In what follows, all attention is directed atfinal product output, and at comparative quantities of services relative to commodities produced and consumed in a wide variety of nations. The presentation will be divided between a discussion of the problems of measurement of services in an international context and a description of the empirical results derived from a combined cross-section and time-series analysis of service- commodity output composition. The nature of the evidence in this analysis bears more on intercountry comparisons than on intertemporal ones. That is, more reliable statistical light