Generally speaking, the house-row arrangement worked smoothly enough, but that friction occasionally arose, when the constables came to call upon unwilling citizens to perform the police duties incumbent on them, the following extract from "Town Life in the Fifteenth Century" bears witness: "In Aylesbury" according to the constables' report, "one Reygg kept a house all the year until the watch time came, and when he was summoned to the watch there came Edward Chalkyll 'fasesying' and said he would not watch for no man and thus bare him up, and that caused the other to be bolder for to bar the King's watch.... He said and threatened us with his master," add the constables, "and thus we be over crakyd' that we dare not go, for when they be 'mayten' they be the bolder. John Bossey said the same wise that he would not watch for us, and three others lacked each of them a night."[76] The police regulations for the government of London, as introduced in 1285, had become very minute and exacting by the latter half of the fifteenth century, many restrictions being placed on the enjoyment of personal liberty. The use of coal was prohibited, Sunday trading was forbidden, and, amongst other rules for the control of the wheeled traffic, a maximum width between wheels for vehicles was laid down which might on no account be exceeded. Ordinances also were promulgated against tradesmen who should attempt to advertise their callings in an objectionable manner, such as, for instance, the display of a basin of blood by barbers anxious to let people know that phlebotomy was included in the list of their accomplishments. The provisions of the before-quoted Statuta Civitatis (London), touching the control of leprous persons continued in force, and about this time special officers were appointed to prevent such as were infected with the plague from associating with those who were whole.