“ The United States of America, the British Empire, France and Japan have through their respective Plenipotentiaries, agreed upon the following stipulations supplementary to the Quadruple Treaty signed at Washington on December 13, 1921:
The term "insular possessions and insular dominions" used in the aforesaid Treaty shall, in its application to Japan, include only Karafuto (or the Southern portion of the island of Sakhalin) , Formosa and the Pescadores, and the islands under the mandate of Japan. ”

“ If there should develop between any of the High Contracting Parties a controversy arising out of any Pacific question and involving their said rights which is not satisfactorily settled by diplomacy and is likely to affect the harmonious accord now happily subsisting between them, they shall invite the other High Contracting Parties to a joint conference to which the whole subject will be referred for consideration and adjustment. ”