  We begin with a short exposition of the theory of lattice varieties. This
includes a description of their orbit structure and smooth locus. We construct
a flat cover of the lattice variety and show that it is a complete
intersection. We show that the lattice variety is locally a complete
intersection and nonsingular in codimension one and hence normal. We then prove
a comparison theorem showing that this theory becomes parallel to the function
field case if linear algebra is replaced by $p$-linear algebra. We then compute
the Lie algebra of the special linear group over the truncated Witt vectors. We
conclude by applying these results to show how to describe the canonical bundle
on the lattice variety and we use the description to show that lattice
varieties are not isomorphic to the analogous objects in the affine
Grassmannian.
