Our present firelock differs from the article used during the Seven Years' War only in its more careful construction and some modifications of detail. The most important of these relates to the more rapid explosion of the charge. In 1840 the old flint-locks were generally replaced by the percussion-lock, which is simpler, is less exposed to the effects of dampness, and more quickly and surely ignites the powder. Even the ordinary regulation-musket with its bayonet was spoken of by Napoleon in his time as "the best engine of warfare ever invented by man." Since the day of the Great Emperor, and even during the reign of the present Napoleon, continued improvements have been made in the character of the weapon used by the French infantry. The weight, length, correctness of aim, durability, and handiness of the gun have all been carefully examined and modified, to the advantage of the soldier, until, finally, we have a weapon which combines wonderful qualities of lightness, strength, correctness of equipoise, ease and rapidity of loading, with perfect adaptability as a combination of the lance, pike, and sword, when it has ceased to be a fire-arm. We have not here the space to enter upon a disquisition concerning these progressive changes; but suffice it to say that nearly all the peculiar styles of fire-arms were well known at an early period, and that the rifling, etc., of guns and cannon, with the other modifications now adopted, are merely the development and consummation of old ideas. For instance, the rifled arquebuse was known and used at the close of the fifteenth century, and, although the rifled musket was not put in general use by the French infantry, from the fact that its reduced length and the greater complication of movements required in loading and discharging it deprived it of other advantages when in the hands of troops of the line, still it was adopted in a certain proportion in some branches of the French service.