SECTION 1. Section ninety-nine of the Municipal Code is hereby a mended by adding thereto the following:
"In case the Military Governor shall not designate a person to act as provincial treasurer, in accordance with the foregoing, then the functions required to be performed by the provincial treasurer in respect to the municipality, its officers, and the assessment and collection of taxes therein in this Code shall be performed by the collector of internal revenue of the district in which the municipality as organized under the Code shall be situate."