Section 11. If any party to a suit shall require the attendance of any other Special application[party thereto a

11. If any party to a suit shall require the attendance of any other Special application[party thereto as a witness to be enforced, he shall, by ] to compel attendance ot party to a suit as a[himself or his pleader, make a special application to the ] witness. Court for an order for a summons to compel the attendance of the party, and shall show to the satisfaction of the Court sufficient - . grousds in support of such application .; otherwise a summons shall not be issued. In cases in which, according to the practice of the Court, a day is fixed for the trial, the application shall be made before such day shall be fixed.