tical side. They were no artists, but essentially warriors and merchants. And even their merchants were often at the same time spies whom the kings of Mexico sent into the countries they coveted, to study their resources, their strength and their weakness. Their yoke was hard. They raised heavy tributes. Their policy was one of extreme centralization, and, without destroying the religion of the peoples conquered by their arms, they imposed upon them the worship and the supremacy of their own national deities. Their warlike expeditions bore a pronounced religious character. The priests marched at the head of the soldiers, and bore Aztec idols on their backs. On the eve of a battle they kindled fresh fire by the friction of wood; and it was they who gave the signal of attack. These wars had pillage and conquest as their object, but also and very specially the capture of victims to sacrifice to the Aztec gods. For the Aztecs pushed the superstitious practice of human sacrifice to absolute frenzy. It was to these horrible sacrifices that they attributed their successes in war and the prosperity of their empire. If they experienced a check or had
