Has anyone else looked at The Scientific American Cyclopedia of Formulas, ed. Albert A. Hopkins? Here's a link to the 1910 edition--
http://books.google.com/books?id=io...&hl=en&sa=X&oi=book_result&resnum=1&ct=result
--which you can download for free. I found it so fascinating that I bought a copy of the 1928 edition from a seller on eBay for about $10.
Aside for formulas for everything from varnishes to bubble gum to soap to ginger ale, it's got about fifty densely printed pages of photographic formulas for processing chemicals, retouching materials, emulsions, POP, collodion, Autochrome, various printing process, lots of neat stuff. I bumped into it accidentally after Merg Ross mentioned over on the LF forum that he liked to process film in a metol-acetone formula, and I came across a number of pyro-acetone formulas here.
http://books.google.com/books?id=io...&hl=en&sa=X&oi=book_result&resnum=1&ct=result
--which you can download for free. I found it so fascinating that I bought a copy of the 1928 edition from a seller on eBay for about $10.
Aside for formulas for everything from varnishes to bubble gum to soap to ginger ale, it's got about fifty densely printed pages of photographic formulas for processing chemicals, retouching materials, emulsions, POP, collodion, Autochrome, various printing process, lots of neat stuff. I bumped into it accidentally after Merg Ross mentioned over on the LF forum that he liked to process film in a metol-acetone formula, and I came across a number of pyro-acetone formulas here.



