Sylvia Rose
Food Pathogens: Family Health & Safety
Pathogens of food include Bacillus cereus , Salmonella typhimurium , Aeromonas hydrophila , and Pseudomonas fragi . Each of these...
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Sylvia Rose
Oct 226 min read
White Lead Toxic Beauty, Art, Ancient Production
White lead, lead(II) carbonate or PbCO₃, has a long history in art, paint and industry. It's a primary source of white for artists and in...
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Sylvia Rose
Sep 193 min read
Lunar Caustic AgNO3: Lapis Infernalis of Alchemy
Lunar caustic ( lapis infernalis ), Höllenstein (hellstone) or silver nitrate ( argentinium nitrium ) is esteemed by alchemists of the...
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Sylvia Rose
Sep 86 min read
Almadén Mines: Ancient Mercury Extraction
The Almadén Mines in central Spain have an infamous past driven by profit and greed. The deadly history of ancient Almadén revolves...
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Sylvia Rose
Aug 313 min read
Making Sulfuric Acid in History & Today
Sulfuric acid (H₂SO₄) is one of the most important chemicals in the world, with many uses from car battery production to fertilizer...
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Sylvia Rose
Oct 26, 20233 min read
Phosphorus: Element of Fatal Fascination
Phosphorus is the first element not known since ancient times. This glowing substance is discovered by German alchemist Hennig Brand in...
31 views
Sylvia Rose
Oct 1, 20236 min read
Pretty Poisons: Holly, Yew, Mistletoe
Holly, yew and mistletoe, the most cheerful and celebrated of seasonal plants, are also the most poisonous. These three toxic beauties...
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