National debt. Revenue and expenditure. Return of national debt, calculated on basis adopted in the statistical abstract [c. 4117] of 1884, giving for the years from 1858-59 to 1870 the information similar to that given in table 9 of the abstract. Return of total gross revenue and total gross expenditure, calculated on system now adopted in tables 2 and 3 of the same abstract, including fortifications, &c., for the years 1859 to 1870 [electronic resource].