in the south of France. By their labors and those of the numerous band of explorers who have followed in their footsteps in the same country, and by the discoveries of M. Dumont in the valley of the Meuse in Belgium, we have been enabled to gain some definite knowledge in regard to "the fossil man," his manner of life, his implements and weapons, and even his artistic capabilities.
The "classic ground," however, for the student of prehistoric science must ever be the Somme Valley, from Abbeville to Amiens. From its Quaternary gravels came those rude flint implements with which Boucher de Perthes succeeded at last in silencing the cavils of the incredulous, and establishing the coexistence of man with extinct species of animals. St. Acheul, an old abbey close to Amiens, has given the name to these objects, which are the most ancient type of man's workmanship hitherto met with, for in its vicinity they have been found in greater quantities than in any other locality. When first discovered they were called by the workmen "cats' tongues," from their shape and roughness. In outline, form, and general appearance they are perfectly characteristic, and they differ entirely from all other stone implements which have ever been discovered under different conditions. No one who is at all familiar with the subject can possibly confound one of these palæolithic axes, as they are called, roughly chipped and unground, with one of the neolithic or polished-stone times. These latter are found in large numbers, and substantially resembling each other all the world over, and are mainly relied upon to prove that everywhere man has at some time lived in a stage of culture, in which he had not attained to the knowledge of the use of metals. The palaeolithic weapons, however, or the St. Acheul axes, are of much rarer occurrence. But, if a collection of specimens from various localities, including our own country, be placed side by side, their resemblance to each other will be found to be most striking. At St. Acheul I had the satisfaction of seeing dug out in my own presence, from gravel-pits now more than a quarter of a mile from the river, and one hundred feet or more above its present level, and in a spot overtopped by no higher ground from which anything could possibly have been washed down, two such implements. These, though unfortunately broken, are yet as convincing, from their excellence of workmanship, as if they were still perfect. In this case there was no possibility of deception, through their having been buried beforehand, for me to see them dug out, since I came to the spot unannounced. The workmen at this place know well the value of such objects, and have the habit of fabricating them for sale. If, however, one of their forgeries be placed by the side of a genuine object, there will be found to exist certain infallible tests by which to discriminate between them, so that there need be no mistake. Freshly broken flint presents a peculiar dull and raw surface, entirely unlike the glossy, varnished appearance of objects which have undergone a long exposure to atmos-
