The Summons shall be served upon the Defendant by the Barmaster Fourteen clear Days at least before the Day appointed for the Trial, by leaving such Summons at the usual or last Place of Abode of such Defendant, and by affixing a Copy thereof on some conspicuous Part of the Mine to which the Question of Title, Trespass, or Debt to be tried has Reference; and upon Proof of the Service of such Summons the Plaintiff shall be at liberty, if the Defendant do not appear, to proceed to Trial, and if the Steward shall think that he is entitled to recover he shall have Judgment: Provided always, that in Cases where there are more Defendants than One, Service on One of such Defendants shall be deemed sufficient.