As the nineteenth century advanced, mummies became prized objects of display and scores of them were purchased by wealthy European and American private collectors as tourist souvenirs. For those who could not afford a whole mummy, disarticulated remains – such as a head, hand or foot – could be purchased on the black market and smuggled back home.
So brisk was the trade in mummies to Europe that even after ransacking tombs and catacombs there just were not enough ancient Egyptian bodies to meet the demand. And so fake mummies were fabricated from the corpses of the executed criminals, the aged, the poor and those who had died from hideous diseases, by burying them in the sand or stuffing them with bitumen and exposing them to the sun.
mumies are scary :)