And go they did to Madame Martin, Henri's aunt, who lived in a street between the Champs Elysees and the Avenue de l'Alma, not far from the famous arch of triumph that is the centre of Paris. At the station in St. Denis, where they went from the school, they found activity enough to make up, and more than make up, for the silence and stillness everywhere else. The station was choked with soldiers, reservists preparing to report on the next day, the first of actual mobilization. Women were there, mothers, wives, sweethearts, to bid good-bye to these young Frenchmen they might never see again because of war. And there was no room on the trains to Paris for any save soldiers. The gates of the station were barred to all others, and Frank and Harry went back to the school. "I know what we can do, of course," said Harry. "It isn't very far. We'll leave our bags here at the school, and make packs of the things we need. And then we'll ride in on our bicycles. We were stupid not to think of that before." That plan they found it easy to put into execution. They had meant to abandon their bicycles for the time being, at least, but now they realized what a mistake it would have been to do that, since with every normal activity cut off by the war, the machines were almost certain to be their only means of getting from one place to another, in the beginning at least. Mounted on their bicycles, they now found their progress easy. The roads that led into Paris were crowded, to be sure. They passed countless automobiles carrying refugees. Already the Americans were pouring out of Paris in their frantic haste to reach the coast and so take boat to England. On Saturday night automobiles were still allowed to leave Paris. Next morning there would be a different story to tell. In Paris, when they began to enter the more crowded sections, they saw the same scenes as had greeted them in St. Denis, only on a vastly larger scale. Everywhere farewells were being said. Men in uniforms were all about. Officers, as soon as they were seen, were hailed by the drivers of taxicabs, who refused even to think of carrying a civilian passenger if an officer wanted to get anywhere, or, if there were no officers, a private soldier. The streets were crowded, however, and with men. Here there were thousands, of course, not required to report at once. "When mobilization is ordered," explained Henri, "each man in France has a certain day on which he is to report at his depot. It may be the first day, the third, the fifth, the tenth. If all came at once it would mean too much confusion. As it is, everything is done quickly and in order." "It doesn't look it," was Frank's comment.