NAZIS LAUNCH BOYCOTT WITH HITLERBACKING Move Started Ahead Of Schedule In Many Towns. WARNING IS ISSUED Einstein Acts to Renounce Prussian Citizenship As Protest. BERLIN", March 29. (ID As direct action repressive measures by Chancellor Adolf Hitler's Nazis got under way against Jews in many parts of Germany today as a prelude to the nation-wide anti-Jewish boycott which begins Saturday, it was learned that Prof. Albert Einstein has taken steps to renounce his Prussian citizenship. Prof. Kinstein, a Jew, became a citizen in 1914 when he accepted a position with the Prussian Academy of Sciences. Upon landing at Brussels after his recent trip to the United States, he wrote to the German consulate there for information about the steps necessary to end his citizenship. He pointed out that he formerly was Swiss. The anti-Jewish boycott, the deadline for which was set by Nazi party authorities at 10 a. m. Saturday, already has begun in many sections of the Reich. There were numerous reports of the picketing of Jewish stores and ether repressive, measures, but Berlin heard of no serious cashes. Urge lioycott Stopped. Leading representatives of German Jewry appealed to President von Hindenberg, Hitler, cabinet members and the Berlin police president tonight against the Nazi-inspired boycott. The appeal expressed confidence that the president "and 'the government will not "let our rights and means of existence be taken from us." Declaring German Jews had successfully put forth their utmost efforts to counteract reports abroad of Jewish persecutions and foreign boycott campaigns, and pledging that they would continue to do so, the document asserted "despite this, German Jews, as allegedly the guilty party, are now to be ruined." The appeal was signed by members of the General Council of German Jews and the board of Berlin's Jewish community. Hitler (iives Approval. Chancellor Hitler was quoted by the "Deutsche Allgemeine Ztitung" as having declared at today's cabinet meeting that it was necessary to take measures against the "atrocity campaign" as otherwise popular indignation might takes undersirable forms. The newspaper quoted the chancellor as saying that the situation now is under control and that violence by individuals must be pre- (Continued on Page Two, Col. 7 J