171SIn section 57(1) (byelaws), for the words “301 to 303” there shall be substituted the words “ 201 to 204 ” and for the word “1947”, in both places where it occurs, there shall be substituted the word “ 1973 ”, and, in section 57(2), for the words “the said section 301” there shall be substituted the words “ section 202 of the said Act of 1973. ”