Palmer speedily found imitators. Within a few weeks occurred the Leeds poisoning case, in which the murderer undoubtedly was inspired by the facts made public at Palmer's trial. Dove, a fiendish brute, found from the evidence in that case that he could kill his wife, whom he hated, with exquisite torture, and with a poison that would leave, as he thought, no trace. In the latter hope he was happily disappointed. But as this case is beyond my subject, I merely mention it as one of the group already referred to. Three years later came the case of Dr. Smethurst, presenting still greater features of resemblance with Palmer's, for both were medical men, and both raised difficult questions of medical jurisprudence. In both the jury had no doubt as to the guilt of the accused, only in Smethurst's case the then Home Secretary, Sir George Cornewall Lewis, could not divest his mind of serious doubt, of which the murderer got the full benefit. Smethurst's escape may have influenced the jury in the Poplar poisoning case, which followed close on its heels, although in that the verdict of "Not Guilty" was excusable, as the evidence was entirely circumstantial. There was no convincing proof that the accused had administered the poison, although beyond question that poison had occasioned the death. Catherine Wilson was a female poisoner who did business wholesale. She was tried in April, 1862, on suspicion of having attempted to poison a neighbour with oil of vitriol. The circumstances were strange. Mrs. Wilson had gone to the chemist's for medicine, and on her return had administered a dose of something which burned the mouth badly, but did not prove fatal. She was acquitted on this charge, but other suspicious facts cropped up while she was in Newgate. It appeared that several persons with whom she was intimate had succumbed suddenly. In all cases the symptoms were much the same, vomiting, violent retching, purging, such as are visible in cholera, and all dated from the time when she knew a young man named Dixon, who had been in the habit of taking colchicum for rheumatism. Mrs. Wilson heard then casually from a medical man that it was a very dangerous medicine, and she profited by what she had heard. Soon afterwards Dixon died, showing all the symptoms already described. A little later a friend, Mrs. Atkinson, came to London from Westmoreland, and stayed in Mrs. Wilson's house. She was in good health on leaving home, and had with her a large sum of money. While with Mrs. Wilson she became suddenly and alarmingly ill, and died in great agony. Her husband, who came up to town, would not allow a post-mortem, and again Mrs. Wilson escaped. Mrs. Atkinson's symptoms had been the same as Dixon's. Then Mrs. Wilson went to live with a man named Taylor, who was presently attacked in the same way as the others, but, thanks to the prompt administration of remedies, he recovered. After this came the charge of administering oil of vitriol,