(Syllabus.)
1. Homicide — Self-Defense — Reasonable Grounds for Believing Killing Necessary — Question for Jury. The bare belief of one assaulted that he is about to suffer death or great bodily injury will not, in itself, justify him in taking the life of his adversary. There must exist reasonable ground for such belief at the time of the killing, and the existence of such ground is a question of fact for the jury.
2. Same — Sufficiency of State's Evidence to Withstand Demurrer. If there is any substantial evidence tending to prove the guilt of the accused, the question is properly for the jury, and a demurrer to the evidence, under such circumstances, is properly overruled.
3. Same — Evidence of Conduct of Defendant Shortly Before Homicide Competent to Show His State of Mind at Time of Killing. Evidence of the actions, conduct, and general demeanor of defendant a short time prior to the commission of the homicide is competent as tending to show the state of mind of defendant at the time of the killing.
4. Trial — Exclusion of Evidence Merely Cumulative not Error. The exclusion of evidence which is proved by other evidence, and is only cumulative, and would not change the results of the trial, is not error.
5. Homicide — Self-Defense — Vague Threats of Deceased Inadmissible. Vague, indefinite threats of the deceased, not mentioning the accused, nor shown to have reference to him, are inadmissible in a prosecution for homicide upon the question of self-defense.
6. Same — Engaging in "Mutual Combat" Preventing Invoking of Doctrine of Self-Defense. One who enters willingly into a combat and fights willingly, not for his own protection, but to gratify his passion by inflicting injury upon his adversary, engages in mutual combat.
7. Trial — Sufficiency of Instruction Covering Theory of Defense. It is the duty of the court to give a clear, concise instruction covering defendant's theory of the case, as revealed by his testimony, but it is not necessary, after the court has so instructed the jury, to particularize on defendant's evidence.