  The chiral expansion of the one-loop corrections to baryon masses is examined
in a generic meson-cloud model with meson-baryon form factors. For pion loops,
the expansion is rapidly convergent and at fourth order in $m_\pi$ accurately
reproduces the full integral. In contrast, the expansion is found to converge
very slowly for kaon loops, raising questions about the usefulness of chiral
expansions for kaon-baryon physics. Despite the importance of high-order terms,
relations like that of Gell-Mann and Okubo are well satisfied by the baryon
masses calculated with the full integral. The pion cloud cloud makes a
significant contribution to the $\pi N$ sigma commutator, while kaon cloud
gives a very small strangeness content in the nucleon.
