SECTION 1. The Municipal Board of the city of Manila shall amend paragraph numbered seven of Part Two of Ordinance Numbered Forty-four, enacted in pursuance of Act Numbered Four hundred and eighty-four of the Philippine Commission, by inserting in lieu of the word "twenty" in the sixth line of said paragraph the word "thirty-two," so that said paragraph shall read as follows:
"PAR. 7. The grantee shall begin the construction of the system within the city of Manila within six months from the date of the granting of the franchise, and shall complete the construction of so much of the system as shall be coextensive with the lines of the street railway to be constructed under Part One hereof, and commence the operation of the same within thirty-two months thereafter, unless prevented by act of God, or the public enemy, usurped or military power, martial law, riot, civil commotion, or inevitable cause. The failure of the grantee to comply with the conditions of this paragraph shall render the franchise in this part described liable to forfeiture."