Answer.—“I have thought much upon that question, and have not formed a decided opinion, but I am inclined to think that it is so. A part may be absorbed and a part remain in the stomach unchanged.”
Mr. Serjeant Shee.—“What chymical reason can you give for your opinion that strychnia, after having effected the operation of poisoning, ceases to be strychnia in the blood?”
Answer.—“My opinion rests upon the general principle that, in acting upon living bodies, organic substances—such as food and medicine—are generally changed in their composition.”
Mr. Serjeant Shee.—“What are the component parts of strychnia?”
Mr. Baron Alderson.—“You will find that in any cyclopædia, brother Shee.”
Mr. Serjeant Shee.—“Have you any reason to believe that strychnia can be decomposed by any sort of putrefying or fermenting process?”
Witness.—“I doubt whether it can.”[42]
ANALYTICAL EVIDENCE.
On the fifth day, the late Doctor Alfred Swaine Taylor, the well-known Analytical Chemist and Author of “Medical Jurisprudence” (the text-book of the legal profession in all criminal investigations), Doctor Owen Rees, now one of the physicians extraordinary to her Majesty, and the late Professor Brande, of the Royal Institution, were called as witnesses. By the two first, the analytical examination of the various parts of Mr. Cook’s body had been conducted, and they had made a joint report of the results. By the last, that report had been carefully examined, and he had also heard all the evidence as to symptoms previously given in the case. No inconsiderable portion of the cross-examination of Dr. Taylor was occupied by questions connected with the publication, in the Illustrated Times, by Mr. Augustus Mayhew, of what professed to be statements as to the details of their analysis by Dr. Taylor and Dr. Rees, in which, if correctly reported, the former had committed himself somewhat prematurely to opinions on the case, and had used expressions towards the prisoner which, to say the least, were not discreet. Dr. Taylor, however, stoutly maintained that he had not used many of the expressions objected to; that the opportunity of interviewing him, after the American fashion, had been unfairly obtained, and the pretended report published not only without, but contrary to, his expressed wish. Except, however, as throwing a shade of partisanship over his conduct, and so far lessening the value of his evidence, the whole episode was useless to the defence—perhaps, to a certain extent, injurious. Dr. Taylor had been hasty and injudicious, and undoubtedly taken at an advantage by the energetic reporter, who certainly obtained his interview with him by pretences not strictly true.[43] With these remarks, due to Dr. Taylor’s reputation and abilities, we proceed to give his evidence.
Dr. Alfred Swaine Taylor, examined by the Attorney-General.—“I am a fellow of the College of Physicians, lecturer on medical jurisprudence at Guy’s Hospital, and the author of the well-known treatise on poisons and on medical jurisprudence. I have made the poison called strychnia the subject of my attention. It is the produce of the nux vomica, which also contains brucia, a poison of an analogous character. Brucia is variously estimated at from one-sixth to one-twelfth the strength of strychnia. Most varieties of impure strychnia that are sold contain more or less brucia. Unless, therefore, you are certain as to the purity of the article, you may be misled as to its strength. I have performed a variety of experiments with strychnia on animal life. I have never witnessed its action on a human subject. I have tried its effects upon animal life—upon rabbits—in ten or twelve instances. The symptoms are, on the whole, very uniform. The quantity I have given has varied from half a grain to two grains. Half a grain is sufficient to destroy a rabbit. I have given it both in a solid and liquid state. When given in a fluid state it produces its effects in a very few minutes; when in a solid state, as a sort of pill or bolus, in about six to eleven minutes. The time varies according to the strength of the dose, and also to the strength of the animal.”