IN this series of talks, which she will broadcast at fortnightly intervals, Miss Sackville-West will review the course of English poetry since the opening of the century, dealing with the pre-war poets who wrote between 1900 and 1914, the poets of the war, and those of the post-war age. She herself, after making an assured reputation amongst the more perceptive critics with such books as ' Passenger to Teheran ' and ' Seducers in Ecuador,' became recognized as one of our foremost living poets when her epic of the English country, ' The Land,' was last year awarded the Hawthornden Prize.