The tenth demand, which in effect allowed Austrian agents to control the police and courts of Serbia, it was not possible for Serbia to accept without abrogating her sovereignty. However, it was not unconditionally rejected, but the Serbian Government asked that it be made the subject of further discussion, or be referred to arbitration. The Serbian Government assented to the eleventh demand, on the condition that if the explanations which would be given concerning the alleged anti-Austrian utterances of Serbian officials would not prove satisfactory to the Austrian Government, the matter should be submitted to mediation or arbitration. Behind the threat conveyed in the Austrian ultimatum was the menacing figure of militant Germany. The veil that had hitherto concealed the hands that worked the string, was removed when Germany, under the pretense of localizing the quarrel to Serbian and Austrian soil, interrogated France and England, asking them to prevent Russia from defending Serbia in the event of an attack by Austria upon the Serbs. England and France promptly refused to participate in a tragedy which would deliver Serbia to Austria as Bosnia had been delivered. Russia, bound by race and creed to Serbia, read into the ultimatum of Teutonic kultur a determination for warfare. Mobilization of the Russian forces along the Austrian frontier was arranged, when it was seen that Serbia's pacific reply to Austria's demands would be contemptuously disregarded by Germany and Austria. During the days that intervened between the issuance of the ultimatum and the actual declaration of war by Germany against Russia on Saturday, August 1st, various sincere efforts were made to stave off the world-shaking catastrophe. Arranged chronologically, these events may thus be summarized: Russia, on July 24th, formally asked Austria if she intended to annex Serbian territory by way of reprisal for the assassination at Sarajevo. On the same day Austria replied that it had no present intention to make such annexation. Russia then requested an extension of the forty-eight-hour time-limit named in the ultimatum. Austria, on the morning of Saturday, July 25th, refused Russia's request for an extension of the period named in the ultimatum. On the same day, the newspapers published in Petrograd printed an official note issued by the Russian Government warning Europe generally that Russia would not remain indifferent to the fate of Serbia. These newspapers also printed the appeal of the Serbian Crown Prince to the Czar dated on the preceding day, urging that Russia come to the rescue of the menaced Serbs. Serbia's peaceful reply surrendering on all points except one, and agreeing to submit that to arbitration, was sent late in the afternoon of the same day, and that night Austria declared the reply to be unsatisfactory and withdrew its minister from Belgrade.