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 ammunitions; he dissuaded or recommended to Congress foreign applicants for commissions in the colonial army; he arranged exchanges of prisoners-of-war; he equipped and to some extent directed the operations of privateers; he supplied information to many Europeans emigrating to America; he made treaties of amity and commerce with Sweden and Prussia. With all this engrossing business on his hands, he found time to achieve an immense personal popularity. He was not merely respected as a masterly diplomat; he was lionized and idolized as the great natural philosopher, the august champion of liberty, and the friend of humanity. In the press of public affairs, never losing interest in scientific matters, he served on a royal French commission to investigate Mesmerism; sent to his foreign correspondents ingenious geological and meteorological conjectures; and transmitted to the Royal Society reports on French experiments in aeronautics. He entertained with a certain lavishness at his house in Passy; and he was a frequent diner-out, adored for his wit and good humor, in the intimate coteries of Mme. Helvetius and Mme. Brillon. He set up for the amusement of himself and his friends a private press in Passy, on which he printed a number of bagatelles of an accomplished and charming levity: The Ephemera, 1778; The Morals of Chess, 1779; The Whistle, 1779; The Dialogue Between Franklin and the Gout, 1780. In 1784 he resumed work on his unfinished autobiography,