SECTION 1. Paragraph (e) of section twenty-one of Act Numbered Eighty-two, known as "The Municipal Code." as amended, is hereby further amended by adding at the end thereof the following proviso:
Provided, That the treasurer of any municipality, when specially specially authorized by resolution of the municipal council and upon the approval of the provincial treasurer and the Executive Secretary may deposit the funds of the municipality in any duly authorized depository of the Government of the Philippine Islands situated within the municipality. The resolution of the council authorizing any such deposit or deposits shall set forth clearly the period for which the same shall be made, whether with or without interest, and if with interest, the rate thereof."