The citizens of London had a common seal for the city. London merchants traveled throughout the nation with goods to sell exempt from tolls. Most of the London aldermen were woolmongers, vintners, skinners, and grocers by turns or carried on all these branches of commerce at once. Jews were allowed to make loans with interest up to 2d. a week for 20s. lent. There are three inns in London. Inns typically had narrow facades, large courtyards, lodging and refreshment for the well-off, warehousing and marketing facilities for merchants, and stabling and repairs for wagons. Caregiving infirmaries such as "Bethlehem Hospital" were established in London. One was a lunatic infirmary founded by the sheriff of London. Benefactors conveyed plots of land with houses to the city for the benefit and use of the Franciscan friars who came to London as missionaries because the friars' law forbade them from owning anything. The city held the land in trust for the beneficiaries, the friars. Only tiles were used for roofing in London, because wood shingles were fire hazards and fires in London had been frequent. Some areas near London are disclaimed by the king to be royal forest land, so all citizens could hunt there and till their land there without interference by the royal foresters. The Sheriff's court in London lost its old importance and handled mainly trespass and debt cases, while important cases went to the Hustings, which was presided over by the Mayor with the sheriffs and aldermen in attendance. From the early 1200s, the Mayor's Court took on the work which the weekly Husting could not manage. This consisted mostly of assault and robbery cases. Murder and manslaughter cases were left to the royal courts. London aldermen were elected by the citizens of their respective wards in wardmotes, in which was also arranged the watch, protection against fire, and probably also assessment of the taxes within the ward. There was much effort by the commoners to influence the governance of the city. In 1261 they forced their way into the townmote and by this brute show of strength, which threatened riot, they made their own candidate mayor. Subsequent elections were tumultuous.