Defendant requests your Honor to charge the jury that, the defendant being charged with the crime of murder, the commonwealth is bound to prove every and all the essential facts necessary to constitute this crime beyond a reasonable doubt before the jury can convict the defendant of the crime charged in the indictment. VI Defendant requests your Honor to charge the jury that, upon the whole case, if the commonwealth has failed to prove all of the facts beyond a reasonable doubt, the defendant is entitled to be acquitted. VII Defendant requests your Honor to charge the jury that the burden in this case rests with the commonwealth, from the beginning to the end of the trial, to establish, beyond a reasonable doubt, every fact essential to the conviction of the defendant, and if the commonwealth has failed to prove such charge beyond a reasonable doubt, the defendant is entitled to an acquittal. VIII Defendant requests your Honor to charge the jury that the unintentional killing of a human being by another without motive, intent, premeditation, is neither murder nor manslaughter. IX Defendant requests your Honor to charge the jury that the questions of deliberation and premeditation, intent and motive, are purely questions of fact, to be determined by the jury from the evidence alone. X Defendant requests your Honor to charge that if the jury cannot say, beyond a reasonable doubt, that the defendant was sane at the time of the commission of the act, and cannot say whether, at that time, he was sane or insane, the defendant must be acquitted. XI Defendant requests your Honor to charge the jury that if, at the time the defendant committed the act charged against him, upon seeing the deceased, he was thrown into a state of mind from which he was deprived of his understanding, so as to be unaware of the nature and quality of the act he committed, or so as to be unable to distinguish between right and wrong in reference to that particular act at the time of its commission, this defendant must be acquitted. XII Defendant requests your Honor to charge the jury that, although sanity is assured and presumed to be the normal and natural state of the human mind, when imbecility is once shown to exist in a person, it is presumed to exist and continue until the presumption is overcome by contrary or repelling evidence proving sanity. XIII Defendant requests your Honor to charge the jury that if defendant was deprived of his reason at the time the act charged against him was committed, and which resulted from a settled and well-established mental alienation, or from the pressure and overpowering weight of circumstances occurring before and at the time of the commission of said act, the said defendant is legally irresponsible for it and must be acquitted. XIV