3. For the purposes of its application to feeding stuffs, the Act is to be read as if—
(a)in section 68(2)(b) the words “to sales in quantities of not more than 25 kilograms” were substituted for the words “to sales of small quantities (that is to say, sales in quantities of not more than fifty six pounds or the prescribed metric substitution)”; and
(b)in section 76(5) the words “six kilograms” were substituted for the words “fourteen pounds or the prescribed metric substitution”.