delivered the opinion of the court.
The plaintiff in error, who was likewise the plaintiff below, sued the defendant in error in the Supreme Court of the District of Columbia to recover damages for personal injuries, sustained, as was alleged, through his neg.ligence in the making of certain X-ray tests -upon her
The case was submitted to the jury under instructions from the court, and they rendered a verdict in favor of the defendant. The plaintiff appealed to the Court of Appeals, where there was an affirmance (35 App. D. C. 57), and she sued out this writ of error.
The assignments of error present in effect but two questions—
1. The plaintiff requested the trial court to instruct the jury as follows:
“If you believe upon the evidence that in the course of the operation of the X-ray apparatus by the defendant the plaintiff was burned, that fact is of itself evidence of negligence on his part, and casts upon him the burden of proving, if he can, by a preponderance of evidence, that the plaintiff’s injury was not caused, in whole or in part, by his negligence, and in such c^se, unless you find by a preponderance of the evidence that said injury was not caused in whole or in part by the defendant’s negligence, your verdict should be for the plaintiff.”
The trial judge refused this request, and on the contrary instructed the jury — “That the burden of proof is upon the plaintiff to establish by a fair preponderance of the evidence that the burn upon her back was caused by negligence on the part of the defendant in the manner in which he subjected her to exposure by the X-ray.”
The contention in behalf of the plaintiff is that since the injury to the plaintiff was caused by an agency in the
In the view we take of the matter, it is not necessary to pass upon the question whether the evidence presented a case for the application of the rule res ipsa loquitur; for the reason that in cases where that rule does apply, it has not the effect of shifting the burden of proof.
The general rule in actions of negligence is that the mere proof of an “accident” (using the word in the loose and popular sense) does not raise any presumption of negligence; but in the application of this rule, it is recognized that there is a class of cases where the circumstances of the occurrence that has caused the injury are of a character to give ground for a reasonable inference that if due care had been employed, by the party charged with .care in the premises, the thing that happened amiss would not have happened. In such cases it is said,
res ipsa loquitur
— the thing . speaks for itself; that is to say, if there -is nothing to explain or rebut the inference that arises from the way in which the thing happened,
The doctrine has beeh so often invoked to sustain the refusal by trial courts to non-suit the plaintiff or direct a verdict in favor of the defendant, that the application of the rule, where it does apply, in raising a question for the jury, and thus making it incumbent upon the defendant to adduce proof if he desires to do so, has sometimes been erroneously confused with the question of the burden of proof. But in the requested instruction now under consideration the matter was presented in no equivocal form. Plaintiff’s insistence was not merely that the evidence of the occurrence of the injury under the circumstances was evidential of negligence on defendant’s part, so as to make it incumbent upon him to present his proofs; the contention was that it made it necessary for him to prove by a preponderance of the evidence that there was an absence of negligence on his part.
In
Stokes
v.
Saltonstall
(1839),
In our opinion, res ipsa loquitur means that the facts of the occurrence warrant the inference of negligence, not that they compel such an inference; that they furnish circumstantial evidence of negligence where direct evidence of it may be lacking, but it is evidence to be weighed, not necessarily to be accepted as sufficient; that they call for explanation or rebuttal, not necessarily that they require it; that they make a case to be decided by the jury, not that they forestall the verdict. Res ipsa loquitur, where it applies, does not convert the defendant’s general issue into an affirmative defense. When all the evidence is in, the question for the jury is, whether the preponderance is with the plaintiff.
Such, we think, is the view generally taken of the matter in well-considered judicial opinions.
Kay
v.
Metropolitan St. Ry. Co.,
2. The sole remaining question is raised by the refusal of the trial court to instruct the jury, as prayed by the plaintiff, in the following terms: “If you believe upon the evidence that in the ordinary and careful operation of the X-ray apparatus upon a woman by an operator having the requisite knowledge and skill enabling him to operate it with the utmost degree of safety there is a possibility, which could not be foreseen by such an operator, of injury to the woman by reason of her condition or of any matter tending to predispose her to injury in consequence of such operation and that such possibility was known to the defendant or by proper inquiry or study should have been known to him, it was his duty to inform the plaintiff of such possibility before he operated upon her; and if you further believe upon the evidence that he failed to perform such duty, or that in the performance of the operation he failed to exercise the skill and care required of him as such operator, and that the plaintiff was thereby injured, your verdict should be for the plaintiff.” The terms of this request are self-contradictory and confusing — dealing, as it does, with a possibility of injury to the plaintiff “which could not be foreseen” by the defendant, and combining inseparably with it the hypothesis that “such possibility was known to the defendant or by proper inquiry or study should have been known to him” — and for this reason alone it was properly rejected by the trial court. But, besides this, it does not appear that there was any evidence on which the jury could properly base a finding that there was danger of injury to the plaintiff by reáson of her condition or of any other matter tending to predispose her to such injury; nor to sustain a finding that such possibility was known to the defendant, or by proper study or inquiry should have been known to him. Nor could it be
No error being found in the record, the judgment is
Affirmed.
