Y.) for Hartford (Conn.), to hold a conference with Count Rochambeau (the commander-in-chief of the French allies, lately arrived), Arnold wrote to Andre on the 15th, agreeing to send a person to meet him at Dobbs Ferry on the 20th, and to conduct hini to a place of safety where he could confer with him. ()u the 17th Arnold and his aide-de-camp, Colonel Richard Varick, came to Peekskill, went to Stony Point, there met Washington, Marquis de Lafayette, and Alexander Hamilton, conducted them in Arnold's barge across the river to Verplanck's Point, and accompanied them on horseback as far as Peekskill, where they passed the night at the Birdsall house, and the next morning parted never to meet again. Washington and his suite proceeded up the Crompond Road, en route to Hartford by way of Crompond, Salem, Ridgebury, and Danbury. Arnold and his aide returned to his headquarters at the Robin son house. On the 20th Andre left New York, went by land to Dobbs Ferry, and in the evening at seven o'clock' went on board the British ship of war " Vulture," which had lain some days a little above Teller's (Croton) Point in Haverstraw Ray. Early on the1 morning of September 20, two residents of Cortlandtown, Moses Sherwood and John Peterson (a colored man, and a soldier of Van Cortlandt's regiment of Westchester militia), who were engaged in making cider at Barrett's farm (now of the John W. Frost estate!, Croton, saw a barge tilled with men from the "Vulture" approaching the shore. They seized their gnus, which they had taken with them to their work, ran to the river, concealed themselves behind some rocks, and as the barge approached Peterson tired, and great confusion ensued. A second shot from Sherwood compelled the barge to return to the " Vulture." The British returned the fire, with no effect except to alarm the neighborhood.