Last Saturday in the Francois Truffaut Season now running on BBC2, "L'Enfant Sauvage", one of his masterpieces, was shown. Set in 18th-century France it is about the attempts of a man of science to civilise a young boy brought up without parents in the wild. Gavin Millar talked to Francois Truffaut when the film was first released here in 1970. From his first film, "The Four Hundred Blows", which looks affectionately at the making of a young delinquent, to "Small Change", made a couple of years ago, his films have often had children at their centre. Gavin Millar also talks to Bill Douglas whose recently completed trilogy about a poor Scottish childhood, "My Childhood, My Ain Folk, My Way Home", is regarded by many as the most important contribution to the British cinema for years.