On my return I met the Chevalier Luzerne towards evening within about 15 miles of West Point (on his way to join the Count at Rhode Island), which I intended to reach that night, but he insisted upon turning back with me to the next public house; where, in politeness to him, I could not but stay all night, determining, however, to get to West Point to breakfast very early.  I sent off my baggage, and desired Colonel Hamilton to go forward and inform General Arnold that I would breakfast with him.  Soon after he arrived at Arnold’s quarters, a letter was delivered to Arnold which threw him into the greatest confusion.  He told Colonel Hamilton that something required his immediate attendance at the garrison which was on the opposite side of the river to his quarters; and immediately ordered a horse, to take him to the river; and the barge, which he kept to cross, to be ready; and desired Major Franks, his Aid, to inform me when I should arrive, that he was gone over the river and would return immediately.  When I got to his quarters and did not find him there, I desired Major Franks to order me some breakfast; and as I intended to visit the fortifications I would see General Arnold there.  After I had breakfasted, I went over the river, and inquiring for Arnold, the commanding officer told me that he had not been there.  I likewise inquired at the several redoubts, but no one could give me any information where he was.  The impropriety of his conduct when he knew I was to be there, struck me very forcibly, and my mind misgave me; but I had not the least idea of the real cause.  When I returned to Arnold’s quarters about two hours after, and told Colonel Hamilton that I had not seen him, he gave me a packet which had just arrived for me from Col.  Jemmison, which immediately brought the matter to light.  I ordered Colonel Hamilton to mount his horse and proceed with the greatest despatch to a post on the river about eight miles below, in order to stop the barge if she had not passed; but it was too late.  It seems that the letter which Arnold received which threw him in such confusion was from Col.  Jemmison, informing him that Andre was taken and that the papers found upon him were in his possession.  Col.  Jemmison, when Andre was taken with these papers, could not believe that Arnold was a traitor, but rather thought it was an imposition of the British in order to destroy our confidence in Arnold.  He, however, immediately on their being taken, despatched an express after me, ordering him to ride night and day till he came up with me.  The express went the lower road, which was the road by which I had gone to Connecticut, expecting that I would return by the same route, and that he would meet me; but before he had proceeded far, he was informed that I was returning by the upper road.  He then cut across the country and followed in my track till I arrived at West Point.  He arrived about two hours after, and brought the above packet.  When Arnold got down to the barge, he ordered his men,