Revisions

1887, pp. 41, 42; for 1881"":'1945, see sources for series M 42-44, above. The data shown here for 1821-1864 for series M 47 and for series M 50 are not shown in the source but have been derived· as the residual of the exports and imports data as shown in the source. Prior to 1895, figures for gold and silver relate to coin and bullion only; subsequently they include ore also. Domestic exports of gold and silver cannot be separately stated prior to 1864, but it is probable that the greater portion of the exports