As soon after the said change of boundary as practicable either any city or township, the boundary of which has been changed, may give notice to the other cities or townships, the boundaries of which have been changed by such division, to meet with said city or township giving the notice for a settlement of the matters in difference between said cities or city and township growing out of the said division and change of boundary, which notice may be served, in case of cities, upon the mayor of the city, and in case of townships upon the township clerk, and such notice shall specify the object for which it is given, the place of meeting, which shall be in 1 of said cities or townships, and the time of such meeting, which shall not be less than 20 days after service of such notice as aforesaid.