After they procured a copy, Shelley wrote to the Olliers on 10 November 1820: "Mr. Gisborne has sent me a copy of the 'Prometheus,' which is certainly most beautifully printed. It is to be regretted that the errors of the press are so numerous, and in many respects so destructive of the sense of a species of poetry which, I fear, even with this disadvantage, very few will understand or like." A corrected edition was sent on 20 January 1821 along with a letter from Shelley that explains "the Errata of 'Prometheus,' which I ought to have sent long since – a formidable list, as you will see". Shelley did not forget the printing errors, and even criticised Charles Ollier later when Shelley sent "Adonaïs" to be published.