Where did early photo chemicals come from?

Subject: Where did early photo chemicals come from?

Date: Fri May 26 18:09:27 2000
Posted by Hal Bellerud
Grade level: nonaligned School: University of Puget Sound
City: Tacoma State/Province: WA Country: USA
Area of science: Science History
ID: 959378967.Sh

Message:


Early photographic experimentors had access to some fairly refined 
chemicals and photo chemicals.  What were these (silver nitrate comes to 
mind), how were they refined and for what other purposes were they refined 
and manufactured for?  Did the experimentors have to make their chemicals 
from scratch?

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