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The INTERNET Database of Periodic Tables

There are thousands of periodic tables in web space, but this is the only comprehensive database of periodic tables & periodic system formulations. If you know of an interesting periodic table that is missing, please contact the database curator: Mark R. Leach Ph.D.

Use the drop menus below to search & select from the more than 1300 Period Tables in the database: 

  Text Search:       

Year:  1915 PT id = 1233

Ramsay's The Elements Arranged in The Periodic System (with movable flap)

From pages 220 & 221 of William Ramsay's book The Gases of The Atmosphere, McMillan (1915) comes a periodic table with a fold (or flap) that can be moved from page 220 to 221:

This periodic table is available as a Project Gutenberg ebook. The HTML version gives this dual representation:

Thanks to John Marks for the tip!

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What is the Periodic Table Showing? Periodicity

© Mark R. Leach Ph.D. 1999 –

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