This paper describes the level and composition of output of the serv-ice sector during the nineteenth century and the principal trends in both. It considers inputs into the service sector and arrives at conclu-sions, some very tentative, concerning relative levels of output per worker and trends in productivity. The quantitative series produced are of unequal reliability and while we have taken some pains to draw attention to this fact at various places in the text, the reader is further warned to examine the table notes and the long appendix with care before he uses any of these series in his own work.

OUTPUT Table 1 contains two series, each measuring the output of the service sector, in current prices. The concepts, data, and estimating proce-dures underlying the two are somewhat different, and while the series are insufficiently independent to warrant regarding their comparison as a severe test of either, there is something to be gained from the process.