FRESENIUS, KARL REMIGIUS German chemist., was born at Frankfort-on-Main on Dec. 28, 1818. He studied at Bonn and at Giessen, where he acted as assistant in Liebig's laboratory, and in 1843 became assistant professor. In 1845 he was appointed to the chair of chemistry, physics and technology at the Wiesbaden Agricultural Institution, and in 1848 he became the first director of the chemical laboratory which the Nassau government established there. Fresenius occupied him self almost exclusively with analytical chemistry, and the fullness and accuracy of his text-books on that subject (of which that on qualitative analysis first appeared in 1841 and that on quantitative in 1846) soon rendered them standard works. Many of his original papers were published in the Zeitscjiri f t fir analytische Chemie, which he founded in 1862 and continued to edit till his death. He died suddenly at Wiesbaden on June 11, 1897.