Section 19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .F1 Repealed Annotations Textual amendments F1 S. 19 repealed by Clean Air Act 1956 (c. 52), Sch. 4 ← Section 17, 18 Section 19 Section 20, 21 →