2. =Convenience in use.=--Besides protecting the fighting man the armourer had to remember that his patron had to ride, sometimes to walk, and always to use his arms with convenience, and at the same time had to be protected while so doing. At first the cuirass was made simply in two pieces, the back and the front fastened under the arms with straps. In the middle of the fifteenth century each of these was made in two or more pieces joined with a rivet, working loose in a slot cut in the uppermost of the plates, so that a certain amount of movement of the torse was possible. The pauldrons, which often appear unnecessarily large, almost meeting in front and, as is the case in the statue of Colleoni in Venice, crossing at the back, are so made that they would protect the armpit when the arm was raised in striking a blow (Fig. 3). The upper part of the arm-piece or rerebrace is made of overlapping lames held together by sliding rivets, which allow a certain amount of play outwards and forwards, but the defence becomes rigid if the arm is moved backwards, for this movement is not necessary in delivering a blow (see page 52). The arm and leg pieces are hinged with metal hinges on the outside of the limb and fastened with straps or hooks and staples on the inside. In most cases modern theatrical armour errs in this respect, for it is obvious that if the straps were on the outside the first object of the enemy would be to cut them and render the armour useless. The vambrace or cannon and the lower portion of the rerebrace are in single cylindrical plates, for here no movement is possible independently from the shoulder and elbow. The rerebrace, however, is generally formed with a collar which turns in a groove bossed out in the upper portion, so that the arm can turn outwards or inwards without moving the shoulder (see page 54). The cuisse and the front and back of the jamb are for the same reasons each made in one piece, joined to the knee-cop and solleret by narrow lames working loose on rivets. The cuisse only covers the top part of the thigh for convenience on horseback, and wherever a cuisse is found that protects the back of the thigh we may be sure that the owner fought on foot (Plate IX). The solleret is made so that the foot can move naturally in walking. The upper part is formed of small lames working on loose rivets and overlapping downwards towards a centre-plate which covers the tread of the foot; beyond this the toe-plates overlap upwards and thus perfect freedom of movement is obtained. [Illustration: FIG. 3. Back of Pauldrons of A. Statue of Colleoni, Venice. B. Missaglia Suit, Waffensammlung, Vienna.] [Illustration: FIG. 4. (1) The practical solleret at rest and (2) in action. (3) Unpractical solleret, late sixteenth century.]