The paper written by Drs. Motosaka and Nagano deals with the seismic ground motion amplification due to the edge structure in Kobe, actually at Nada ward, with the special reference to the heavily damaged zone in Kobe. The main conclusion of the paper is essentially the same as of the discussor that has already been published and so he need not to object to it. However, this paper contains several statements that would lead to serious misunderstanding by general readers. The primary purpose of this discussion is to prevent readers from such misunderstanding.
