These were the matters under discussion when I was called to Washington in February, 1916, for consultation with the President. The long and wearing controversy had been going on for months. Every month notes were coming from Berlin, each more evasive and unsatisfactory than the last. Every week Count Bernstorff and his aides were coming to the State Department with new excuses, new subterfuges, and the same old lies. The President and Secretary Lansing, both of whom are excellent international lawyers, found their patience tried to the uttermost by the absurdity of the arguments presented to them and by the veiled contempt in the manner of the presentation. But they kept their tempers and did their best to keep the peace. On two points they were firm as adamant. First, the law of nations should not and could not be changed in the midst of a war to suit the need of one of the parties. Second, "the use of submarines for the destruction of commerce is of necessity, because of the very character of the vessels employed and the very methods of attack which their employment of course involves, incompatible with the principles of humanity, the long-established and incontrovertible rights of neutrals, and the sacred immunities of non-combatants." (President Wilson's Address to Congress, April 19, 1916.) It was on my return from this visit to Washington that I had an opportunity of observing at close range the crooked methods of the Potsdam gang in regard to the U-boat warfare. Arriving at The Hague on March 24, 1916, I found Holland aflame with helpless rage over the recent sinking of the S.S. Tubantia, the newest and best boat of the Netherlands-Lloyd merchant-fleet. She was torpedoed by an unseen submarine on March 15. An explanation was promptly demanded from the German Government, which denied any knowledge of the affair. Holland, lacking evidence as to the perpetrator of the crime, would have had to swallow this denial but for an accident which furnished her with the missing proof. One of the Tubantia's small boats drifted ashore. In the boat was a fragment of a Schwarzkopf torpedo--a type manufactured and used only by Germany. This fragment was forwarded to Berlin, with another and more urgent demand for explanation, apology, and reparation. The German newspapers coolly replied with the astounding statement that there had been two or three Schwarzkopf torpedoes in naval museums in England, and that this particular specimen had probably been given to a British submarine and used by her to destroy the good ship Tubantia. Again Holland would have been left helpless, choking with indignation, but for a second accident. Another of the lost steamship's boats was found, and in it there was another fragment of the torpedo. This fragment bore the mark of the German navy, telling just when the torpedo was made and to which of the U-boats it had been issued.