Section XIII Proviso for Naval Stores bought for the King's Use.

X1 Provided always That nothing in this Act contained shall extend or be construed to extend to charge with the Duty hereby granted such Naval Stores as shall appeare by Certificate from the Co[m]missioners of the Navy to have been by them contracted for or bought for the Service of his Majesties Navy before the Five and twentieth Day of March One thousand six hundred ninety seven Any thing in this Act contained to the contrary notwithstanding.