The Harlem and Third Avenue tracks were also torn up, as the rioters were determined to isolate the great city, which they had doomed to destruction. Passing from one object to another, now acting as if from plan, and now intent only on destruction and plunder, the crowd streamed from point to point with shouts and yells, that sent terror through the adjoining streets. Suddenly, some one remembered that they were in the vicinity of Colonel Nugent's house, in Yorkville, the assistant provost marshal general, and shouting out the news, a rush was made for it, and it was sacked from top to bottom. As the police were gathered together either at the precinct stations or head-quarters, ordinary patrol duty was out of the question; hence, many isolated, acts of violence could be committed with impunity. This freedom from close surveillance, coupled with the contagion of the lawless spirit which was abroad, made every section of the city where the lower classes lived more or less restless. It was impossible for the police to divide itself up so to furnish protection in individual cases, and yet be in sufficient force to cope with the mobs, that numbered by thousands. Although the whole city was heaving like a troubled sea, yet the main gathering this day had been in the upper part and on both sides of it. The terrific contests we described farther back were in the Second Avenue, on the east side, but, nearly opposite, in the Sixth Avenue, crowds had been gathering since early in the forenoon.