Whether _Zastrozzi_ (published on or a little before 5th June, 1810) was written to the last lines at Eton, is uncertain. Bearing in mind every young author's impatience to see himself in print, and having regard to the natural consequences of this impatience in the excitable Shelley, I am disposed to think the book would have appeared sooner, had it been ready for the printers before the unruly Etonian left the public school. Time, doubtless, was wasted in the futile negotiation with the Messrs. Longman & Co. But the delay from this cause would scarcely account for the long postponement of the publication, if the author finished the MS. under Mr. Bethell's roof, and on receiving it back from the Longmans, sent it straight to Messrs. Wilkie and Robinson. Whilst the external evidence that Shelley wrote the letter is too light for the scales of criticism, the internal evidence is conclusive that he was not the contributor of the 'A.M. Oxon's' epistle, in behalf of Lord Grenville's candidature for the Chancellorship. Medwin's assertion is idle in respect to the composition, whose style shows it was not, could not have been, written by the author of the puerile letters to the Messrs. Longman, Messrs. Wilkie and Robinson, and Stockdale,--the puerile prose of _Zastrozzi_ and _St. Irvyne_,--and the scarcely less puerile prose of the letters and addresses written by the poet in Ireland. A comparison of the 'A.M. Oxon' letter of November 1809, with the numerous examples of Shelley's English prose, will satisfy the critical reader that Shelley did not, because he could not, write the epistle in behalf of Lord Grenville. The question is one of those questions where the evidence of style is conclusive. It is conceivable the 'A.M. Oxon' letter was well spoken of at Field Place, that it was written at Mr. Timothy Shelley's instance, that Medwin was told Shelley wrote it, that Shelley claimed the authorship of the letter. Establish all these points, produce a copy of the letter in Shelley's hand-writing; and the evidence of style would be none the less conclusive, that Shelley did not write the letter.