3. Tracing of the projectile on a scale of one-fifth.
4. Tracing of the wooden bottom and of the fuse of the projectile, executed in the case of each of these objects in two figures—the one on a large scale (two-thirds, or even the size of nature,) representing the inquiry into their forms and dimensions, the other giving on a scale of one-fifth the results of this inquiry. To this is added, for the mountain howitzer, or any other howitzer for which it is admissible, a tracing of the mounted howitzer carriage.
5. The representation in drawing of the laws of the motion of the projectile, the trajectory, inclinations, remaining velocities, durations of the passage.
In addition, the scale of the elevations and that of the angles of fire, for an object of aim placed at different distances.
6. An inscription showing all the essential elements by which the projectile and the piece are distinguished.
The final tracings of the gun, the projectile, the bottom, and the fuse, must be colored in uniform tints conformably to the table of conventional colors.
As to the tracing of the profile founded upon the calculation, it should receive merely an edging of the color which represents the metal used.
[PROGRAMME OF THE MEMORANDUM ON THE DESIGN FOR ORDNANCE.]
INTRODUCTION.
Object of the work. Data of the Question.