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A German classical philologist; born in Leipsic, May 22, 1812; died at Ragaz, Switzerland, July 20, 1881. He became an indisputable authority on Hellenic poetry, producing two works of surpassing importance in that department of scholarship: "Greek Lyric Poets" (4th ed. 1878-82), and "History of Greek Literature" (1872); the latter not quite completed at his death, but brought to perfection with the aid of his posthumous papers. He contributed much of value, likewise, to our knowledge of special departments of classical learning.