At the end of October the Mahdi, accompanied by a far more numerous force than Gordon thought he could raise, described by Slatin as countless, pitched his camp a few miles south of Omdurman. On 8th November his arrival was celebrated by a direct attack on the lines south of Khartoum. The rebels in their fear of the hidden mines, which was far greater than it need have been, as it was found they had been buried too deep, resorted to the artifice of driving forward cows, and by throwing rockets among them Gordon had the satisfaction of spreading confusion in their ranks, repulsing the attack, and capturing twenty of the animals. Four days later the rebels made the desperate attack on Omdurman, when, as stated, communications were cut, and the _Husseinyeh_ ran aground. In attempting to carry her off and to check the further progress of the rebels the _Ismailia_ was badly hit, and the incident was one of those only too frequent at all stages of the siege, when Gordon wrote: "Every time I hear the gun fire I have a twitch of the heart of gnawing anxiety for my penny steamers." At the very moment that these fights were in progress he wrote, 10th November: "To-day is the day I expected we should have had some one of the Expedition here;" and he also recorded that we "have enough biscuit for a month or so"--meaning at the outside six weeks. Throughout the whole of November rumours of a coming British Expedition were prevalent, but they were of the vaguest and most contradictory character. On 25th November Gordon learnt that it was still at Ambukol, 185 miles further away from Khartoum than he had expected, and his only comment under this acute disappointment was, "This is lively!"