All city taxes on real property remaining uncollected by the treasurer on October 1st and March 1st, following the date when said roll was received by him, or one (1) year thereafter in case an installment collection ordinance applies thereto, shall be returned to the county treasurer in the manner provided by statute for returns by township treasurers for uncollected county and school taxes. Such returns shall include all the additional assessments, charges and fees hereinbefore provided, which shall be added to the amount assessed in said tax roll against each property or person. The taxes thus returned shall be collected in the same manner as other taxes are collected under the statute, and shall be and remain a lien upon the property until paid.