67 Costs of the arbitration.E+W+N.I.
If the arbitrators shall determine that the sum so deposited was sufficient, the costs of and incident to such arbitration, to be determined by the arbitrators, shall be in the discretion of the arbitrators; but if the arbitrators shall determine that a further sum ought to be paid or deposited by the promoters of the undertaking, all the costs of and incident to the arbitration shall be borne by the promoters of the undertaking.