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Re: Yet another explanation for dain daiin...

On 22 Jan 2002 at 3:41, Jorge Stolfi wrote:

> "Vitriolo Romano" (Roman vitriol) seems to be copper sulfate. From
> what I remember of freshman chemistry, the "prima acqua" may be just
> water of crystallization; but I would not be surprised if it contained
> some nitric acid...

That will get rid of all spots and most of the face too :-)