The paper is also a sequel of the same kind annoucement of the author, and it treated the numerical calculation for the buckling load of thin deep beam subjected to any type of load. It expatiates on the elastic link connections so-called "Elastische Gelenkkette" method which is used for the solution of the stability problems by H. Hencky, and a trial for the easy examples of the lateral bucking of beam has been alreadymade by Foppl and E. Endo. And this time the problem it is treated more generally for the beam of various kinds of loading and variable cross sections. Although this method is an approximate one, comparing this approximate calculation with the exact solution, the error is very small. As the numerical example, the critical load of the beam whose cross sections gradually changed in a certain law is determined.