3rd. The epoch of domesticated existing animals (or the polished-stone epoch).
The "Metal Age" may also be divided into two periods:
1st. The Bronze Epoch;
2nd. The Iron Epoch.
The following synoptical table will perhaps bring more clearly before the eyes of our readers this mode of classification, which has, at least, the merit of enabling us to make a clear and simple statement of the very incongruous facts which make up the history of primitive man:
| The Stone Age. | 1st. Epoch of extinct animals (or of the great bear and mammoth). | |
| 2nd. Epoch of migrated existing animals (or the reindeer epoch). | ||
| 3rd. Epoch of domesticated existing animals (or the polished-stone epoch). | ||
| The Metal Age. | 1st. The Bronze Epoch. | |
| 2nd. The Iron Epoch. |
FOOTNOTES:
[ [1] 'Nouvelles Recherches sur la Coexistence de l'Homme et des grands Mammifères Fossiles réputés charactéristiques de la dernière période Géologique,' by Éd. Lartet, 'Annales des Sciences Naturelles,' 4th ser. vol. xv. p. 256.
[ [2] 1 vol. 8vo., Paris, 1869; V. Palme.
[ [3] 2 vols. 12mo., 3rd edit., Paris, 1859; Lagny frères.