Such, for a term of many months, had been the trying and painful duty that had devolved on the governor of Detroit; when, in the summer of 1763, the whole of the western tribes of Indians, as if actuated by one common impulse, suddenly threw off the mask, and commenced a series of the most savage trespasses upon the English settlers in the vicinity of the several garrisons, who were cut off in detail, without mercy, and without reference to either age or sex. On the first alarm the weak bodies of troops, as a last measure of security, shut themselves up in their respective forts, where they were as incapable of rendering assistance to others as of receiving it themselves. In this emergency the prudence and forethought of the governor of Detroit were eminently conspicuous; for, having long foreseen the possibility of such a crisis, he had caused a plentiful supply of all that was necessary to the subsistence and defence of the garrison to be provided at an earlier period, so that, if foiled in their attempts at stratagem, there was little chance that the Indians would speedily reduce them by famine. To guard against the former, a vigilant watch was constantly kept by the garrison both day and night, while the sentinels, doubled in number, were constantly on the alert. Strict attention, moreover, was paid to such parts of the ramparts as were considered most assailable by a cunning and midnight enemy; and, in order to prevent any imprudence on the part of the garrison, all egress or ingress was prohibited that had not the immediate sanction of the chief. With this view the keys of the gate were given in trust to the officer of the guard; to whom, however, it was interdicted to use them unless by direct and positive order of the Governor. In addition to this precaution, the sentinels on duty at the gate had strict private instructions not to suffer any one to pass either in or out unless conducted by the governor in person; and this restriction extended even to the officer of the guard. Such being the cautious discipline established in the fort, the appearance of a stranger within its walls at the still hour of midnight could not fail to be regarded as an extraordinary event, and to excite an apprehension which could scarcely have been surpassed had a numerous and armed band of savages suddenly appeared among them. The first intimation of this fact was given by the violent ringing of an alarm bell; a rope communicating with which was suspended in the Governor's apartments, for the purpose of arousing the slumbering soldiers in any case of pressing emergency. Soon afterwards the Governor himself was seen to issue from his rooms into the open area of the parade, clad in his dressing-gown, and bearing a lamp in one hand and a naked sword in the other. His countenance was pale; and his features, violently agitated, betrayed a source of alarm which those who were familiar with his usual haughtiness of manner were ill able to comprehend.