2. Notice to admit documents.

Either party may call upon the other party to admit, within fifteen days from the date of service of the notice any document, saving all just exceptions; and in case of refusal or neglect to admit, after such notice, the costs of proving any such document shall be paid by the party so neglecting or refusing, whatever the result of the suit may be, unless the Court otherwise directs; and no costs of proving any document shall be allowed unless such notice is given, except where the omission to give the notice is, in the opinion of the Court, a saving of expense.