A letter headed 'Secret Information from Hamburg,' and bearing date August 16, 1798, has found its way into Lord Castlereagh's correspondence.[198] The writer, clearly Turner, is found back at Hamburg after one of his periodic visits to Paris, where, with his usual _audace_, he claimed to be an accredited envoy of the United Irishmen, and sought to discredit the mission of Lewins. Before Tandy had left Paris for Dunkirk, where the 'Anacreon' was being equipped for Ireland, he had some unpleasant differences with Lewins and Wolfe Tone.[199] This afforded prospect of a golden harvest for our spy. Tone had long avoided Turner; Lewins repudiated his pretensions. Our spy now 'sided' with Tandy's party, and intrigued to such purpose that he seems to have got himself appointed _locum tenens_ of the general. In this affair Muir and Madgett, with honest motives, bore a part. Muir, a distinguished Scotch advocate, had attached himself to the republican interest, and was tried for sedition.[200] Madgett--an old Irish refugee--held a post in the Foreign Office in Paris, and will be remembered by readers of Tone's Diary as in constant communication with him. It is needless to quote in full the anonymous letter of our spy. It will be found in the 'Castlereagh Papers,' vol. i. pp. 306-9. The men noticed in it, McMahon and O'Coigly, McCann and Lowry, had been old allies of Turner's; and 'Casey, brother to the priest,' Tone, Tandy, Lewins, Teeling, Orr of Derry, McCormack, all figure in the original information conveyed to Lord Downshire. The letter begins by saying that 'Tandy, having quarrelled with Lewins and Tone, called a meeting of United Irishmen, at which a division took place; the numbers pretty equal.' Tandy's rupture with Lewins was quite enough to make Turner take Tandy's side. Dating from Hamburg, and believing that the real 'minister of the interior' was a good cook, he writes:-- A General Creevy, who goes with the great expedition [to Ireland], called on me one day at Paris and stayed dinner. Muir and Madgett were of the party. It was for the purpose of inquiring into Tone's character, which we gave him. Madgett and Muir swore me into the Secret Committee for managing the affairs of Ireland and Scotland in Tandy's place: there are only we three of the committee.