4In subsection (5) of section 9 of the Rating and Valuation (Apportionment) Act 1928 after the word " heritages" where it first occurs there shall be inserted the words " (other than lands and heritages in respect of which the rateable value is prescribed or determined by or under an order under section 6 of the [1975 c. 21.] Local Government (Scotland) Act 1975) ".