Digital BW, The Print

Acid doesn't seem to have been used for paper making until some time
in the 19th century...Googling appears to support that. If you can
cite a link to the contrary, please do. Older paper has deteriorated
for a host of other reasons.  

Use of wood pulp was relatively recent.. it required acid from 19th
sometime until the late 20th..it's been eliminated in some "green"
papers to reduce environmental damage. 


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