  Hubner's formula for the Bures (statistical distance) metric is applied to
both a one-parameter and a two-parameter series (n=2,...,7) of sets of 2^n x
2^n density matrices. In the doubly-parameterized series, the sets are
comprised of the n-fold tensor products --- corresponding to n independent,
identical quantum systems --- of the 2 x 2 density matrices with real entries.
The Gaussian curvatures of the corresponding Bures metrics are found to be
constants (4/n). In the second series of 2^n x 2^n density matrices studied,
the singly-parameterized sets are formed --- following a study of Krattenthaler
and Slater --- by averaging with respect to a certain Gibbs distribution, the
n-fold tensor products of the 2 x 2 density matrices with complex entries. For
n = 100, we are also able to compute the Bures distance between two arbitrary
(not necessarily neighboring) density matrices in this particular series,
making use of the eigenvalue formulas of Krattenthaler and Slater, together
with the knowledge that the 2^n x 2^n density matrices in this series commute.
