Louis Napoleon’s System

—In 1850, Louis Napoleon, emperor of the French, caused a series of experiments to be made at the principal artillery schools of France to test the merits of a new system of field artillery proposed by himself. The principal idea involved in this system was, to substitute a single gun of medium weight and caliber, capable of firing shot and shells, for the 8- and 12-pounder guns, and 24- and 32-pounder howitzers, then in use. The caliber selected was the 12-pounder. The favorable results of all these experiments, and the simplicity of the system, led to the adoption of this, the Napoleon gun, as it is sometimes called, into the French service; and others of similar principle were introduced into various European services, and also into our own. As this piece unites the properties of gun and howitzer, it is called canon-obusier , or gun-howitzer. At no time since the discovery of gunpowder have such important improvements been made in fire-arms as within the past few years. These improvements may be summed up as follows, viz.: (1) Improvement in the quality of cast iron, and the consequent increase in the caliber of sea-coast cannon. In 1820, the heaviest gun mounted in the United States on sea-coast batteries was the 24-pounder; at present the heaviest is a 20-inch gun, carrying a shell weighing 1080 pounds. (2) The use of wrought and chilled iron and steel as a material for fortre carriages, and for covering ships of war. (3) The extensive introduction of shells in sea-coast defenses and naval warfare; and spherical case-shot into the field service. (4) The introduction of rifling for both small-arms and cannon. (5) The succe ful application of the breech-loading principle to cannon and small-arms of every description, and the great improvement made of late in steel, as well as the power to manipulate ma es sufficiently large for the construction of the immense cannon now employed in naval warfare and for sea-coast defense.