Alexander Monro (tertius) Charles found the sight of surgery so upsetting that he stopped trying and turned his attention to natural history. During Monro's tenure as Professor of Anatomy, Edinburgh was rocked by scandal due to the notorious "Burke and Hare murders" in which healthy individuals were intentionally killed in order to supply cadavers for dissection by anatomy lecturers and their students. One of the murderers, William Burke, was hanged on 28 January 1829, after which he was famously dissected at the Edinburgh Medical College by Monro himself. In a letter, Monro dipped his quill pen into Burke's blood and wrote, "This is
Burke and Hare murders and for regulating Schools of Anatomy" in mid 1828—six months before the murders were detected. This was rejected in 1829 by the House of Lords. The murders committed by Burke and Hare raised public awareness of the need for bodies for medical purposes, and of the trade that doctors had conducted with grave robbers and murderers. The East London murder of a 14-year-old boy and the subsequent attempt to sell the corpse to the medical school at King's College London led to an investigation of the London Burkers, who had recently turned from grave robbing to murder to obtain corpses;