The dagger-blade variety is of what is usually called the “leaf-shaped” type, and is the prototype of the bronze dagger of a later period. The example here given (fig. 154) is from Green-Low, and is of remarkably fine form. Another, and of perhaps much finer form, is shown on the accompanying plate (fig. 155). It was found at Arbow-Low, in June, 1865, and is five and seven-eighths inches in length, and nearly two and a quarter inches in width in the centre. In its thickest part it is scarcely three-eighths of an inch in thickness, and is chopped and worked with the utmost nicety to a fine edge. It will be noticed that its sides, as they begin to diminish, are deeply serrated for fastening with thongs to the haft or handle. It is engraved the exact size of the original. [Illustration: Fig. 155.] The next illustrations exhibit a different variety of flints. They are arrow-heads of the leaf-shaped types, and exhibit four varieties. Figs. 156 and 157 are from Calais Wold, in Yorkshire; fig. 158 is from Gunthorpe, in Lincolnshire; and fig. 159, which is of remarkably elegant form, is from Ringham-Low, Derbyshire. They are engraved of their full size. This type of flint varies, it will be seen, from the acutely angled and sharply pointed shapes to those of a nicely rounded and egg-shaped form. Two other remarkable examples, possibly spear-heads, are here engraved, from the Calais Wold barrow, in Yorkshire (figs. 160 and 161). They are among the finest examples which have ever been found. [Illustration: Fig. 156.] [Illustration: Fig. 157.] [Illustration: Fig. 158.] [Illustration: Fig. 159.] Another type, one not common in England, is shown on fig. 162. It is a fine example, and was found in Derbyshire. It is deeply serrated on the edges, and at its base is cut for tying with a thong. It is here engraved of its full size. [Illustration: Fig. 160.] [Illustration: Fig. 161.] [Illustration: Fig. 162.] [Illustration: Fig. 163.] Fig. 163 is a modification of this form, and is a good example of its kind. Figs. 164 and 165 are Derbyshire examples in my own collection, and are good specimens of another class of flint instruments not unfrequently found in grave-mounds and elsewhere. [Illustration: Fig. 164.] [Illustration: Fig. 165.] Another variety, again, and one which varies extremely, both in size and in form, is what, I suppose for want of a better name, is the kind usually called “scrapers,” or “flint knives.” One example (fig. 166) will be sufficient. [Illustration: Fig. 166.] Another description, again, which appears more intended for throwing than for any other purpose, and which, with its sharp cutting edges, and the unerring aim of the Briton, must have been indeed a deadly weapon, is frequently found, and is shown on fig. 167. It is a simple circular lump of flint, an inch and a half or a couple of inches or more in diameter; flat on one side and chipped into a roundness on the other. These are often called “thumb flints.”