  Using the Hubbard model on a 1D lattice and the "memory function" approach,we
have calculated the electrical conductivity of a 1D system of correlated
electrons on a lattice. We have determined the temperature and frequency
profiles of the conductivity. Effects of changes of the band filling on the
conductivity were also briefly discussed.The results were compared with
experimental data on the Bechgaard salts, and the agreement is satisfactory.
