Section 18 of the Principal Act is amended as follows:

(a) by omitting from subsection (1)(b) "authorized" and substituting "authorised" ;

(b) by omitting from subsection (1)(c) "authorized" and substituting "authorised" ;

(c) by omitting from subsection (1)(d) "authorized" and substituting "authorised" ;

(d) by omitting from subsection (3)(b) "pharmaceutical chemist" and substituting "pharmacist" ;

(e) by omitting from subsection (4) "authorize" and substituting "authorise" .