27. To the first class belongs, almost exclusively, the first bandage invented by Petit. It is formed by a long compress, placed longitudinally behind the leg and foot, and secured by a roller applied regularly on these parts. The two ends of the compress, being reflected back, are then knotted together behind the leg so as to extend the foot. This expedient is simple and ingenious, and would be preferable to all others, were it not that, besides the charge of not fulfilling the second general indication (16), it is further liable to the following objections: 1st, the compression which it makes is injudicious and ill directed, because it bears not only on the fleshy portion of the leg, but also on the divided tendon, which being more projecting and therefore more exposed, has its two ends pressed down and separated: 2dly, in some cases, it does not maintain the extension of the foot with sufficient certainty: 3dly, it does not prevent displacement in a lateral direction. 28. To the second class belong, 1st, the celebrated slipper of Petit, substituted by that author for his first bandage; this machine was composed of a slipper fixed to the foot, of a knee-piece[37] secured on the lower part of the thigh, and of a strap running from the one and fastened to the other, to extend at pleasure the foot on the leg, and to flex the leg on the thigh: 2dly, the bandage of Duchanoy, made in imitation of the preceding apparatus, and consisting of a simple sock surmounted by a roller, which running along the back part of the leg, was fastened to another roller applied round the lower part of the thigh. Besides the general objection of not at all fulfilling the third indication (16), these processes are liable also to the following ones; 1st, they fatigue the toes by the constant pressure of the slipper and the sock, as Monro experienced in his own person, to such an extent that he was unable to support their use; 2dly, the slipper is quite too complicated, and is therefore seldom at hand when wanted. The apparatus of Duchanoy, does not possess sufficient solidity and steadiness. [37] (_Genouilliere._) I believe this was a piece of apparatus made of leather, somewhat similar to the top of a boot, and secured on the limb just above the knee. TRANS. 29. In the third class are included, 1st, the first machine of Monro, formed of a slipper similar to that of Petit, surmounted by a strap of leather, which was to be fastened by a buckle to a kind of guetre or spatterdash, fixed on the upper part of the leg; 2dly, the second apparatus of the same author, subject, like the other, to several inconveniences; 3dly, the simple apparatus of Schneider, who rested satisfied with maintaining the extension of the foot, by a splint placed anteriorly. Besides various other objections to them, these are all chargeable, alike, with the radical fault, of not fulfilling the second and third indications (16).