the testimony of both agents at the trial that when the unidentified man drove off in the white Thunderbird they followed in a Government vehicle and found the Thunderbird parked opposite Manfre-donia’s house.
Upon close examination, however, this discrepancy in the testimony is not as significant as appellant would have us believe. Peden’s memorandum of activities for the day in question, made right after the events, records that he and Trerotola had followed the white Thunderbird and observed it in front of Manfredonia’s residence, which verified the trial testimony. At the trial this memorandum, together with a copy of the grand jury testimony of these agents, was made available to the defense. Although he had the opportunity, defense counsel did not use any of this material to impeach Peden.4 Finally, the portion of Peden’s grand jury testimony referred to is part of a long narrative answer that was not interrupted by specific questions. In light of these facts it is obvious that, while before the grand jury, Peden simply neglected to relate the side excursion to follow the white Thunderbird and adhered to the main thread of his story.
It is also clear that there was sufficient evidence to satisfy the so-called “two witness” rule that a defendant’s perjury cannot be proved by the uncorroborated testimony of one witness. This requirement may be satisfied by the testimony o'f a second witness or by other independent evidence, circumstantial or direct. United States v. Marchisio, 344 F.2d 653, 665 (2 Cir. 1965); United States v. Collins, 272 F.2d 650, 652 (2 Cir. 1959), cert. denied, 362 U.S. 911, 80 S.Ct. 681, 4 L.Ed.2d 619 (1960). Peden’s story about the excursion of the unidentified man in the Thunderbird to Manfredonia’s residence and his return with the money for Peden was fully corroborated by Trerotola’s testimony. There was also other supporting evidence such as Ellrodt’s testimony that Man-fredonia agreed to think about making arrangements to take Peden’s bets and Manfredonia’s subsequent call to Ellrodt to bring Peden to a specific place in Mount Vernon at a particular time.
Manfredonia also contends that this court’s reversal of his wagering tax conviction rendered that charge “untenable” and, therefore, operated nunc pro tunc to make immaterial the testimony upon which the present perjury indictment was based. In advancing this argument appellant completely ignores the purpose of the perjury statute which is to keep the process of justice free from the contamination of false testimony. It is for the wrong done to the courts and the administration of justice that punishment is given, not for the effect that any particular testimony might have on the outcome of any given trial. For this reason it matters not what the ultimate disposition of the case may be; false swearing is still prohibited.
Indeed, it has long been established that an acquittal of the defendant in a trial where false testimony was given does not bar a prosecution for perjury. Adams v. United States, 287 F.2d 701, 705 (5 Cir. 1961); Kuskulis v. United States, 37 F.2d 241 (10 Cir. 1929). It has likewise been held that the reversal of a conviction because of an improper indictment will not prevent a prosecution for perjury committed at the former trial. United States v. Williams, 341 U.S. 58, 71 S.Ct. 595, 95 L.Ed. 747 (1951). See also, United States v. Remington, 208 F.2d 567 (2 Cir. 1953), cert. denied, 347 U.S. 913, 74 S.Ct. 476,
4
It has long been the rule in this Circuit that grand jury testimony may be used to impeach a witness. United States v. Borelli, 336 F.2d 376, 391 (2 Cir. 1964), cert. denied sub nom.
Cinquegrano v. United States, 379 U.S. 960, 85 S.Ct. 647, 13 L.Ed.2d 555 (1965); United States v. Zborowski, 271 F.2d 661, 665 (2 Cir. 1959); United States v. Spangelet, 258 F.2d 338, 341-342 (2 Cir. 1958).