6. As the whole apparatus in this case consists in a passive resistance to the active powers employed in producing a displacement, it follows from what has been said (4), that the bandage intended to prevent this displacement, and by that means to guard against the accidents specified above (5), ought, either effectually to bring back to its natural situation, the condyle which is drawn forward, or pull in this last direction (that is, forward) the body of the bone which is still retained in its usual position, in order that it may thus be brought into contact with the condyle. The first of these measures is impracticable, in consequence of the situation of the condyles, which are too deeply enveloped by the surrounding parts, and offer a hold too small to be acted on. The second, therefore, remains to be adopted, and is the more easily executed, in as much as the angle of the jaw, from its projecting and being but slightly covered by the integuments, may without difficulty be directed from behind forward by a proper force. 7. The fingers of the surgeon temporarily supply this force, at the time of reduction; but it is necessary that it should be permanently kept up by means of the apparatus. This end is attained, in the following manner: Place behind the angle of the jaw, which must be first pushed forward, thick compresses, to fill up the hollow under the ear, and form an eminence higher than the surface of the surrounding parts; pass over these compresses, in an oblique manner, the bandage commonly used in lateral fractures of the bone, the application of which must in this case commence on the sound side. These compresses, being more projecting than the surrounding surface, will necessarily sustain a greater pressure, because the compression made by a bandage is in proportion to the projection of the part on which it is applied. Hence, being firmly supported, they will retain the body of the bone in a line with the displaced condyle (4). 8. In addition to this mode of applying the bandage, it is necessary that the fractured bone should be kept in a state of perfect rest. The internal pterygoid and masseter muscles, tending by their contractile efforts to draw the angle of the jaw backwards, sometimes overcome the resistance of the apparatus, and, by producing a second displacement, give rise to the accidents formerly mentioned (5).