First Periodic Table
It was a 19th century geologist who first recognized periodicity
in the physical properties of the elements. Alexandre
Beguyer de Chancourtois (1820-1886), professor of geology at the School of
Mines in Paris, published in 1862 a list of all the known elements. The list was
constructed as a helical graph wrapped around a cylinder--elements with similar
properties occupied positions on the same vertical line of cylinder (the list
also included some ions and compounds). Using geological terms and
published without the diagram, de Chancourtois ideas were completely ignored
until the work of Mendeleev.