Article 19
ART. 19. The grantee shall begin the construction of the street railway herein provided for within one year from the date of the granting of the franchise, and the same shall be completed and in operation within eighteen months after the expiration of said period of one year unless prevented by the act of God, or the public enemy, usurped or military power, martial law, riot, civil commotion, or inevitable cause; otherwise the franchise herein granted shall become liable to forfeiture.