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Subject Tocher, J. F. (James Fowler), 1864- Remove constraint Subject: Tocher, J. F. (James Fowler), 1864-

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    • 1910 (Original design)
    • circa 1957 (Date attributed to slide)

    Graphic representation of the periodic table of chemical elements in the style of a spiral with radii and interrupted short periods. This table was originated by Scottish chemist James Fowler Tocher (1864-1945) in 1910…