Your 'white residue' could well be derived from urine if you think you have
evidence of tanning related activity. Just a thought, as I can't think what
other chemical residues associated with such a process would produce a white
residue, other than lime.
Stuart D. Elder, MIAI
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Ph. +353 (0) 86 222 4365
----- Original Message -----
From: "Liz Davis" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, May 16, 2003 11:25 AM
Subject: Medieval tanning, fulling or dyeing
I'm currently writing up a small medieval farmstead, and have a feature
which I haven't really been able to "pin down". About 3m west of the house
was an oval pit, 1.5m by 1m and about 0.3m deep, its base was lined with
large cobblestones. It lay about 10m northeast of a source of fresh water.
Some of the pottery from the pit has a white residue on the inside, which
isn't limescale (we have tested for that, but not for anything else yet).
The pit also had several postholes alongside it, probably an associated
I'm wondering whether we've got some tanning, or more likely fulling or
dyeing, going on here, and wondered whether anyone has any thoughts,
suggestions, or generally helpful comments!
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