Is the problem one of war times only, or is there anything in the contention that the potential pressure of sea power operates in times of peace in restraint of commercial development? The question is not a simple one, and perhaps it will aid us in understanding the seeming optimism of our historian-president if we try to understand how this matter has been dealt with in the past. The sailing ship has given way to the turbine propeller, the galleon to the dreadnaught, the pinnace to the submarine, but is the freedom of the seas which is being fought for to-day of a kind different from that which was fought for in the days of Drake? And is it to be secured by the same or by different means? * * * * * We need not dwell upon the recognition by Roman law of the principle of the right of all to use the seas as a highway, nor upon the claims of various city-states, notably Venice, to dominate portions of the Mediterranean. In view of recent pronouncements from the Vatican, it is interesting to remember that the claim of Venice, picturesquely symbolized by the annual ceremony of wedding the Adriatic, was based in part upon the gift of a ring accompanying an alleged papal grant, and that the struggle for the freedom of the ocean seas began as a challenge of two actual papal grants of wider significance. In 1454 Nicholas V rewarded the pertinacity of the Portuguese in pushing their discoveries southward along the coast of Africa, by granting to the crown of Portugal exclusive rights of navigation and trade south of Capes Bojador and Non. In 1493, Alexander VI rewarded the crown of Castile for the exploit of Columbus, by giving Spain rights similarly exclusive beyond the meridian one hundred degrees west of the Azores. The details of these arrangements were later modified by mutual agreement of the powers concerned, the final understanding being that Portugal had exclusive rights of trade and navigation by the eastern approach to the Indies, and Spain in the waters of what was supposed to be the western route thither. Both powers stood ready to defend the privileges which the highest international authority of the period had granted them. They proceeded to deal summarily with all foreign vessels found in their preserves. Although the medieval maritime code, the _Consolato del Mare_, provided for sparing the lives of the crew of a captured vessel, the humanitarianism of the king of Portugal took a different form. John II issued orders to his captains to seize all vessels encountered in the barred zone, and instructed them to cast the crews into the sea, "In order that they may die a natural death." * * * * *