reference to a Metropolitan Magistrate ; (c) any shall,- reference to a Magistrate of the first class (i)in relation to a metropolitan area, be construed as a reference to a Metropolitan Magistrate exercising jurisdiction in that area, (ii)in relation to any other area, be construed reference to a Judicial Magistrate of the first exercising jurisdiction in that area ; as a class (d) any reference to the Chief Judicial Magistrate shall, in relation to a metropolitan area, be construed as a reference to the Chief Metropolitan Magistrate exercising jurisdiction in that area. (2) In this Code, unless the context otherwise requires, any reference to the Court of a Judicial Magistrate shall, in relation to a metropolitan area, be construed as a reference to the Court of the Metropolitan Magistrate for that area. (3) Unless the context otherwise requires, any reference in enactment passed before the commencement of this Code,- any (a) to a Magistrate of the first class, shall be construed as a reference to a Judicial Magistrate of the first class; 815 (b) to a Magistrate of the second class or of the third class, shall be construed as a reference to a Judicial Magistrate of the second class ; (c) to a Presidency Magistrate or Chief Presidency Magistrate, shall be construed as a reference, respectively, to a Metropolitan Magistrate or the Chief Metropolitan Magistrate ; (d) to any area which is included in a metropolitan area, as a reference to such metropolitan area, and any reference to a Magistrate of the first class or of the second class in relation to such area, shall be construed as a reference to the Metropolitan Magistrate exercising jurisdiction in such area. (4) Where, under any law, other than this Code, exercisable by a Magistrate relate to matters- the functions (a) which involve the appreciation or sifting of evidence or the formulation of any decision which exposes any person to any punishment or penalty or detention in custody pending investigation, inquiry or trial or would have the effect of sending him for trial before any Court, they shall, subject to the provisions of this Code, be exercisable by a Judicial