First published in Tait’s (September 1845), pp. 545–54; reprinted in F, Essays on the Poets and Other Writers (1853); in SGG, vol. 6, Sketches, Critical and Biographic, pp. 234–68. No manuscript has been identified, but De Quincey does set forth his central thesis for this essay in a note written on 14 January 1844 (MS collection of Professor Paul Betz., Georgetown University); in the Transcripts in this volume, see: Fragments, 1844.