Isle of Eday, in Orkney, along with a bone scoop, bone pins, combs, and other primitive relics, including some of metal. The cup measures 4½ inches high; and, as shown in Fig. 25, is a very simple adaptation of the natural form of the bone by sawing off the protruding spinous processes. [Illustration: FIG. 25.—Whale’s Vertebra Cup.] The ancient workman had his knife, saw, adze, chisel, drill, and scraper,—or plane, as we may term it,—all made of flint. The worn and triturated edges of many of those flint-tools show abundant evidence of their use in fashioning some hard substance. He had also his file, made of grit-stone; of which various examples have been found in the caves. They are generally styled whetstones; but their purpose was probably the very same as that of a modern file. Some are of coarse-grained stone, and others of a finer grit. Without some such tools it would have been impossible to bring the more elaborate implements of bone and ivory to the state of finish which they present. Among such, the harpoons and fish-spears furnish a variety of types, diversified by the ingenuity of the workman, and the necessities of his craft. Examples of such primitive fishing implements of widely different eras are here grouped together. The three-pronged fish-spear, Fig. 26, illustrates the art of the Esquimaux fisherman: that living race of Arctic seas, which alike in arts and in condition of life, realises for us in so many ways the men of Europe’s post-glacial age. Alongside of it are a hook, or spear-head of deer’s-horn, Fig. 27, and a barbed fish-spear of the same material, Fig. 28, both the work of the ancient Lake-dwellers [Illustration: FIG. 26-30.—Fish-spears and Harpoons.]