Dmitri Mendeleev
Unaware of the earlier work on periodic tables going on in the 1860s, he made the following table:
By adding additional elements following this pattern, Mendeleev developed his extended version of the periodic table. On 6 March 1869, he made a formal presentation to the Russian Chemical Society, titled "The Dependence between the Properties of the Atomic Weights of the Elements", which described elements according to both atomic weight (now called "relative atomic mass") and valence. This presentation stated that
Tables (board game)
The τάβλη of Zeno's time is believed to be a direct descendant of the earlier ancient Roman "Ludus duodecim scriptorum" ("game of twelve lines" or, better, "game of twelve signs") with that board's middle row of points removed, and only the two outer rows remaining. Ludus duodecim scriptorum used a board with three rows of 12 points each, and the pieces were moved across all three rows according to the roll of three dice. The earliest known mention of the game is in Ovid's "Ars Amatoria" ("The Art of Love") (written between 1 BC and 8 AD).
In the 11th century Shahnameh, the Persian poet Ferdowsi credits Burzoe with the invention of "nard" in the 6th century. He describes an encounter between Burzoe and a Raja visiting from India. The Raja introduces the game of chess, and Burzoe demonstrates nard, played with dice made from ivory and teak.