On the night of 29th August Alexander himself entered Zutphen for the purpose of encouraging the garrison by promise of-relief, and of ascertaining the position of the enemy by personal observation. His presence as it always did, inspired the soldiers with enthusiasm, so that they could with difficulty be restrained from rushing forth to assault the besiegers. In regard to the enemy he found that Gibbet Hill was still occupied by Sir John Norris, "the best soldier, in his opinion, that they had," who had entrenched himself very strongly, and was supposed to have thirty-five hundred men under his command. His position seemed quite impregnable. The rest of the English were on the other side of the river, and Alexander observed, with satisfaction, that they had abandoned a small redoubt, near the leper-house, outside the Loor-Gate, through which the reinforcements must enter the city. The Prince determined to profit by this mistake, and to seize the opportunity thus afforded of sending those much needed supplies. During the night the enemy were found to be throwing up works "most furiously," and skirmishing parties were sent out of the town to annoy them. In the darkness nothing of consequence was effected, but a Scotch officer was captured, who informed the Spanish commander that the enemy was fifteen thousand strong--a number which was nearly double that of Leicester's actual force. In the morning Alexander returned to his camp at Borkelo--leaving Tassis in command of the Veluwe Forts, and Verdugo in the city itself--and he at once made rapid work in collecting victuals. He had soon wheat and other supplies in readiness, sufficient to feed four thousand mouths for three months, and these he determined to send into the city immediately, and at every hazard.