  Equal time spin--spin and pair field correlation functions are calculated for
a two-chain Hubbard model using a density-matrix numerical renormalization
group approach. At half-filling, the antiferromagnetic and pair field
correlations both decay exponentially with the pair field having a much shorter
correlation length. This is consistent with a gapped spin-liquid ground state.
Below half--filling, the antiferromagnetic correlations become incommensurate
and the spin gap persists. The pair field correlations appear to follow a power
law decay which is similar to their non-interacting U=0 behavior.
