If the peace advocates in the United States, who limit their energies to the establishment of the machinery for arbitration or conciliation, would go one step farther and work out such a plan as that suggested above for getting rid of a national controversy before it becomes acute, they would render invaluable service to their country. The ownership of the delta of the Colorado River and the head of the Gulf of California is one of those certain points of danger that should be removed. The people of Mexico must realize that, and the creation of a neutral zone and the neutralization of the Gulf of California would be of infinitely greater value to Mexico than the small tract she would transfer to the United States could ever be under any circumstances. For Mexico to continue to hold it, creates a constant danger of friction or conflict which would be entirely removed if it were taken over by the United States. The situation now is exactly as though one man owned the doorway to another man's house. He could make no real beneficial use of it except to embarrass the owner of the house. Such a situation can only result in controversy. Is it not possible that the advocates of national arbitration and conciliation or of an International Court can be induced to see this and use their efforts to accomplish a great national benefit that is entirely practicable? The plan above proposed would have all the merits claimed for International Arbitration and Conciliation and for an International Peace Tribunal. That is what the proposed International Peace Commission between this country and Mexico would be, in fact, and its value and success being demonstrated in one place where it could be practically put in operation, it would be much easier to get the same plan adopted in wider fields by other nations, and perhaps gradually evolve a world-wide system for an International Peace Tribunal that way. Another change that should be made in existing boundary lines to facilitate the development of the resources of that country and its settlement by a dense population, is shown by the map on the following page. State lines in the arid region should have been located, so far as possible, where they would have followed the natural boundaries of hydrographic basins. When early errors can be now corrected with advantage to the people it should be done. The development of Northern California would be facilitated by separating it from Southern California at the Tehachapi Mountains. Then the great problem of the reclamation and settlement of the 12,500,000 acres in the Sacramento and San Joaquin valleys could be solved much easier than as the state is now constituted. It would also be to the advantage of Southern California to be able to deal with its vast problems of irrigation development without being complicated with those of Northern California. [Illustration]