The Jurors contained in such Panels as aforesaid shall be the Jurors to try the Causes at the Assizes and Sittings for which they shall be summoned respectively; and all such Proceedings may be had and taken before such Juries in like Manner, and with the like Consequences in all respects, as before any Jury summoned in pursuance of any Writ or Writs of Venire facias juratores, Distringas juratores, or Habeas corpora juratorum, before this Act.