At a meeting of the merchants and bankers in Wall Street, it was resolved to close up business, and form volunteer companies of a hundred men each, to serve under the military. General Wetmore was one of the first to offer his services. The high-spirited citizen, William E. Dodge, was among the most prominent advocates of the measure, and soon found himself a captain under orders. The steamboat of the harbor police was busy in bringing troops and cannon from Riker's and Governor's Island, and rapidly steaming from point to point on the river, to prevent destruction around the docks. Around the arsenal cannon were placed. At the city armory, corner of White and Elm Streets, were a company of the Eighty-fourth New York Militia, and some of the Zouaves and other troops. The Sub-treasury and Custom House were defended by the Tenth National Zouaves and a hundred and fifty armed citizens. In front of the Government stores in Worth and White streets, the Invalid Corps and a company of marines patrolled, while howitzers loaded with grape and canister, stood on the corner of the street. Nearly four hundred citizens had been sworn in at police head-quarters as special policemen, and had been furnished with clubs and badges. All this time the fight was going on in every direction, while the fire-bells continually ringing increased the terror that every hour became more wide-spread. Especially was this true of the negro population. From the outset, they had felt they were to be objects of vengeance, and all day Monday and to-day those who could leave, fled into the country. They crowded the ferry-boats in every direction, fleeing for life. But old men and women, and poor families, were compelled to stay behind, and meet the fury of the mob, and to-day it became a regular hunt for them. A sight of one in the streets would call forth a halloo, as when, a fox breaks cover, and away would dash a half a dozen men in pursuit. Sometimes a whole crowd streamed after with shouts and curses, that struck deadly terror to the heart of the fugitive. If overtaken, he was pounded to death at once; if he escaped into a negro house for safety, it was set on fire, and the inmates made to share a common fate. Deeds were done and sights witnessed that one would not have dreamed of, except among savage tribes.