Graphic representation of the periodic table of chemical elements constructed as a symmetrical series table with centered steps. This type of table was originated by Thomas Bayley in 1882 and classified by Mazurs as Type IIIC3-6 in his seminal work Types of Graphic Representation of the Periodic System of Chemical Elements (1957). This illustration, likely adapted by Mazurs himself, appears to be a modified version of Figure 82 on page 147 of Mazurs' 1957 publication.
1886 (Original design), Circa 1957 (Date attributed to slide)
Bayley, Thomas, and Edward G. Mazurs. “Symmetrical Series Table with Centered Steps.” Glass (material), circa 1882–1957. Edward G. Mazurs Collection of Periodic Systems Images, Box 1. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/tt44pn34n.
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