SECTION 1. Section four of Act Numbered Twenty-three hundred and sixty-one is hereby amended, by extending the time allowed to the grantee under said Act, to read as follows:
"SEC. 4. The grantee shall, before the expiration of two years next following August twenty-seventh, nineteen hundred and sixteen, file with the Director of Public Works plans of the work proposed by him under the terms of this franchise. The grantee shall begin work under said plans within six months after the grantee has been empowered to commence work thereunder, as provided in section one of this Act, and the grantee shall complete the construction of said works and commence the operation of the same within five years after the grantee has been empowered to commence work thereon, unless prevented by act of God, public enemy, usurped or military power, martial law, riot, civil commotion, or inevitable cause. Should said grantee, for causes other than those mentioned above, default, in the time set either for such beginning or such completion, the grant herein and hereby made shall be subject to forfeiture: Provided, That the Governor-General in any event may, in his discretion, extend the time for either such beginning or such completion."