tute an additional ground for reversal'of the judgment. The attorney general argues that the instruction is not erroneous, especially when read with the numerous correct instructions upon reasonable doubt. It deals only with the credibility of witnesses, he says, rather than with the burden of proof.
However, the instruction clearly transcends the bounds of one limited to the credibility of witnesses. It informed the jury that a verdict would be justified by the testimony of a single witness if the greater weight of all of the evidence was on the side of that witness as opposed to the greater number of witnesses. The result, in effect, was to tell the jury that it could convict if, from a preponderance of the evidence, it believed that a single fact was established by one witness.
A similar instruction was condemned in Long v. Standard Oil Co., 92 Cal.App.2d 455, 462 [207 P.2d 837], the court saying: “The words ‘would justify a verdict in accordance with such testimony’ have no proper place in a statement of the rule. As defendant correctly says, proof of a single fact would not warrant a verdict unless it was the sole determinative fact in the case.” However, under the circumstances of that civil case, in which the weight of the evidence was not questioned, the court held that the error was not prejudicial. But here the error must be related to a series of disputed facts, many of them resting upon the testimony of a single witness, which constituted the prosecution’s chain of circumstantial evidence. No single fact, in the chain is determinative.
This error must be considered in connection with the additional misstatement in the instruction that the determinative fact may be established simply by the greater weight of the evidence. Language similar to that here used has been held to be an incorrect statement of the law applicable in criminal cases. (People v. Ames, 61 Cal.App.2d 522, 534 [143 P.2d 92].) In the Ames case, however, the error appeared in one paragraph of a seven-page instruction, two and one-half pages of which were devoted to a correct statement of the doctrine of reasonable doubt. In addition, no consideration was given to the erroneous statement that proof of a single fact would warrant a verdict. Under those circumstances, the error was found not to be prejudicial.
When the combined errors in this instruction are related to the circumstances disclosed by this record, it becomes obvious that an irreconcilable conflict exists between the challenged instruction and the proper instructions upon circum