On 2 March 1811, a week before the first advertisement for Poetical Essay appeared, Shelley wrote to Leigh Hunt, editor of The Examiner , congratulating him on his acquittal after being tried for having published on 2 September 1810 an article entitled ‘One Thousand Lashes!!’ which condemned military flogging. Addressing Hunt as ‘a common friend of Liberty ‘, he concluded thus: ‘On account of the responsibility to which my residence at this University subjects me, I of course, dare not publicly to avow all that I think, but the time will come when I hope that my every endeavour, insufficient as this may be, will be directed to the advancement of liberty’ ( Letters , vol. I, p. 54). Although Shelley’s undergraduate career at Oxford was terminated by the end of the month, the publication of Poetical Essay had confirmed his newly assured poetic voice. This major discovery not only expands and enhances the Shelley canon, it also offers evidence of an earlier provenance than was hitherto known for ideas developed more extensively in Queen Mab (1813) and in such celebrated later poems as The Mask of Anarchy (1819).