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
Pier table
The pier table takes its English name from the "pier wall", the space between windows. The table was developed in continental Europe in the 1500s and 1600s, and became popular in England in the last quarter of the 1600s. The pier table became known in North America in the mid-1700s, and was a popular item into the mid to late 1800s. It was common for the space between the rear legs of the pier table to contain a mirror, or "pier glass", to help hide the wall. Later pier tables were designed to stand in any niche in a room, and the pier glass moved above the table.