Steps have been taken at the American Embassy to supply credentials, in the form of "a paper of nationality," to citizens of the United States, which will make it possible for them to register as such with the police, as required by the French Government.

The proposed American Ambulance has been organized under the official patronage of Ambassador Herrick, and the auspices of the American Hospital of Paris.

Beginning to-day, all cafés and restaurants will be closed at eight in the evening. They were left open till nine yesterday as an exceptional measure, owing to the fact that there was not time to distribute the order for early closing by eight o'clock.

The aspect of the boulevards last night was the completest possible contrast to what was seen on Sunday night. The city was under martial law, and the police showed very plainly that they did not intend to be trifled with.

Instead of shouting crowds and stone-throwing by excited youths and women, one saw only a few citizens walking slowly along. One group of policemen took shelter from the intermittent showers under the marquise of the Vaudeville Theater, and other detachments were in readiness at corners all along the line of the boulevards, which were dotted with isolated policemen.

No one was allowed to loiter. To wait five minutes outside a house was to court investigation and possibly arrest. There was no sound except that of footfalls and a low murmur of conversation. It was the first night of war's stern government.

Germany officially declared war upon France at five forty-five this evening. The notification was made by Baron von Schoen, the German Ambassador to France, when he called at the Ministry of Foreign Affairs to ask for his passports.

Baron von Schoen declared that his Government had instructed him to inform the Government of the Republic that French aviators had flown over Belgium and that other French aviators had flown over Germany and dropped bombs as far as Nuremberg. He added that this constituted an act of aggression and violation of German territory.

M. Viviani listened in silence to Baron von Schoen's statement, and when the German Ambassador had finished, replied that it was absolutely false that French aviators had flown over Belgium and Germany and had dropped bombs.

Immediately after this interview, M. Viviani telegraphed to M. Jules Cambon, French Ambassador in Berlin, instructing him to immediately ask for his passports and to make a report on France's protest against the violation of the neutrality of Luxemburg and the ultimatum sent to Belgium. M. Cambon will leave Berlin to-morrow.