Abstract :
It is shown that the solution given in a previous paper for the reflection at a ferrite boundary in a rectangular waveguide is invalid in a certain region because it implies a finite power flux into the waveguide walls. This flux can be taken care of by means of Bresler´s surface waves, which can propagate in the anomalous region, and which were postulated in order to resolve a thermodynamic paradox. Their reality when the ferrite is lossy, however, requires further elucidation.
