7. What is the weight of a howitzer of each kind?

10-inch, 9,500 lbs.; 8-inch sea-coast, 5,740 lbs.; 8-inch siege and garrison, 2,614 lbs.; 24-pdr. garrison, 1,476 lbs.; 32-pdr. field, 1,920 lbs.; 24-pdr. field, 1,318 lbs.; 12-pdr. field, 788 lbs.; 12 pdr. mountain, 220 lbs.

8. What is the natural angle of sight in siege and garrison and field howitzers?

One degree.

9. What in mountain howitzers?

Thirty-seven minutes.

10. Why have sea-coast howitzers no natural line of sight?

Because the swell of the muzzle is not visible when the eye is on a level with the base ring.

30]

PART I. SECTION IV.
ON COLUMBIADS.