Kempsey v. McGinniss

21 Mich. 123, 1870 Mich. LEXIS 78
CourtMichigan Supreme Court
DecidedJuly 7, 1870
StatusPublished
Cited by73 cases

This text of 21 Mich. 123 (Kempsey v. McGinniss) is published on Counsel Stack Legal Research, covering Michigan Supreme Court primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Kempsey v. McGinniss, 21 Mich. 123, 1870 Mich. LEXIS 78 (Mich. 1870).

Opinion

Christiancy, J.

The question in this case was upon the validity of a paper claimed by the appellees — the proponents — as the last will and testament of Thomas Patterson, deceased.

The main ground upon which its validity was assailed was, that at the time it was drawn and executed, the testator was not of sound and disposing mind and memory; but that his mental faculties were so far enfeebled and overcome by disease as to render him incapable of properly understanding his relations to others, their relative claims upon his bounty, the particulars of his property, and the nature of the dispositions made by the will.

It was not claimed that he had ever exhibited any symptom of insanity or any weakness of intellect until after he was attacked with the disease of which he died, which was pneumonia or pleuro-pneumonia. This attack was some two days before the will was made, and he died on the night of the succeeding day.

The will was drawn up by one Clark, in the room and in the presence of the testator, under such directions and instructions as the testator gave him at the time, which [137]*137occupied from nine to eleven o’clock A. m. of Friday, when it was executed. It was duly witnessed by Clark and by Doctor Abbott, a physician who had been that morning called to see him, and who saw him for the first time during his sickness when called in to witness the execution, but remained with him a large part of the day. Another physician, Doctor Mottram, was called about the middle of the next day.

These were the only physicians (as far as appears) who saw him during his sickness. They, and several unprofessional witnesses, testified fully from their personal observation, as to his physical and mental condition at the respective times when they saw him, giving their opinions as to the condition or state of his mental powers, and the facts upon which their opinions were founded.,

No controversy arises upon the questions touching mental capacity put to any of the witnesses testifying from their personal observation alone. But the contestants offered in evidence the opinions of several professional witnesses who had not seen the testator during his illness; and upon the proper mode of conducting such an examination some of the main-questions in the case arise.

"We consider it too well settled to require the citation of authorities, that,‘upon questions of this kind, the opinions of men skilled in that particular science, in other words, physicians, are admissible in evidence, though not founded upon their own personal observation of the facts of the particular case. But, if the question had not already been closed by authority, I should be much inclined to doubt the propriety of receiving the opinions of merely medical witnesses, under such circumstances, to anything more than physical facts, such as the physical effects of the disease; as I think it may well be doubted whether the skill of ordinary physicians in metaphysics, or their judgment upon [138]*138merely mental manifestations, has been shown by experience to be of any greater value than that of intelligent men in other departments of life. The question, however, seems to be settled in their favor upon authority.

But in the case of such professional witnesses, as well as in that of unprofessional witnesses, — who are allowed to give their opinions only from personal observation, — the facts upon which the opinion is founded must be stated, and the jury must be left to determine whether the facts stated, as well as the opinions based uj)on them, are true or false. And it is obvious that when such opinions are given without personal knowledge or observation, such opinions must be based either upon facts observed and stated by other witnesses who knew them, or upon a state of facts assumed for the purpose as a hypothetical case, which the jury may find from the evidence.

But as the jury are to pass upon the credibility of all witnesses and the weight of the evidence, and to determine all matters of fact involved in the case, no witness can have the right to usurp the power of the jury, or to determine any of these questions for them, nor even to give an opinion upon the weight or credibility of any of the testimony. No question, therefore, can be put to the witness which calls upon or allows him to decide upon the truth or falsehood of any evidence in the case. If, therefore, there be any conflict between the witnesses as to the facts upon which a professional opinion is sought, it is manifest the professional witness cannot, though he has heard the testimony, be asked to base his opinion upon that testimony, upon the hypothesis of its truth; because, to reach his conclusion, he must necessarily pass upon the credibility of the witnesses and the weight of the evidence. In the case of any such conflict, therefore, the only proper mode of interrogating the professional witness, is by stating [139]*139and enumerating in the question itself, the facts to be assumed. And when his opinion is asked upon a case (such as the physical or mental effects of a disease upon a certain person, under certain circumstances and exhibiting certain symptoms), as stated by other witnesses, when there is no conflict, he is to assume, without undertaking to decide, the truth of their statements, and to base his opinion only upon the facts thus assumed, leaving the jury to determine whether such assumed facts are true or false.

Now, it is manifest that this is but giving an opinion upon a hypothetical case, as much as if the facts testified to by the other witnesses had been expressly and hypothetically assumed and enumerated in the question itself. And it would seem, from the nature of the case, to be impracticable to frame any proper question for eliciting the opinion, which is not in the nature of a hypothetical case, being based upon an assumed state of facts which the jury may, or may not, find to be true. And as a collection or state of facts assumed, whether few or many, constitute in the aggregate, the basis on which the opinion is asked; if it does not appear that the opinion would be the same, with any of those facts omitted, it necessarily follows that, if the jury should negative or fail to find any one of the assumed facts, the opinion expressed cannot be treated as evidence, but must be rejected by the jury.

From these considerations it' necessarily follows that the jury should know just what facts are assumed, and enter into the collection or state of facts upon which the witnesses’ opinions are based. Otherwise they cannot know whether they ought to treat the opinions as evidence at all; since they can form no opinion whether such assumed facts, or the opinions based upon them, are true or false.

If one or more witnesses have stated, in the presence and hearing of the professional witness, the facts observed [140]*140(such as the symptoms of the person in question, and his various physical and mental manifestations), and the witness is asked his opinion upon the hypothesis that all the facts stated by the witness or witnesses named are true, the jury, having heard all the evidence alluded to, know what facts are assumed by the witness in giving his opinion. But if the witness be asked his opinion of a case, assuming the testimony of certain specified witnesses to be true, and it appears that he did not hear the whole

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Bluebook (online)
21 Mich. 123, 1870 Mich. LEXIS 78, Counsel Stack Legal Research, https://law.counselstack.com/opinion/kempsey-v-mcginniss-mich-1870.