The board of park commissioners is hereby authorized and directed to levy a direct annual tax upon all taxable property within said park district and under its control in addition to all other taxes heretofore or hereafter authorized to be levied, sufficient to pay the interest upon and also to pay and discharge the principal of said bonds within twenty years from the date thereof. Said tax shall be extended and collected and paid over to said board of park commissioners by the same officer or officers at the same time and in the same manner as other park taxes are required by law to be extended, collected and paid over.
70 ILCS 1310/9