506. If the sum for which a bill has been presented as aforesaid is not paid into the office of the 1[Corporation], or to a person empowered by a regulation to receive such payments, within fifteen days from the presentation thereof, the 2[Municipal Commissioner] may cause to be served upon the person liable for the payment of the said sum a notice of demand in the form prescribed by rule.
<span style="margin-left:15px;"></span><span style="margin-left:15px;"></span><span style="margin-left:15px;"></span><b>506.</b> If the sum for which a bill has been presented as aforesaid is not paid into the office of the <b><sup>1</sup></b>[Corporation], or to a person empowered by a regulation to receive such payments, within fifteen days from the presentation thereof, the <b><sup>2</sup></b>[Municipal Commissioner] may cause to be served upon the person liable for the payment of the said sum a notice of demand in the form prescribed by rule.<br>