771A. RUDOLF VIRCHOW (1821 - 1902) German pathologist and anthropologist, the founder of cellular pathology and a researcher of blood, tuberculosis, rickets, tumors, and so on. Rare D.S. 1p. folio, Berlin, Nov. 2, 1892, a diploma issued by Frederick William's University to one "Harlow Gale, American, student of philosophy", the entire document filled-out and signed by Virchow. Fine condition, with translation. $300-400