REMSEN; Ira, American chemist and edu cator: b. New' York, 10 Feb. 1846. He studied at the College of the City of New York, was graduated in 1867 from the medical department of Columbia, pursued' chemical courses at Munich and Gottingen, arid in 1870-72 was as-. sistant to Prof. Rudolph Fittig in the' chemical laboratory of the University of Tubingen. In he was professor of chemistry and Phys ics in Williams- College, and in 1876, upon the organization of the:joints: Hal:kits Utuversity, was made ,professor of chemistry in the new institution. He formed its chemical department and continued to direct the numerous researches of the 'Johns Hopkins laboratory, the facilities of which are not excelled in the United States. Despite the large amount • of executive work devolving upon him in 'connection with his chair, he found• opportunity for considerable original investigation, including that in commo tion with the oxidation Of aromatic substitution products, the sulphides, double halides anti ' the detompOsition of diazo compounds by alcohol. In 1::1 he made a study for the city council of a condition of Boston water, which he found due to a- growth of fresh-water sponge in one of the artificial lakes from which the supply was He also conducted for the National Board of Health special researches in various subjects, among them 'Organic Mat ter in the Air' and 'The Contamination of Air in' Heated. by Hot-Air Furnaces or by
Cast-Iron 'Stoves.> 'He was Made, vice-presi dent of the university and frequently, in the absence 'Of the president, Dr.. Daniel Colt Gil man (q.v.), acted as prtsideat.. June! 1.901 he was chosen president, upon the resignation of 'Dr. Gilman and served. as' such till 1912, becoming president ihnd professor emecitus•in 1913. In 1873 he was elected to the American Association, in 1875 made Fellow, and in 1879 president section,. and in .1902 president of the association. . He became a namniter of the Natioaair **paw f Sciences in 1882, ,and .wat at one tune,prestdeot of the American Chenuca Society. , He founded in 1879 and has siege, ical Journal. Among his: ,textbooks are 'The Principles 9f Theoretical Chemistry> (1877); 'Introduction to the Study of the Compounds of Carbon, or Organac • Chemistry> (1885); 'Introduction to the Study of Chemistry' (1887); 'The Elements of Chanistry) (1: 'A Laboratory MAnual> (1889); and 'Cheinical txperiments). (1895),