It shall be the duty of the several treasurers of the counties of this commonwealth to pay over to their respective successors in office all moneys paid to them for the redemption of unseated land sold for taxes, which may not have been called for by the purchasers, at treasurer's sale, or their legal representatives, during the continuance in office of such treasurer, and that the county auditors be, and they are hereby required to charge the moneys so received to said treasurer, in the same manner that other money received by them is charged, and the same to be paid to the said purchasers or their legal representatives when called for, by orders drawn by the commissioners of the county upon the treasurer as in other cases.