  We compute the quark-mass dependence of the baryon octet and decuplet masses
within the $\chi$-MS scheme at the one-loop level. The results are confronted
with recent lattice QCD simulations of the MILC collaboration. A fair
reproduction of the quark-mass dependence as suggested by the lattice
simulations is obtained up to pion masses of about 700 MeV. Based on the chiral
one-loop results we predict that the dependence of the baryon octet and
decuplet masses on the quark-masses is discontinuous. Typically the pion-mass
dependence is smooth up to about 300 MeV only. This is a consequence of self
consistency imposed on the partial summation, i.e. the masses used in the loop
functions are identical to those obtained from the baryon self energies. The
'mysterious' quark-mass dependence of the Xi mass predicted by the MILC
collaboration is recovered in terms of a discontinuous chiral extrapolation.
