Pièce 4 - Letter from Dionysius Lardner

Regent Street - DL received WW's paper on political economy and has read it with infinite pleasure ['Mathematical Exposition of Some of the Leading Doctrines in Mr Ricardo's Principles of political Economy and Taxation', Trans. of the Cambridge Philosophical Society, 1831]: 'The idea applying the language and operations of analysis to this science occurred to myself several years ago' but he did not have time to pursue it. DL sends two pamphlets to WW on the subject of money. Had he 'not so often invited, without success, your co-operation in my encyclopaedia, I would now ask you to undertake the article political economy'.