64 Pa. Stat. § 534
All the in-lots and out-lots, and reserved tracts in and adjoining the towns of Beaver, Erie, Waterford, Franklin and Warren, which have heretofore been sold in pursuance of an act of assembly, and upon which there is any of the original purchase money due, shall pay at the rate of two per cent. per annum, from the time mentioned in the act for the sale of such lots or tracts; and that all laws requiring an actual settlement on any of the above mentioned reserve tracts, be and the same are hereby repealed: Provided, That the in-lots, out-lots, and reserved tracts mentioned in this section, which upon appraisement in the manner provided for in the act relative thereto, approved April 13, 1838, shall have been or may be rated in the fourth class as number four, may be patented on the payment of the original purchase money due thereon, with the patenting fee, without interest, until the aforesaid first day of December, 1859.
64 P.S. § 534