the Russians at every point, and Gortschakoff in despair evacuated the Principalities. The object of the campaign was won. [Illustration: ZOUAVES LOOTING A VILLAGE IN THE CRIMEA. (_See p_. 40.)] The causes which led to this failure of the Russian arms were, first, the shining valour and noble resolution of the Turkish soldiers, and, next, the arrival of the Allies at Varna, the operations of their fleets in the Black Sea, and the new position taken up by Austria. For Austria, eager for the evacuation of the Principalities, had, on the 14th of June, while yet the issue of the siege of Silistria was uncertain, made a separate treaty with the Porte, whereby the Emperor engaged "to exhaust all the means of negotiation, and all other means, to obtain the evacuation of the Principalities" by the foreign army which occupied them. In other words, Austria undertook to occupy the Principalities herself--an engagement which, if the Russians did not withdraw, rendered it incumbent on Austria to use force for their expulsion. It is easy to see that, unless the Czar was ready to incur the hazards of a war with Austria, in addition to a war with the Allies, this pressure put upon him, coming at the back of a defeat before Silistria, and the gathering strength of Britain and France ashore and afloat, would compel him to yield up the material guarantee which he had so recklessly seized. And it did so. But now we must glance at the incidents which preceded it in the Black Sea, and on the shores of the Bosphorus and the Hellespont.