German physician and writer; born at Berlin March 30, 1864. His father, Julius Oppenheimer, is rabbi of the Berlin Reform Congregation. He studied medicine at the universities of Freiburg and Berlin (1881-86), and was graduated M.D. in 1885. In 1887 he establisheda practise in Berlin, becoming a specialist in diseases of the throat and nose; but he soon gave up the medical profession to devote himself entirely to literature, principally to political economy and sociology. He has published the following: "Weg zur Liebe," 1887; "Föhn," a drama, 1893; "Die Ferienwanderung," Berlin, 1894; "Freiland in Deutschland," 1895; "Die Siedlungsgenossenschaft: Versuch einer Ueberwindung des Kommunismus Durch Lösung des Genossenschafts problems und der Agrarfrage," 1896; "Grossgrundeigenthum und Soziale Frage," 1898; "Detlev von Liliencron," 1898; "Das Bevölkerungsgesetz des T. R. Malthus und der Neueren Nationalökonomie," 1901.