Few things are more baffling to students of history than the true worth of money in different states and ages, and its relative value in reference to our own standards. It is impossible to over-estimate the convenience which tables, showing the fluctuations of currency and prices among different nations, would afford; but the difficulties of completing them may perhaps be insuperable. In order to supply this desideratum, however imperfectly, a few observations are here submitted. In considering the value of money at different periods, a variety of circumstances must be kept in view. There are, however, four elements to be embraced by all calculations for such a purpose: (1) the comparative weight of the coinage; (2) the respective amounts of alloy introduced into the standard of precious metals; (3) the effect produced on gold and silver value by the discovery of America; (4) the fluctuations in prices of commodities. The last of these elements includes and depends upon the others, so that a tariff of prices at various times might be practically sufficient for the object contemplated. The impediments, however, to obtaining such a tariff are apparently insurmountable. Statistical facts, incidentally mentioned by historians, or gleaned from original documents, must be received with large allowance. Articles of costly luxury in one age became abundant in another, and are at all times affected by local or temporary causes. Quality was also variable; horses, oxen, sheep, and poultry, reared or fed in rude times or uncultivated districts, cannot fairly be compared with those perfected by care and expense; the same may be said of wines, fruits, clothing; even land is saleable according to its condition, fertility, or situation. The test usually resorted to in such inquiries is corn; but weights and measures, seldom uniform, are with difficulty ascertained at remote periods, while exceptional prices are more frequently noted than average ones, by observers prone to record striking events rather than every-day facts. There are, however, some apparently admitted data not altogether unavailable for our immediate purpose.