Then, gentlemen, that answer consists of two parts--first, of the medical evidence, and, secondly, of the evidence of facts. With regard to the medical evidence, I must say that there were examined on the part of the prisoner a number of gentlemen of high honour and solid integrity and proved scientific knowledge, who came here only to speak the truth and assist in the administration of justice. You may be of opinion that others came whose object was to procure an acquittal of the prisoner. Gentlemen, it is material, in the due administration of justice, that a witness should not be turned into an advocate, any more than an advocate should be turned into a witness. It is for you to say whether some of those who were called on the part of the prisoner did not belong to the category which I described as witnesses becoming advocates. Gentlemen, the first witness on the part of the prisoner was Mr. Thomas Nunneley. (The learned judge read the evidence of Mr. Nunneley and the documents therein referred to.) You will recollect what he says, and you will form your opinion as to the weight that is to be given to it. He certainly seemed to me to give his evidence in a manner not quite becoming a witness in a Court of justice, but you will give all attention to the facts to which he refers in the evidence he gave. He differs very materially in his general opinion from several of the witnesses who were examined on the part of the prosecution. He speaks of there being an extraordinary rigidity of the body after death, when there has been a death of this description, with other symptoms, and he attaches considerable importance to the heart being empty, but you will say what weight ought to be attached to his opinion. [Sidenote: Lord Campbell] Mr. William Herapath is then called. (The examination-in-chief of Mr. Herapath was read.) He seems to differ from Mr. Nunneley with respect to the rigidity produced by this poison. Now, gentlemen, Mr. Herapath is a very skilful chemist, and I have no doubt he spoke sincerely what he thought, and what was his opinion? That when there has been death by strychnia, strychnia ought to be discovered; but it seems he intimated an opinion on this very case of Cook that there might have been strychnia, and that Dr. Taylor did not use the proper means to detect it. Now, the only evidence that we have in this case that there was not strychnia is the analysis by Dr. Taylor and Dr. Rees that they did not discover it. As I before pointed out to you, in two other cases in which there certainly had been poisoning by strychnia the result was the same--they could not discover it.