24. Corresponding thicknesses of metal.
25. Résumé of the results obtained.
Third Section.—Profile of the Piece.
26. Inclosing curve, resulting from the calculations of the second .
27. Modification rendered necessary by the form of the posterior part of the projectile.
28. Utility of the chamber and its dimensions.
29. Tracing of the chamber and of its junction with the bore.
30. Thickness of metal around the chamber.
31. Chase and reinforce.
32. Determination of the angle of sight.