Auxiliary duty amendment inserts an additional schedule entry into the customs exemption notification, modifying the tariff schedule. The Central Government, exercising powers under the Customs Act and the Finance Act, amends Notification No. 207/87-Customs by inserting, after S. No. 290, a new S. No. 291 referring to Notification No. 258 Customs dated the 2nd July, 1987, thereby adding that entry to the Schedule of miscellaneous exemption notifications.