Meanwhile Brunswick's columns were making steady, methodical progress through the hills of Lorraine, through the frontier belt of fortresses. The French armies in their front were weak in numbers, even weaker in leadership. La Fayette, who had attempted to reaffirm the constitution on hearing of the event of the 10th of August, deemed it prudent to ride over the frontier when commissioners of the assembly reached his camp; he was seized as a prisoner by the allies to remain their captive for many years. On the 20th the Prussian guns opened on Longwy; on the 23rd it surrendered. On the 30th the siege of Verdun was begun, Verdun which Louis had so nearly reached the year before. It was generally known that the fortress could not stand more than a few days. Between it and Paris there was only the Argonne, a few miles of hilly passes, and then 100 miles of open country. The steady advance of Brunswick drove Paris into a state approaching delirium. On the news of the fall of Longwy reaching the city, the extremists, their appetites whetted by {150} the butchery of the Swiss, began to plot a massacre of the political prisoners, of the royalists, of the suspect. On the 28th of August Danton, riding on the wings of the storm, asked power from the Commune to carry out domiciliary visits for the purpose of arresting suspects. This power was granted, and in three days the prisons were filled to overflowing, priests and persons of title being specially singled out for arrest. By the 1st of September Paris was ready to answer the Duke of Brunswick, was ready for the stroke that was to destroy the anti-revolutionists, that was to strike terror to the hearts of all enemies of the people. But the awfulness of the deed delayed its execution. The day passed in high-wrought excitement; at any moment news might arrive of the fall of Verdun,--that might be the signal for the explosion of the popular fury. On the 2d there was still no news of Verdun, but the moment could not be delayed much longer. In the night preparations had been made. Men to do the business of popular execution had been approached; some had been offered pay. The leaders were determined to carry through their enterprise. In the assembly Danton thundered from the tribune: {151} "Verdun has not yet surrendered. One part of the people will march to the frontier, another will throw up intrenchments, and the rest will defend our cities with pikes. Paris will second these great efforts. The assembly will become a war committee. We demand that whoever refuses to serve shall be punished by death. The tocsin you will hear presently is not a signal of alarm; it is ringing the charge against the enemies of our country. To conquer them we must be audacious, yet more audacious, and still more audacious, and France is saved."