Sir, "Cut Population With Green Sex. Bellamy Pleads" proclaims a headline in the Irish Times (January 9th). By "Green" in this context, Dr Bellamy can only mean natural methods of birth control. If so, there is no conflict between interests he represents and the Vatican, which has long held such methods to be licit and beneficial. Yours, etc., Philipsburgh Avenue, Baile Bocht, Dublin 3.