Note 1 — Chapter VII · Camps, Fortifications, Vitrified Forts; Santorin; The Towns upon the Hill of Hissarlik.

Population rapidly increased and war was declared between tribe and tribe, nation and nation, race and race. Terrible must have been the struggles between invaders and the original possessors of the soil. Means of defence were multiplied to keep pace with new modes of attack, and our ancestors of the Stone age were intelligent enough to make places of refuge in which on necessity they could shelter their wives and children, and later, when they became sedentary, their flocks and their stores of grain. In many different localities we find the remains of camps and fortifications, which, to avoid using a more ambitious term, we may characterize generally as enclosures.1