During the life of the League of Nations the Mandates, created in conformity with Article 22 of its Covenant, have only once given rise to proceedings before the Permanent Court of International Justice. The case was that between Greece, as plaintiff, and Great Britain, in her capacity of Mandatory Power, as respondent, over the concessions for certain public works to be constructed by a Greek subject Mavrommatis in Palestine under contracts and agreements which he had concluded with the Ottoman authorities in January 1914. The respondent party immediately raised a preliminary objection to the jurisdiction of the Court. How specious such questions of jurisdiction often are, was proved by the fact that the Court, in a Judgment of 30 August 1924 (Publications P.C.I.J., series A, No. 2), by 7 votes to 5 upheld its jurisdiction in respect of the works at Jerusalem—comprising an electric tramway system, the supply of electric light and power and of drinking water to the city—, while, obviously unanimously, denying it in respect of similar works—including in addition a system of irrigation of the city gardens—at Jaffa. This decision was based on an adjudication clause, obtaining in Article 26 of the Mandate for Palestine of 24 July 1922. On the strength of that Judgment the merits of the controversy over the Jernsalem concessions were dealt with in subsequent proceedings, terminated by a second Judgment of 26 March 1925 (ibid., series A, No. 5), by which (this time with only one dissenting vote), inter alia, the concessions concerned were found to be valid and Article 4 of Protocol XII, annexed to the Peace Treaty of Lausanne of 1923, concerning certain concessions granted in the Ottoman Empire— providing for the obligatory adaptation thereof to the new economic conditions—was held to be applicable to them.—When the ensuing lengthy negotiations between Great Britain and Greece for such adaptation reached deadlock in 1927, Greece again applied under the said Article 26 of the Mandate to the Permanent Court, with the object of achieving the award of damages for the asserted failure of Great Britain, in carrying-out the second Judgment, to comply with another provision (Article 11) of the Mandate, dealing with the methods of developing the country. Once more the British Government raised a preliminary objection to the jurisdiction of the Court, maintaining that it was not competent to deal with this element of the dispute, and this time, by 7 votes to 4, the Court, by a third Judgment of 10 October 1927 (ibid., series A, No. 11), upheld the objection for reasons too technical to be summarized here.