Central Excise tariff amendment reassigns exemptions and renumbers entries; ad valorem duty rates adjusted accordingly. The Central Government directs amendments to Notifications No. 180/88, 182/88, 184/88 and 223/88 by omitting specified serial entries from the Tables, deleting provisos and Explanations in Notification No. 180/88, renumbering remaining entries, substituting the words 'Central Excise Rules, 1944' for existing rule references, and replacing existing column entries in Notification No. 223/88 with revised ad valorem duty entries for designated serials.