The _Australian_, _Sidney_, and _Gertrude_, with the heavy artillery and siege train, came in on the 27th, and proceeded to disembark their heavy guns at a pier which was repaired by the 3rd company of Sappers. The 4th and 2nd Divisions were pushed on towards the south-west side of Sebastopol, and encamped on ridges about two miles from the city, separated from each other by a ravine, which commences near Balaklava and runs nearly to the head of the creek of Sebastopol. The city was quite visible below. Across the north of the harbour, near the most easterly of the creeks, was placed a two-decker, painted so as to look like a three-decker, with springs on her cable, and her broadside turned towards our position. On the northern side a large circular work, with three tiers of guns--Fort Constantine--was visible, and more inland there was another large fortification, called the "Star Fort." On the near side was a very large fortification, with curtains, running inland, a semi-circular bastion, and some rudimentary earthworks--all outside the town. Lord Raglan and staff rode out and made a reconnaissance. A frigate, anchored inside the two-decker, near the end of the creek, amused herself by firing round shot and shell, but did no damage. The French landed their guns at Kamiesch and Khazatchel. The cholera, which never left us, made many victims. Colonel Beckwith (1st battalion Rifles), Captain Cox (Grenadier Guards), Colonel Hoey (30th Regiment), Dr. Mackay, Lieutenant Grant (79th), the Rev. Mr. Mockler, and others, were among the number. [Sidenote: RAVAGES OF CHOLERA.] On Friday, September 29, Marshal St. Arnaud, who had been obliged to resign his command to General Canrobert on the march, was carried from his quarters in Balaklava on board the _Berthollet_ in a dying state, and expired at sea ere she reached the Bosphorus. On the 30th, all our heavy guns were parked. On the 1st of October, there was a general rest throughout the army. The enemy the whole of that day amused themselves firing shot and shell over the heads of our artillery, and General Cathcart was obliged to move his quarters, as the Russians found out his range and made beautiful practice at them. However, he left his flagstaff, which seemed of much attraction to them, in the same place, and they continued to hammer away at it as usual. The Second Division moved up on the left of our position on the 8th of October, and the Light Division took ground on the extreme right. Lieutenant-Colonel Dickson obtained the command of Captain Patton's battery of artillery, vacated by the decease of the latter-named officer by cholera.