BERLIN, _April 26_. It is long since the Linden Avenue witnessed such a scene of crowding and excitement as it presented to-day, when the Emperor (who wore the drill uniform of his Silesian Bodyguard Cuirassiers, named of the Great Elector), drove from the Schloss to the Central Station to take train for Thorn. His Majesty was accompanied by the Empress, who looked very sad, where her august husband only wore a serious mien. The fine sunny weather, balmy already with the fragrance of the budding spring, had lured thousands and thousands into the streets to see the away-going of the Emperor on his first campaign; and it was only with great difficulty that the demi-squadron of cavalry (Gardes du Corps) escorting the Imperial victoria could advance through the packed and cheering masses of people who thronged every inch of standing-space in Unter den Linden, and reached up to the very house-tops. At one point of its route, just opposite Café Bauer, the Emperor’s carriage was even brought to a stop; and it was then that a very excited gentleman (who turned out to be an American admirer of His Majesty) profited by the opportunity to throw a laurel wreath into the Imperial equipage. Quick as thought, the Emperor placed the wreath on the point of his sword-scabbard and tossed it back to his adulator, saying with a smile, ‘Wait a little, my friend; let us earn this first’—a sally that was the signal for a perfect storm of cheers on the part of the witnesses of this charming incident, which furnished them with additional reason for lauding the Emperor’s modesty and good sense. There was much cheering, hat-waving and fluttering of handkerchiefs as their Imperial Majesties—who never ceased bowing their acknowledgments—threaded their way to the station, on the platform of which was assembled Headquarter-Staff, with the great Household officers and Ministers of State (who looked very grave indeed), and others whom duty or curiosity had brought to see the Emperor off. After conversing for a few minutes with Count Caprivi (who, unlike his predecessor in office, is not to go to the front in the meantime, pending the development of French schemes), His Majesty turned to his sad-eyed consort, whom he embraced with great warmth, and then entered his travelling saloon carriage. In another moment, amid three parting ‘hochs,’ the train had glided away, carrying with it the first German Emperor who has unsheathed his sword against the Czar of all the Russias. ILL-TREATMENT OF A WAR-CORRESPONDENT BY THE GERMAN HUSSARS. THE BIVOUAC AT THORN. SIGNIFICANT REMARK OF THE EMPEROR. (_By Post from our Special Correspondent, Mr. Charles Lowe._) THORN, _April 27_.