1. Any city or town of less than twenty thousand inhabitants and having a special charter, after the taking effect of such charter, may at any time extend its limits by ordinance, specifying with accuracy the new line to which it is proposed to extend such limits. All courts of this state shall take judicial notice of the limits of such city when thus extended.

2. Provided, that should such city by such extension of its territorial limits include any portion of any incorporated city, town or village, such extension shall be made to include the whole territory of such incorporated city, town or village, and upon such extension being made, the corporate existence of such incorporated city, town or village so included in such extension shall, ipso facto, cease, and all property and rights of every kind and nature belonging to and vested in such incorporated city, town or village shall, by operation of law, at once pass to and vest in the city making such extension of its limits, and it shall be the duty of all officers and employees of such incorporated city, town or village having custody or control thereof to surrender and deliver the same to such city so extending its limits; and such city shall also, by operation of law, become liable to pay all debts and liabilities of such incorporated city, town or village; provided further, that before such city shall extend its limits so as to include an incorporated city, town or village, four-sevenths of the qualified voters of the incorporated city, town or village, voting at such election so desired to be included within the limits of such city, shall vote in favor of such proposition at an election, to be determined in the following manner, to wit: Whenever such city shall desire to include within its limits any incorporated city, town or village, the mayor of such city shall inform the mayor or other chief officer of the incorporated city, town or village proposed to be so taken in of its intention to include said city, town or village within the limits; the mayor thereof shall order the question to be submitted to determine the wish of said city, town or village. If four-sevenths of the voters voting on the question shall vote in favor of the proposed extension, the mayor shall certify the result to the mayor of such city, and such city may proceed to extend its limits as provided in this section.