1st. From the first investiture to the first opening of the trenches, about 5 days.
2d. From the opening of the trenches to the effecting a lodgement on the glacis, about 18 days.
3d. From this time to the capitulation, about 5 days.
First Period. Three guns on the barbette of each bastion and on the barbettes of the ravelins in front of the gateways, half 24 Prs. and half 18 Prs.[4] three 9 Prs. on the barbette of each of the other ravelins.
Twelve 12 Prs. and twelve 4 Prs. in reserve.
One 13 inch mortar in each bastion.
Six of 8 inch in the salient angles of the covert way.
Do. in reserve.
Ten stone mortars.
The 12 Prs. in reserve, are to be ranged behind the curtain, on whichever side they may be required, and the 4 Prs. in the outworks; all to fire en ricochet over the parapet. By this arrangement, the whole of the barbette guns are ready to act in any direction, till the side of attack is determined on; and with the addition of the reserve, 49 pieces may be opened upon the enemy the very first night they begin to work upon the trenches.