Other links with national affairs were the periodic visits of the King's judges who travelled on circuit over the country, stopping at important centres to hold assize there. Their duties consisted not only in settling matters of litigation, but also in reviewing the way in which all the King's affairs were being conducted in each locality. They supervised the work of the sheriffs. Galtres Forest and the Fish Pond, both royal property, helped to furnish the king's table with food. From the royal Larder at York such foodstuffs as venison, game, and fish were despatched salted to wherever the King required them. C. BUSINESS LIFE Business, in one form or another, was the occupation of the majority of the citizens. There were a few capitalist merchants, many traders, and thousands of employed workpeople, skilled and unskilled. Such street names as Spurriergate, Fishergate, Girdlergate, Hosier Lane, and Colliergate would suggest that men in the same trade had their premises in the same quarter, possibly in the same street. The English middle class, which had taken form in the fourteenth century, was well established in the fifteenth century, when it became so important as to be an appreciable factor in the national life. The middle class arose through currency, the use of money to bring in more money by trading. Trade became the monopoly of the middle class, the successful master-traders. It was men of this class, the capitalist employers, the merchants and traders who were the mayors and aldermen, who ruled the city. The exclusiveness, which was eminently characteristic of this class, appeared especially in their attitude towards national taxation and in that towards trade organisations. With regard to taxation the towns persistently avoided the assessment of individual traders, who did not wish to disclose the amount of their wealth, by agreeing that the whole town should pay to the Exchequer a sum to be raised by the Mayor and Corporation. The middle class achieved its aims politically by transformation from within. Instead of making a direct assertive attack, these master-traders usually so developed their own interests within the established institutions (such as the guilds) that they ultimately gained their object quietly and shrewdly. This class established itself against the King and the nobles on the one hand, and during the century in effective fashion against the workers on the other. This appears in the more definite distinctions of class among the citizens that arose. The masters had got the control of the guilds into their own power. While maintaining the original outward appearance of the guilds as societies of men affected by the same interests in daily life, the employers had actually become a powerful vested class that ruled both city and guild life. In the fifteenth century the workmen were founding fraternities of their own.