Octavio Paz : Children of the Mire : Modern Poetry from Romanticism to the Avant-Garde, Harvard University Press, 1974, viii+186pp. / Christopher Gillie : Movements in English Literature 1900-1940, Cambridge University Press, 1975, v+207 pp. / Frank Kermode : The Classic, Faber and Faber, 1975, ii+i41pp.