LAST week Miss Sackville-West, the author of the Hawthornden prize poem, ' The Land,' gave the introductory talk in her series on Modern English Poetry. This evening she will continue her treatment of this most interesting subject; the history of poetry through the pre-war, war-time and post-war periods. In these twenty-eight years almost every art has been revolutionized and re-shaped, as new ideas have evolved new forms.