34. The patient being placed in a standing position, or, if his case render that impracticable, on a seat without a back, an assistant elevates the arm of the affected side, and supports it at nearly a right angle with the body (Fig. 2), while the surgeon places under the arm-pit the head of the bolster, which descends along the side of the thorax, and which another assistant, situated at the patient’s sound side, holds by the two upper corners. 35. The surgeon now takes one of the first rollers, applies the end of it on the middle of the bolster, fixes it there by two circular turns round the body, and passes a turn obliquely (a a) along the fore part of the thorax, ascending to the sound shoulder: the roller then descends behind, passes under the arm, and returning in front of the thorax, makes a circular turn and a half, horizontally. Having reached the hind part of the thorax, it reascends obliquely by the cast (b), as it had done before, and passes over, before, and under, the sound shoulder; having thus crossed the turn (a a), the roller again passes across the hind part of the thorax, and finishes by circular turns, which completely cover the bolster. A pin is now to be fixed in the place of crossing of the roller on the sound shoulder, to prevent the turn (a) from slipping downward. The application of this first roller is intended for no other purpose, than firmly to fix the bolster which is held up by the two oblique turns before and behind, and secured against the body, by the subsequent circular turns. 36. The bolster being fixed, the surgeon applying one hand to its external surface, pushes it upwards, and, with the other, taking hold of the elbow, after having half-bent the fore arm, lowers the arm, till it is laid along the bolster. He then presses its lower extremity forcibly against the side of the thorax, pushing it upwards at the same time, and directing its upper extremity a little backwards. The application of the bandage constitutes a part of the process of reduction. The humerus, now converted into a lever of the first kind, is drawn at its upper end from the shoulder, in proportion as its lower end, is approximated to the thorax. The scapulary fragment being drawn along with it, and directed at the same time upward and backward, comes into contact with the sternal fragment, and in an instant the deformity of the part disappears. 37. The arm being thus situated, is given in charge to an assistant, who retains it in the same position in which he received it from the surgeon, by pressing on it with one hand, and with the other supporting the fore arm half bent, and placed horizontally across the breast.