Treaty of Paris

Article 3 of the Treaty of Paris of December 10, 1898 defines the metes and bounds of the archipelago by longitude and latitude, degrees and seconds. Technical descriptions are made of the scope of the archipelago as in this may be found on the surface of the earth.

ARTICLE III

Spain cedes to the United States the archipelago known as the Philippines Islands, and comprehending the islands lying within the following line:

A line running from west to east along or near the twentieth parallel of north latitude, and through the middle of the navigable channel of Bacchi, from the one hundred and eighteenth to the one hundred and eighteenth to the one hundred and twenty-seventh degree meridian of longitude east of Greenwich, thence along the parallel and forty-five minutes north latitude to its intersection with the meridian of longitude one hundred and nineteen degrees and thirty-five minutes east of Greenwich to the parallel of latitude seven degrees and forty minutes north to its intersection with the one hundred and sixteenth degree meridian of longitude east of Greenwich, and thence along the one hundred and eighteenth degree meridian of longitude east of Greenwich to the point of beginning.

The United States will pay to Spain the sum of twenty million dollars, within three months after the exchange of the ratifications of the present treaty.

http://www.msc.edu.ph/centennial/treaty1898.html