We here give representations (fig. 47, 48, 49, 50), of the most curious specimens of the stone and flint weapons of the reindeer epoch. Knives and other small instruments, such as scrapers, piercers, borers, &c., form the great majority; hatchets are comparatively rare. Instruments are also met with which might be used for a double purpose, for instance, borers and also piercers. There are also round stones which must have been used as hammers; it may, at least, be noticed that they have received repeated blows. [Illustration: Fig. 47.--Worked Flint from Périgord (Knife).] [Illustration: Fig. 48.--Worked Flint from Périgord (Hatchet).] [Illustration: Fig. 49.--Chipped Flint from Périgord (Knife).] [Illustration: Fig. 50.--Chipped Flint from Périgord (Scraper).] Sir J. Lubbock is of opinion that some of these stones were employed in heating water, after they had been made red-hot in the fire. According to the above-named author, this plan of procuring hot water is still adopted among certain savage tribes who are still ignorant of the art of pottery, and possess nothing but wooden vessels, which cannot be placed over a fire.[8] We must also mention the polishers formed of sandstone or some other material with a rough surface. They could only be used for polishing bone and horn, as the reindeer epoch does not admit of instruments of polished stone. There have also been collected here and there pebbles of granite or quartzite hollowed out at the centre, and more or less perfectly rounded on the edges. It has been conjectured that these were mortars, although their small dimensions scarcely countenance this hypothesis. Neither is it probable that they were used for pounding seed, as fancied by M. de Vibraye. Nor does the idea which has been entertained of their being used for producing fire seem to have any sufficient ground. Among the most interesting specimens in the vast collection of flints belonging to the reindeer epoch which have been found in the countries of France and Belgium, we must mention the delicate and very finely-toothed double-edged saws. The one we here represent (fig. 51) is in the Archæological Museum of Saint-Germain. It does not measure more than three-quarters of an inch in length, and about one-tenth of an inch in width. It was found by M. V. Brun in one of the _rock-shelters_ at Bruniquel. [Illustration: Fig. 51.--Small Flint Saw, found in the Rock-shelter at Bruniquel.] Saws of this kind were, no doubt, employed for fashioning the antlers of the reindeer, and other ruminants that shed their horns. The antler was cut into on each side, and the fracture was finished by hand. The objects of bone and reindeer-horn found in the caves of Périgord show a still greater variety, and a no less remarkable skilfulness in workmanship.