When he left New York, he was positively instructed by Sir Henry Clinton not to change his dress, as proposed by General Arnold, nor to go within the American posts, nor on any account to take papers. It was his expectation, indeed, that Arnold would himself come off to the Vulture, notwithstanding his intimation about sending a third person, and that the business between them would be there transacted.
It appears, however, that Arnold had contrived a different scheme, which could not be explained in his disguised correspondence without running too great a risk, and which perhaps he did not care to explain. His particular reasons can only be conjectured. Probably he had no other end in view than his own safety. However this may be, it was his design to induce André to cross the river, and hold the interview on the western side near the American lines, if not within them.
Preparations for executing this scheme had already been ingeniously contrived. General Howe, the immediate predecessor of Arnold as commandant at West Point, had been in the habit of employing Joshua H. Smith to procure intelligence from New York. Mr. Smith's respectable standing in society, the zeal he had shown in the American cause, his extensive acquaintance with people in different ranks of life, and the place of his residence on the confines of the American posts, all conspired to render his services important. He could select agents, and embrace opportunities, not within the power of any other person. General Howe had recommended him as a gentleman in whom confidence might be placed, and whose aid would be valuable.
These hints were enough for Arnold, and his quick perception of character enabled him to discover in Smith an instrument well suited to his purpose. He began by flattering him with particular civilities, asking him to head-quarters, visiting him often at his own house, and consulting him on subjects of some moment. He continued, as General Howe had done, to solicit his agency in keeping up a chain of intelligence and watching the movements of the enemy on the river, and furnished him with a written permission to pass the guards at all times. Arnold at length told Smith, that he expected a man from New York, who would be the bearer of very important intelligence, and with whom it was essential for him to have a personal conference, but for obvious reasons the affair must be kept a profound secret; intimating at the same time, that he might want Smith's assistance in conducting the man within the lines.
Things were in this train, when Mrs. Arnold with her infant child came from Philadelphia to join her husband at West Point. On account of the heat of the weather, and the fatigue of the journey, she travelled by short stages each day, in her own carriage, and it was previously agreed that she should pass the last night at the house of Mr. Smith. Here Arnold met her, and she went up the river with him in his barge to head-quarters only two days before General Washington commenced his tour to Hartford.
Arnold having resolved, that André should be brought on shore from the Vulture, it became necessary to provide a place for concealing him, in case the length of time required to finish the business in hand, or any accident, should prevent his prompt and safe return. While on this visit he persuaded Smith to permit the rendezvous to be held at his house. To prepare the way, all the persons residing in the house except the domestics, were to be removed. Under pretence of paying a visit to his connexions in Fishkill, more than thirty miles distant, Smith went with his wife and family the next day to that town. Leaving his family at Fishkill he immediately returned, and, as Robinson's house was near the road, he called on General Arnold according to his previous request.
Here it was arranged, that Smith should go on board the Vulture, or down to Dobbs's Ferry, in the night of the next day, and bring on shore the person, who was expected to be there. Orders had been given to Major Kierse, the quartermaster at Stony Point, to supply Smith with a boat whenever he should want one, and Arnold took care to give him the customary pass for a flag of truce, and such letters as would be understood on board the Vulture. With these papers Smith went back to his own house the same evening.
For some reason, which cannot now be explained, he did not go on board the next night, as was at first intended. It is probable, that he was disappointed in his attempt to procure a boat, and also to find boatmen who were willing to accompany him. Samuel Colquhoun, one of his tenants, to whom he applied for the purpose in the course of the day, refused to go with him, alleging a fear of being taken up by the guard-boats. Thus defeated in his object, he hastened to inform General Arnold as soon as possible, and sent Colquhoun as an express, who rode all night and got to Robinson's House just before sunrise. The General was not up, but the messenger sent in the letter he had brought from Smith, and was told that no answer was required, and he might go back as quick as he could. In the early part of the day Arnold himself went down the river to Verplanck's Point, and thence to Smith's House.
Let us now return to the Vulture. André had remained on board all night anxiously expecting to meet General Arnold there, according to the tenor of his letter. He was greatly disappointed that no person appeared, and he wrote the next morning to Sir Henry Clinton in somewhat of a desponding tone, saying that this was the second excursion he had made without any ostensible reason, and a third would infallibly fix suspicions. He thought it best, therefore, to stay where he was for a short time at least, under pretence of sickness, and try further expedients. It was also in his opinion possible, that Arnold, uninformed of his having come up to the vessel, might have sought to meet him at Dobbs's Ferry as first proposed.
An opportunity presented itself by which he was enabled to communicate the knowledge of his being on board. During the day of his arrival a flag of truce had been exhibited at Teller's Point, inviting, as it was supposed, a pacific intercourse for some object with the ship. The captain sent off a boat with another flag, but as soon as it approached the shore it was fired upon by several armed men hitherto concealed. This treacherous violation of the laws of war was deemed a proper subject for a remonstrance, and a sufficient reason for an open transmission of a flag with a letter to the American commanding officer. Such a despatch was indited and signed by Captain Sutherland, but it was in the handwriting of André, and countersigned John Anderson as secretary. The letter was dated on the morning of the 21st of September.