 1852 - Eugène A. Demarçay born: discovered europium (Eu, element 63); spectroscopic evidence of the discovery of radium (Ra, 88). |
| 1891 - Merck & Co. founded. |
| 1907 - Aluminum Company of America (ALCOA, originally Pittsburgh Reduction Company) renamed. |
| 1932 - Harold Urey and co-workers announced discovery of deuterium, an isotope of hydrogen (H, element 1). |
sources: http://webserver.lemoyne.edu/faculty/giunta/week.html, http://todayinsci.com
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