This Day in History March 6, 1869

To all my scientist enthusiasts out there, on this date in 1869, Dmitri Mendeleev formally presented his periodic table of elements to Russian Chemistry society.  He showed its organization, and he even predicted elements that were missing and would be discovered.

For more info:
http://www.chemistry.co.nz/mendeleev.htm
http://en.wikipedia.org/wiki/Dimitri_Ivanovich_Mendeleev
http://famousdaily.com/history/periodic-table-first-presented.html