  We present preliminary results for the mass spectrum of the nucleon and its
low-lying excited states from quenched lattice QCD using the domain wall
fermion method which preserves the chiral symmetry at finite lattice cutoff.
Definite mass splitting is observed between the nucleon and its parity partner.
This splitting grows with decreasing valence quark mass. We also present
preliminary data regarding the first positive-parity excited state.
