vinegar salts
The detectives looked for a clue that would break the case wide open.
There is Clothes Detergent and Dish Detergent!.
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1 Gases in discharge tubes (fluorescent lamps and neon signs) 2 Welding arcs 3 Lightning 4 Auroras 5 The upper atmosphere (the ionosphere) 6 Stars and the Sun 7 the solar wind 8 interstellar gas...