J.R.R. Tolkien's literary cosmos may not be the most elaborate of the imaginary worlds in existence, it is certainly the most influential. The posthumous editorial work of Tolkien's son Christopher has also shown that Arda remains unrivalled in its consistency and complexity. Additionally, the re-publication of Tolkien's Andrew Lang lecture 'On Fairy-stories' (originally delivered 1939) and its interpretation within the discourse of literary fantasy...