The Periodic Table we've all seen in chemistry books and classes is not always the way it was, nor the way it must always be. In this episode we explore all kinds of periodic representations of the properties of elements, from Mendeleev's first published table in 1869, through wide and narrow tables, and spirals. There are even three-dimensional "tables," from helices to submarines, corners of walls, globes, pyramids, and tiles. My Patreon subscribers can download a supplemental sheet with a few samples of periodic tables which I discuss.Support the show Support my podcast at https://www.patreon.com/thehistoryofchemistry Tell me how your life relates to chemistry! E-mail me at steve@historyofchem.com Get my book, O Mg! How Chemistry Came to Be, from World Scientific Publishing, https://www.worldscientific.com/worldscibooks/10.1142/12670#t=aboutBook