INDEX 1820, significance for English poetry 12, 14–20 Abrams, M H 3, 4, 252 absorption 270 abstraction 137 Ackroyd, Peter, on the Gothic 39 Addison, Joseph 80, 86 Adorno, Theodor W aesthetic of dialectical negation 230 on art as a commodity 230 on art as knowledge 114n.4 on cultural production as art 223 on Keats and Shelley on lyric poetry 218 “On Lyric Poetry and Society” 219, 220, 223 aestheticism, and lyric poetry 223 Aiken, John, Essays on Song-Writing, on British sources 60