Effective Field Theory of the Pion-nucleon-interaction *

In the first part of the talk, I discussed the nature of the effective theory that describes the properties of the pion-nucleon-interaction at low energies, using the static model as a starting point. In the second part, I then pointed out that the infrared singularities occurring in the πN scattering amplitude are stronger and of a more complex structure than those encountered in ππ scattering. A formulation of the effective theory that properly accounts for these was described and the results obtained thereby were illustrated with a few examples. In the following, I restrict myself to a discussion of some qualitative aspects of this work.