At last came the crash of a window, as a stone went through it. Another and another followed, when suddenly a reinforcing crowd came rushing down Chatham Street. This was the signal for a general assault, and, with shouts, the rabble poured into the lower part of the building, and began to destroy everything within reach. Captain Warlow, of the First Precinct, No. 29 Broad Street, who, with his command, was in the gallant fight in Broadway, after some subsequent fighting and marching, had at length reached his head-quarters in Broad Street, where a despatch met him, to proceed at once to the _Tribune_ building. He immediately started off on the double-quick. On reaching the upper end of Nassau Street, he came to a halt, and gave the club signal on the pavement, to form column. Captain Thorne, of the City Hall, in the meantime, had joined his force to him, with the gallant Sergeant Devoursney. Everything being ready, the order to "Charge" was given, and the entire force, perhaps a hundred and fifty strong, fell in one solid mass on the mob, knocking men over right and left, and laying heads open at every blow. The panic-stricken crowd fled up Chatham Street, across the Park, and down Spruce and Frankfort Streets, punished terribly at every step. The space around the building being cleared, a portion of the police rushed inside, where the work of destruction was going on. The sight of the blue-coats in their midst, with their uplifted clubs, took the rioters by surprise, and they rushed frantically for the doors and windows, and escaped the best way they could. In the meantime, those who had taken refuge in the Park found themselves in the lion's jaws. Carpenter had hardly rested from his march up Fifth Avenue to Mayor Opdyke's house, when he, too, received orders to hasten to the protection of the _Tribune_ building. Taking one hundred of his own men, and one hundred under Inspector Folk, of Brooklyn, who had been early ordered over, and been doing good service in the city, he marched down Broadway, and was just entering the Park, when the frightened crowd came rushing pell-mell across it. Immediately forming "company front," he swept the Park like a storm, clearing everything before him. Order being restored, Folk returned with his force to Brooklyn, where things began to wear a threatening aspect, and Carpenter took up his station at City Hall for the night. This ended the heavy fighting of the day, though minor disturbances occurred at various points during the evening. Negroes had been hunted down all day, as though they were so many wild beasts, and one, after dark, was caught, and after being severely beaten and hanged to a tree, left suspended there till Acton sent a force to take the body down. Many had sought refuge in police-stations and elsewhere, and all were filled with terror.