11 Interlaken Rd, Lakeville, CT 06039, USA
Clark received his elementary education at the Trinity School and at several other schools during successive moves after the family left Tivoli, but finally obtained a scholarship at The Hotchkiss School in Lakeville, Connecticut.
880 Main St, Williamstown, MA 01267, USA
From 1903 to 1908 Clark studied at Williams College, receiving his Master of Arts degree.
Baltimore, MD 21218, USA
On the recommendation of Professor Mears, Clark applied for admission to The Johns Hopkins University and was accepted as a graduate student by Professor Harmon Morse.
(An Elementary Treatise on the Hydrogen Electrode, Indicat...)
An Elementary Treatise on the Hydrogen Electrode, Indicator and Supplementary Methods, With an Indexed Bibliography on Applications
Clark received his elementary education at the Trinity School and at several other schools during successive moves after the family left Tivoli but finally obtained a scholarship at The Hotchkiss School in Lakeville, Connecticut. Here he excelled in English and in mathematics, was a member of the debating team, and was captain of the intramural gymnasium team in his final year. He was also class poet when he graduated in 1903.
Then followed four years at Williams College where he became interested in chemistry, initially through reading Remsen's textbook in preference to a more elementary text advocated by his teacher, Professor Leverett Mears. Although this departure from conventional behavior earned him the nickname "Remmie" among his fellow students, his initiative brought him special attention and led in turn to his taking advanced courses in chemistry. During his senior year, he taught chemistry in the Williamstown High School and, after graduation, was invited to remain another year as an assistant and candidate for the Master of Arts degree, which he received in 1908. On the recommendation of Professor Mears, he then applied for admission to The Johns Hopkins University and was accepted as a graduate student by Professor Harmon Morse.
After receiving the Doctor of Philosophy, Clark became a chemist in the Daily Divison of the U.S. Department of Agriculture. His work on the bacteriology of milk products led him to study problems involving acidity, and he became adept in the use of the hydrogen electrode. Struck by the variability of titration indicators then available, he developed, with Herbert Lubs, a set of thirteen indicators. These studies led him to write The Determination of Hydrogen Ions (1920), which became a classic in its fields.
In 1920 Clark became chief of the Division of Chemistry of the Hygiene Laboratory, Public Health Service, the forerunner of the National Institutes of Health. Here he began studies on oxidation-reduction potentials of dyes, a field that, together with studies of metalloporphyrins, occupied him for the rest of his life. In 1927 he became a professor of physiological chemistry in the Johns Hopkins Medical School.
Clark was an excellent teacher, stressing especially the importance of physical chemistry for medical students. He was active in many government bureaus, particularly during World War II. After his retirement in 1952, he devoted himself to writing, especially to his monograph on the oxidation-reduction system (1960).
(An Elementary Treatise on the Hydrogen Electrode, Indicat...)1920
Clark became a distinguished teacher. He invariably insisted upon a clear knowledge of fundamental principles.
Clark was survived by two daughters, Harriet Allen (Mrs. Everett B. Gladding) and Miriam Clark, from his marriage, on 14 September 1910, to Rose Willard Goddard.