The appellant was indicted for murder in the first degree, tried, and convicted of murder in the second degree.
In the trial court the defendant made a motion, that it strenuously insisted upon in briefs filed here, to quash the indictment, based on the misconduct of an attorney, -employed to assist in the prosecution, going before the grand jury while it was engaged in deliberating on the case. It is alleged as grounds for the motion that the attorney made improper statements to the grand jury that influenced or induced the.grand jury to return the indictment against the defendant. This motion is shown *78not to have been made until after the defendant had been arraigned and pleaded to the merits of the indictment, and was within the discretion of the trial court and not reviewable here. — Hubbard v. State, 72 Ala. 164; Davis v. State, 131 Ala. 10, 31 South. 569; Thayer v. State, 138 Ala. 39, 35 South. 406; Rogers v. State, 166 Ala. 10, 52 South. 33.
The question is not before this court for the additional reason that the court’s ruling on the motion is not shown by a judgment entry set out in the record, but only by the recitals contained in the bill of exceptions. —Garrett v. State, 97 Ala. 18, 14 South. 327; Conway v. Clark, 171 Ala. 391, 55 South. 117. The transcript shows nearly 100 exceptions to the rulings of the trial court on the admission and rejection of evidence, and 84 assignments of error have been written upon the transcript by appellant’s counsel, but, after reading the voluminous record and briefs, and giving careful attention to the matters presented, we do not deem it beneficial, or that it would serve any proper purpose to enter into a discussion of each of these matters in detail.
The deceased was a married woman who lived at home with her husband. It seems to be the theory of the state, to be gathered from the evidence, that it relied upon showing, as a motive for the killing, that the defendant was angered, or made jealous, by the attentions of one Hub Patrick to the deceased. Patrick, as. a witness for the state, testified to a difficulty he had with the defendant on the night of, but some two hours before, the killing, that took place in the yard of the house of the deceased, near a window from which the deceased heard and saw part of the altercation, at a time when her husband was not at home — a fact which, it seems, was known to both men before going to the home of the deceased. After proving the fact that the defendant *79had a difficulty with Patrick at this time, under these circumstances, the state was allowed, against numerous objections made and exceptions reserved by the defendant, to go into the details of the difficulty, and show by Patrick that the defendant jerked him over and cursed him, calling him by vile names, and threatening to kill him; that the defendant choked him until he could not speak, and hit him three or four times in the face with his fist; that after the defendant jerked him over flat on his back he got astride of him and hit him; that the defendant informed the deceased, who had come to the window of her house, that he intended to kill him (Patrick), using oaths in connection with the threat; that upon the deceased’s telling them to leave, the defendant got off of him, and that he went under the house to get away from the defendant. The evidence in behalf of the state showed that the defendant left the premises of the deceased after this occurrence, and that the killing did not take place until some two hours afterwards, when, it is the contention of the state, he had returned to the home of the deceased. It was the theory of the defense that the defendant was a friend of the husband of the deceased, and that after the occurrence with Patrick at the home of deceased he left, and that the deceased, in an hour or two thereafter, committed suicide.
The difficulty between the defendant and Patrick cannot be said, under the circumstances shown, to constitute a part of the res gestae of the act of homicide; it did not constitute one continuous transaction with it, nor was it substantially contemporaneous, so as to make the details of this difficulty with a third party admissible as illustrating the character of the main fact, or crime charged. — State v. Stallings, 142 Ala. 112, 38 South. 261. The fact, general nature, and occasion of a former difficulty between the defendant and Patrick *80was, of course, admissible to support the theory of the state in tending to show a motive actuating the defendant in the commission of the crime charged against him, and to show that the defendant entertained animus or ill will against the deceased, growing out of, or based on, feelings of jealousy. But the details of the encounter would not furnish a reason or show a motive for the homicide, or tend to explain or illustrate its character— would not have any legitimate tendency to establish the theory of the state, and is so far separated from the act charged, as to time, circumstance, and person, as to constitute no part of the res gestae of that act. — Garrett v. State, 76 Ala. 18; Still v. State, 91 Ala. 10, 8 South. 669, 24 Am. St. Rep. 853; Jones v. State, 76 Ala. 9; Quin v. State, 1 Ala. App. 116, 55 South. 450.
It is insisted by the state’s counsel in brief that, as the defendant subsequently testified about this difficulty and went into the particulars, the error in admitting the details of the difficulty when testified to by the state’s witness Patrick, against the defendant’s objection, was cured. This argument is fallacious in more than one aspect. Non constat the defendant would not have testified as to the details of this difficulty if he had not been forced to do so because of the testimony of Patrick as to these matters previously admitted against his objection; and then, too, the details of the difficulty as subsequently narrated by the defendant when testifying as a witness in his own behalf differed with respect to the detailed particulars of the difficulty as testified to by the witness Patrick, and it may he that the jury believed the details as narrated by the witness Patrick, and did not believe the defendant’s testimony on this point, and, adopting “falsus in uno, falsus in omnibus,” as applied to the defendant’s testimony, discredited the defendant’s testimony as to material and vital matters testified to by *81him, in which he denied having any connection with the commission of the offense charged against him, and solely because of this variance between his testimony and the testimony of the witness Patrick on the illegally admitted evidence. The evidence relied upon for a conviction, aside from the testimony of a nine-year-old child of the deceased, that, according to the testimony of several of the defendant’s witnesses, had made several contradictory statements about the matter, was entirely circumstantial in its nature, and ive are unable to say, under such a state of conflicting evidence as is shown by this record, that the defendant was not prejudiced by the admission of the illegal evidence relating to the details of a difficulty with a third party, as testified to by that party, against the defendant’s objections and duly reserved exceptions to the court’s rulings in admitting such matters in evidence.
It was proper to permit the state’s witness Mrs. Willis to testify that the deceased, Mrs. Griffin, was “about 25 or 30 years old — about there. She was comparatively young.” Mrs. Willis was shown to be a neighbor, and knew and had opportunity of observing the deceased and forming a comparative judgment with respect to her age. It was the theory of the state that because of illicit sexual relations existing between the deceased and the defendant, or sought by the latter, a motive for the crime charged against the defendant was to be found, and it was, for this reason, competent to show that the deceased was within that age limit when she would be in possession of charms and capabilities making her physically attractive in such a way to the defendant. The cases cited by the defendant on this proposition are not in point. When the exact age of a person is in issue, it should not be testified to by a witness except that such witness be shown to be fully qualified to state facts, or *82to give an opinion and state his judgment based bn expert knowledge or long acquaintance with the person, but we doubt not the admissibility of evidence of the judgment of a witness to be taken into consideration who knows and has observed a person, as to the person’s apparent or relative age, whether old or young, or as appearing to be “about 25 or 30 years of age,” when the relative, comparative, or generally apparent age of a person is a proper matter to be proven under the issues of the case, just as it would be proper for the court or jury to inspect the person for the same purpose. However, the question will probably not arise upon .another trial, as the safer practice would be to make this proof by a witness of whose competency to testify to this matter there would be less question, and whose evidence would be more satisfactory and convincing.
If the statements made by the defendant to the witnesses Tom David and J. C. Brunson are to be regarded as inculpatory, nevertheless they were not rendered inadmissible because of the fact that the defendant was under arrest at the time (Jackson v. State, 167 Ala. 42, 49, 52 South. 835), but it should have been made to appear that the statements were voluntarily made. And this is also true with respect to proving admissions or inculpatory statements made by the defendant on his preliminary trial and habeas corpus proceedings, when in custody, under arrest charged with the crime. It cannot be said to appear circumstantially that admissions made under such circumstances were voluntary. They are prima facie inadmissible, and before receiving them the court should carefully inquire into whether or not they were voluntarily made. — Wright v. State, 3 Ala. App. 24, 32, 58. South. 68, and authorities there cited.
*83The statements made by the defendant at the coroner’s inquest, if improperly admitted, Avere afterwards excluded by the court, and the error, if any, cured.
The child Clayton Griffin (but little under 10 years of age) on his voir dire examination Avas shoAvn to have sufficient appreciation as to future rewards and punishments pertaining to false swearing to make him competent to testify as a witness. The examination did not' divulge an intellectual or moral deficiency that would disqualify him. — McGuff v. State, 88 Ala. 147, 7 South. 35, 16 Am. St. Rep. 25; Williams v. State, 109 Ala. 64, 19 South. 530.
The mere fact that the witness Matheny was a physician did not necessarily, of itself, without' more, and when it was not made to appear that he had had experience, show him to be qualified as an expert to give his opinion on how close the gun was to the deceased when the shot was fired, and the court committed no error in refusing to admit this evidence as competent expert opinion testimony. A witness, to testify as an expert, must first be shown to be such. — 6 Mayf. Dig. 344, * 180.
It was proper for the state to show, on cross-examination by the defendant’s witness Dr. Johnson, that he had endeavored to stop the investigation into the killing, for the purpose of showing his interest, prejudice, or bias as. a witness.
We hardly think the witness J. F. Johnson was shown to have sufficient knowledge on the subject to answer as an expert the hpyothetical questions that he was permitted to answer against the objection of the defendant. His experience and observation seemed principally limited to the modern arms used in warfare, and he was shoAvn to have had but little knowledge, if any, of a weapon like the one with which the deceased was killed —a short, single-barreled shotgun. His opinion must *84necessarily have been based upon a species of knowledge variant from the facts hypothesized, and consequently variant from that knowledge which the law requires as a qualification of one who gives his opinion as an expert.
It was also improper to submit to the jury the opinion of this witness as an expert as to the effect, extent, and force of the rebound of a gun when the muzzle is placed against an object at the time the gun is fired. It was not shown or insisted, nor were there circumstances proven from which it could be reasonably and fairly inferred, that the muzzle of the gun was placed against any object when it was fired, so as to cause a rebound from the object. It was the defendant’s theory that the deceased committed suicide by placing the muzzle of the gun in close proximity to her person and springing the trigger with a stick of wood that was found close by her dead body, but there was no insistence or contention, and no evidence before the court that would fairly support the inference, that the muzzle was placed against the body. The muzzle of the gun having been found clasped in the hand of the deceased, it was prejudicial to the defendant to introduce expert opinion testimony of this nature based on an abstract proposition, not an issue in the case, not supported by the testimony, and having a natural tendency to produce the impression on the minds of the jui’y that the rebound of the gun when fired would have been sufficient, if fired by deceased in suicidal act, to break her grasp upon the weapon, The state cannot thus be permitted to set up a theory of defense for the defendant against his objection, make it an issue without evidence to support it, and then demolish the straw theory and foreign issue, thus injected to the prejudice of the defendant, by expert opinion testi'mony.
*85Charge No. 13, refused to the defendant, was well refused in the light of the testimony of the witness Clayton Griffin, and, besides, it states no proposition of law, and the court was under no duty to give it. — Lewis v. State, 178 Ala. 26, 59 South. 577.
Charge 28 has been many times, subsequent to the cases cited by defendant’s counsel in brief, condemned as argumentative and an improper instruction to give to a jury in a homicide case. — Leonard v. State, 150 Ala. 89, 43 South. 214.
As applied to the facts of the case, refused charge Y is covered by given charge S; but we are not to be understood as ‘ approving the charge. — See Compton v. State, 110 Ala. 24, 20 South. 119, where a charge very similar was condemned.
The correct propositions contained in other refused instructions are fully covered by the charges given at the defendant’s request.
We have discussed all the matters insisted upon by counsel in briefs as showing error. An examination of the whole record shows no other reversible error, but the judgment must be reversed for those errors committed on the trial of the case that we have pointed out.
Beversed and remanded.