  A lattice of uniformly charged, infinitesimally thin, rods decorated with an
ordered array of counterions exhibits anomalous behavior as the spacing between
the rods is varied. In particular, the counterion lattice undergoes a sequence
of structural shearing, or "tilting," phase transformations as the spacing
between the rods decreases. The potential implications of this behavior with
respect to the packaging of biologically relevant polyelectrolytic molecules
are commented upon.
