As the British to defend the dead

British medical students in the last millennium practiced on the corpses of executed criminals, but once in the XVIII century were introduced more humane punishment, the number of suicide bombers dropped to a few dozen a year, which is clearly not enough education. That's when there was a tendency to exhume the dead from their graves right. To protect the dead from gutting, relatives began to put on the graves of original forged locks, by which an attempt to get the body became an exercise in futility. By the way, these safes are reusable - they were removed after 5-6 weeks after the burial, because during this time the corpse spoiled so that it becomes uninteresting for the anatomist.