The defendant’s first assignment of error is that the trial judge erred in permitting Brenda to testify as to other instances of sexual intercourse with the defendant and in permitting Theresa Sutton, Brenda’s younger sister, to testify as to acts of sexual intercourse between herself and the defendant. This testimony was introduced for purposes of corroboration, and the Supreme Court has long approved such testimony. In State v. Broadway, 157 N.C. 598, 72 S.E. 987, which was an incest case, Clark, C.J., stated:
“The exception to proof of other acts of the same nature cannot be sustained. They are competent in corroboration. . . .”
The first assignment of error is without merit.
 The defendant’s second assignment of error is that the trial judge erred in overruling the motion for judgment as of nonsuit. In his brief, it is frankly stated:
“Counsel for defendant does not wish to argue this exception. It was preserved and brought forward in the Record and Brief for defendant’s protection, he being an indigent defendant and counsel being court-appointed.”
We have reviewed the record, and the evidence was plenary to take the case to the jury. Nothing would be gained by a recitation of all of the sordid details.
The second assignment of error is without merit.
*666 [.3], The defendant's third assignment of error is that the trial judge erred in the instructions to the jury. It is argued that it was incumbent upon the trial judge, when recapitulating the evidence introduced by the State, again to inform the jury that certain evidence of some of the State’s witnesses was admitted solely for the limited purpose of corroboration.
At the time of its introduction, the trial judge unequivocally instructed the jury as to the limited purpose for which the corroborative evidence was admitted. In the absence of a request for special instructions, it was not error for the trial judge not to inform the jury again of the difference between corroborative and substantive evidence or of the limited purpose for which the corroborative testimony was admitted. Such an instruction would have pertained to a subordinate feature of the case. In the absence of a request for a special instruction, it was not necessary to charge on this subordinate feature. State v. Pitt, 248 N.C. 57, 102 S.E. 2d 410.
. . It is now the rule of practice with us that when testimony is admitted, not as substantive evidence, but in corroboration or contradiction, and that fact is stated by the court when it is admitted, it will not be ground for exception that the judge does not in his charge again instruct the jury specifically upon the nature of such exidence, unless his attention is called to the matter by a prayer for instruction; nor will it be ground for exception that evidence competent for some purpose, but not for all purposes, is admitted generally, unless the appellant asks, at the time of its admission, that its purpose be restricted for the use for which it is competent. . . .”
The third assignment of error is without merit.
The defendant was given a fair trial free of any prejudicial error.
MallaRD, C.J., and MorRis, J., concur.