The new military base in this vicinity was thus fairly established, and the commander-in-chief, after personally inspecting the position, urged on the work of defence. As the regiments on their arrival had been quartered at haphazard in the city, he first arranged the army into five brigades, with the view of putting them into suitable and permanent camps. To the command of these he assigned Heath, Spencer, Sullivan, Greene, and Stirling, in the order of their rank. The twenty-five battalions which made up the force at this date numbered together not quite ten thousand men. But hardly were the orders for this new arrangement issued before events required its modification. Our affairs proving to be in a bad way in the direction of Canada, it became necessary to despatch General Sullivan with six regiments to the northward, and on the 29th of April the troops in New York were formed anew into four brigades, and assigned to their respective camps. Heath's first brigade was posted on the Hudson, just without the city above the Canal Street marsh and about Richmond Hill; Spencer's second, on the East River, around the Rutgers' farm and Jones' Hill; and Stirling's fourth, in the centre, near Bayard's Hill and the Bowery Road; while Greene's third brigade was assigned to "the ground marked out upon Long Island." But one work now lay before these soldiers, namely, to put New York and its vicinity in a complete state of defence in the shortest possible time. Howe and his Boston army, it was now known, had gone to Halifax instead of sailing for New York; but he could still reach, and, with reinforcements from England, attack the city before the Americans were ready to receive him. The situation, accordingly, admitted of no delays, and digging was made the order of the day. No one could have anticipated, however, that preparations were to be continued full four months longer before active campaigning opened. This interval of fortifying is not without its interest; and we may cross, first, with Greene to Long Island, to note what further was done towards securing that "capital" point in the general system of defence. * * * * *