“No appeal shall lie without the leave of the judge or of the Court of Appeal from any interlocutory order or interlocutory judgment made or given by a judge except in the following cases - (i) where the liberty of the subject or the custody of infants is concerned; (ii) where an injunction or the appointment of a receiver is granted or refused; (iii) in the case of a decree nisi in a matrimonial cause or a judgment or order in an Admiralty action determining liability; (iv) in such other cases, to be prescribed by rules of court, as may in the opinion of the authority having power to make such rules of court be of the nature of final decisions.” (i) where the liberty of the subject or the custody of infants is concerned; (ii) where an injunction or the appointment of a receiver is granted or refused; (iii) in the case of a decree nisi in a matrimonial cause or a judgment or order in an Admiralty action determining liability; (iv) in such other cases, to be prescribed by rules of court, as may in the opinion of the authority having power to make such rules of court be of the nature of final decisions.”