  We investigate a new light fermion action (the ``D234'' action), which is
accurate up to $\O(a^3)$ and tadpole-improved $\O(a \alpha_s)$ errors. Using
D234 with Symanzik- and tadpole-improved glue we find evidence that continuum
results for the quenched hadron spectrum (pion, rho and nucleon) can be
obtained on coarse lattices.
