Filling and ramming the cases.
Filling and ramming the cases.—In this part of the operation, we must be as careful as in any of the past; for if any inequality exist in the density of the composition, produced by inattention to the ramming, the Rockets will not rise with an uniform motion, nor ascend to their proper height; but on the contrary, will observe a very erratic motion, and be deflected by every renitent particle they may meet with in their course.