 1861 - Nikolai D. Zelinsky born: catalysis of hydrocarbon disproportionations; bromination of fatty acids (Heil-Volhard-Zelinsky reaction). |
| 1886 - Clemens Winkler, in the course of analyzing a mineral, discovered element (germanium, Ge, element 32) consistent with predictions by J. A. R. Newlands and Dmitrii Mendeleev. |
| 1892 - William P. Murphy born: diabetes; pernicious anemia and other blood diseases; Nobel Prize (Medicine), 1934. |
sources: http://webserver.lemoyne.edu/faculty/giunta/week.html, http://todayinsci.com
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