Johann Karl Friedrich Rosenkranz, a German philosopher, born in Magdeburg, April 23, 1805. He graduated at Halle in 1828, and was professor there from 1831 to 1833, and subsequently at Königsberg. He has extended the system of Hegel, applying it to all spheres of thought and life. His best known works are: Psychologie (Königsberg, 1837; 3d ed., 1863); Geschichte der Kant'schen Philosophie, forming the 12th and last volume of his and F. W. Schubert's complete edition of Hegel's works (1838-'40); Studien (5 vols., 1839-'47); Die Pädagogik als System, (1848; English translation by Anna C. Brackett, St. Louis, 1873); Die Wissenschaft der logischen Idee (2 vols., 1858-'9); Diderot's Leben und Werke (2 vols., 1866); Hegel's Naturphilosophie (1868); Hegel als Nationalphilosoph (1870; English translation by G. S. Hall, London, 1874); Von Magdeburg und Königsberg (1873); and Neue Studien (1874-'5).

Rosemary (Rosmarinus officinalis).