In this reassessment of the 19th century monetary theorist and banking reformer, Thomas Joplin, Professor O'Brien sets out to place his subject in a new perspective. He discusses Joplin's role as a reformer and his relationships with fellow economists and explores such issues as the problems of paper currency, the principle of metallic fluctuation, agricultural prices and the monetary system and the structure of banking. The book should be of interest to anyone interested in the development of monetary economics as well as to economic historians.