Meanwhile, events were assuming an alarming aspect in the western part of the city. Early in the morning men began to assemble here in separate groups, as if in accordance with a previous arrangement, and at last moved quietly north along the various avenues. Women, also, like camp followers, took the same direction in crowds. They were thus divided into separate gangs, apparently to take each avenue in their progress, and make a clean sweep. The factories and workshops were visited, and the men compelled to knock off work and join them, while the proprietors were threatened with the destruction of their property, if they made any opposition. The separate crowds were thus swelled at almost every step, and armed with sticks, and clubs, and every conceivable weapon they could lay hands on, they moved north towards some point which had evidently been selected as a place of rendezvous. This proved to be a vacant lot near Central Park, and soon the living streams began to flow into it, and a more wild, savage, and heterogeneous-looking mass could not be imagined. After a short consultation they again took up the line of march, and in two separate bodies, moved down Fifth and Sixth Avenues, until they reached Forty-sixth and Forty-seventh Streets, when they turned directly east. The number composing this first mob has been so differently estimated, that it would be impossible from reports merely, to approximate the truth. A pretty accurate idea, however, can be gained of its immense size, from a statement made by Mr. King, son of President King, of Columbia College. Struck by its magnitude, he had the curiosity to get some estimate of it by timing its progress, and he found that although it filled the broad street from curbstone to curbstone, and was moving rapidly, it took between twenty and twenty-five minutes for it to pass a single point.