Buried metal

There are sometimes minute, very fragile meandering tubes on ancient
buried metal objects that I have always thought of as 'worm casts'
(though that might not be the right term). They are, presumably, a
good sign of authenticity (they are small and very fragile and
follow the topography of the object/corrosion). Does anyone know of
any research that has been done on these?

Dr Jack Ogden
Osmiridium Ltd


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                  Conservation DistList Instance 18:7
                  Distributed: Tuesday, July 13, 2004
                        Message Id: cdl-18-7-011
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