Section 23
SEC. 23. Upon such terms and conditions as may be agreed upon, and at any time during the existence of this franchise, the grantee, his successors, and assigns may construct, maintain, and operate such additional side tracks, double tracks, loops, switches, and passing places as may be deemed useful for the convenient and advantageous operation of the said tramway, the consent of the council of the municipality of Daet having been first obtained: Provided, however, That the construction of such additions to the original tramway shall not be entered upon until the grantee shall have filed with the Consulting Engineer to the Commission, in duplicate, a map or plan of such proposed addition, accompanied by an explanatory statement, and shall have had returned to him a copy of said map with the approval of said Consulting Engineer. All such additions, when completed, shall become a part of the said tramway, and shall be held, maintained, and operated upon the same conditions as those which control the rest of said tramway.