  In this note a bijection is constructed between the set of partitions of n
simultaneously s-regular and t-distinct, and those simultaneously t-regular and
s-distinct. Some implications of the map are discussed. As a generalized
version of Glaisher's bijection, the map may be widely useful in other
partition combinatorics. A previous conjecture concerning iterations of
Glaisher's bijection is given a counterexample.
