Samuel Kneeland, The American Cyclopædia (1879)
“ The stone age he divides into—1, that of the extinct mammals, like the mammoth and the cave bear; 2, that of the migrated existing animals, the reindeer epoch; 3, that of the domesticated existing animals, the polished-stone age. The metal age he subdivides into the bronze and the iron ages. According to him, primitive man lived in a comparatively cold, barren, and wet earth, presenting no fruits for his sustenance, and no opportunity for agriculture; essentially predaceous and carnivorous, an eater of raw flesh, and a cannibal, like many savage races of the present day ”
