Cheshire’s evidence as to filling up the cheque, and being asked to witness Cook’s signature, as if he was present, to the document professing to admit his liability on Palmer’s bills; his subsequent dealing with Dr. Taylor’s letter to Mr. Gardner; Palmer’s letter to the coroner stating the result of the analysis; his presents to the coroner; and his instructions to Bate not to let anyone see him deliver his letter to Mr. Ward, together with the instructions to Herring about Cook’s bets, were then carefully reviewed before entering on the medico-scientific evidence offered on the part of the prosecution.
The evidence of this class of witnesses has been so fully reported, that it is needless to repeat the Judge’s passing comments on their descriptions of the symptoms of tetanus as consistent with those in Cook’s case, and with those exhibited in the cases of undoubted poisoning by strychnia, detailed by the medical men who had attended the several patients. With reference to the results of the analysis by Drs. Taylor and Rees, and of the effect of their evidence, the learned Judge made the following comment on their experiments on animals:—
“There is here a most important question for your consideration. Great reliance is placed by the prisoner’s counsel, and very naturally so, upon the fact that no trace of strychnia was detected in the stomach of Cook by Dr. Taylor and Dr. Rees, who alone analysed it and experimented upon it. But, on the other hand, you must bear in mind that we have their own evidence to show that there may be and have been cases of death by strychnia in which the united skill of these two individuals has failed to detect the presence of the strychnia after death. Both Dr. Taylor and Dr. Rees have stated upon their oaths that in two cases where they knew death to have been occasioned by strychnia—the poison having, in fact, been administered with their own hands—they failed to discover the slightest trace of the poison in the dead bodies of the animals on which they had experimented. It is possible that other chemists might have succeeded in detecting strychnia in those animals and strychnia also in the jar containing the stomach and intestines of Cook; but, however this may be, it is beyond all question that Dr. Taylor and Dr. Rees failed to discover the faintest indications of strychnia in the bodies of two animals which they had themselves poisoned with that deadly drug. Whatever may be the nature of the different theories propounded for the explanation of this fact, the fact itself is deposed to on oath; and, if we believe the witnesses, does not admit of doubt.” With regard to the letter from Dr. Taylor to Mr. Gardner, stating that neither strychnia, prussic acid, nor opium had been found in the body, his lordship said, “this letter was written before Cook’s symptoms had been communicated to them; but they had been informed that prussic acid, strychnia, and opium had been bought by Palmer on the Tuesday. They searched for all these poisons, and found none. The only poison they found was antimony, and they did not, therefore, in the absence of symptoms, attribute death to strychnia, as they could not at that time; but they say it might have been produced by antimony, as they say that the quantity found in the body was no test of the quantity taken into the system.”—“For the discovery of strychnia Dr. Taylor experimented upon the bodies of animals which he had himself killed by this poison, but in them no strychnia could be found. I do not know what interest Dr. Taylor could be supposed to have to give evidence against the prisoner. He was regularly employed by the Crown, and knew nothing of Palmer until he was called upon by Mr. Stevens, and the jar was given to him. He could have no enmity against the prisoner and no interest whatever to misrepresent facts.” [On being reminded that Dr. Taylor’s experiments on the two rabbits were not made until after the inquest,] “that,” said Lord Campbell, “makes no difference. If that experiment was made this morning the fact would be the same. Against Dr. Rees there is not even the imputation of having written an indiscreet letter to a newspaper. Yet Dr. Rees concurs with Dr. Taylor, that these rabbits were killed by strychnia; that they did whatever was in their power, according to their skill and knowledge, to discover strychnia, as they did with the contents of the jar, and that no strychnia could be discovered. As to antimony, he corroborates the testimony of Dr. Taylor. Antimony is a component of tartar emetic; tartar emetic produces vomiting, and you will judge from the vomiting at Shrewsbury and Rugeley whether antimony may have been administered to Cook at those places. Antimony may not have produced death, but the question of its administration is a part of the case which you must most seriously consider.”
Having then read the evidence of Professor Brande, Dr. Christison, and Dr. John Jackson, Lord Campbell, at eight o’clock, reserved the evidence for the defence to the next day.
On resuming his charge the next morning, Lord Campbell commenced by a brief summary of his previous remarks.
“The evidence for the prosecution certainly did present a serious case against the prisoner. It appeared that in November last he was most seriously embarrassed, and that he had to make payments for which he was entirely unprepared. There were actions against himself and his mother, and he had no credit left in any quarter. Cook by the races at Shrewsbury became master of £1000, and the inference had been drawn that Palmer formed a design of appropriating it to his own purposes, in order to relieve himself from his embarrassments. Again, it was proved that the prisoner drew a cheque in the name of Cook which was a forgery, for the purpose of appropriating to himself Cook’s property. What would have been the effect of the survival of Cook under those circumstances it would be for the jury to consider. No doubt, if Cook had lived, that cheque would have been brought forward, and would have led to an exposure of all Palmer’s delinquencies. With respect to the joint liability of Cook and Palmer, it was said that it was disadvantageous to Palmer that Cook should die; but there seemed to be some doubt whether it was not the intention of Palmer to possess himself of the whole of Cook’s property, and in that case he had a direct interest in his death. Then as to the medical evidence which had been adduced for the prosecution. The jury had heard the evidence of able and honourable men, who said that the deceased did not die a natural death, and that the symptoms were consistent with death by strychnia, and not consistent with death by ordinary tetanus. There was no point of law which required that the strychnia should be found in the body of the deceased, and it would therefore be for the jury on this point to consider whether the evidence of the prosecution was sufficient, or whether they could rely upon the answer which had been put in by the defence. There was direct evidence that the prisoner procured the poison of strychnia on Monday and Tuesday. What he did with it was not for him in that place to affirm. It was impossible for the jury not to pay attention to the conduct of the prisoner before and after the death of Cook, and they would not fail to consider, as part of those circumstances, his very remarkable proceedings in reference to the betting-book, which had never been discovered.”
He then proceeded to consider the evidence tendered by medical and scientific experts for the defence.
“Then as to the evidence which had been put in for the defence, the jury had had before them gentlemen of great ability and high honour, who had given in detail the results of their experience. With that evidence he would now proceed to deal.” [The learned judge read in extenso the voluminous evidence of Mr. Nunneley, the surgeon, of Leeds.] “The jury had heard the manner in which Mr. Nunneley had given his evidence, and they must form their own opinion of it. Certainly he seemed to display an interest in the case not altogether consistent with the character of a witness. He differed very much from several witnesses who were examined for the prosecution, and particularly in reference to rigidity being produced by strychnia after death. These and similar questions were for the jury. The next witness who was examined was Mr. Herapath, of Bristol, a very eminent analytical chemist, who had paid great attention to the subject of poisons. That gentleman said that where there had been death by strychnia it ought to be discovered. But it appeared, on cross-examination, that he had expressed an opinion, on another occasion, that Cook died from strychnia, but that Dr. Taylor had not taken the proper means to find it. After adverting to the evidence of Mr. Rogers, his lordship read that of Dr. Letheby, of the London Hospital, the medical officer of the City of London, of whom he said that he seemed to prove that cases of this sort were very variable, and that he admitted that the Romsey case was an exception. Now, while these exceptional cases existed, it could hardly be said that the principles laid down by Dr. Letheby were sufficient to rebut the evidence in chief. His lordship next referred to Mr. Gay’s case of the omnibus conductor. This, he said, was a case of idiopathic tetanus. The jury would say, on comparing it with the symptoms in Cook’s case, whether his was also a case of idiopathic tetanus. The great weight of evidence seemed to show that Cook’s was not a case of idiopathic any more than it was a case of traumatic tetanus. Mr. Gay’s case differed altogether from that of Cook, and as far as he could see there was no analogy between them. Passing next to the evidence of Mr. Ross, and to his case of a man, who died from ulcers, his lordship remarked that he did not see why this case was brought before the Court unless to prove that Cook’s was of the same sort. This was a case, whether of idiopathic or traumatic tetanus, in which it was sought to prove that death was caused by bruises on the body. But there were no bruises of any sort about Cook, and therefore the analogy failed. In reference to the important evidence of Dr. Wrightson, who said he had detected strychnia in putrifying blood and decomposed matter, and that strychnia did not under such circumstances decompose, he must say that this witness was a scientific and honourable man, and had spoken throughout with proper caution. According to Dr. Wrightson, the discovery of the poison should have been proved, but at the same time his evidence did not overthrow the case for the prosecution; and it would be for the jury to say whether, in the event of poison actually being in the body, the tests employed to detect it were sufficient. Referring to the evidence of Mr. Partridge, his lordship said that the witness had stated that the symptoms in Cook’s case did not correspond with what he should have expected to have found from strychnia, but he spoke from his own experience, and he admitted that the symptoms were very variable; and he did not seem, therefore, to speak with any degree of certainty upon the subject. Mr. Gay’s case of a boy who suffered from tetanus from an injury to his toe was, his lordship thought, not at all analogous to that of Cook; nor was that of the young woman who had an attack of tetanus without any apparent cause, and recovered, as deposed to by Dr. McDonald. The last witness had given his opinion that Cook died from epileptic convulsions, accompanied with tetanic complications, and this he thought might have been produced by mental or sensual excitement. The jury would see to what length this witness went, and it would be for the jury to say what weight they attached to his evidence. Having adverted to several cases adduced by the defence, and which his lordship considered bore no analogy to Cook’s, he read the evidence of Dr. Robinson, of Newcastle-on-Tyne, who ascribed the death to epilepsy. He then passed on to Dr. Richardson, who narrated the particulars of a remarkable case of angina pectoris, to the symptoms of which disease he said Cook’s bore a remarkable resemblance. The witness, his lordship said, seemed a most respectable man, and he said that the symptoms in this case were consistent with those arising from strychnia, and that if he had known as much of strychnia at that time as he did now, he should have searched for it in that case. It would be for the jury to consider whether Cook’s symptoms were consistent with strychnia, and if so, that ought to lead them as to the opinion they should form on the case. His lordship having adverted to the evidence of Catharine Watson, the girl who was attacked with tetanus in Scotland, and to other witnesses who were recalled, said this was all the medical evidence that had been adduced by the counsel for the defence of the prisoner. But then, gentlemen, said Lord Campbell, comes that most important question, whether the symptoms of the deceased were consistent with death by poisoning with strychnia. You will say whether your opinion upon that subject is altered by the evidence given on the part of the prisoner. Several of the witnesses called by the prisoner seem to admit (although, of course, you will form your own judgment upon it) that those symptoms were consistent with strychnia, although, in the absence of evidence to show that strychnia was administered, they could not come to such a conclusion.”