"Lieutenant-colonel Frothingham and Captain Revolle are of the staff of the undersigned, and will be obeyed accordingly. "HARVEY BROWN, "_Brevet Brigadier-general_." He also sent a dispatch to General Sandford, at the arsenal, notifying him of his action, and requesting him to come down and consult with him on the course to be pursued. General Sandford, after awhile, did come down, and, to General Brown's amazement, insisted that all the troops should be sent up to the arsenal. General Brown, seeing the utter madness of such a disposition of his force, refused decidedly to permit it to be done. This was of course denying Sandford's claim to be his superior officer. It was well for the city that he took this ground. Mayor Opdyke also issued a proclamation, calling on the rioters to disperse. But while these measures were being set on foot, the rioters were not idle. [Illustration: THE ATTACK ON THE TRIBUNE BUILDING.] All day long a crowd had been gathering in the Park around the City Hall, growing more restless as night came on. The railroad-cars passing it were searched, to see if any negroes were on board, while eyes glowered savagely on the _Tribune_ building. They had sought in an eating-house for the editor, to wreak their vengeance on him. Not finding him, they determined that the building, from which was issued the nefarious paper, should come down, but were evidently waiting for help to arrive before commencing the work of destruction. The mob, which Carpenter had so terribly punished in Broadway, were marching for it, designing to burn it after they had demolished police head-quarters. Their dispersion delayed the attack, and doubtless broke its force, by the reduction of numbers it caused. There seemed enough, however, if properly led, to effect their purpose, for the Park and Printing-house Square were black with men, who, as the darkness increased, grew more restless; and "Down with it! burn it!" mingled with oaths and curses, were heard on every side.