Saturday 02 Aug 1845 (p. 2, col. 6-7) THE CASE OF POISONING AT LOCKERBY.-At the High Court of Justiciary, Edinburgh, on Tuesday, Janet WALKER, wife of Thomas WALKER, Blue Bell inn, Lockerby, Dumfries-shire, was charged with the crime of murder, in so far as having wickedly, maliciously, and feloniously administered to George TEDCASTLE, her son by a former husband, between the 16th February and the 2nd of March last, one or more quantities of arsenic, from the effects of which he died. She pleaded not guilty, and the case went on to trial. The evidence for the prosecution amounted to the following:-Jacob WRIGHT, ostler at the Blue Bell, proved that he had been twice sent by Mrs. WALKER to purchase arsenic for the purpose of destroying rats-that he delivered each quantity to her-that it was placed in the byre and coach-house, and that the boy, during his illness, said to witness, that his mother had done it all, having given him "some white thing." Other witnesses corroborated this evidence. Drs. CHRISTISON and TRAIL, Edinburgh, stated, that they had obtained arsenic from the intestines, liver, &c., of the deceased, which had been taken out on a post mortem examination, and sent to Edinburgh, in such quantity, that, taking the symptoms of his illness, as reported by the attending surgeon, left not the slightest doubt in their minds that death had ensued from the effect of that poison. As exculpatory evidence, Mary TEDCASTLE, sister of the deceased, was adduced, who deponed, that her brother returning on bail from Dumfries gaol, whither be had been taken on a charge of abstracting money from a letter passing through the post-office, he was much depressed in spirits, and asked her to buy some sugar of lead for him-that he said he would jump over Shillahill Bridge, and afterwards asked her where the poison mixed up for the rats had been laid-that to the latter question she replied, it was in the coach-house, and that he went there the same evening. At the conclusion of this witness's examination, the Solicitor-General gave up the case, on the ground of insufficient evidence to bring home the charge; and therefore the jury, on the direction of the court, returned a verdict of not guilty. The prisoner was accordingly discharged. ACQUITTAL OF L. H. GOULE.-L. H. GOULE was tried at Durham, on Tuesday last, before Baron ROLFE, for the murder of his wife, and acquited [sic] on the ground of insanity. He is to be kept in custody till her Majesty's pleasure be known. He was defended by Mr. WILKINS.