Graphic representation of the periodic table of chemical elements in the style of a spiral with different sizes of revolutions. This table was originated by French engineer, inventor, and biologist Charles Janet (1849-1932) in 1928 and classified by chemist Edward G. Mazurs as Subtype IIIB4-1a in his seminal work Types of Graphic Representation of the Periodic System of Chemical Elements (1957). A version of this illustration appears as Figure 87 on page 152 of Mazurs' 1957 publication.
Janet, Charles, and Edward G. Mazurs. “Periodic Table in Style of Spiral with Different Sizes of Revolutions.” Glass, circa 1928–1957. Edward G. Mazurs Collection of Periodic Systems Images, Box 2. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/t722h942r.