sovereigns shall appoint three astrologers and three pilots or three mariners who are experts in navigation, who shall assemble at a place on the frontier between the kingdoms, where it shall be agreed that they assemble, within four months of the time when the emperor and king of Castilla, or his successors, shall be notified by the said King of Portugal to appoint a day. There they will consult, covenant, and agree upon the manner of ascertaining the right of said proprietorship conformable to said treaty and contract made between the said Catholic sovereigns, Don Fernando and Doña Isabel, and the said King Dom Joam the Second of Portugal. In case the said emperor and king of Castilla be judged to have the right of said proprietorship, such sentence will not be executed nor used until the said emperor and king of Castilla or his successors shall first have actually returned all the said three hundred and fifty thousand ducats, which by virtue of this contract shall have been given. If the right of proprietorship be conceded to the said King of Portugal, the said emperor and king of Castilla or his successors shall be obliged actually to return the said three hundred and fifty thousand ducats to said King of Portugal or his successors within the first four years ensuing after the date of such sentence.
Item: It was covenanted and agreed by said deputies, in the names of their said constituents, that, since this contract of sale shall be valid and hold good henceforth from date, if any spices or drugs of any sort whatever be brought to any ports or parts of the kingdoms and seigniories of either of the said constituents, in charge of the vassals, subjects or natives of the kingdoms of the said emperor and king
