EHRENBERG

(4’-rén-berh), Christian Gottfried, a German scientist, born in 1795, died in 1876. After studying theology, medicine, and natural history, he joined in 1820 an expedition to Palestine, Egypt, and Aby in i a, returning to Berlin in 1825, In 1829 he accompanied Humboldt to the Ural and Altai ranges and to Central Siberia. His great work on infusoria appeared in 1838, and was at once recognized as the highest authority on the subject. It was followed in 1854 by his Micro geology. EHRENBREITSTEIN | (a’renbrit-stin), a dismantled Pru ian fortre formerly of great strength and situated opposite the confluence of the Moselle with the Rhine, on a precipitous rock 387 feet above the river, and inacce ible on three sides. It is connected with Coblentz on the opposite shore by a bridge of boats. The fortifications could accommodate a garrison of 14,000 men, and po e ed room for stores to last an army of 60,000 for a year.