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The "Periodic Round Table" looks like a multi-layered cake. There are eight wooden layers that sit on top of one another and can be rotated. Layers are divided into chemical elements with engraved element name and…
Digitized in entirety, this first English edition of the German Das Mineralreich in Bildern (Stuttgart, 1858) contains 24 lithographed plates with one chromolithograph and 22 hand-colored illustrations of 288 minerals,…
This plate exhibits various symbols devised to represent simple and compound elements; they are nearly the same as in plate 4, only extended and corrected.
This plate contains the arbitrary marks or signs chosen to represent several chemical elements, from simple elements such as hydrogen, carbon, and oxygen, to septenary elements such as an atom of sugar.