It was the opinion of Sir John Burgoyne and the engineers that the proper point of attack was the Malakoff. On the ridge leading down to this work was a remarkable mound, first called Gordon's Hill, but afterwards known as the Mamelon. It afforded a good site for batteries directed against the Malakoff, and as the hill on which this work was placed commanded the city and the anchorage, Sir John wished to make this the principal point of attack, and direct the main efforts of the besiegers to its mastery; while the French held the enemy in check on their side, and a battery west of the Woronzoff ravine--that is, our left attack--kept down the fire of the Redan. But the French engineer, General Bizot, did not agree with Sir John Burgoyne. In his opinion, the Flagstaff Battery, a bold salient work on the west of the South Bay, was the key of the position. Sir John desired to employ our 3rd Division against the Malakoff, but the French objected, and it could not be done. Wherefore, the imperfect plan of attack which we have indicated was resolved upon. The landing of the siege train occupied eight days, and on the 16th of October, 41 pieces of ordnance, including five 10-inch mortars, had been mounted in batteries on the left attack, and 32 pieces of ordnance, including five 10-inch mortars, had been mounted on the right attack. The guns and mortars in these batteries were to direct a cross fire on the Malakoff, the Redan, and the Barrack batteries, or to search the flank of the Flagstaff on one side, and the men-of-war in the Careening creek on the other. Thus in less than a week the British had put these 73 guns into position; but in the meantime Todleben had shown such amazing industry and skill, that he had brought no less than 107 guns to bear upon the British attack alone, 82 of which were heavy siege guns, and 130 against the French. The garrison was augmented daily; first by Menschikoff's army, then by troops from Taman and Kertch, then by battalions from Odessa; so that in a few days there were in Sebastopol no fewer than 23,000 soldiers, and 12,000 sailors armed and drilled as soldiers; and about the heights of Mackenzie's Farm and Inkermann, a corps of observation, numbering 25,000 men, giving a total of 60,000 men, a force equal to that of the Allies.