  Bystroem-Evers compound Ag5 Pb2O6 has been annealed at 500-540 K under flow
of electric current which results in a textured structure and anisotropic
colossal electric conductivity (> 10^9 ohm-1cm-1) between 210-525 K. The
related physical properties are primarly governed by dissociation of Ag from
c-axis channels and lattice strains which in turn depend upon electric current.
