After the arbitrators shall have accepted the appointment, the Collector shall transmit the whole of the papers to them, and it shall be competent to the Collector to exercise towards the arbitrators the same powers and authority for securing their attendance, and the due completion of their award, which he is competent to exercise towards witnesses summoned before him when acting judicially, for the purpose of compelling them to attend and give evidence.
     The Collector shall also fix a time within which the arbitrator or arbitrators shall deliver the paper of partition. On sufficient cause shown, the Collector may extend such period.