In lieu of the descriptive lists provided for in said act,¹ it shall be the duty of the Surveyor General² to make out and forward to the prothonotaries of the several counties, lien dockets, to be styled “land lien dockets,” containing lists of all unpatented and patented lands, situate in the counties respectively, upon which there is money due the commonwealth, and in all cases where surveys have been returned, to enter therein the amount of purchase money, interest and all fees due, and said aggregate shall remain a lien on such tract until paid or otherwise legally discharged: Provided, That the several prothonotaries shall be allowed to charge the fees now authorized by law when any information shall be desired from said records, and for entering any certificate under the seal of the surveyor general, setting forth that any lien or part of lien against an unpatented tract has been paid, shall charge the party presenting such certificate a fee of twenty-five cents for entering and filing the same.