To complete the picture of the triumph of Edward III. at this, the culminating point of his reign, it must be mentioned that some time before the peace of Calais he had made terms with Scotland. David Bruce was to cede Roxburgh and Berwick, but to keep the rest of his dominions on condition of paying a ransom of 100,000 marks. This sum could never be raised, and Edward always had it in his power to bring pressure to bear on the king of Scots by demanding the instalments, which were always in arrear. David gave no further trouble; indeed he became so friendly to England that he offered to proclaim Lionel of Clarence, Edward's second son, as his heir, and would have done so but for the vigorous opposition of his parliament. Economic progress in England. The English people had expected that a sort of Golden Age would follow the conclusion of the peace with Scotland and France. Freed from the war-taxes which had vexed them for the last twenty years, they would be able to repair the ravages of the Black Death, and to develop the commercial advantages which had been won at Sluys, and secured by the dominion of the seas which they had held ever since. In some respects this expectation was not deceived; the years that followed 1360 seem to have been prosperous at home, despite the continued friction arising from the Statute of Labourers. The towns would seem to have fared better than the countryside, partly indeed at its expense, for the discontented peasantry migrated in large numbers to the centres of population where newly-developed manufactures were calling for more hands. The weaving industry, introduced into the eastern counties by the king's invitation to Flemish settlers, was making England something more than a mere producer of raw material for export. The seaports soon recovered from their losses in the Black Death, and English shipping was beginning to appear in the distant seas of Portugal and the Baltic. Nothing illustrates the growth of English wealth better than the fact that the kingdom had, till the time of Edward III., contrived to conduct all its commerce with a currency of small silver, but that within thirty years of his introduction of a gold coinage in 1343, the English "noble" was being struck in enormous quantities. It invaded all the markets of western Europe, and became the prototype of the gold issues of the Netherlands, Scotland, and even parts of Germany. It is in the latter years of Edward III. that we find the first forerunners of that class of English merchant princes who were to be such a marked feature in the succeeding reigns. The Poles of Hull, whose descendants rose in three generations to ducal rank, were the earliest specimens of their class. The poet Chaucer may serve as a humbler example of the rise of the burgher class--the son of a vintner, he became the father of a knight, and the ancestor, through female descents, of many baronial families.