It shall be competent to the Lord Advocate, on the Behalf of Her Majesty, in place of proceeding by Subpoena and Information as herein-before provided, to commence any such Cause by a Summons in one or other of the Forms in Use in the. Court of Session, for the Time being; and Proceedings may also be taken by Summons as aforesaid at the Instance of any Person or Persons alleging a Ground of Action against the Crown; and where such Cause shall be commenced by Summons, the whole Proceedings shall be conducted throughout as nearly as may be in the like Way and Manner as in Causes depending before the Court of Session, other than Exchequer Causes; and every such Summons to be raised on the Behalf of Her Majesty may contain Warrant to arrest on the Dependence ; and all Diligence shall be competent upon every such Summons to be raised on the Behalf of Her Majesty, and upon any Warrant to arrest on the Dependence contained therein, and with such and the like Operation and Effect as upon any ordinary Summons, or Warrant to arrest on the Dependence contained therein before the Court of Session, according to the Law and Practice in Use in the said Court for the Time in ordinary Causes.