War, though still postponed, was now certain; and with this certainty the desire of the Italians for the Prussian alliance, now recommended by Napoleon, revived. By the 16th of March 1866 the Austrian war preparations were so far advanced that Count Mensdorff thought it safe to send an ultimatum to Prussia and, at the same time, a circular note to the princes declaring that, in the event of an evasive reply, Austria would move in the diet for the mobilization of the federal forces. On the 24th Bismarck in his turn issued a circular note stating that, in view of the Austrian war preparations, Prussia must take measures for her defence; at the same time he laid before the princes the outline of the Prussian scheme for the reform of the Confederation, a scheme which included a national parliament to be elected by universal suffrage, "as offering surer guarantees for conservative action than limitations that seek to determine the majority beforehand." Clearly Prussia meant war, and the Italian government thought it safe to sign, on the 8th of April 1866, a treaty of alliance. By this instrument it was agreed that in the event of her proposals for the reform of the federal constitution being rejected by the German princes, Prussia should declare war "in order to give effect to her proposals," and that, in that case, Italy would also declare war against Austria. As a result of the war Venetia was to be added to Italy and an equivalent amount of territory in North Germany to Prussia. The agreement, however, was only to hold good if war broke out within three months. Prussian scheme for the reform of the "Bund." Prussia withdraws from the "Bund."