Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Seth Rossman 
<seth@...> wrote:
>
> *Because they used acid when making papers back then.*
> 
> 

>  >> No matter how well those old documents are
>  >> conserved, usually behind thick glass and
>  >> illuminated by controlled artificial light, they show signs of
>  >> deterioration, at the very least with yellowing of the paper and
>  >> deterioration of the structure of the medium.
>

This comment was from Mantinieri, I believe.  Unfortunately, I have 
not yet had the opportunity to tour the old Italian churches.

However, many of the really old papers are better than those made 
more recently.  They didn't start to grind up trees for paper until 
the last century.  As I understand it, that is when the average paper 
quality went south. 

Paul
www.PaulRoark.com