Diagram 2.
DEVELOPMENT OF SPEAR & ARROW-HEAD FORMS.
I have arranged in tabular form, on diagram No. 2 (= Plate XIII), representations of spear and arrow heads from all the different localities from which I have been able to obtain them in sufficient number to show fairly the numerous varieties which each country produces. On the top of the diagram, from left to right, the several forms are arranged in the order that appears most truly to indicate progression; but it must not be supposed that this arrangement is absolutely correct, for the several forms, such for example as the tang and the triangular form, were most probably derived from a common centre. The specimens from each locality ought therefore, in order to display their progression properly, to be arranged in the form of a tree, branching from a common stem. On the left of the diagram are written the different periods and localities, from which the specimens are derived. Commencing with the drift—the oldest of which we have any knowledge—which is coeval with the elephant and rhinoceros in Europe, we have the peculiar thick form already described. The examples of the drift period here shown, from their small size, must evidently have been used with a shaft, as they are scarcely large enough to have served as hand tools. None of the lozenge, tang, or triangular forms, have ever been found in the drift.
The next line represents specimens from the French caves of the reindeer period, which are taken from the Reliquiae Aquitanicae, chiefly from Dordogne.[147] It will be seen that in these caves the first rude indications of the lozenge and tang form are represented, but no perfect specimens of either class. No example of the triangular form has been discovered. The leaf-shape form, however, is well represented.
In the ancient habitations of the Swiss Lakes, which belong to a later period, all varieties, except those of the drift type, are represented, but none of them in their most fully developed form; the tangs, it will be seen, are long, and the barbs comparatively short; the triangular form, which I consider to be the latest in the order of development, is mentioned by Dr. Keller, from whose work these specimens are taken, as being extremely rare. The comparative rarity of flint implements in the Lakes may, however, in some measure be accounted for, by the absence of flint in the district, necessitating the importation of this material from a distance.
The specimens from Yorkshire, Ireland, Sweden, Denmark, Italy, and Germany, may be considered to carry the development of these forms up to the latest period, viz. the late stone, and early bronze age; for there can be no doubt from the number of arrow-heads found in these countries, in connexion with implements of bronze, that they were used for missile purposes long after the armes blanches had been constructed of metal.
In all these localities it will be seen that the various gradations of form are identical; but as I have been able to collect a much larger number of arrow-heads from Ireland than elsewhere, the development of form is more apparent in the specimens selected from that country.
From the leaf-shape, it will be observed, there is every link of transition into the perfect lozenge type, and the latter is as a general rule, both in Ireland and in Yorkshire, much rarer, and more carefully constructed, than the leaf-shaped type, showing that there is every probability of the lozenge having been an improved form.
The tang form is represented, at first, by a few rude chips on each side of the base of the original flake, narrowing that part in such a manner as to admit of its being inserted, into a handle or shaft, and bound round with a sinew. This is superseded by the gradual formation of barbs on each side, and these barbs are lengthened by degrees, until they reach to the line of the base of the tang; the tang subsequently shortens, leaving the barbs with a semicircular aperture between them, and thus approaching some of the forms represented in the triangular column. These latter barbed specimens are usually more finished, and chipped with greater care than the long-tanged ones, which are rougher, more time-worn, and probably of earlier date.