First. Appellant, the deceased, and Lucy. Carrington, the prosecuting witness, were all negroes and were acquainted with еach other prior to the *date of the homicide. In the city of Oklahoma, in what is called “Packingtown,” there is a negrо hotel which had been conducted by the prosecuting witness, but which at the time of the homicide was being conducted by appellant. The state proved that on the day of the homicide Charles Lucas was' at this hotel for his washing; that while there a difficulty arose in which he lost his life at the hands of appellant. There was only one witness to the homicide besides aрpellant; that was Lucy Carrington. Her testimony, if believed by the jury, made out a case of murder. When she was on the stand testifying in behalf of the state, for the purpose of showing her interest in the trial and thereby affecting her credibility, counsel for appellant attempted upon cross-examination to prove that said witness was a married woman, was living separate and apart from her husband, and that for three weeks prior to the homicide she had been living with deceased, and occupying a bedroom with him as his wife. All this was objected to by counsel for the state upon the ground that it was not proper cross-examination. This objection was by the court sustained, to which counsel for appellant excepted.
The reason why the Constitution of the state provides that in all criminal cases the accused must be confronted by the wit *432 nesses who testify against him is that the defendant may exercise the right of cross-examination. The right of confrontation is given for the purрose of enabling a defendant to test the means of knowledge of a witness, his intelligence, the reliability of his memory, and his biаs, prejudice, or interest in the case. The right of proper cross-examination is everywhere recognized as one of the most important and valuable rights possessed by a defendant, and is just as important to him as the right to examine a witness against him in chief is to the state. Necessarily the object of cross-examination is to break or weaken the forсe of the testimony given by the witness on his examination. From this it follows that any matter which would have a tendency to lessen the сredibility of a witness is a proper matter of inquiry on cross-examination. The general rule, therefore, is that anything which tends tо show bias or prejudice on the part of the witness or anything which shows his friendship or enmity toward either of the parties is cоmmonly a proper subject of inquiry; so, also, is' anything which tends to show that in the circumstances in which he is placed he has а strong temptation to swear, falsely. The situation of the witness in regard to the result of the trial, his interest therein, or inclination fоr or against either of the parties may be shown. Mr. Wigmore says that the right of cross-examination is “beyond doubt the greatest lеgal engine ever invented for the discovery of the truth.” In the case at bar the witness, Uucy Carrington, was the only eyewitness introduсed for the state. It was principally on her testimony that the conviction of appellant was obtained. If it was true that she had abandoned her husband and was living with deceased as his wife, this fact would have a strong tendency to indicate bias on her part in favor of the deceased, and was therefore a proper subject of inquiry on behalf of apрellant. There was error in the action of the court in refusing to allow this inquiry to be made.
Second. Upon the trial of the cause, among other things, the court instructed the jury as follows:
“ * * * The court instructs you that, if you believe that any witness has wilfully testified falsely as to any material fact, *433 you are at liberty to disregard the testimony of such witness except in so far as the same mаy be corroborated by other credible evidence.”
In the case of
Charles Hast v. Territory,
If you believe from the evidence that any witness who has testified in this case has knowingly and corruptly sworn falsely to any material fact, then you may, if you think proper, reject the whole of the testimony of such witness, or you may give suсh weight to the testimony of such witness on other points as you may deem .it entitled to have. You are the sole judges of the credibility of the witnesses and the weight and value, to be given to their testimony.
See
Coleman v.
State,
infra,
The judgment of the lower court is therefore reversed, and the cause is remanded for a new tryial.
