  We describe a simple nearest-neighbor Ising model that is capable of
supporting a gas, liquid, crystal, in characteristic relationship to each
other. As the parameters of the model are varied one obtains characteristic
patterns of phase behavior reminiscent of continuum systems where the range of
the interaction is varied. The model also possesses dynamical arrest, and
although we have not studied it in detail, these 'transitions' appear to have a
reasonable relationship to the phases and their transitions.

Statistical Mechanics