twenty-fifth day of _December_ one thousand seven hundred and eighty-one, to the twenty-fifth day of _December_ one thousand seven hundred and eighty-six, the sum of twenty shillings _per_ ton. [Sidenote: Certain provisoes respecting ships before any person be intitled to the bounty.] 24. Provided always, and it is hereby further enacted by the authority aforesaid, That no person or persons shall be allowed or intitled to receive the bounty herein-before granted, for any ship which shall proceed on the said whale fishery after the twenty-fifth day of _December_ one thousand seven hundred and seventy-five, unless such ship shall sail from the port where she shall be surveyed, and cleared directly on her intended fishery, on or before the tenth day of _April_ in each and every year, and shall continue with her crew in the _Greenland_ seas, or _Davis’s Streights_, or the adjacent seas, diligently endeavouring to catch whales, or other creatures living in those seas, and shall not depart from thence before the tenth day of _August_ then following, unless such ship shall be laden with the blubber and fins of one whale, caught by the crew thereof, or with the assistance of the crew of some other licensed ship, before that time, or shall be forced by some unavoidable accident or necessity to depart sooner from those seas; which accident or necessity shall be verified on the oaths of the master and mate belonging to such ship, upon her return from the said fishery, before the collector and comptroller of the customs at the port where she shall arrive, who shall transmit the same, together with the schedule, licence, and other documents by this act required, to the respective commissioners of the customs for that part of _Great Britain_ where she shall arrive. [Sidenote: If monies arising from the old subsidy be not sufficient to pay bounties, any other revenue money may be taken.] 25. And be it further enacted by the authority aforesaid, That it shall and may be lawful to and for the commissioners of the customs in _England_ and _Scotland_ respectively to order the respective receivers general of the customs, in case the monies remaining in their hands arising from the old subsidy shall not be sufficient at any time or times, during the continuance of this act, to satisfy the said bounty of forty shillings _per_ ton, and thirty shillings _per_ ton, and twenty shillings _per_ ton, during the several periods herein-before limited, payable on all ships employed in the said fishery, according to the directions of this present act, to pay the same out of any money that shall be in their hands arising from any of the duties and revenues under their management respectively. [Sidenote: Commissioners, at the beginning of every session of parliament, to lay before them an account of the ships employed in the whale fishery, _etc._]