Excise duty amendments revise manufactured tobacco and fabric duty formulas, substituting specified fixed and ad valorem charging rules. Amendments substitute new third column duty entries in the First Schedule to the Additional Duties of Excise Act: Item No. 4 (manufactured tobacco, sub Item (2)) is replaced by a rule prescribing a specified per thousand charge or an alternative ad valorem plus per thousand charge, whichever is higher; Items No. 19 and No. 22 replace their relevant sub item entries with: the duty for the time being leviable on the base fabrics, if not already paid, plus ten per cent ad valorem.