Mr. Justice Jackson
delivered the opinion of the Court.
Petitioners were indicted in Bronx County, New York, on February 11, 1947, for the crime of murder in the first degree. The District Attorney moved the court for an order that the trial be by a special jury, pursuant to New York law, which motion was granted over opposition on behalf of defendants by assigned counsel. One hundred and fifty names were drawn from the special jury panel, under supervision of a Justice of the State Supreme Court, in the presence of defendants’ counsel and without objection.
When the case was called for trial defendants, as permitted by the state practice, served a written challenge to the panel of jurors upon the following grounds:
1. That § 749-aa of the Judiciary Law of the State of New York is in violation of § 1 of the Fourteenth Amendment to the Constitution of the United States.
2. That qualified Negro jurors were improperly excluded from the list of special jurors, from which said jury panel was drawn.
3. That qualified women jurors were improperly excluded from the list of special jurors, from which said jury panel was drawn.
After full hearing, the challenge was disallowed and petitioners were tried and convicted. On appeal to the Court of Appeals, the third ground of challenge to the jury panel was abandoned and the convictions were affirmed. 297 N. Y. 734, 77 N. E. 2d 25. We granted certiorari on a petition raising the remaining grounds. 332 U.S. 843.
The constitutionality of the New York special jury statutes has but recently been sustained by this Court, Fay v. New York, 332 U. S. 261, against a better supported challenge than is here presented, and the issue warrants little discussion at this time.
Some effort is made by statistics to differentiate this case from the precedent one as to the ratio of convictions before special juries contrasted with that before ordinary juries. The defendants present to us a study from July 1, 1937, to June 30, 1946, which indicates that special juries in Bronx County returned 15 convictions and 4 acquittals during the period and concludes that the special jury convicted in 79% of the cases while the general juries convicted in 57%. The District Attorney responds that in 5 of these 19 cases, the special jury returned conviction in a lesser degree than that charged and, hence in 9 out of 19 cases withheld all or part of what the State asked. Moreover, it is said that all but two were capital cases, another was for manslaughter and one for criminally receiving stolen property. It should be observed that the number of cases involved in these statements is too small to afford a secure basis for generalizing as to the convicting propensities of the two jury panels, even if the cases were comparable. But it appears that in Bronx County a system of special and intensive investigation is applied to capital cases from the moment they are reported, more careful preparation is given them and they are tried by the most experienced prosecutors. This makes this class of cases not fairly comparable with the run-of-the-mill cases, felony and misdemeanor, that are included in the ordinary jury statistics. Moreover, none of these facts were laid before the trial court, which was in the best position to analyze, supplement or interpret them. We think on this part of the challenge no question is presented that was not disposed of in Fay v. New York, supra. Indeed, on opening the hearing on defendants’ challenge the trial court said, “I understand the inquiry now is to be directed to the intentional elimination or disqualification of women and Negroes on the special jury panel.” Counsel for both defendants assented to this definition of the issues and no evidence on other subjects was offered.
Petitioners’ remaining point is that “the trial of the petitioners, Negroes, by a jury selected from a panel from which Negroes were systematically, intentionally and deliberately excluded, denied petitioners the equal protection of law and due process of law guaranteed them by the Constitution of the United States.” If the evidence supported the assumption of fact included in this statement, the point would be of compelling merit. The law on this subject is now so settled that we no longer find it necessary to write out expositions of the Constitution in this regard. See Brunson v. North Carolina, 333 U. S. 851, decided March 15, 1948.
It is admitted that on this panel of one hundred and fifty there were no Negroes. But not only is the record wanting in proof of intentional and systematic exclusion— the only witnesses sworn testified that there was no such practice or intent. Nothing in the background facts discredits this testimony. The census figures give a proportion of Negro-to-white population in that county of .7% in 1920, 1.0% in 1930, and 1.7% in 1940. It is admitted that since the last census the Negro population has considerably increased. According to one estimate, the number of colored inhabitants, which in 1940 was 24,892, has increased to 192,066 in 1948. The same estimator later revised the figures to between 65,000 and 70,000. Neither estimate was before the trial court, and no evidence or finding gives us judicially approved data. Of course, new wartime arrivals take some time to qualify as active members of the community and its machinery of justice cannot be expected instantaneously to reflect their presence. The official who compiled the jury lists testified as to Negro jurors that “from 1946 on I must have examined at least 500 myself.” The number accepted for service could not be ascertained from the records, which make no notation of color, but he testified that there were “maybe two dozen; maybe three dozen.” For the special panel, he testified that he had examined an estimated one hundred Negroes and had accepted “maybe a dozen.” The testimony is undenied.
The record is utterly devoid of proof of systematic, intentional and deliberate exclusion of Negroes from jury duty.
The judgment is
Affirmed.