¶1The opinion of the court was delivered by
¶2We construe the exceptions to mean, in effect, that the court ruled as matter of law that Dr. Ray’s testi*454mony did not tend to show that he was a medical expert, competent to testify his opinion whether the defendant was able to have begotten the child at his age and in his physical condition. .
¶3The reasons given for excluding the witness were, that his knowledge upon the subject was derived from reading and not from experience, and that he could state nothing positive without a microscopic examination, which he had not made.
¶4Neither of these reasons is sound. Knowledge derived from reading and study alone is enough. 66 Am. Dec. 234, note. Nor was it necessary for the witness to be able to give accurate information, like that obtainable from a microscopic examination. In many matters pertaining to medical science, accurate information is not obtainable, and opinion is the best that can be had, which, from the very nature of the thing, must be more or less uncertain and unreliable. But that does not go to the competency of the testimony, but only to its weight. Nor does it preclude opinion because something more certain and reliable can be had in the given case. That fact, also, would go to weight and not to competency.
¶5But if it appears from the whole record that the witness was rightly excluded, it was not error to exclude him for unsound reasons. Defendant claims that the exclusion was right, for that the subject is not one upon which expert testimony is admissible. 'But we think it is. The competency of expert testimony in a particular case depends upon whether or not any peculiar knowledge, science, skill, or art, not possessed by ordinary men, is necessary to the intelligent understanding and determination of the question involved. The rule is stated thus in many of the books : “ Whenever the matter of inquiry is such that inexperienced persons are unlikely to- prove capable of forming a correct judgment upon it, or, in other wor.ds, when it so far partakes of the nature of a science or a trade as to require a previous habit of experience or study in order to the attainment of a knowledge of it, the opinion of experts is admissible.’
¶6*455It is clear that the matter of inquiry here comes within this rule, and that it is a subject upon which' expert testimony is admissible.
¶7We consider this exception in the aspect the question assumed below, without reference to whether physicians and surgeons are experts as matter of law or not.
¶8The question made by the exception to the charge does not inhere in the case, and will not probably arise in it again, therefore we say nothing about it.
¶9Judgment reversed and cause remanded.