Websters tables, [electronic resource] : for interest direct and to rebate at 8, 7 1/2, 7, and 6, per centum to 12 moneths. Rebatement at 8 l. per centum to 36 moneth. And for direct interest at 10, and 4 l. per centum. : Also, for compound interest to 31 years, with the true valuation of annuities, leases, fines and reversions with a necessary addition concerning half yearly and quarterly payments. Together with a convenient table for the speedy and exact summing up of the price of commodities, serving also for a table of reduction, and for direct interest at 5 l. per cent. : Whereunto is now added, certain tables, very necessary for the ready reducing of gold and silver into standard. / By William Webster.