Re: archivalness of gum
P.S. I wanted to also add, Judy, that my stain test chapter is now organized into sections--stain tests WITH exposure and stain tests WITHOUT exposure (can I possibly be any more obsessive compulsive???!!). In chronological order, heheheheheh. 2 11pt. single spaced pages of different stain tests WITHOUT exposure, and one bitty paragraph devoted to you and a guy named Richards from 1905.
Richards back in the dawn of time stated that he does not find it enough to just coat the paper and dry and wash to do this test, but to give a bit of exposure, because he finds that the pigment will not leave the paper sometimes unless it has had a little light action. "This will be noticed now and then in a print which will develop into a picture with the high lights pure and white, whilst the edges of the print which have been protected from light by the rebate of the frame still retain a considerable amount of pigment."
He developed the bend test: "coat a strip of the paper with the sensitized pigment solution. After dry, bend it in a zigzag. Expose to light a minute or so and put in water. See that in the bends where no exposure occurred if after 10 mn the pigment has left the paper-if so, it is suitable."
So he is still reading from the no exposure parts which is also funny!
So you back to your community service and me to my writing...however the list diversion has been so delectable...
And, Judy, as an aside, I have a nice little chapter on the dreaded stain test, tracing its origins, who brought it from Germany to England and then to America. Word for word..culprit for culprit. I'm dedicating that chapter to you :) There was the distinct feel that the Germans were more scientific about gum and hence "modern" or "better". But we postmodernists know better than to be scientific about gum, heheheheheh.It's interesting that AFAIK Anderson did NOT share the credit (or the blame)... tho I'm not sure I've read every last thing he wrote, so it could be somewhere...