An Editor who asks for comments deserves what he gets, though he may not always be able to take it. The problem of the “slipped disc”, raised originally by Miss W. M. Griffin (see The Mathematical Gazette, XLIV (1965), p. 389), has aroused a great deal of interest and several notes have been received, including one from Miss Griffin herself. In the present circumstances, however, when a good deal of material is being returned to authors through lack of space, it seems, regrettably, to be necessary to confine publication to one article, given below, which introduces an entirely new point of view. Thanks are due to all those who offered comments on an interesting but awkward problem.