  We comment on the paper of Gellas et al, nucl-th/0002027, in which heavy
baryon chiral perturbation theory results for the spin polarisabilities of the
nucleon are given. That paper uses a definition which is different from the one
used in papers by us, hep-ph/9908526, hep-ph/9909442 and hep-ph/0002133. In
this comment we show that it is the latter definition, and not that of Gellas
et al, that should be compared with the values of the polarisabilities
extracted from dispersion relation analyses.
