It is not impossible that Clarke had heard this rumour from Lord Elgin, and Lord Elgin from Pitt himself, for Pitt had visited Cambridge on the eve of the dissolution following the Peace of Amiens. On the 16th (December 1801) he was present at the Commemoration dinner in Trinity College Hall.[988] The visit is described by Otter:[989] “It happened that Mr. Pitt was at this time upon a sort of canvassing visit at the university.... At a supper at Jesus Lodge in the company of some young travellers, particularly Mr. Malthus, &c., he was induced to unbend in a very easy conversation respecting Sir Sidney Smith, the massacre at Jaffa, the Pacha of Acre, Clarke, Carlisle,[990] &c.” Though the talk was largely on poetry and foreign politics, it may easily have embraced economics; and the personal meeting may have helped to gain Malthus his appointment as Professor of History and Political Economy at Haileybury College. With or without Pitt, the appointment was made in 1805; and in view of it Malthus was able to carry out, on 13th March 1804, his marriage with Harriet Eckersall (daughter of John Eckersall of Claverton House, St. Catherine’s, near Bath), to whom he had probably been for some years engaged.[991] In 1806 he published the third edition of the essay (in two volumes), in 1807 the fourth edition, and also the letter to Samuel Whitbread on his Bill for amending the Poor Laws. If it is true that he visited Owen at New Lanark, it must have been in the course of the next seven years.[992] There is nothing signed from his pen in that time but a letter to Lord Grenville in defence of the East India College;[993] but in 1814 and 1815 he wrote the _Observations on the Corn Laws_, the _Grounds of an Opinion on the Policy of restricting Importation_, and _The Nature and Progress of Rent_. In 1807 he had been with Horner in Wales, impressing Horner, as they went together from Raglan to Abergavenny, with his idea that the people should “live dear”;[994] and in 1817 he visited Kerry and Westmeath. In the same year, 1817, he published the fifth edition of his essay. 1818 would be memorable to him as the year when Mackintosh joined him at Haileybury as Professor of General Polity and Law in succession to Mr. Christian. In 1819 Malthus appears as Fellow of the Royal Society, though the honour did not tempt him back into physical science.[995] In 1820 appeared the first edition of the _Political Economy_. In 1821, Thomas Tooke, the author of _High and Low Prices_, founded the Political Economy Club, James Mill drafting the rules. Malthus, Grote, and Ricardo were among its members; and the survivors are said to remember well the “crushing criticisms” by James Mill of Malthus’ speeches.[996]