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NEW YORK, September 3. — The Herald's Washington special, of the 2d inst., says there is great rejoicing in Washington this morning over the news of Atlanta being in our possession. It appears that while the rebel cavalry were operating upon Sherman's rear, that officer prosecuted his movements successfully, and at 11 o'clock this morning, entered the city of Atlanta, and found that his combinations had compelled its evacuation by Hood.
The transmission of this intelligence over the wires, which have been cut for several days, proves that Rosseau has been successful in his effort to dislodge the cavalry expedition of Forrest, Wheeler and Morgan, and driven them from the road.
The capture of Atlanta secures the possession of the whole state of Georgia, and renders the condition of the rebel leaders more desperate than ever before. It was by an apparent retreat of one of those masterly, strategic movements, for which this general has been so noted, that he has been enabled to achieve so brilliant a result.
It is now well known that Hood has added materially to his strength by the conscription of numerous boys and old men, who behind the works could render very good service, but outside of the works this strength would prove a great weakness and a terrible cost of powder and provender.
The purpose of Sherman in the movement which began on the night of the 26th, was to deprive the rebel commander of this strength and his protection of Atlanta in other parts.
Sherman hoped by flanking Atlanta and cutting off his supplies to force Hood out to fight, and thus with his largely preponderating force of veteran troops, to meet him in an open field. With this view, Sherman moved on the night in question, with twenty days' rations and all his army except the 20th corps, Slocum's, which had been withdrawn from the front of Atlanta to Chattahoochie Bridge, there to remain as a corps of observation, and to occupy Atlanta in the event of Hood abandoning it. They were also employed to look after communications and hurry forward by railroad supplies to whatever new position Sherman might assume.
The army is reported to have moved in the following order: 23d corps, Schofield's, in advance, followed by the 14th, Davis', 15th, Logan's, 16th, Ransom's, 17th, Blair's, and 4th, Stanley's, in the order named, all making flank movements with strong skirmish lines on either flank, and front and rear. East Point was left at the east, and at dawn Hood found Sherman gone.