A result of the introduction of the wheel-lock was the invention of pistols, which never carry match-locks. The name may have been derived from Pistoia in Tuscany, or, as it has been suggested, from the name of the coin pistole, referring to the bore. There is a word in Italian _pistolese_, but it signifies a knife. Fig. 40 is a good example of an early pistol. It is of the class used by the Reiters, German cavalry, the first body of troops armed with pistols. The barrels at this time are of great thickness, owing to the dread of bursting, and the stocks sloped abruptly, being terminated by a ball butt. This was probably to act as a counterpoise, and also to facilitate drawing the piece from the holster. It would be more efficient, too, when used as a club, as it very frequently was, according to pictures of the time. In early engravings of the Reiter he is armed not only with a pair, but on occasion with four of these pistols, two in the holsters and two fastened to his belt by hasps (Fig. 40 is furnished with a hook or hasp on the reverse side). The Reiter also had a sword. The introduction of the pistol altered the tactics of war; the bodies of horse no longer charged home, but galloped up by ranks, within a few paces of the enemy, discharged their pistols, and then wheeled outward by half troops towards each flank, leaving the front clear for the succeeding rank to take their place. They then reloaded and re-formed ready for another advance. Many of the earlier pistols were wholly of steel. The smaller pistols had a flat butt, cut slanting, and were called Dags. In course of time the barrels were made longer and thinner, the stocks became more straight, and the ball butt elongated, and finally disappeared. The wheel-lock was used for pistols up to 1650. Crusoe, in the Instructions for the Cavallerie, 1632, gives some fifteen motions for the "firing Exercise" of the wheel pistol. The Queen possesses a double-barrelled wheel rifle, in which one barrel was placed vertically over the other, dated 1588. It is fired by means of two wheel-locks on one plate, in one of which the works are outside, and the other has them hidden by the plate, the stock is of dark wood, and the fittings of the locks are of chased and gilt metal. Its double barrel, date of the rifling, and the fact of its having a steel ramrod, all make it remarkable. The Dresden arms are on the heel plate, a cypher HF on the stock, and the barrel has a bear as armourer's mark. The wheel-lock was rarely used for infantry arms, but was of necessity employed by cavalry, where the match was inconvenient. The next form of lock was the _Snap-hance_, evolved from the wheel-lock by converting the pyrites holder into a fire-steel, and replacing the wheel by a hammer, acted on by a spring and affixed to the opposite side of the pan. The pan and cover remained the same, and the latter slid back as the hammer fell on the steel, leaving the powder bare for the sparks to fall on.