Already the Prussian and Austrian Governments had vaguely discussed the need of a joint intervention in France. In fact this subject formed one of the pretexts for the missions of the Prussian envoy, Bischoffswerder, to the Emperor Leopold in February and June 1791.[2] As was shown at the close of the former volume, "William Pitt and National Revival," neither Court took the matter seriously, the Eastern Question being then their chief concern. But the flight to Varennes, which Leopold had helped to arrange, imposed on him the duty of avenging the ensuing insults to his sister. He prepared to do so with a degree of caution highly characteristic of him. He refused to move until he knew the disposition of the Powers, especially of England. From Padua, where the news of the capture of Louis at Varennes reached him, he wrote an autograph letter to George III, dated 6th July, urging him to join in a general demand for the liberation of the King and Queen of France. He also invited the monarchs of Europe to launch a Declaration, that they regarded the cause of Louis as their own, and in the last resort to put down a usurpation of power which it behoved all Governments to repress.[3] The reply of George, dated St. James's, 23rd July, bears the imprint of the cool and cautious personality of Pitt and Grenville, who in this matter may be counted as one. The King avowed his sympathy with the French Royal Family and his interest in the present proposals, but declared that his attitude must depend on his relations to other Powers. He therefore cherished the hope that the Emperor would consult the welfare of the whole of Europe by aiding in the work of pacification between Austria and Turkey now proceeding at Sistova. So soon as those negotiations were completed, he would instruct his Ministers to consider the best means of cementing a union between the Allies and the Emperor.[4] Leopold must have gnashed his teeth on reading this reply, which beat him at his own game of _finesse_. He had used the difficulties of England as a means of escaping from the pledges plighted at the Conference of Reichenbach in July 1790. Pitt and Grenville retorted by ironically refusing all help until he fulfilled those pledges. As we have seen, they succeeded; and the pacification in the East, as also in Belgium, was the result. Equally chilling was the conduct of Pitt towards the _emigres_. The French Princes at Coblentz had sent over the former French Minister, Calonne, "to solicit from His Majesty an assurance of his neutrality in the event ... of an attempt being made by the Emperor and other Powers in support of the royal party in France." Pitt and Grenville refused to receive Calonne, and sent to the Comte d'Artois a letter expressing sympathy with the situation of the King and Queen of France, but declining to give any promise as to the line of conduct which the British Government might pursue.[5]