When contemporary written records begin, just before the beginning of the Christian era, one race, the Britons, was dominant, and into it had merged to all appearances all others. The Britons were a Celtic people related to the inhabitants of that part of the Continent of Europe which lies nearest to Britain. They were divided into a dozen or more separate tribes, each occupying a distinct part of the country. They lived partly by the pasturing of sheep and cattle, partly by a crude agriculture. They possessed most of the familiar grains and domestic animals, and could weave and dye cloth, make pottery, build boats, forge iron, and work other metals, including tin. They had, however, no cities, no manufactures beyond the most primitive, and but little foreign trade to connect them with the Continent. At the head of each tribe was a reigning chieftain of limited powers, surrounded by lesser chiefs. The tribes were in a state of incessant warfare one with the other. *3. Roman Britain.*--This condition of insular isolation and barbarism was brought to a close in the year 55 B.C. by the invasion of the Roman army. Julius Caesar, the Roman general who was engaged in the conquest and government of Gaul, or modern France, feared that the Britons might bring aid to certain newly subjected and still restless Gallic tribes. He therefore transported a body of troops across the Channel and fought two campaigns against the tribes in the southeast of Britain. His success in the second campaign was, however, not followed up, and he retired without leaving any permanent garrison in the country. The Britons were then left alone, so far as military invasion was concerned, for almost a century, though in the meantime trade with the adjacent parts of the Continent became more common, and Roman influence showed itself in the manners and customs of the people. In the year 44 A.D., just ninety years after Caesar's campaigns, the conquest of Britain was resumed by the Roman armies and completed within the next thirty years. Britain now became an integral part of the great, well-ordered, civilized, and wealthy Roman Empire. During the greater part of that long period, Britain enjoyed profound peace, internal and external trade were safe, and much of the culture and refinement of Italy and Gaul must have made their way even to this distant province. A part of the inhabitants adopted the Roman language, dress, customs, and manner of life. Discharged veterans from the Roman legions, wealthy civil officials and merchants, settled permanently in Britain. Several bodies of turbulent tribesmen who had been defeated on the German frontier were transported by the government into Britain. The population must, therefore, have become very mixed, containing representatives of most of the races which had been conquered by the Roman armies. A permanent military force was maintained in Britain with fortified stations along the eastern and