Re: Irrisation? Re: re info on old bottle for M.Cotton

I think he means irridation, Harry.

"Pristis" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> Hello, MaNu. . .
>
> I am not familiar with the term "irrisation" nor is it in my (American)
> dictionary.  Can you tell us more about this word and how it's used in
your
> part of the world.
>
> -------Harry Pristis
>
> <><><><><><><><
> >"MaNu" <[EMAIL PROTECTED]> wrote in message
> >news:[EMAIL PROTECTED]
> >> Hello Michael,
> >> in my opinion the thick encrusted layer should not be removed. This is
> >just
> >> the deformation of the glass, so called irrisation, this occurs on
bottles
> >> that have been burried in the ground or have been exposed to sea water.
> >The
> >> glass is affected because of a chemical reaction between the salty sea
> >water
> >> and the minerals in the glass. The irrisation gives the bottle
something
> >> extra and also has a historic value. It is quite common that this
> >irrisation
> >> will (can) flake off. You will have to handle the bottle with extreme
care
> >> and do not expose it to severe temperature changes.
> >>
> >> All the best,
> >> MaNu
> >>
> >>
> >
> >Thank you for your reply. I also posted the same query on the
> >antique-bottles.net forum and someone there advised me to consult an
> >archaeological society for advice. I have since emailed such a society in
> >Portsmouth and I am waiting for a reply.
> >
> >Thank you once again.
> >
> >-- 
> >Michael Cotton
>