Berlin, which has poured all its teeming million-and-a-half into the streets, is at this hour a scene of the wildest excitement, owing to a rumour (and a friend of mine in the General Staff, whom I chanced to meet, confirmed the truth of the rumour), that the awful and electrifying words ‘_Krieg, mobil!_’ had (as in 1870) been already flashed again to no fewer than seven of the twenty Army Corps constituting the Imperial host—viz., to the 1st, or East Prussian; the 17th, West Prussian; the 3d, Brandenburg; the 4th, Province of Prussian Saxony; the 5th, Posen; the 6th, Silesian; and the 12th, Kingdom of Saxony. Loud and long was the cheering in front of the Schloss—which is thronged by an ever-increasing and excited multitude—when this intelligence oozed out, and with one accord (for your Germans are a most wonderful people of trained choral-singers) the whole mighty assemblage burst forth with a battle-ballad, in which some deft patriotic poet had been quick to embody the fears and determinations of the last few days under the title of ‘_Die Weichsel-Wacht_,’ or the ‘Watch on the Vistula’—a war-song which promises to fill as large and luminous a page among the lyric gems of the Fatherland as Schneckenburger’s immortal ‘_Wacht am Rhein_.’ When the frantic cheering which followed the chanting of this stirring battle-anthem had subsided, the Emperor (who has now completely recovered from the accident to his knee) came out to bow his acknowledgments from the front balcony of the castle; and on his arm was the Empress holding the hand of the pretty little flaxen-haired Crown Prince, who had been routed out of his warm bed at this late and chilly hour to add one crowning touch of spectacular effect to the _tableau_ which, amid another frenzied outburst of ‘hochs’ and ‘hurrahs,’ thus closed the drama of a most exciting and momentous day. INTERVIEW BETWEEN GENERAL CAPRIVI AND THE FRENCH AMBASSADOR. DISPOSITION OF THE GERMAN TROOPS. (_By Telegraph from our Special Correspondent, Mr. Charles Lowe._) BERLIN, _April 23_. The excitement of the last few days has now calmed down into the serious and stolid determination, which is the most striking characteristic of the German race, and though it is known that, since the order to mobilise seven Army Corps was issued, M. Herbette, the French Ambassador, has had repeated interviews with General Caprivi, the nation is meanwhile content to suppress its suspicion with regard to the possible—nay, probable—policy of its western neighbour, and devote all its attention to the development of events on its eastern border.