(1) On receiving an application under section 135 to appoint a jury, the Magistrate shall__

1. forthwith appoint a jury consisting of an uneven number of persons not less than five, of whom the foreman and one-half of the remaining members shall be nominated by such Magistrate, and the other members by the applicant;
2. summon such foreman and members to attend at such place and time as the Magistrate thinks fit; and
3. fix a time within which they are to return their verdict.

(2) The time so fixed may, for good cause shown, be extended by the Magistrate.