Public notices how to be made known.

Whenever it is provided by this Act that public notice shall or may be given of anything, such public notice shall be in writing under the signature of the Commissioner

3[or the General Manager] or of a municipal officer empowered under section

4[68 or

68B] to give the same and shall be widely made known in the locality to be affected thereby affixing copies thereof in conspicuous public places within the said locality, or by publishing the same by beat of bataki or by advertisement in the local newspapers, or by any two or more of these means and by any other means that he shall think fit.