(a) When any territory exists, to the extent of at least three acres, contiguous, unimproved and adjoining the lines of the city, the city council may, by ordinance duly passed, discontinue such territory as a part of the city, provided the application for such discontinuance or disannexation shall set forth in writing the territory desired to be discontinued and describe the territory desired to be discontinued by metes and bounds as in the case of annexation of territory provided by the charter.
(b) Subsection (a) shall not be construed as limiting the authority of the city to make mutually agreeable boundary changes with other municipalities in accordance with state law. (Code 1941, Art. 29-1; Ord. 20059)