The exponential rate of increase in knowledge is the subject of frequent comment. On almost every established front of inquiry, the last century has witnessed major revisions, reformulations of principle, and technical developments on a remarkable scale, either as antecedents or as consequences of advances in knowledge. In accounting the advances have been modest, certainly not spectacular, unless we include the development of high-speed data processing as an advance. Mattessichs assumptions do not define a particular kind of accounting. Empirical Hypotheses in Accounting, is concerned with some methodological matters. The paucity of work on metrological features of accounting makes any attempt to elaborate on it worthy of attention. The application of the first three classes is not germane to what has always been the principle problem in accounting the assignment of numbers of monetary units to represent some property of assets, equities, income, and costs.