Originally the University copied to a certain extent the guilds of a city corporation, and as a seven years' apprenticeship was imposed upon lads entering trade guilds, so a seven years' course was expected of a student between the date of his entry as a clerk and the time at which he might take his M.A. degree. In the previous century there were regular University guilds, and as the University was international, and men from all countries came thither, these guilds naturally partook of a national character, men of the same language consorting together, so that different Halls became associated with the names of different nationalities. Even amongst the inhabitants of the British Isles there were distinctions and race divisions. The Welsh formed a colony of their own, whilst North and South were the two main factions in the place in the thirteenth century, and these brawled terribly at times between themselves. Even when no actual brawling was going on, the streets of Oxford after dusk were places where it was needful to walk warily. By day studies and games occupied the clerks the best part of their time; but with the setting of the sun a stop was put to these occupations. Candles were dear, firing was often scanty, and the close, ill-smelling Halls, where the rush-strewn floors were often not cleaned for weeks together, became almost intolerable when shut up. Naturally enough, the clerks preferred to sally forth into the streets, some to drink or sing songs at the taverns, others to parade the streets, shouting and joking, and playing any pranks that entered their heads. When it is remembered that almost every person in those days carried arms of some sort, and that the most trifling quarrel provoked blows, it may well be understood that the evening hours in the city were anything but peaceful, and some sympathy can be felt with the citizens in their enmity towards the gownsmen, even though these were a source of profit to them. Evening by evening Leofric and Jack heard hideous sounds of drunken revelry proceeding from the various streets in the vicinity, and if ever they had the curiosity to parade the town after dark, they were amazed at the disorder and violence which seemed to prevail. "I had thought," said Leofric, "that Oxford would be full of grave and reverend doctors, whose presence would impose order and gravity upon all. But methinks it is full of wantonness and revelling and fighting. Right glad am I, good Jack, that we have our own little nest on the walls. I should be loth indeed to belong to yonder herd." Jack was not quite so particular, and a frolic in the streets, so long as things did not go too far, was rather agreeable to him than otherwise. Sometimes he would steal out, whilst Leofric was poring over his illuminating work, and enjoy a stroll with some of the clerks of the better sort with whom he had made acquaintance, and as he grew used to the strange ways of the city, he found much to amuse and interest him.