Emma Helen Blair, The Philippine Islands, 1493–1803… (1903)
“ The latter power's remonstrances against this infringement of her former rights lead to the Treaty of Tordesillas (June 7, 1494) , in which, by mutual agreement between the sovereigns, a new line of demarcation is established to be drawn two hundred and seventy leagues farther west than that of Alexander VI; and another document (dated April 15, 1495) makes suitable arrangements for a scientific and equitable determination of this boundary. ”
