Anthropodermic bibliopegy performed, or collected by medical doctors, who have access to cadavers, sometimes those of executed criminals, such as the case of John Horwood in 1821 and the Red Barn Murder in 1828. Another tradition, with less supporting evidence, is that books of erotica or the occult have been bound in human skin. The Royal College of Surgeons of Edinburgh preserves a notebook bound in the skin of the murderer William Burke after his execution and subsequent public dissection by Professor Alexander Monro in 1829. What Lawrence Thompson called "the most famous of all anthropodermic bindings" is exhibited at the Boston
Transport in Edinburgh Scottish Canals and chiefly used for leisure purposes. Given that Edinburgh is a small, relatively walkable city, travelling by foot is a possible means of transport for the majority of citizens who live, work or visit the city. Like most urban zones pedestrian density is at its highest in the commercial core of the city, where there the majority of shops, businesses and offices are located, with pedestrian density tailing off rapidly through the inner city, to the suburbs. In Edinburgh, pedestrian density is at its highest around Princes Street, George Street, Rose Street, the Royal Mile, the North and