The destruction of our fleet had naturally not been anticipated in the original defence scheme; and the idea of mounting naval guns on shore to supplement the land armament only took shape after the _Cesarevitch_, _Retvisan_, and _Pallada_ were damaged on the night of February 8, 1904, and thus condemned to a prolonged inactivity. The first proposal was to mount four of the _Retvisan's_ 6-inch Canet guns on Liao-tieh-shan, where, since the middle of March, two 6-inch (68 cwt.) fortress guns had been in position. The arming of this hill had been shown to be necessary when the enemy's ships from behind it shelled Tiger's Tail Peninsula, and our ships in the western basin on March 10, 22, 23, and April 15. After these guns had been mounted and high-angle fire from our ships in the western basin had been started, the enemy's fleet ceased this bombardment. The armament of the Fortress was naturally much strengthened by the addition of these guns. Their allotment to batteries was decided by circumstances. The 6-inch and 120-millimetre guns, being powerful and having long range, were placed on those points whence they could best attack the enemy's siege guns. The 47-millimetre, 37-millimetre, and other smaller guns, were placed in the first line in the intermediate works and in the trenches between them, principally with a view to repelling assaults. Except the 2-1/2-inch Baranovsky, these guns only had common shell, but their accuracy, rapidity of fire, and the abundance of stores for them, made them suitable for this purpose. The 75-millimetre guns were told off to the first and second lines as auxiliary armament against the enemy's nearest siege and field batteries. This system of allotment of naval guns was not very strictly adhered to, for it was felt that they were only lent temporarily, and would have to be returned directly the ships' repairs were completed. For this reason, and owing to the anxiety to mount them as quickly as possible on account of the enemy's rapid advance, the 6-inch Canet guns were mounted on separate batteries, newly built for them, and on such of the forts and positions as were completed. It was not sound; and later, when the Japanese began to pound the forts containing these guns, they were at once silenced, and it was very difficult to remove and replace them. It was in some cases impossible owing to the destruction done by the enemy's fire--for instance, when the bridges over the ditches were damaged.