The defendants were tried and convicted of the crime of feloniously assaulting and carnally knowing a female child under the age of 16 years, MCLA § 750.520 (Stat Ann 1962 Rev § 28.788). Defendants contend that the court improperly charged the jury as to prior contradictory extrajudicial statements being substantive trial testimony and as to the people’s witnesses being declared hostile. A review of the trial court’s instructions reveals no reversible error.
The testimony of the prosecutrix and her mother, along with that of a medical witness, was sufficient to establish the essential elements of the crime and identify the defendants. The people were obliged to call three other witnesses as
res gestae
witnesses under
People
v.
Kayne
(1934),
All three of the res gestae witnesses had given statements with regard to the crime 4 days after its alleged occurrence. On the stand some inconsistencies developed between the testimony of two of the witnesses and their prior statements.
After laying a proper foundation as directed by
People
v.
Thomas
(1960),
The defendants claim that the trial judge erred in his instruction as to the use of the prior inconsistent statements. The trial judge said:
“The prosecutor is compelled in a crime of violence to put on the stand all eyewitnesses to the *613 crime who are available. He is not however bound to accept the testimony of such witnesses if contradictory to former testimony or former statements without attempting to bring out the fact that it is contradictory.
“However I must warn you that all of this proof, the former testimony, that is the testimony of the witness Wilma Brinkley and Stephanie Shirley, if you find they gave it, or statements made, is simply permitted for the purpose of impeachment, or whatever effect it may have in your minds when judging the credibility of the particular witnesses. It is not to be considered as substant [sic] proof against defendants here. It is produced and received by the court for the purpose and only for the purpose of impeaching a State witness who is hostile to the State. However, if you find that any witness who made a prior contradictory statement — answer or statement, stated at the trial, that if he or she said it was true, then prior contradictory answer does become substant [sic] trial testimony as I have explained before.”
Since “the sole purpose of impeachment is to vitiate a witness’ credibility,”
(People
v.
Eagger
[1966],
The trial court here properly instructed the jury as to the law on the impeachment of res gestae witnesses. The instruction, while unclear in itself, is not clearly contradictory and when read as a who]e *614 does not constitute an erroneous statement of the law. 2
“Jury instructions in a criminal case must be read in their entirety in order to determine whether prejudicial error was present.
People
v.
Smith
(1966),
The other alleged errors do not merit discussion. After a careful review of the record and issues on appeal we find no reversible error.
Affirmed.
Notes
The holding in a reeent ease decided by this Court,
People
v.
Virgil Brown
(1969),
Even if the instruction was in error, we consider that under the faets of this case, “that any instructional error did not contribute to the defendant’s conviction” and was therefore harmless error.
People
v.
Wichman
(1968),
