Re: Sodium Bisulfite

From: Judy Seigel ^lt;jseigel@panix.com>
Date: 08/25/04-10:13:57 PM Z
Message-id: <Pine.NEB.4.60.0408260004430.28905@panix1.panix.com>

On Wed, 25 Aug 2004, Christina Z. Anderson wrote:

> But one of the fascinating things I found in research was they thought
> multiple coats weren't possible--that the next gum coat would soften the one
> below. Now we're the smarter.

Chris, you say "they thought" -- I daresay some folks may have thought
that, but I don't recall reading it... or at most once. And there have
been many writers who suggested multi-coats, from Heinrich Kuehn & that
other Austrian whose name I don't think of this minute, unless it's
Wurzel, which I don't think it is, to even our hero Paul Anderson, who
suggested 3 coats as standard, probably as early as his first book
(1917?).

I'll add BTW that even among us smart people nowadays it has been found
that a subsequent coat *can* soften a layer underneath, as was discussed
on this list circa 1998... and as I myself have encountered. My theory is
that it might have been more frequent early on when dichromate saturation
was generally less... tho who knows, it could have been anything.

Judy
Received on Wed Aug 25 22:14:09 2004

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