Besides all this, they found that some of the best tin and copper in the world was found in one part of England, and sometimes the people found gold and silver too. Then they saw among the shells by the sea-side, and in some of the rivers, some of those beautiful round white things called pearls, which ladies have always been fond of stringing and making necklaces of. So when they went to Rome, they told everybody of all the good things they had seen in Britain; and the great men in Rome determined to go and conquer the whole country, that they might make servants of the people, and take their land, and make corn-fields for themselves, and get all the tin, and copper, and silver, and gold, and pearls, and take them to Rome. The Romans had sent some very brave soldiers, with their great captain, the same Julius Cæsar who wrote down these things, to conquer Gaul; and they crossed the sea in order to conquer Britain; but they did not find it so easy to do as they had hoped it would be. Although the poor Britons were almost naked, and had very bad swords, and very weak spears and bows and arrows, and small shields, made of basket work covered with leather, they were so brave, that they fought a great many battles against the Romans, who had everything they could want to fight with, before they would give up any part of their country to them. At last, when the Romans had gotten a part of Britain, they were obliged to build very strong walls all about their houses. And their houses and walls were made of good stone and brick, instead of the trunks and branches of trees such as the Britons used. And the Roman soldiers were obliged to keep watch always, because the Britons were trying every day to drive them away; and they kept good swords and spears, and great shields, covered with plates of iron; and they put pieces of iron on their backs and their breasts, and their arms and legs, and called it armour, so the bad swords of the Britons could hardly ever hurt a Roman; but their bows and arrows, which they managed very well, killed a good many. However, the Romans remained masters at last, and they made the Britons cut down many of their woods, and turn the ground into corn-fields and gardens for them; and they forced them to dig the tin and copper out of the earth for them, and to fish in the seas and rivers, to find pearls for the Roman ladies; and the poor Britons were very unhappy, because they had lost their freedom, and could never do as they liked. But I must end this long chapter. In the next I will tell you how God turned the unhappiness of the poor Britons into everything good for them. CHAPTER IV. How the Romans taught the Britons many things, and how some of them became Christians. You remember, I hope, what you read in the first chapter, about the uncomfortable houses of the Britons, how badly they were dressed, and how often they were obliged to be hungry when they could not catch the birds or beasts in the woods.