In the mean time the French, elated by their recent triumph, and thinking no danger at hand, relaxed their vigilance at Fort Duquesne. Stobo, who was a kind of prisoner at large there, found means to send a letter secretly by an Indian, dated July 28, and directed to the commander of the English troops. It was accompanied by a plan of the fort. "There are two hundred men here," writes he, "and two hundred expected; the rest have gone off in detachments to the amount of one thousand, besides Indians. None lodge in the fort but Contrecoeur and the guard, consisting of forty men and five officers; the rest lodge in bark cabins around the fort. The Indians have access day and night, and come and go when they please. If one hundred trusty Shawnees, Mingoes, and Delawares were picked out, they might surprise the fort, lodging themselves under the palisades by day, and at night secure the guard with their tomahawks, shut the sally-gate, and the fort is ours." One part of Stobo's letter breathes a loyal and generous spirit of self-devotion. Alluding to the danger in which he and Van Braam, his fellow-hostage, might be involved, he says, "Consider the good of the expedition without regard to us. When we engaged to serve the country it was expected we were to do it with our lives. For my part, I would die a hundred deaths to have the pleasure of possessing this fort but one day. They are so vain of their success at the Meadows it is worse than death to hear them. Haste to strike." [Footnote: Hazard's Register of Penn., iv., 329.] The Indian messenger carried the letter to Aughquick and delivered it into the hands of George Croghan. The Indian chiefs who were with him insisted upon his opening it. He did so, but on finding the tenor of it, transmitted it to the Governor of Pennsylvania. The secret information communicated by Stobo, may have been the cause of a project suddenly conceived by Governor Dinwiddie, of a detachment which, by a forced march across the mountains, might descend upon the French and take Fort Duquesne at a single blow; or, failing that, might build a rival fort in its vicinity. He accordingly wrote to Washington to march forthwith for Wills' Creek, with such companies as were complete, leaving orders with the officers to follow as soon as they should have enlisted men sufficient to make up their companies. "The season of the year," added he, "calls for despatch. I depend upon your usual diligence and spirit to encourage your people to be active on this occasion."