The New International Encyclopædia/Ideler, Christian Ludwig

IDELER,, (1766-1846). A German astronomer and chronologist, born at Gross-Brese, near Perleberg, in Prussia. After holding various offices he received a professorship at the University of Berlin in 1821, and in 1829 he was made a foreign member of the Institute of France. Ideler's most important works are: Handbuch der mathematischen und technischen Chronologie (2 vols., 1825-26; 2d ed. 1883), which was the first work that presented a clear view of the reckoning of time

among the ancients; and Die Zeitrechnung der Chinesen (1839), a supplement to the Handbuch. He also wrote, in conjunction with Nolte, handbooks of the French and English languages and literatures, which passed through numerous editions.