The woman was perfectly well for eight days, but on the ninth day became very violent, and did many eccentric things, and on the next day she died. Examination of the body showed that arsenic had been the cause of death. Her husband denied that he had ever put any arsenic into her food, but had it not been for the scientific evidence he would probably have been unable to prove that he was innocent. Undoubtedly he owed his escape to his having been in prison for the eight days between the accusation brought by his wife and her death, for the medical witnesses proved that it was not possible for him to have given the dose of arsenic which caused the death of the woman, since the effects of arsenic could not have remained latent in the system for that length of time. Circumstances, therefore, indicated that the woman had committed suicide, and on the strength of this evidence the prisoner was immediately set at liberty. To come to more recent times, the most notable trial in which the results of experiments upon animals have formed one of the strongest links in the evidence against the prisoner, was that of George Henry Lamson, in 1881, who was convicted of poisoning his brother-in-law. Here again the accused was a medical man, who was able by reason of his specialised knowledge to use a poison that at the time would not readily be identified in the body after death. In fact, in the opinion of Montagu Williams, who defended him at the trial, there could be but little doubt but that he had previously poisoned a brother of his victim in the same manner, without incurring any suspicion. He was a young man twenty-nine years of age, in practice in a small way at Bournemouth. He was not well off and had been in pecuniary straits, and, as it was known at the trial, would have benefited materially by the death of his brother-in-law, Percy John, a lad of nineteen, who was at a school in Wimbledon. Percy was a cripple, and had to be carried up and down-stairs, and to be wheeled about in a chair, but there was no reason why he should not have lived to old age. The story told by the prosecution was that Dr. Lamson wrote to his brother-in-law, telling him he was coming to see him at the school on his way over to Paris, and the boy was disappointed on receiving a message that he could not come till the next day. On December 3rd, however, Lamson called at the school, and said that he had only time to pay a flying visit before catching the night train to Paris. He produced some gelatine capsules, and also a cake. Taking one of these he remarked to the schoolmaster, who was present throughout the interview, that he would leave them with him, so that he might give nasty medicines to his pupils without difficulty. He then filled one of the capsules from a basin of sugar that was on the table, and turning to the boy, said: "Here, Percy, you're a swell pill-taker; take this, and show Mr. Bedbrook how easily it may be swallowed."