oops. In post #13 I typo'ed (again! sheesh.) Fortunately, it's obvious, but to be accurate, "...KBr serves a different purpose in developers than as an ingredient in emulsion making."
I think I counted a half dozen typos in the internet newspapers just this morning. Do you suppose it's something contagious? are we getting lazy, or is there something to this 'brains being rewired' stuff? Don't mean this to be a topic here, but it does give one pause.