On the day after the signature of the treaty the Prussian project of reform was presented to the federal diet. It was, however, no more than a bid for the support of public opinion on the part of Bismarck; for even while it was under discussion an angry correspondence was being carried on between Berlin and Vienna on the question of armaments, and by the beginning of May both powers were making undisguised preparations for war. On the 21st of April, the very day when the discussion of the Prussian proposals began in the diet, Austria, alarmed at a threatened attack by Garibaldi on Venetia, began to mobilize in defiance of an agreement just arrived at with Prussia. Five days later, in spite of this, she sent an ultimatum to Berlin, demanding the continuance of the Prussian disarmament and an immediate settlement of the Schleswig-Holstein question. The supreme issue was, however, delayed for a few weeks by the intervention of Napoleon, who, urged on by the loud alarm of the French people at the prospective aggrandizement of Prussia, attempted to detach Italy from the Prussian alliance by persuading Austria to a cession of Venetia. The negotiations broke down on the refusal of Italy to throw over her ally, and Napoleon's proposal of a European congress, to reconsider the whole settlement under the treaties of 1815, proved equally abortive. Meanwhile the preparations for war had been continued, and on the 1st of June Austria flung down the gage by declaring her intention of submitting the whole question of the duchies to the federal diet and of summoning a meeting of the Holstein estates. This was denounced by Bismarck in a circular note to the powers as a breach of the convention of Gastein and of the treaty of January 16, 1864, by which Austria and Prussia had agreed to govern the duchies in common. At the same time he handed in the formal protest of Prussia to the federal diet. Prussia, he said, would only recognize the right of a reformed federal power to settle the Schleswig-Holstein question, and this power must be based on a German parliament, which alone could guarantee Prussia that any sacrifices she might make would be for the good of Germany and not of the dynasties. The Prussian plan of reform laid before the diet included the exclusion of Austria from the Confederation; the creation of a federal navy; the division of the supreme command of the army between Prussia and Bavaria; a parliament elected by manhood suffrage; the regulation of the relations between the Confederation and Austria by a special treaty. In the event of the actual constitution of the Bund being shattered by war, the German states were asked whether they would be prepared to join this new organization. On the 9th of June Prussian troops had already marched into Holstein, the Austrians, with Duke Frederick, falling back on Altona. On the 14th the Prussian scheme of reform was laid before the diet, together with Austria's counter-proposal for a decree of federal