53. Temporary injunctions are such as are to continue until a specified time, or until the further order of the Court. They may be granted at any period of a suit, and are regulated by the Code of Civil Procedure. A perpetual injunction can only be granted by the decree made at the hearing and upon the merits of the suit: the defendant is thereby perpetually enjoined from the assertion of a right, or from the commission of an act, which would be contrary to the rights of the plaintiff.