Study the immigrant to the United States and his descendant, American born and bred. Compare Irishman and Irish-American, Russian Jew and his American-born descendant; compare Englishman and the Anglo-Saxon New England descendant. Here is a race, the Jew, which in the Ghetto and under circumstances that built up a tremendously powerful set of traditions and customs developed a very distinctive type of human being. Poor in physique, with little physical pugnacity, but worshiping, learning and reaching out for wealth and power in an unusually successful manner, the crucible of an adverse and hostile environment rendered him totally different in manners from his Gentile neighbors. With a high birth rate and an intensely close and pure family life, the Ghetto Jew lived and died shut off by the restrictions placed upon him and his own social heredity from the life of the country of his birth. Then came immigration to the United States through one cause or another,--and note the results. With the old social heredity still at work, another set of customs, traditions and beliefs comes into open competition with it in the bosom of the American Jew. Nowhere is the struggle between the old and the new generations so intense as in the home of the Orthodox Jew. His descendant is clean-shaven and no longer observes (or observes only perfunctorily or with many a gross inconsistency) the dietary and household laws. He is a free spender and luxurious in his habits as compared with his economical, ascetic forefathers. He marries late and the birth rate drops with most astonishing rapidity, so that in one generation the children of parents who had eight or ten children have families of one or two or three children. He becomes a follower of sports, and with his love for scholarship still strong, as witness his production of scholars and scientists, the remarkable rise of the Jewish prize fighter stands out as a divergence from tradition that mocks at theories of inborn racial characters. And a third generation differs in customs, manners, ideals, purposes and physique but little from the social class of Americans in which the individual members move. The names become Anglicized; gone are the Abrahams and Isaacs and Jacobs, the Rachels and Leahs and Rebeccas, and in their place are Vernon, Mortimer, Winthrop, Alice, Helen and Elizabeth. And this change in name symbolizes the revolution in essential characters.