having been strained, nor of being in any way injured by the concussions to which it had been subjected. * * * * * “Subsequently, some further experiments were made with the same gun with reduced elevation, when the projectiles, striking the ground at comparatively short distances, rebounded again and again till their momentum was expended. The first shot thus fired weighed 32 pounds, the charge of powder being only 3 ounces, and the gun having an elevation of 2 degrees. The projectile made its first graze at a distance of 92 yards, furrowing the ground for about 7ft., and leaving distinct indications of its rotary axial motion. It rose again to an elevation of about 6ft., grazing, after a further flight of 64 yds. The third graze (owing probably to the hard nature of the soil at the point struck) was at a distance of 70yds. further; after which it traversed some ploughed land, grazing several times, coming finally to rest after having accomplished altogether a distance of 492yds. “The second shot also weighed 32 pounds; the charge, as before, consisted of 3 ounces of powder; but this time the elevation given to the gun was 3 degrees. The projectile first grazed the ground at a point 108yds. from the muzzle; the second graze was 126yds. further; but happening to touch the lower bar of an iron fence--a circumstance which appeared to affect its flight--it dropped finally after having accomplished 490yds. Some further experiments were then made with shot weighing 48 pounds each. “These very reduced charges rendered it necessary to make use of wooden wads to fill the cavities in the base of the projectiles. This had a tendency to reduce very much the power of the gun. “A further trial with the hexagonal gun was made at Liverpool on the 7th of May. Several shots, varying from 24 to 48 pounds in weight, were fired. The first, weighing 24 pounds, with a charge of 11 pounds of powder, attained a distance of 2,800 yards, the elevation given having been 8 degrees. These experiments could hardly be said to have exhibited the _maximum_ capacity of the gun, having been interrupted by the rapid rising of the tide. The average range of several 48-pound shots was 3,000 yards, but there is little doubt that a much greater distance will be achieved when Mr. Whitworth has perfected some guns he is now constructing.