Section 1. Be it enacted, &c., That any county in which the county poor districts were abolished and each borough and township was created a separate poor district to be administered by overseers of the poor, the county commissioners shall levy such taxes, from time to time, as shall be required to pay the interest and maturing principal on any bonds issued by the county commissioners in any of said counties to secure the repayment of money borrowed to take care of the poor during the period when the county commissioners were acting as poor directors and supporting and providing for the poor in the counties named.