The Continental Monthly, Vol. 6, No. 1, July-December, 1864 | Page 5

for the popular misconception. A few remarks presenting some truths relative to the appropriate sphere of artillery and its powers, and stating succinctly the results which have been accomplished, may be found interesting.
Without entering into the history of artillery, it will be sufficient to state that the peculiar distinguishing excellence of modern improvements in cannon is the attainment of superior efficiency, accuracy, and mobility, with a decrease in weight of metal. A gun of any given size is now many times superior to one of the same size in use fifty or a hundred years ago. It is not so much in big guns that we excel our predecessors--for there are many specimens of old cannon of great dimensions; but by our advance in science we are able so to shape our guns and our projectiles that with less weight of material we can throw larger shot to a greater distance and with more accuracy. A long course of mathematical experiment and calculation has determined the exact pressure of a charge of powder at all points in the bore of a cannon during its combustion and evolution into gas. These experiments have proved that strength is principally required near the breech, and that a cannon need not be of so great length as was formerly supposed to be necessary. We are thus able to construct guns which can be handled, throwing balls of several hundred pounds' weight. Another splendid result of scientific investigation is the method adopted for casting such monster guns. In order that the mass of metal may be of uniform tenacity and character, it should cool equably. This has been secured by a plan for introducing a stream of water through the core of the casting, so that the metal cools both within and without simultaneously.
About the time that the Italian war commenced, the subject of rifled cannon excited much popular interest. Exaggerated expectations were formed of the changes to be produced by them in the art of warfare. Many saw in them the means of abolishing war entirely. Of what use is it, they said, to array armies against each other, if they can be destroyed at two or three miles' distance? At the commencement of our own contest there was an undue partiality for rifled ordnance. Almost every commander of a battery desired to have rifled guns. The more correct views of the thoroughly accomplished artillery officers to whom was confided the arrangement of this branch of the service, and actual experience, have dissipated the unfounded estimate of their utility for field service, and established the proper proportions in an artillery force which they should compose. It has been ascertained that fighting will never be confined to long ranges--that guns which can throw large volumes of spherical case and canister into lines only a few hundred yards distant are as necessary as ever.
The necessity for rifled cannon arose from the perfection of rifled muskets. When these arms reached such a degree of excellence that horses and gunners could be shot down at a distance of one thousand yards, the old-fashioned smooth-bore artillery was deprived of its prestige. To retrieve this disadvantage and restore the superiority of artillery over musketry in length of range, methods of rifling cannon for field service became an important study. For assailing distant lines of troops, for opening a battle, for dispersing bodies of cavalry, for shelling intrenchments, for firing over troops from hills in their rear, rifled guns are of invaluable service. But, notwithstanding troops are now universally armed with muskets of long range, no battle of importance is fought without close engagements of the lines. The alternate advances and retreats of the infantry, firing at distances of less than one hundred yards, charging with fixed bayonets and frantic shouts, will always characterize any battle fought with vigor and enthusiasm. In such conflicts, wide-mouthed smooth bores, belching their torrents of iron, must play a conspicuous part.
Another fact, which will perhaps surprise the general reader, is that the form and character of projectiles have been matters of as much difficulty, have received as much investigation, and are of as much importance, as the shape and character of the guns. In fact, rifled pieces would be comparatively ineffective except projectiles adapted to them had been invented. It was necessary that projectiles of greater weight, of less resistance to the atmosphere, and of more accuracy of flight, than the old round shot, should be introduced. To accomplish these ends several things were necessary: 1st, the projectiles should be elongated; 2d, they should have conical points; 3d, the centre of gravity should be at a proper distance in front of the centre; 4th, there should be methods of steering them so that they should always go point foremost through the whole curve of their