Independently of this type, which is the most plentiful, the northern tribes used also to manufacture the drilled hatchet, which is combined in various ways with the hammer. In these instruments, the best workmanship and the most pleasing shapes are to be noticed. The figs. 88, 89 and 90, designed in the Museum of Saint-Germain, from authentic specimens sent by the Museum of Copenhagen, represent double-edged axes and axe-hammers. They are all pierced with a round hole in which the handle was fixed. The cutting edge describes an arc of a circle, and the other end is wrought into sharp angular edges. [Illustration: Fig. 88.--Double-edged Axe] [Illustration: Fig. 89.--Danish Axe-hammer, drilled for handle.] [Illustration: Fig. 90.--Danish Axe-hammer, drilled for handle.] These hatchets are distinguished from those of the reindeer epoch by a characteristic which enables us to refer them without hesitation to their real date, even in cases in which they have not yet been subject to the operation of polishing. The hatchets of the reindeer epoch have their cutting edge at the narrowest end, whilst those of the polished-stone epoch are sharp at their widest end. This observation does not apply specially to the Danish hatchets; it refers equally to those of other European countries. The spear-heads are masterpieces of good taste, patience, and skill. There are two sorts of them. The most beautiful (figs. 91, 92) assume the shape of a laurel-leaf; they are quite flat, and chipped all over with an infinite amount of art. Their length is as much as 15 inches. Others are shorter and thicker in shape, and terminate at the base in an almost cylindrical handle. Sometimes they are toothed at the edge (fig. 93). These spear-heads were evidently fixed at the end of a staff, like the halberds of the middle ages and the modern lance. [Illustration: Fig. 91.--Spear-head from Denmark.] [Illustration: Fig. 92.--Spear-head from Denmark.] The poniards (fig. 94) are no less admirable in their workmanship than the spear-heads, from which they do not perceptibly differ, except in having a handle, which is flat, wide, solid, and made a little thicker at the end. This handle is always more or less ornamented, and is sometimes covered with delicate carving. To chip a flint in this way must have required a skilful and well-practised hand. [Illustration: Fig. 93.--Toothed Spear-head of Flint.] [Illustration: Fig. 94.--Flint Poniard, from Denmark.] After these somewhat extraordinary instruments, we must mention the arrow-heads, the shapes of which are rather varied in their character. The arrow-heads most frequently found are formed in the shape of a triangular prism, terminating at the lower end in a stem intended to be inserted into a stick (fig. 95); others are deeply indented at the base and quite flat. Many are finely serrated on the edges, and occasionally even on the inside edge of the indentation.