This proportion and arrangement is however made upon a supposition, that the place has no countermines to retard the progress of the besiegers, to a period beyond what is abovementioned; but the same author estimates, that a similar place, with the covert way properly countermined beforehand, and those countermines properly disputed, may retard a siege at least 2 months; and that if the other works be likewise effectually countermined and defended, the siege may be still prolonged another month.
The above proportion is therefore to be further regulated, as the strength of the place is increased by these or any other means. These considerations should likewise be attended to, in the formation of an estimate of ammunition and stores for the siege of a fortified place. See [Carriage], [Platform], [Park], and the different natures of artillery, as [Gun,] [Mortar], [Howitzer], &c.
The small arms ammunition is estimated by this author as follows:
¼ of a pound of gunpowder, or 10 rounds per day, per man, for all the ordinary guards.
1¼ lbs. or 50 rounds per man, per 12 hours, for all extraordinary guards.
⅝ of a pound, or 25 rounds for every man on picket, during the period of his duty.
AXLETREES—See the word [Carriages].
B alls—of lead, of different natures.
| Nature. | Number to one pound. | Diameter in inches. | Number made from one ton of Lead. |
|---|---|---|---|
| Wall pieces | 6¾ | .89 | 14,760 |
| Musquets | 14½ | .68 | 32,480 |
| Carbine | 20 | .60 | 44,800 |
| Pistol | 34 | .51 | 78,048 |
| 7 Barrel guns | 46½ | .46 | 104,160 |