Preface by Mrs. Jevons.--Preface to the second edition.--Introduction by Professor H.S. Foxwell.--I. On the study of periodic commercial fluctuations (1862)--II. A serious fall in the value of gold ascertained, and its social effects set forth (1863)--III. The variation of prices, and the value of the currency since 1782 (1865)--IV. The depreciation of gold (1869)--V. On the frequent autumnal pressure in the money market, and the action of the Bank of England (1866)--VI. The solar period and the price of corn (1875)--VII. The periodicity of commercial crises and its physical explanation (1878), with postscript April (1882)--VIII. Commercial crises and sun-spots (1878-9)--IX. On the condition of the gold coinage of the kingdom, with reference to the question of international currency (1868)--X. An ideally perfect system of currency (1875) (not previously published)--XI. Gold and silver: a letter to M. Wolowski Sir Isaac Newton and bimetallism. (Left unfinished in 1882) With an appendix of fragments on bimetallism from the author's mss.--Appendix on the theory of cycles.--Index.