ABSTRACT
A necessary preliminary to analysis is some classification of differences. The classification which naturally suggests itself in the first instance is one based upon the character of the matters in dispute. Such a classification yields two divisions, each in turn containing further subdivision. The divisions comprise respectively differences about “the fraction of wages” and differences about “the demarcation of function.” Differences about the fraction of wages may be subdivided into: those connected with the reward of labour, generally raising an issue as to the money rate of wage, but sometimes touching such matters as workshop fines or the amount of special allowances, whether in money or in kind. But for the task of constructing machinery for preserving industrial peace it is not of serious value, because in practice the design of the machinery never turns upon distinctions between wages differences, differences about hours, or differences about the demarcation of work.
