_Daggers._--The dagger is one of the commonest forms of weapon relating to the Stone Age, as might be supposed from its simple form and easy construction when compared with others. In its crudest and earliest condition it merely consisted of a flint rudely chipped to a point at one end; but subsequently it assumed a more definite form, and almost equal attention was paid to the handle and to the blade. The latter was invariably leaf-shaped, and broader towards the point than at the butt, where it is usually rounded or cut off square. The beautiful example, Fig. 10, is of white flint and may be seen in the British Museum, while Fig. 11 from the same collection is of black flint and about eight inches in length. As this is thickened at the butt it may have been used without any handle, but undoubtedly most of these blades were so mounted, and in Fig. 12 we have an example of the notched variety, where two indentations are perceived on either side for the passage of the tendons fixing the blade to the handle. In a few cases a shaped handle having a pommel and a grip, and with the blade formed out of the same piece of flint, has been discovered; the weapons in these instances have been ten or twelve inches in length, and modelled precisely the same as the bronze dagger which succeeded them. The highest type of flint weapons of the dagger class are those which have been discovered in Egypt; they are provided with long thin blades, beautifully ground or chipped on one side to form an edge, and elaborately serrated upon the thicker side forming the back, with cross ripple markings for ornamentation, the whole forming a specimen of clever handicraft and skilful workmanship which can only be adequately appreciated by actual inspection. Among the weapons of the Stone Age may be mentioned the sling-stones, which are found in considerable numbers in countries where flints abound; they are of a lens-like shape and from two to three inches in diameter, being probably formed in this manner for insertion in a cleft stick which was used for throwing them. Balls of stone are also occasionally found with grooves in them, which suggest the presence at one time of string; these may have been used as weapons for throwing with the string attached, or wielded in the hand as a flail. _Battle-axes._--Although the celt may be regarded as fulfilling the functions of a battle-axe among its other manifold duties, yet a true battle-axe was evolved by the Stone man towards the latter part of his existence. It was invariably perforated by a circular hole, effected by grinding, and as a rule assumed approximately the shape shown in Fig. 13. Examples of these battle-axes have been found with cutting projections upon each side of the shaft; this was probably the prototype of the bipennis subsequently made in bronze and finally in iron. An example is shown in Fig. 14. [Illustration: FIG. 13.--Stone battle-axe.] [Illustration: FIG. 14.--Battle-axe.] THE BRONZE AGE