Eleven rounds with effect, thus:
| From | 1500 to 650 yards, | 3' 32" | —spherical case, | 7 |
| “ | 650 to 350 “ | 0' 48" | —solid shot, | 2 |
| “ | 350 to close quarters, | 0' 34" | —canister, | 2 |
48]
37. What number of rounds could a battery fire against infantry, supposing them to pass over 1500 yards in about 16¼ minutes?
Thirty-six rounds with effect, viz:
| From | 1500 to 650 | quick step, | 9' 45" | —spher. case, | 19 | ||
| “ | 650 to 350, | “ | 3' 50 | —solid shot, | 7 | ||
| “ | 350 to 100, | “ | 2' 30" | —canister, | 8 | ||
| “ | 100 to close quarters |  | double quick and the charge. |  | 0' 40" | —can. | 2 |
38. Should the enemy attempt to force the passage of a river, what is the best position for artillery to oppose it?
Wherever the best cross fire can be obtained in order to obstruct and harass him as much as possible, and if he has succeeded in passing over any portion of his troops, it should be directed against their formation.
39. When the enemy is making the passage of a river in retreat, where should your guns be posted?
In such a position as to bear upon the batteries that cover the retreat, and also upon his bridges.