  The mass spectrum of the lowest lying octet baryons is calculated to
next-to-next-to-leading order in heavy baryon chiral perturbation theory and
partially quenched heavy baryon chiral perturbation theory. We work in the
isospin limit and treat the decuplet baryons as dynamical fields. These results
are necessary for extrapolating QCD and partially quenched QCD lattice
simulations of the octet baryon masses.
