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 | Val Camonica #5 A Bronze Age (roughly 800 B.C.E.) symbol carved on the face of Val Camonica in the southern area of the Alps (Italy). No contextual information is known at this time. |
 | Soap (alternate) An 18th century chemical symbol for soap. |
 | Pedra do Ingá #1 A symbol carved on the famous Ingá Stone in northeastern Brazil. |
 | Pedra do Ingá #2 A symbol carved on the famous Ingá Stone in northeastern Brazil. |
 | Painted Cave A symbol from the Painted Cave area near Santa Barbara, California, likely created by the Native American Chumash people. No contextual information known at this time. |
 | Glue (alchemy) A symbol used in alchemy to indicate glue. |
 | Zinc (alternate #2) An alchemical symbol for the metal zinc. |
 | Zinc oxide (alchemy) A symbol used to indicate zinc oxide in chemical practices of the 18th and 19th centuries. |
 | Lascaux #1 France's Lascaux Caves are a rich repository of early artistic images. This symbol was found amidst depictions of animals, but no contextual information is known at this time. |
 | Lascaux #2 France's Lascaux Caves are a rich repository of early artistic images. This symbol was found amidst depictions of animals, but no contextual information is known at this time. |
 | Pulverize (alchemy) An 18th century chemical symbol used to indicate the process of pulverizing ("pulverisare") and the result of that process, powder ("pulvis") |
 | Mercurius sulphuratus This substance, represented here by an 18th century chemical symbol, is a compound of mercury, sulphur and cinnabar. |
 | Fuse (alchemy) An 18th century chemical symbol indicating the process of fusing, or melting things together. |
 | Haute-Garonne #2 A symbol discovered on the wall of the Marsoulas cave in Haute-Garonne, southwestern France. Although the image of a bison was portrayed below it, no contextual information is known at this time. |
 | Catal Hüyük This symbol was discovered at the site of Catal Hüyük, a Neolithic settlement in southern Turkey. |
 | Nitrogenous air (alchemy) An 18th century chemical symbol used to indicate nitrogen dioxide and other similar gasses. |
 | Quicklime (alchemy) An early chemical symbol used to indicate quicklime, also known as calcium oxide. |
 | White Precipitate (Alternate #2) Resembling a combination of the signs for Precipitation and Mercury, this alchemical symbol represents either of two insoluable compounds, Mercuric Amide Chloride (HgNH2Cl2) "Infusible white precipit… |
 | White Precipitate (alternate #1) Resembling a combination of the signs for Precipitation and Mercury, this alchemical symbol represents either of two insoluable compounds, Mercuric Amide Chloride (HgNH2Cl2) "Infusible white precipit… |
 | White Precipitate Resembling a combination of the signs for Precipitation and Mercury, this alchemical symbol represents either of two insoluable compounds, Mercuric Amide Chloride (HgNH2Cl2) "Infusible white precipit… |
 | Sal alcalinus (alternate #3) A symbol used in alchemy to indicate alkaline salt, which is composed of sodium and potassium. |
 | Pyrophorus (alchemy) An 18th century chemical symbol indicating pyrophorus. |
 | Lye\alkali (alchemy) An alchemical symbol used to indicate lye. |
 | Mercury (alternate #5) An alchemical symbol used to indicate mercury and mercury-based compounds. |
 | White Precipitate (alternate #3) An early chemical symbol for the white powder created by putting corrosive sublimate in a solution of ammonia or sal ammoniac. |
