493. Paragraph 10 has been amended in its application to the States of Tripura and Mizoram by the Sixth Schedule to the Constitution (Amendment) Act, 1988 (67 of 1988), s. 2, as under:- (a) in the heading, the words "by non-tribals" shall be omitted; (b) in sub-paragraph (1), the words "other than Scheduled tribes" shall be omitted; (c) in sub-paragraph (2), for clause (d), the following clause shall be substituted, namely:- "(d) prescribe that no person resident in the district shall carry on any trade, whether wholesale or retail, except under a licence issued in that behalf by the District Council:".