Such a course could only knit men of all parties together in a common resentment; and the effect of these revolutionary efforts on the friends of the Revolution was seen in a declaration which they wrested from Fox, that at such a moment even the discussion of parliamentary reform was inexpedient. A far worse result was the new strength they gave to its foes. Burke was still working hard in writings whose extravagance of style was forgotten in their intensity of feeling to spread alarm throughout Europe. He had from the first encouraged the emigrant princes to take arms, and sent his son to join them at Coblentz. "Be alarmists," he wrote to them; "diffuse terror!" But the royalist terror which he sowed would have been of little moment had it not roused a revolutionary terror in France itself. At the threat of war against the Emperor the two German Courts had drawn together, and reluctantly abandoning all hope of peace with France, gathered eighty thousand men under the Duke of Brunswick, and advanced slowly in August 1792 on the Meuse. France, though she had forced on the struggle, was really almost defenceless; her forces in Belgium broke at the first shock of arms into shameful rout; and the panic, as it spread from the soldiery to the nation at large, took violent and horrible forms. At the first news of Brunswick's advance the mob of Paris broke into the Tuileries on the 10th of August; and at its demand Lewis, who had taken refuge in the Assembly, was suspended from his office and imprisoned in the Temple. In the following September, while General Dumouriez by boldness and adroit negotiations was arresting the progress of the Allies in the defiles of the Argonne, bodies of paid murderers butchered the royalist prisoners who crowded the gaols of Paris, with a view of influencing the elections to a new Convention which met to proclaim the abolition of royalty. The retreat of the Prussian army, whose numbers had been reduced by disease till an advance on Paris became impossible, and a brilliant victory won by Dumouriez at Jemappes which laid the Netherlands at his feet, turned the panic of the French into a wild self-confidence. In November the Convention decreed that France offered the aid of her soldiers to all nations who would strive for freedom. "All governments are our enemies," cried its President; "all peoples are our allies." In the teeth of treaties signed only two years before, and of the stipulation made by England when it pledged itself to neutrality, the French Government resolved to attack Holland, and ordered its generals to enforce by arms the opening of the Scheldt. [Sidenote: France declares war with England.]