  In a recent Letter, Alberg and Miller presented a calculation of the pion
contributions to the self-energy of the nucleon computed from a pseudoscalar
(PS) pion-nucleon interaction, with the claim that the result would be
equivalent to that with the pseudovector (PV) form. We demonstrate that the PV
and PS pion-nucleon couplings do in fact lead to different results for the
self-energy. In particular, for the model-independent, leading nonanalytic
behavior of the self-energy, the PV theory yields the well-known m_\pi^3
dependence in the chiral limit, while the PS interaction involves an
additional, lower-order term ~ m_\pi^2 log(m_\pi^2).
