ND om oN OO oQ Pe = e] Nn -E 1 0 OO ~ < 8 ~~ om PREFACE. THE subject of the following Dissertation is generally allowed to be one, both of high im- portance and of great difficulty. “ From no source,” says Mr. Ricardo, “do so many errors, and so much difference of opinion in the science of political economy proceed, as from the vague ideas which are attached to the word value.” And the same eminent writer, in the preface to the third edition of the Principles of Political Economy and Taxation, emphatically terms it a difficult subject. “In this edition,” says he, “I have endeavoured to explain more fully than in the last, my opinion on the difficult subject of Varug.” | 8 1% 8 © £ £ ~ ) - oO oN Fo) ™ oO 9 oO Q BB - —“— © ~~ 0 - oN 0) ad LO oh) 3 5f. NN on oN ®] — t gr bl TE ’S