Cabo Verde islands to the above-mentioned line,--in whatsoever part, even to the said poles, of the said two hundred and fifty leagues they may be found, determining a boundary or straight line from pole, to pole, where the said two hundred and fifty leagues end. Likewise all the islands and mainlands found and discovered up to the said twenty days of this present month of June, by the ships and subjects of the said King and Queen of Castilla, Aragon, etc., or in any other manner, within the other one hundred and twenty leagues that still remain of the said three hundred and seventy leagues where the said bound that is to be drawn from pole to pole, as aforesaid, must be determined, and in whatever part of the said one hundred and twenty leagues, even to the said poles that they are found up to the said day, shall pertain to and remain forever in the possession of the said King and Queen of Castilla, Aragon, etc., and of their successors and kingdoms; just as whatever is or shall be found on the other side of the said three hundred and seventy leagues pertaining to their Highnesses, as aforesaid, is and must be theirs, although the said one hundred and twenty leagues are within the said bound of the said three hundred and seventy leagues pertaining to the said King of Portugal, the Algarbes, etc., as aforesaid. [163] And if, up to the said twentieth day of this said month of June, no lands are discovered by the said ships of their Highnesses within the said one hundred and twenty leagues, and are discovered after the expiration of that time, then they shall pertain to the said King of Portugal as is set forth in the above. [The faithful observance by the respective sovereigns, of every point of this treaty is provided for in the fullest of terms by the commissioners, by virtue of the powers delegated to them; and this is sworn "before God, the Blessed Mary, and on the sign of the Cross." The instrument must receive also the sanction of the Pope, who will be asked to confirm the same by means of a bull in which the agreements of the treaty will be given. [164] The commissioners bind themselves under the foregoing oaths and penalties that, "within the one hundred days immediately following the date of this treaty, they will mutually exchange approbations and ratifications of the said treaty, written on parchment, and signed with the names of their said constituents, and sealed with their seals." Don Juan, heir to the Spanish crown, shall sign the instrument as well as Ferdinand and Isabella, and the whole shall be witnessed in proper manner.] Note on Correspondence of Jaime Ferrer