It shall and may be lawful to and for the holder or holders of any unsatisfied warrant and warrants, heretofore issued for lands, agreeably to the seventh section¹ of the act, entitled “An act to alter and amend an act of assembly, entitled ‘An act for opening the Land-Office, for granting and disposing of the unappropriated lands within this state,’ ” passed on December 21, 1784, to locate the quantity of land for which such unsatisfied warrant and warrants was and were granted in any district of vacant and unappropriated land within this commonwealth; provided the owner or owners of such unsatisfied warrants shall be under the same regulations and restrictions, as other owners of warrants taken for lands lying north and west of the Allegheny river and Conewango creek, are made subject by this act, the said recited act or any other act or acts of the General Assembly to the contrary thereof in any wise notwithstanding.