Section 6
SEC. 6. The grantee of this revocable license shall begin the construction of said slipway or marine railway within ninety days, and shall fully complete said .slipway or marine railway and put the same in operation for the public convenience within one year after the passage of this Act; and for a failure to begin the work of construction within the time limited by this section, or to put said slipway or marine railway in full operation for the public convenience within the time herein prescribed, the license granted by this Act to construct, maintain, and operate said slipway or marine railway shall be forfeited and revoked.