[SEL] Patina on Brass

[Rob Skinner]

> BTW, if you really want to do yourself in with poison gas,
acidifying 
> that Liver of Sulphur to release H2S is a quick way to do
it. That 
> stuff really is silent but deadly.

Hi John, 
I KNEW I could count on you as a source of fun and
educational experiments.  

Rob