colonial shipping at the time. The expedition began its departure from Cambridge on September 11, marching to Newburyport. The first units to leave were composed largely of men from that area, to whom Arnold had given extra time so that they would be able to see their families once more before the expedition left Newburyport. The last troops marched off on September 13; Arnold rode from Cambridge to Newburyport on September 15 after making final purchases of supplies. Headwinds and fog delayed the departure of the expedition from Newburyport until September 19. In twelve hours, they reached the mouth of the Kennebec River. They spent the next two days negotiating the island channels near its mouth and sailing up the river. Arriving in Gardinerston on the 22nd, they spent the next few days at Reuben Colburn's house, organizing supplies and preparing the boats they would use for the rest of the expedition. Arnold inspected Colburn's hastily constructed bateaux, finding them, in a portent of troubles to come, to be "very badly built", and "smaller than the directions given". Colburn and his crew spent the next three days building additional bateaux. Arnold's troop movements did not escape British notice. General Thomas Gage in Boston was aware that Arnold's troops were "gone to Canada and by way of Newburyport", but he believed the target to be Nova Scotia, which was at the time virtually undefended. Francis Legge, the governor of Nova Scotia declared martial law, and on October 17 sent a message to England laden with rumors about American actions that turned out to be false. Admiral Samuel Graves eventually received intelligence about Arnold's activities, reporting on October 18 that the American troops "went up the Kennebec River, and 'tis generally believed are for Quebec". Scouting As the troop transports arrived, Arnold dispatched some of the men in the already-constructed bateaux up the Kennebec River to Fort Western, and the others by foot on a track leading to Fort Halifax, up the Kennebec. While waiting for the bateaux to be completed, Arnold received word from scouts Colburn had sent out to reconnoiter the proposed route. Their reports included rumors of a large Mohawk force near the southernmost French settlements on the Chaudière River. The source of these rumors was Natanis, a Norridgewock Indian believed to be spying for Quebec's governor, General Guy Carleton; Arnold discounted the reports. Arnold and most of the