  We calculate the finite volume effects for the pion and nucleon mass. For the
pion mass we present the results of a full two-loop calculation in chiral
perturbation theory. The outcome shows that the resummed version of the Luscher
formula we presented in an earlier work does indeed give an excellent
approximation to the two-loop result. In view of this result we apply the same
resummed formula to the nucleon mass. In the nucleon sector the extension of
the chiral expansion to higher quark masses appears to be more problematic and
it is therefore more difficult to make reliable predictions for the size of the
finite volume effects. We present some preliminary numerical estimates.
