1 Minn. 125 | Minn. | 1854
By the Ooxvrt.
The first point made by the Plaintiffs in Error need not be considered, as the others are conclusive.
The evidence admitted by the District Court to prove the value of the services of the Plaintiff below, for which the action was brought, was manifestly incompetent. It was merely naked opinion, without knowledge, and that is never competent evidence.
The value of services upon a quantum meruit stands, in regard to the proof, upon the same principle as the value oí chattels upon a q%Mnt/um valebant. The value of chattels in such a case is always regulated by the usual or market value of such chattels, of like quality, at the time and place of sale; and before a witness can, in such a case, be permitted to testify to such value, it must appear by his own or other competent evidence that he knows with reasonable certainty what such usual or market value is. ITe then testifies to the value as a fact, and not as a mere matter of opinion. So in regard to services: it must appear that the witness knows the usual value of, or rate of compensation paid for such or the like services at the time when, and place vhere, they were rendered, before he can be properly permitted to testify what such value or rate is. ITe then testifies to such value or rate as a fact, and not as an opinion. A market value of property, or usual rate of compensation for services, proved tó a jury, furnishes a legal rule and guide to their j udgment; but a mere opinion, without knowledge, though sworn to before a j ury, communicates no information to them better than their Own. The opinions of the jurors themselves upon the same subject, would be just- as good, and perhaps better, without such testimony than with it. Lamoure vs. Caryl, 4 Denio’s R. 370; Fish vs. Dodge, ib. 311; Norman vs. Wells, 17 Wend. R. 136, 271.
It is a universal rule, that the Plaintiff in a suit at law is