Before any commissioners appointed by any ordinance of said corporation under the preceding sections hereof shall proceed to the performance of their duty, they shall give daily notice, in at least two newspapers in the City of Baltimore, of the object of the ordinance under which they propose to act, at least thirty days before the time of the first meeting to execute the same. P.L.L., 1888, §797 1915, §822 1927, §822 1930, §822 1938, §1017 1949, §632 1969, §20-6 1868, ch. 181 1898, ch. 123, §822