Lastly, we will mention the cave of Saint-Jean-d'Alcas (Aveyron), which has been explored, at different times, by M. Cazalis de Fondouce. This is a sepulchral cave, like that of Aurignac. When it was first explored, about twenty years ago, five human skulls, in good preservation, were found in it--a discovery, the importance of which was then unheeded, and the skulls were, in consequence, totally lost to science. Flint, jade, and serpentine instruments, carved bones, remains of rough pottery, stone amulets, and the shells of shell-fish, which had formed necklaces and bracelets, were intermingled with human bones. At Saint-Jean-d'Alcas, M. Cazalis de Fondouce did not meet with any remains of funeral banquets such as were found at Aurignac and Furfooz; he only noticed two large flag-stones lying across one another at the mouth of the cave, so as to make the inlet considerably narrower. This cave, according to a recent publication of M. Cazalis, must be referred to a more recent epoch than was at first supposed, for some fragments of metallic substances were found in it. It must, therefore, have belonged to a late period of the polished-stone epoch.[17] _Man's System of Feeding during the Polished-stone Epoch._--In order to obtain full information on the subject of man's food in the north and centre of Europe during the polished-stone epoch, we must appeal to the interesting researches of which Denmark has been the scene during the last few years; but these researches, on account of their importance, require a detailed account. [Illustration: Fig. 76.--Man of the Polished-stone Epoch.] FOOTNOTES: [13] 'L'Homme Fossile des Cavernes de Lombrive et de Lherm.' Toulouse, 1862. Illustrated. 'L'Age de Pierre dans les Vallées de Tarascon' (Ariége). Tarascon, 1863. [14] 'Sur deux Cavernes découvertes dans la Montagne de Kaer à Massat' (Ariége). Quoted by Lyell, Appendix to 'The Antiquity of Man,' p. 247. [15] 'De l'Existence de l'Homme pendant la Période quaternaire dans la grotte de Lourdes' (Hautes-Pyrénées). ('Annales des Sciences Naturelles,' 4th series, vol. xvii.) [16] 'Mémoires de l'Académie de Montpellier' ('Section des Sciences'), 1857, vol. iii, p. 509. [17] 'Sur une Caverne de l'Age de la Pierre, située près de Saint-Jean-d'Alcas' (Aveyron), 1864. 'Derniers Temps de l'Age de la Pierre Polie dans l'Aveyron', Montpellier, 1867. Illustrated. CHAPTER II. The _Kjoekken-Moeddings_ or "Kitchen-middens" of Denmark--Mode of Life of the Men living in Denmark during the Polished-stone Epoch--The Domestication of the Dog--The Art of Fishing during the Polished-stone Epoch--Fishing-nets--Weapons and Instruments of War--Type of the Human Race; the Borreby Skull.