The Art of Cross-Examination / With the Cross-Examinations of Important Witnesses in Some Celebrated Cases

by Francis L. Wellman

On the other hand, some careful and judicious questions, seeking to bring out separate facts and separate points from the knowledge and experience of the expert, which will tend to support the theory of the attorney's own side of the case, are usually productive of good results. In other words, the art of the cross-examiner should be directed to bring out such scientific facts from the knowledge of the expert as will help his own case, and thus tend to destroy the weight of the opinion of the expert given against him.

Another suggestion which should always be borne in mind is that no question should be put to an expert which is in any way so broad as to give the expert an opportunity to expatiate upon his own views, and thus afford him an opportunity in his answer to give his reasons, in his own way, for his opinions, which counsel calling him as an expert might not otherwise have fully brought out in his examination.

It was in the trial of Dr. Buchanan on the charge of murdering his wife, that a single, ill-advised question put upon cross-examination to the physician who had attended Mrs. Buchanan upon her death-bed, and who had given it as his opinion that her death was due to natural causes, which enabled the jury, after twenty-four hours of dispute among themselves, finally to agree against the prisoner on a verdict of murder in the first degree, resulting in Buchanan's execution.

The charge against Dr. Buchanan was that he had poisoned his wife—a woman considerably older than himself, and who had made a will in his favor—with morphine and atropine, each drug being used in such proportion as to effectually obliterate the group of symptoms attending death when resulting from the use of either drug alone.

At Buchanan's trial the district attorney found himself in the extremely awkward position of trying to persuade a jury to decide that Mrs. Buchanan's death was, beyond all reasonable doubt, the result of an overdose of morphine mixed with atropine administered by her husband, although a respectable physician, who had attended her at her death-bed, had given it as his opinion that she died from natural causes, and had himself made out a death certificate in which he attributed her death to apoplexy.

It was only fair to the prisoner that he should be given the benefit of the testimony of this physician. The District Attorney, therefore, called the doctor to the witness-stand and questioned him concerning the symptoms he had observed during his treatment of Mrs. Buchanan just prior to her death, and developed the fact that the doctor had made out a death certificate in which he had certified that in his opinion apoplexy was the sole cause of death. The doctor was then turned over to the lawyers for the defence for cross-examination.

One of the prisoner's counsel, who had far more knowledge of medicine than of the art of cross-examination, was assigned the important duty of cross-examining this witness. After badgering the doctor for an hour or so with technical medical questions more or less remote from the subject under discussion, and tending to show the erudition of the lawyer who was conducting the examination rather than to throw light upon the inquiry uppermost in the minds of the jury, the cross-examiner finally reproduced the death certificate and put it in evidence, and calling the doctor's attention to the statement therein made—that death was the result of apoplexy—exclaimed, while flourishing the paper in the air:—

"Now, doctor, you have told us what this lady's symptoms were, you have told us what you then believed was the cause of her death; I now ask you, has anything transpired since Mrs. Buchanan's death which would lead you to change your opinion as it is expressed in this paper?"

The doctor settled back in his chair and slowly repeated the question asked: "Has—anything—transpired—since—Mrs. Buchanan's—death—which—would—lead—me—to—change—my— opinion—as—it—is—expressed—in—this—paper?" The witness turned to the judge and inquired if in answer to such a question he would be allowed to speak of matters that had come to his knowledge since he wrote the certificate. The judge replied: "The question is a broad one. Counsel asks you if you know of any reason why you should change your former opinion?"

The witness leaned forward to the stenographer and requested him to read the question over again. This was done. The attention of everybody in court was by this time focussed upon the witness, intent upon his answer. It seemed to appear to the jury as if this must be the turning point of the case.