Note 324 — Chapter VI · THE PROTO-SIDERIC OR EARLY IRON AGE OF WEAPONS.

‘To the abundance of iron we may attribute the fact that the Africans appear to have passed direct from the stone implements, that are now found in the soil, to those of iron, without passing through the intermediate bronze period which, in Egypt and other countries, intervened between the ages of stone and iron.’—Anthropol. Coll. pp. 128–134.