At the moment the Austrian Government published no proof of these conclusions,[25] but, on July 23, forwarded them to the Servian Government in a formal note containing certain demands which, it was intimated, must be satisfactorily answered by Servia within forty-eight hours.[26] This ultimatum included a form of apology to be published on a specified date by the Servian Government, and ten engagements which the Servian Government were to give the Austro-Hungarian Government.  The extraordinary nature of some of these engagements is explained in the next chapter (pp. 103-7).

On July 24 this note was communicated by Austria-Hungary to the other Powers of Europe,[27] and on July 25 it was published in a German paper, the Norddeutsche Allgemeine Zeitung.  It was therefore intended to be a public warning to Servia.  On July 24 the German Government told the Powers that it approved the Austrian note, as being necessitated by the ‘Great-Servian’ propaganda, which aimed at the incorporation in the Servian monarchy of the southern Slav provinces belonging to Austria-Hungary; that Austria, if she wished to remain a Great Power, could not avoid pressing the demands contained in the note, even, if necessary, by military measures; and that the question was one which concerned no Powers except Austria-Hungary and Servia.[28]

Russia did not agree that the Austrian note was directed against Servia alone.  On July 24 the Russian Minister of Foreign Affairs told the British Ambassador at St. Petersburg that Austria’s conduct was provocative and immoral; that some of her demands were impossible of acceptance; that Austria would never have taken such action unless Germany had first been consulted; that if Austria began military measures against Servia, Russia would probably mobilize.  The Russian Minister hoped that England would proclaim its solidarity with France and Russia on the subject of the Austrian note; doubtless Servia could accept some of the Austrian demands.[29] To the Austro-Hungarian Government the Russian Minister sent a message, on the same day, July 24, that the time-limit allowed to Servia for her reply was quite insufficient, if the Powers were to help in smoothing the situation; and he urged that Austria-Hungary should publish the proofs of the charges against Servia.[30] On July 25 Russia told England[31] that Servia would punish those proved to be guilty, but would not accept all the demands of Austria; that no independent state could do so.  If Servia appealed to arbitration, as seemed possible, Russia was, she said, prepared to leave the arbitration in the hands of England, France, Germany, and Italy—­the four Powers whom Sir Edward Grey had suggested as possible mediators.

On the day on which Russia made this suggestion, July 25, the Servian Government replied to the Austrian note, conceding part of the Austrian demands, and announcing its readiness to accept, on the other points, the arbitration of the Hague Tribunal or of the Great Powers.  The Austrian Government found the Servian note unsatisfactory, and criticized its details in an official memorandum.[32] The Austro-Hungarian Minister left Belgrade on July 25; on July 26 a part of the Austro-Hungarian army was mobilized; and on July 28 Austria-Hungary declared war on Servia.